Download Most susTAInable building and project in latvia 2013

2013
Catalog
of applications for the contest
«Most susTAInable building and project in Latvia 2013»
Co n t e s t o r g a n i z ato r s :
professional field editions Latvijas Būvniecība and Latvijas Architektūra
and Latvian sustainable building council
www.latvijasbuvnieciba.lv • www.ibp.lv
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The World Green Building Week in year 2013 was marked around the world from 16th of
September till 20th of September, paying attention to sustainable, health and environmentally
friendly design and construction. During the time of the global event in September 19th of
2013 in Riga the results of the competition «Most sustainable building and project 2013», which
was held for the first time in Latvia, were announced.
The competition is being planned in long-term to organized on yearly basis in order to identify
realized sustainable building projects and ideas, paying attention to locally accessible resources in
creation of sustainable buildings, spark the interest of future professionals in the development of
sustainable urban environment and construction, share the information, experience, knowledge
and ideas on sustainable urban environment and construction development and requirements,
spreading the local experience between the members of World Green Building Council, as well as
to enhance the export capacity of architects, engineers and builders.
The entries were evaluated in three nominations- «Most sustainable building 2013», «Most
sustainable project 2013» and «Most sustainable student idea 2013» by 9 criteria: choice of
location and positioning, energy efficiency, efficient use of water resources, building materials,
waste reduction during construction process and operation, transport and mobility, the quality
of inner environment, social and economic benefits, innovative solutions. The competition «Most
sustainable building and project 2013» was announced in February of 2013, organizers- Latvian
Sustainable Building Council (LIBP) and professional issues- «Latvijas Architektūra» («Latvian
Architecture») and «Latvijas Būvniecība» («Construction in Latvia»). The application deadline was
20th June of 2013 and a total of 29 applications were received from recognized architects and
developers as well as from students. Five entries in nomination «Most sustainable building in
Latvia 2013», five entries in nomination «Most sustainable project in Latvia 2013» and four entries
in nomination «Most sustainable student idea in Latvia 2013» were advanced to second round.
Most sustainable building,
project and student idea
in Latvia in 2013
Jury: LIBP managing director Zane Sauka, publicist and editor in chief of the issue «Latvijas Būvniecība»
Agrita Lūse and editor in chief of the issue «Latvijas Architektūra» Jānis Lejnieks, architects Uldis Balodis
and Raimonds Saulītis, master of engineering Ērika Lešinska and doctor of engineering Jānis Kļaviņš,
World Green Building Council expert David Clark. Regulations – www.ibp.lv.
First place in nomination «Most sustainable building 2013» was awarded to office building
«Upmalas Biroji» (developer/customer – «Bauplan Nord», project authors – Michael Schlesinger; «Treimanis un
sabiedrotie», «Constructus») – as a project that stands out with room functionality and high level of physical
and social comfort. The second place was awarded to Ventspils Creative Centre (project authors – architect
office «Virtu», Anda Kursiša, Iveta Cibule, Baiba Ērenpreisa, Renāte Bāliņa, Gita Baumane) as a project with
vastly considered social function. The third place was awarded to project «Residential house FUTURIS» (project
authors – bureau «ARHIS»).
First place in nomination «Most sustainable project 2013» was awarded to family house
project «Vecmājas» (author – architect office «Krauklis Grende»), second place was received by low energy
consumption building with marketing function in industrial park of Riga (project autor- architect Roberts
Riekstiņš), third place was awarded to five family house building complext in Ventspils which has also received
«Passivhaus Institut» certificate. Project authors – architect office «Arhitektūras birojs FORMA» and «Krists
Karklins Design».
In nomination «Most sustainable student idea 2013» two places were awarded refraining from
awarding the third place. The first place was received by yard cleaning project developed by architecture
students, which has been realized for few years already around Latvia. The conclusion of the jury: «The project
is a significant example to social services and politicians of a solution for environment culture development
and real citizen integration». The second place was awarded to – Riga Building College (RBC) architecture
student proposal for the great hall solutionof Tukuma district Slampes municipality Zemgales highscool .
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Ag r i ta Lū s e ,
editor in chief of the issue
«Latvijas Būvniecība»
(«Construction in Latvia»):
Jānis Lejnieks,
editor in chief of the issue
«Latvijas Architektūra»
(«Latvian Architecture»):
«Applications of high quality
objects, buildings and projects
were entered in the competition
providing a strong competition to
all participants. Many of the objects
are also valuable as examples of
practical sustainable building
design and realization. As one
of such I would like to mention
office building «Alojas Biznesa
centrs», although the opinion of
jury`s majority didn`t nominate it
amongst award winners, this office
building is sustainable building
pioneer in Latvia, verifying that in
several years of operation..»
The «Vitruvian Triad» still determines
the fundamental virtues of architecture.
It refers to utilitas, the purpose or
function of a structure; firmitas, the
structural integrity, strength of a
structure and its comprising materials,
as well as maintenance; and venustas,
the aesthetic qualities of the structure.
Contemporary «Triad» of Sustainability
is based on three dimensions and
requires the reconciliation of national
economy, environment protection
and social equity demands. Novelty is
Ethical consumerism. Every assessment
is the good way for sustainable
solutions in future.
Organizers
Zane Sauka,
managing director of Latvian
Sustainable Building Council:
«A sustainable building does not neccessarily need to be
technologically overcomplicated. Sustainable location, planning of
the building to ensure correct use of daylight combined with regular,
smart maintanance make a large step into the right direction. What
matters is the absolute – not relative – use of resources. In other
words, the question is not, what’s the consumption per square
metre, but rather – how many square metres does the building
have and what is it’s total consumption. Architects, engineers and
building constructors in Latvia have enough knowledge and skills
to build good, sustainable buildings. We have such buildings in
Latvia already. In order for every building to follow this standard,
more and more ambitious clients and best practice is needed.
There is not, and cannot be, one and the only «sustainable building
recepe» – sustainability is made up of details. As a country, Latvia
has large potential to compete successfully in European sustainable
building market. For this to happen, we need to take more pride,
respect and care of our country and the resources it has.»
Pat r o n s o f t h e c o m p e t i t i o n
World Green Building Council , WGBC, www.worldgbc.org,
and Ministry of Culutre of the Republic of Latvia www.km.gov.lv/en
Issue «Latvijas Būvniecība», editor in chief Agrita Lūse, +371 28373794,
[email protected], www.latvijasbuvnieciba.lv, www.lilita.lv,
facebook.com/LatvijasBuvnieciba
Issue «Latvijas Architektūra», editor in chief Jānis Lejnieks, +371 29213398,
[email protected], www.lilita.lv
The professional issues dedicated to architecture, construction and design
«Latvijas Architektūra» and «Latvijas Būvniecība» form an alliance, creating
a wholesome and independent informative platform for highlights of the
relevant fields. Both magazines are issued six time a year, providing the
readers with a publication of high-quality content and illustrations. Range of
topics – object reviews, architecture projects, concept of sustainability,good
practice examples of construction and interior design. The alliance has
agreed on information exchange with important NGOs – Latvian Association
of Architects, Latvian Sustainable Building Council, Lavian Association of
Builders, Latvian union of Designers,and architecture platform www.a4d.lv.
Supporters of the creation of the catalogue
State Culture Capital Foundation, www.kkf.lv
Supporters of the contest
Managing director of Latvian Sustainable Building Council Zane Sauka,
+371 29194600, [email protected].
The goal of the Latvian Sustainable Building Council is to promote and
further the development of sustainable building in Latvia. Significant
role in the achievement of the goal is information and education. With
this competition we look to identify and promote sustainable buildings,
projects as well as creative and sustainable ideas in our country. In
collaboration with World Green Building Council the information about the
competition will be accessible to all WGBC members from more than 90
countries in five continents.
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No m i n a t i o n | Most sustainable building in Latvia 2013
Office building
«Aloja business centre»
(«Alojas biznesa centrs»)
Public office building,
«Nordea» bank headquarters,
Valdemāra street 62, Riga.
Authors – architects Visvaldis
Sarma and Inga Zūdiņa,
«SARMA&NORDE Arhitekti».
Builder – «LNK Industries».
Customer – «LNK Properties».
Fulfilling class A office
quality requirements in
«Nordea» bank building there
are unique technological
solutions that render the
building environmentally
friendly as well as energysaving object.
New building. Number
of floors – seven above
the ground and three
underground. Total area of
the building – 16 000 m2,
area of floors above ground–
11 000 m², underground
parking space (170) – 5000 m².
Number of building users –
350. Put into operation in May,
2009.
Visual material:
Foto:
«Sarma&Norde»
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Location. The building is located in the protection zone of the Riga
historical centre, setting is determined by the character of contiguous
streets- K. Valdemara street with the status of city street and the
silent Alojas street. The closing back walls of the building are made
fireproof thus allowing for continued construction of buildings
along the perimeter of the respective block of K. Valdemara street.
Retreating from the red line, on the side of Alojas street there has
been created a public open space near the main entrance of the
building, in courtyard- secluded recreation zone for bank employees
from which it is possible to access the cafe.
The construction. The construction has been developed to
minimize the amount of CO2 emissions during the construction
process and operation. Innovative security solutions have been
applied in the construction of the underground parking space 8.5
m below groundwater level, with limited construction area in a
dense building area. The floor depth and column distance has been
well considered in order to efficiently use the space and daylight.
Utility networks as well as microclimate maintaining equipment are
installed underneath the raised floor, thus allowing for the possibility
to change the shape of the room without huge expenses. Each facade
has been glazed with different parameters, adjusting them to the
climate influence depending on compass and the noise level of the
outside environment. All factors regarding the accessibility of the
environment have been observed. External blinds have been set up.
Building materials and equipment. Sustainable locally produced
building elements and equipment have been used, reducing the
pollution caused by transportation: cement, concrete, crushed stone
chips, reinforced steel elements, glass partitions, facade systems, large
scale artificial stone facade decoration panels, stairs, and innovative
design furniture. Carpet tiles have been supplied from a sustainable
product manufacturer. Many of the materials used can be recycled.
Waste reduction during construction process has been contributed
to by using prefabricated, industrially produced construction
elements and systems which allowed to save manpower expenses and
energy.
Microclimate. Ventilation system prepares the air separately for
34 user zones according to need. In conference centre CO2 levels are
being determined and the necessary amount of fresh air is supplied.
A special air moisturizing system is being used in order to provide a
favourable microclimate through vent lines.
Energy from renewable sources: the heat produced from the
operation of the building is being used repeatedly as an energy
source. In underground parking lot positive temperature is provided
by heat of the ground and the air processed in ventilation systems.
Operation. Building`s BMS system performs monitoring, measures
consumption and regulates the operation of ventilation, heating,
cooling, lighting and other systems. Decentralized engineering
systems allow to maintain the necessary indoor climate individually
in each room, adjusting their operation according to the factors of
internal and external environment- sun, rain, snow, temperature,
wind. Repeated use of produced hot air and water is ensured. In order
to ensure economy of water resources there are low consumption
water mixers used in WC zones, WC bowls are equipped with
dual control flush tank mechanisms – economy is ensured by air
aerator, which reduces the amount of water flowing through three
times (around 6l/min) without reducing intensity of the flow. In
year 2012 the building consumed 400 m3 of water per month.
Maintenance is organized according to ECO OFFICE principles,
involving the employees in waste sorting. Recycled paper is used in
the daily work of the office. Resources are saved by the use of highquality communication technologies. Conferences with international
clients and partners are held online. There is a corporate bicycle
available for use when visiting clients.
Location.
Section of the building.
Facade.
Floor plan.
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No m i n a t i o n | Most sustainable building in Latvia 2013
Office building
«Upmalas offices»
(«Upmalas biroji»)
Public office building
«Upmalas offices» («Upmalas
biroji»), Mūkusalas street
101, LV – 1004. Project
authors – architects Michael
Schlesinger, Edgars Treimanis,
«Treimanis & co» («Treimanis
un sabiedrotie»), engineers
consultants – «Bauplan Nord»,
«Constructus».
Important are the
socioeconomic benefits of the
building: a kindergarten has
been established, that is being
used by the office employees
and locals, there is a public
cafe in the building, access to
Wi-Fi, therefore the building
is a great place for business
meetings, also there is a partly
subsidized system of meal
vouchers for employees. Yoga
classes are offered in the
mornings, there is a postal
service center in the building.
New building. Total and
heated area– 15 568,2 m2 .
Number of building users – on
average 350 people. Put into
operation– 31st of October,
2008.
Visual material:
«Bauplan
Nord»
Foto:
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Location. The location has been chosen regarding the perspective
development plan of Riga. The site has been improved, terrain
leveling has been done, a public children`s playground has been set
up, a pedestrian track to public transport stop has been cleaned. The
orientation of the building has been planned as to bring maximal
amount of daylight in the rooms. The office building is easily
accessible from motorways without getting into traffic jams as well as
with public transport. .
Construction. Foundations – sheet wall piling, reinforced concrete.
Ventilated facade system: curtain facade slab on metal carcass,
ventilation gap, rock wool 150 mm, monolite reinforced concrete wall
250 or 300 mm. Plastered facade system: mineral plaster on fiberglass
reinforcement mesh, rock wool 200 mm, reinforced concrete wall
250 mm, interior finish. Inverted roof technology has been applied:
reinforced concrete slab covered with hot rubber bitumen, above
that- heat insulation, geo glass and white pebble, that prevent the roof
from heating up. Raised floor has been installed indoors allowing
for a free alteration of the floor plan. Windows are equipped with
automated external blinds, retaining approx. 45% of heat.
Construction materials. Soil from the construction pit was
used in the preparation of foundations. Locally produced materials:
concrete, finish materials and plasterboard, other materials: steel,
aluminum, granite, casting iron and copper pipes.
Waste reduction during construction process and
operation. Waste during construction process consisted mainly
of packaging that was being sorted and given away for utilization. A
philosophy of using recyclable materials- metal, aluminum parapets
for external window sills and window and external door profiles, for
internal door- steel frames, granite internal window sills, casting iron
soil stacks and water pipes, copper cooling network and heat pipes.
Microclimate. Air circulation of two kinds- mechanical ventilation
and opening windows. Five ventilation devices equipped with two
heat exchangers (heating and cooling) and rotor type recuperation.
In the ceiling there are local heating/cooling devices with the option
to set the temperature individually. Night cooling during summer.
Opening windows ensure additional air flow and allow for the
saving of energy resources in between heating and cooling seasons.
Air circulation corresponds to the number of employees, providing
30–45 m3/h of fresh air per person.
The average yearly energy consumption is 109,59 kWh/m2
(electricity-54,82 kWh/m2; heating- 54,77 kWh/m2), consumption is
being reduced every year. Heating system is automated. Electricity
consumption for cooling devices is 76 406,5 kWh/per year, heating–
9226,0, outdoor lighting– 20 821,5, lighting for publicly shared
rooms-– 44 877,5, underground parking lot lighting – 19 185,0 kWh/
per year. Sanitary units are equipped with 5L–8L electric boilers,
dosing the amount of water to be heated. Lighting system in the
shared rooms has been equipped with motion sensors, energyefficient LED bulbs have been used.
Operation. BMS system has been installed, maintenance for
which is performed by trained personnel, in order to track water
consumption, heating and cooling. After in depth analysis of the
collected data the consumption is optimized. In the tenant rooms
there are sub-meters of electricity, water, heating and cooling,
allowing for each to control the consumption. The heating of
ramp is done by an economic management system that analyzes
the meteorological data. Water use- economic flushing mode WC
equipment, ionized water is used for window washing, parking lot
washing is done by water saving equipment. Water consumption
is 248 m3/per month. Waste such as domestic waste, polyethylene,
metal packaging, office paper, colored and colorless glass, PET
and cardboard is being sorted. A video camera is installed by the
garbage disposal containers. Fees apply for the parking of private
transportation thus encouraging the use of public transport. Tenants
organize exercise breaks on the grass lawn.
Section of the building.
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No m i n a t i o n | Most sustainable building in Latvia 2013
Apartment
building FUTURIS
Apartment building,
Antonijas street 16A,
Riga. Authors –architects
A. Kronbergs, J. Biķis,
I. Kalvelis, architect technician
K. Šults, design office ARHIS.
Constructors – V. Celmiņš,
A. Samarins, S. Haidersbach,
engineers – T. Papinigis,
S. Tilingaite, P. Hansson,
A. Šišovs, V. Kalmikovs,
A. Mihailovs, O. Ulmanis.
Builder – «Āboltiņa
būvuzņēmums AG» (from
2010), «PBLC» (2008–2010).
Customer – «Larix Property».
With the modern energy
efficient seven-storey
residential building FUTURIS
the renovation phase of the
Art Noveau block of Dzirnavu,
Antonijas and Zaļā streets has
been completed.
New building. Total area –
7318,3 m2, heated area –
6102,9 m2. Number of floors –
seven above ground, two
underground parking lots.
Number of apartments – 60.
Number of users – around
135 people. Put into operation
on May 30th of 2012.
Visual material:
«Larix
Foto: Property»
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Location. The building had to be incorporated in between rather
tight set of existing buildings, however from restrictions arising from
such situation it has been possible to create a desirable effect, creating
a narrow facade on Antonijas street and hiding a broad facade with
the building`s entrance in the yard.
Construction. The building is based on reinforced concrete piles
driven 30m deep into the ground, its outline is a broken line, erecting
the facades of the building in different levels and thus providing the
maximum amount of daylight in apartments from morning till dawn.
The first floor apartments have access to small green area, the middle
floor apartments- to balconies and the upper floor apartments- to
spacious roof terraces. The balconies are attached to the wall with
mounts that prevent the formation of thermal bridges. The building is
equipped with energy-efficient elevators.
Building materials. For structures there has been used clay
concrete blocks and reinforced concrete. Preference has been given
to construction materials produced in Latvia, reducing the delivering
distance and pollution. For insulation there has been used rock wool,
for strengthening- innovative energy efficient dowels, membranes
that protect the insulation from humidity. When choosing the colour
hue of the building attention has been paid to the solar reflectance
index, in order to reduce the heating up of the facade. Roof is covered
with galvanized tinplate. Windows have been manufactured from
timber profiles in which there are grids for the supply of fresh air,
they have triple glazing and between glass panes there are energyefficient glass plane separators. There are windows built in the warm
part of the roof; control of external blinds is provided by solar panels.
Water supply channels have been made of stainless steel pipes.
Microclimate. The ventilation valves installed in window frames
ensure an optimal amount of fresh air in the rooms. Powered
ventilators are installed in apartment bathrooms, ventilation hoods
in kitchens, soundproof mineral wool has been installed in between
walls, which also ensures optimal microclimate in the rooms.
Building`s energy efficiency status in heating season of 2012./2013. –
55,52 kWh/m2. The energy consumption for heating– 42,58 kWh/
m2, for hot water – 12,93 kWh/m2. Centralized heat supply has been
adapted to the outdoor temperature fluctuations, there are individual
thermostats and heat consumption meters. Each heating element is
connected directly to the collector.
Operation. Sanitary facilities with thermostats and efficient water
economy modes are installed, remote tracking of individual water
consumption figures. The average water consumption rate per year –
230 m3/h. Waste is being sorted – glass and paper.
Section of layers.
First floor plan.
Technical drawing of the roof.
Technical drawing of
balcony and window.
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No m i n a t i o n | Most sustainable building in Latvia 2013
National Art Museum
of Latvia «Riga Bourse»
Public building, Doma
square 6, Riga. Author of the
reconstruction and restoration
project – architect Liesma
Markova, «Arhitektoniskās
izpētes grupa». Builder
– «Pilnsabiedrība
RBSSKALS&RBSSKALS
Būvvadība». Customer –
«Valsts Nekustamie īpašumi»
(State Real Estate)
The building houses the
National Art Museum of
Latvia «Riga Bourse», and it
is architectural monument
of national significance. The
building was built during
years of 1852.–1855., architect
Haralds Juliuss Bose. After
reconstruction and restoration
the building perfectly
combines multiple functionsthe function of museum and
publicly accessible object. For
the first time in the history
of the building it is possible
to look into previously
closed halls with historical
interior. Travelling collections
contribute to educating the
public, a quality environment
for kids has been created
with suitable activities and
content. There is also a
place for discussions, book
release parties etc., which
can be viewed as significant
sustainability aspects for
social integration.
Reconstruction and
restoration. Overall heated
area– 5404,2 m². Number of
floors – 6. Number of users–
50 employees, more than
147 000 visitors per year. Put
into operation on August 2nd
of 2011.
Photo: «RBSSKALS»,
Technical drawings:
«Arhitektoniskās
Foto:
Izpētes Grupa»
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History. The building is located in the historical center of Riga,
the UNESCO protection zone, in Doma square, for a long time
it operated as Riga bourse and corresponding to its functional
significance was closed to visitors. After the Second World War
the building became propaganda house of scientific equipment,
cinematic lecture hall and library, the building was operated but not
renovated, only small changes in the layout were made. After the fire
during the renovation of 1976–1979, in year 1980 new renovation
plan was designed, the realization of which was put to halt. The
renovation of the building was restarted in year 2007.
Construction and layout. The building has six floors and the
courtyard has been transformed into atrium and partly covered with
glass roof at the height of the building, which can be regarded as
innovation, adjusting the building to the needs of the museum yet not
interfering with the inner structure of the building. This is one of the
few buildings in the Riga historical center where after reconstruction
the regard to the principles of the accessibility to environment has
been shown, making the building family and people with functional
impairment friendly. There has been installed a spacious glazed
elevator, ramps, the WC zone next to the cloakroom has a changing
table for babies, on the fourth floor of the exhibition there is a
recreation zone with a beautiful view on the city. In the basement of
the building there is a large cloakroom in which it is also possible to
use lockers for storing personal belongings.
Building materials and waste reducing during
construction process. Any existing material has been used either
in its original place or transferred to another part of the building,
ensuring ultimate preserving of the building`s content. The 150 year
old wooden beams from the dismantled roof construction have been
adjusted to floor covering, the old copper roof covering has been
used for indoor decoration, the restored old concrete steps make up
the beginning section of the new stairs etc. The choice of any new
material was determined by historical context and practical necessity.
Oak has been chosen for floor as the most durable material, dolomite
and granite floors in the exhibition hall and lobby correspond to
the room occupancy etc. There have been some departures from
the historical context realized in the project, however they have
been based on the principle of the building`s sustainability in its
operation.
During the construction process the sorting of construction waste
was carried out – metal, wood, paper etc., that ensured a successful
utilization.
Heat consumption per year – specific heat consumption is
130 kWh/m², from that- 3 kWh/m² for preparation of hot water.
Significant part of the heat consumption is made by the citie`s
public space- atrium. Electricity consumption in year 2012 was
938 590 kWh, including lighting and facilities- 833 291 kWh, and
air preparation systems 105 300 kWh. Electricity consumption is
associated with the regular filming in the building and the provision
of the necessary powerful equipment`s operation.
Microclimate. Engineering systems with automatic operational
control have been installed that provide microclimate appropriate
to the standards of the museum. Ventilation systems are equipped
with heat and humidity recovery heat exchangers. Central cooling
facilities operate in three modes: in spring and autumn- with outside
air (costless natural resource); in summer with environmentally
friendly adiabatic cooling; during summer in especially hot
weather- with controllable multistage compression refrigeration unit.
Circulation pumps are equipped with frequency converters to adapt
the cooling output to the changing consumption and save electricity.
Cooling system has been made based on the location being UNESCO
protection zone, it is integrated in the construction, air supply
inlets are covered with decorative metal lattice. In exhibition halls a
constant temperature of +20–21 °C and relative humidity of 30-55%
is maintained, air inlet filters are regularly changed.
Operation. BMS is installed in the building, which ensures the
metering and control of energy consumption, the optimization of
system operation as well as provides information on necessary system
maintenance. The average water consumption per month is 174 m³.
The necessary cold water for the operation of cooling systems is
being metered and partly reused in automatically operated mode.
Water supply system`s water is not used for the watering of plants.
During operation waste sorting is not carried out. Bicycle stands are
of importance because during daytime it is difficult to find a parking
spot in the area.
Plans of the building.
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No m i n a t i o n | Most sustainable building in Latvia 2013
Narrow-gauge railway
of Ventspils
The development of the
narrow-gauge railway
exposition, Ventspils museum
and territory of Seaside
Open-air museum, Riņķa
street 2; Vasarnīcu street 47,
58; Aizsaules street 5; Saules
street 130, Ventspils city.
Project authors – architects
Anda Kursiša, Iveta Cibule,
Gita Baumane, Lauris
Kalniņš, Baiba Ērenpreisa,
«Virtu». Constructor «Ostas
celtnieks». Customer –
Ventspils Museum, «Komunālā
pārvlade».
The project expands the
functions of Ventspils Openair Museum, is practical and
accessible to a wide range of
visitors and viewers. Interest
about industrial and building
heritage is inspired in visitors;
while for architecture and
building professionals it
is important to become
familiar with simple and
environmentally friendly
construction techniques that
can last for more than 100
years- wooden buildings,
locomotive of the narrowgauge railway train etc.
New building, reconstruction,
replication. The total area
of the complex groups of
buildings– 551,6 m²: station
building «Kalns» – 110 m²;
staation «Priede» – 7,3 m²;
shelter for coaches and
wagons– 185,6 m²; station
building «Muzejs» – 92 m²;
depot building «Aizputes
depo» – 130 m²; pay office –
6,7 m²; station «Pludmale» –
20 m². Put into operation in
July 2010.
Visual
Foto: material: «Virtu»
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Location. The project is realized in the territory of museums,
including several parts: construction and reconstruction of railway
track sections, construction of a bicycle track, replication of historical
buildings, and improvement of the territory. The relief and trees of
the territory were preserved to the highest possible extent. Bicycle
track allows to view the narrow gauge railway in an environmentally
friendly way. In accordance with traditional practices a natural
rainwater runoff has been made for the whole territory due to slopes.
Construction. Narrow-gauge railway depot, station «Muzejs»,
pay office building, shelter for coaches and wagons, coal loading site,
stops and destination station building fulfil the practical function
of serving the visitors and are also the exhibits of the museum of
once functional narrow-gauge railway. Buildings: museum station
building- a replication of the lost Mazirbes station, designed after
photographs and on-site inspection of similar buildings (a standard
project of the German army); Aizputes depot building replication –
designed after photographs, inspection of similar buildings in
Germany and from photo materials, shelter building – designed after
analogous one in Germany; pay office building and station building
designed after photographs and sketches from the Soviet period.
Destination station building is a replica of Pļavas station building,
which is close to ceasing to exist. Depot building is made in timber
carcass construction, wall fill- bricks; «Muzejs» and destination
station building– timber carcass construction with mineral wool
insulation, timber cladding on the facade and timber wall and ceiling
cladding indoors. Wooden chips are used for the roofing of station
buildings, wooden channels are installed for draining the rainwater
filled with tin sheets to last longer. Other buildings, facilities ad
elements too have been made as simple wooden constructions.
The buildings have been constructed maximally using traditional
building techniques. If those were lost, solutions for rational and
ecological connecting of parts were searched for. For buildings a
natural rainwater drainage system has been created, moving the water
through metal channels into buried tanks with breakstone that drains
the water into the ground.
Construction materials. Mostly local building materials have
been used, construction elements manufactured in local workshops,
for walls of one building there were used bricks from a demolished
building. Constructors were not allowed to deviate from the
historical craft, a strict task was given with an entry in all pages of the
project: «All work is to be done in traditional carpentry technique,
any display of modern materials in visible junctions of facade and
interior is unacceptable.» Authors explained in a simple language: «It
is forbidden to bring materials from a store.» Timber facades were
tinted with a simple ecological material– top soil tinted water. Boards
acquired a grey tone and are no more indecently new. Windows,
doors are painted with linseed oil paint, wooden elements indoorswith flour paint, windows have tow sealing.
Waste reduction during construction process. Before
construction the old shelter was demolished, partly the railway track
too. Materials were sorted and utilized, causing a minimal harm to
the environment.
Operation. Seasonal use from 01.05. till 31.10. and during
celebration. During winter season the buildings are maintained
and guarded, providing necessary amount of heat to ensure the
durability of the buildings and exhibition. Electricity consumption:
Kalna station – on average 75 kW per month, 11 700 kW per year.
Museum buildings: depot, station – on average 3750 kW per month,
45 000 kW per year. Heat: renewable energy sources for heating
of the depot building– 100% (firewood heating), «Muzejs» and
destination station building – 80% firewood heating, additional
heating with electric heaters. Water consumption: destination
station – on average 2 m3 per month; museum buildings (depot,
station) – on average 30 m3 per month, because the steam locomotive
is being filled.
Section of the «Aizputes depo».
Section of the «Kalna stacija».
Section of the museum station building.
14
No m i n a t i o n | Most sustainable building in Latvia 2013
Ventspils Creative House
(«Ventspils Jaunrades nams»)
Public building – educational
institution, Maiznieku street
11, Ventspils, Latvia. Project
authors – architects Anda
Kursiša, Iveta Cibule, Gita
Baumane, Baiba Ērenpreisa,
Renāte Bāliņa, «Virtu».
Contractor – «Pilsbūve».
Lime plaster for the facade–
Māris Līdaka, restoration
of hall interior painting
– Baiba Pilsuma. Customer –
«Ventspils Izglītības pārvalde»,
«Komunālā pārvalde».
The building complex consists
of a renovated historical
volume and new building,
significantly improving the
overall appearance of the
block and the visual identity
of the neighborhood. The
social function is the most
important, offering creativevisual and performing arts,
music-, as well as educational
classes for pupils and
students throughout the
week from 7 a.m. till 11 p.m.
Better communication of
employees has been resolved.
During the planning stage
employees were surveyed
and the optimal solutions
for groups of rooms were
agreed on, which was a
basis for the employee
integration and openness,
switching from cabinet
system to open office room.
The successful realization of
indoor environment factors
has allowed for unplanned
expansion of the building
functions- it can now be used
for representation, seminars
and other public events.
Reconstruction and new
construction. The overall
area of both buildings–
3168,2 m², heated area –
2613,1 m². Number of users:
69 employees, 1761 pupils
and 2500 visitors of
planetarium and observatory
per month. Put into operation
in August of 2010.
Foto: material: «Virtu»
Visual
15
Location. Creative House is located in a building with a remarkable
history – the former Latvian Community House of Ventspils, next to
it a new construction has been built. The yard has been landscaped to
be used for classes, preserving the trees and planting new greenery.
Fences and walls as well as other constructions of neighboring land
properties have been cleared up. During the project pavements have
been repaired, ramps constructed. A learning area has been set up for
children to learn the safety basics.
Construction. The distribution of functions between the renovated
and new construction were done by the following principle- to
interfere as little as possible in the structure of the existing building,
planning to allocate performing arts and music club there for it is
easier to adjust the rooms to meet the needs of those activities: less
walls have to be destroyed- less debris; layout corresponding to
existing walls. In the new building technologies club is planned with
special equipment. Renovation work in the historical building to
increase the energy-efficiency: the construction of new floor with
heat-insulation layer on the ground floor, insulation of the yard
and end facades with 100mm heat-insulation, the north exterior
wall insulation from inside with fibrolite-foam polystyrene sheets,
installation of new wooden windows on the yard-facing facade with
Uavg.<1,6 W/ m2K, insulation of the attic and roof with 200mm thick
mineral wool slabs, replacement and sealing of window glazing for
historical wooden windows, construction of new heating system,
ensuring that the building is hermetic, installing blinds on the
windows of Southern facade protecting the rooms from overheating.
Walls of the new building have been constructed from ceramic
blocks, external walls have been insulated with polystyrene heatinsulation, window and door Uavg.<1,6 W/m2K; roof heat-insulation250 mm thick. Taking into account the function, attention was paid
to acoustic comfort, acoustics specialist was consulted.
Construction materials. All the valuable building components
and structures from the construction under renovation were stored,
inventoried and re-used. Maximum use of materials produced in
Latvia– ceramic blocks, cobblestone, heat insulation and acoustic
finishing panels, tiles, which have been made according to historical
models, wooden doors, finishing panels, parquet, and lime plaster.
Many building elements had been produced in local workshops.
Waste reduction during construction process.
Dismantled materials- door leaf unfit for continued use, wall panels
etc.- were used during construction, for example for protecting the
trees, employee pathways in the yard and for temporary entrances in
the building.
Microclimate. Both buildings have many rooms with different
temperature and air circulation criteria. They are ensured by
air exchange devices and careful regulation of the equipment.
Ventilation system is equipped with recuperation device. Heating
elements are adjustable. Room occupancy causes heat gain from
people, temperature is being controlled to avoid overheating and
unnecessary opening of the windows during winter.
Operation. Main electricity consumers: lighting, ventilation
equipment, technological equipment in the new building – kitchen,
workshops, planetarium, consumption in year 2012 – 47 kWh/
m2. Energy consumption for heating in year 2012 – 83,3 kWh/m²,
for hot water – 14,6 kWh/m2 a year. The energy consumption of
the building is being monitored. Water consumption is reduced by
economic water mixers for sinks and showers and dual flush for WC
equipment. Paper right now is sorted according to possibilities in the
city of Ventspils.
Section of the building.
Territorial planning.
Floor plans.
16
No m i n a t i o n | Most sustainable building in Latvia 2013
The reconstruction of Kuldīga
Town Hall and complex
A public building complex
with governing function,
Baznīcas street 1, Kuldīga,
Latvia. Project authors
architects A.Kursiša,
I.Cibule, B.Ērenpreisa,
«Virtu», landscape architect
E.Neilands. Constructors
«Kurzemes Ligzda»,
«Būvuzņēmums Restaurators».
Kuldīgas region Town Hall was
reconstructed because the
functions of the municipality
needed extension. It is a local
significance culture and art
monument that set strict rules
from state authorities and also
required to show regard to
the respectable old age of the
building.
Reconstruction. The
total area of the complex
building groups – 1496.4 m²:
administrative building «A»
– 1220.4 m2; administrative
building «B» – 186.8 m2;
auxiliary building «C» – 74.2
m2; auxiliary building «D»
– 15.0 m2. Number of users
– 54. Put into operation –
November of 2011.
Foto: material: «Virtu»
Visual
17
Location. The building complex is located in the historical city
centre of Kuldīga, easily accessible by car drivers, pedestrians, public
transportation and bicycles. The initial idea, new building extension in
the yard, was corrected to a more sustainable concept- restore the old
fire station (building «B»), and adjust it for the collocation of offices.
The distribution of building functions was done by the principle:
intrude in the existing building structures as little as possible. The
buildings and nearby territory form a small block, the whole territory
was reconstructed. The previously messy park was redesigned for
public use.
Construction. In the building «A» the attic and roof was insulated
with soft mineral wool slabs, thickness of 200mm; the historical
timber windows were renovated and sealed and the glazing was
replaced; quality plaster and node construction to ensure that the
building is hermetic; recuperation ventilation system was installed;
basement renovation and hydro insulation. In the building «B»: the
stone walls were renovated and insulated with 50-80mm thick pellet
fill in the air gap of the walls and with 100mm thick multilayer fibrolite
from the inside of the rooms; the roof was replaced and insulated with
250mm soft mineral wool slabs; the windows were replaced. In the fire
station building there were created rooms in the roof construction.
Additionally there is provided «second light» in the rooms with glazed
hallway and floor divisions. The auxiliary building, the shed, which
in the case of superficial attitude would be demolished, was carefully
renovated in Kuldīga, its wooden chip roof was renewed; the harmful
asbestos was handed to special disposal site. The building is used for
parking employee cars and lacing the inventory of the territory. The
benches in the park are made from massive timber as an alternative to
expensive historical type benches. The layout of the benches attracts
people of different age and creative use- conversations, observation,
movement.
Construction materials. In the realization of the project all
historical parts were put into inventory and maintained, constructions
were renewed. Windows and doors- restored and new were
manufactured in the local carpentry. Facade finish and indoors:
building «A» – lime plaster and painting; buildings «B» and «D»
– purified and reused bricks from the existing building and from
locally demolished buildings. In public rooms of the building «A» –
plaster on splints. Floors in buildings «A» and «B» are made of locally
manufactured oak planks and shield parquet. Local materials were
used outdoors- mulch- boulder pavement, riven granite, concrete
slabs, grit.
Waste reduction during construction process. Work was
carried out based on the principle- less demolished walls, less debris.
Removed materials- unsuitable door frames, wall panels etc. were used
to enclose trees, for employee pathways and entrances. Bricks from
demolished walls were used in other walls.
Microclimate. In building «A» the forced ventilation and air cooling
is installed on the plinth rooms of the roof floor, in kitchens and WCs;
natural ventilation- on 1. and 2. floor respecting the historical interior.
The building «B»- completely equipped with forced ventilation.
Ventilation system with recuperation.
Operation. Administrative building «A» with the area of 1220.4 m2
heat consumption in year 2012- 109 kWh/ m²,building «B» with the
area of 186.8 m2 – 79 kWh/ m². Comparing with the consumption
in year 2008, the consumption for the building «A» is reduced more
than twice, but for building «B» almost five times. All heating elements
can be regulated. The balance includes internal heat gain from people,
lighting and computers, room temperature is regularly controlled, to
prevent unnecessary opening of windows during winter. Electricity
consumption: in year 2012- 60 kWh/m2 for lighting, office and
kitchen equippment, ventilation and cooling systems. Both buildings
have new water supply systems, plumbing is equipped with economic
water mixers, WC – with two regime flushing system. Wasten sorting
is not performed because it has not been introduced in the city.
18
No m i n a t i o n | Most sustainable building in Latvia 2013
Office building
«Europa business centre»
(«Europa biznesa centrs»)
Office building, Ropažu
street 10, Riga. Project
authors- architects Dalius
Striukas, Simonas Vinciunas,
«Archidata». The building is a
part of the newly developed
block «New Teika» («Jaunā
Teika»). Builder and customer
– «Hanner Real Estate».
New building. Total area of
the building – 34 451,8 m2,
calculated – 19 346,6 m2.
Number of building users–
1000 – 1200. Put into
operation in July of 2009.
Photo: «Hanner
Foto:Estate».
Real
Location. The development project of the block «New Teika» includes 7ha large territory applicable for
multifunctional use. In the territory and the office centre it is possible to park more than 550 cars, there is
a guarded multi-storey parking lot. The building position in the block is designed so that it would be easily
accessible with a personal vehicle and from nearby public transportation stop. The territory of the block is
greened and for pedestrian safety there are installed several speed bumps, the territory is illuminated.
Construction. The building construction is built from 150 mm reinforced concrete with 150 mm hard
mineral wool cladding. For the facade finish there has been used glass, blinds, planes, decorative plaster. The
formation of thermal bridges is prevented. Load bearing external construction is located in the warm zone,
which contributes to improving the microclimate, ensuring that external walls are wind and precipitation
hermetic, gradual drying of external wall constructions, prolongation of the functional lifetime of the
building. The internal constructive solution allows to rebuild the rooms according to individual project.
Microclimate. Room climate control is automatic and in the whole building there is installed centralized
climate control system (BMS), which allows to individually control the microclimate regime in each room.
On each floor there is installed individual air processing units, which cools or heats the air depending on
the outside temperature.. The air processing units are equipped with recuperators. For some air processing
units there is air moisturizing systems installed, that work in automatic mode, maintaining the set relative
air humidity parameters. Cassette type fan-coils allow to divide the rooms in separate zones with different
temperatures.
Energy consumption In year 2012 for heating – 73,65 kWh/m2, cooling – 18,41 kWh/m2, hot water
preparation– 7,94 kWh/m2, lighting – 19,31 kWh/m2, ventilation – 21 kWh/m2. Automatic system
allows to provide heat according to individual requirements and week days as well as it is possible to set
variations depending on hours. It allows to save energy when the rooms are not in use.
The building`s power supply system is partly automatic, light turns on and off automatically when
reaching certain light intensity depending on conditions outside.
Operation. The building`s utilities are maintained by specialist, who on regular basis perform
inspection and maintenance in order to ensure optimal performance, continuity and longevity of all
utilities. The average water consumption per month is 617 m3. Waste sorting– municipal waste, glass,
paper, cardboard and plastic. Safety solution- guards 24h and video surveillance of the territory.
No m i n a t i o n | Most sustainable building in Latvia 2013
19
Apartment building
in Ropažu street
Apartment building, Ropažu
street 12 and Ropažu
street 12k–1, Riga. Project
authors – architects Dalius
Striukas, Simonas Vinciunas,
«Archidata». The building is a
part of the newly developed
block «New Teika» («Jaunā
Teika»). Builder and customer
– «Hanner Real Estate».
New building. The total
building area in Ropažu
street 12 – 13 543 m2. The
total building area in Ropažu
street 12k–1 – 22 926 m2.
Number of building users –
500. Put into operation on 1st
April of 2009.
Photo: «Hanner
Real Estate».
Location. The development project of the block «New Teika» includes 7ha large territory applicable for
multifunctional use. In the territory and the office centre it is possible to park more than 550 cars, there
is a guarded multi-storey parking lot. The building location in the centre of the block and orientation
against South is planned with the intention to protect the building from city noises as well as to ensure a
maximum daylight inlet and isolation. The territory of the block is greened and for pedestrian safety there
are installed several speed bumps, the territory is illuminated.
Construction. The buildings are constructed from 200 mm expanded clay blocks with 150 mm hard
mineral wool cladding. Exterior wall finish is made of decorative plaster or decorative facade planes. For
the majority of apartments there is constructed completely closing balcony glazing which is an additional
barrier, withholding direct wind flow and preventing heat losses. The constructive solution allows to carry
out room reconstruction according to individual requirements without re-planning. The load bearing
walls are around the perimeter of the apartment.
Microclimate. The ventilation system installed in the buildings ensures a constant air circulation in each
apartment. Energy consumption in year 2012 for heating– 74,25 kWh/m2, for hot water preparation–
20,48 kWh/m2, lighting – 5,31 kWh/m2. The automated system allows to provide heat according to
individual requirements and each weekday as well as it is possible to set variations depending on hours.
It allows to save heat, when rooms are not in use. There are thermal heads installed on radiators. The
buildings power supply system is partly automated, lighting in the communal areas turns on or off
automatically depending on necessity.
Operation. The building`s utilities are maintained by specialist, who on regular basis perform
inspection and maintenance in order to ensure optimal performance, continuity and longevity of all
utilities. With individual heat meters the residents can control the amount of consumed heat. When
purchasing the apartment each owner is offered to install a smart house system during the finish work in
the rooms, which would allow to remotely regulate the heating graph. The average water consumption in
the buildings is 768,29 m3 per month, there is water saving plumbing installed. Waste sorting– municipal
waste, glass, paper, cardboard and plastic. Next to mailboxes there are placed Līgatnes Paper Factory`s
wastepaper collection bins, for collecting the unnecessary post and advertising material and handing over
for recycling. Safety solution- guards 24h and video surveillance of the territory.
20
No m i n a t i o n | Most sustainable project in Latvia 2013
Office building
with marketing function
Office building with
marketing function, Dzelzavas
street 120Z, Riga. Author –
architect Roberts Riekstiņš,
SIA «Roberta Riekstiņa birojs».
Building structures – engineer
Sandis Eglītis; heating,
ventilation – engineer
Uldis Jansons. Engineering
solutions – SIA «Balta istaba».
Builder and customer – «Rīgas
Industriālais parks».
The building was designed
according to passive house
standard. The calculated heat
consumption – 15 kWh/m2,
and it is one of the first passive
houses with public functions
in Latvia.
New building. Total area –
1555,9 m2, heated area –
1088 m2, unheated area of
the underground parking lot–
468 m2, taking up the whole
area of the plot. Planned
number of building users – 50.
Technical project approved on
September 6th, 2011. Put into
operation – 2012.
Visual material: «Roberta
Foto:
Riekstiņa birojs»
21
Location. The building has been designed on a land property
on which there was a guard post and transformer, which were
integrated into the project. The surrounding environment is being
improve and greening is done with plants in boxes that don`t
interfere with the dense engineering communications network.
Construction. A compact construction volume has been
made in the shape of equilateral triangle, it`s determined by the
configuration of the land property. Monolith reinforced concrete
column skeleton building with reinforced concrete slabs and
internal stability walls. External walls- self-supporting, industrially
prepared timber panel structures with 400 mm rock wool
insulation. Windows have 46 mm thick triple pane glazing with
U=0,5 W/m2K and multistage aluminium system. The proportion
of publicly shared space is low – 5% of the total area, and it allows
to reduce the energy consumption. Innovation – compact shape
reduces the surface area and heat losses. Glazed parts have been
optimized in the design to balance heat losses and the necessary
amount of daylight, the glazed area on the South side is smaller,
on the North side- larger. Thermal bridges in the base, slab joints
and in cornice assemblies have been averted by a continuous heat
insulation layer.
Construction materials. Strictly high-quality, that ensure low
energy consumption during operation of the building, but at the
same time balance the construction expenses and the potential
energy savings. SPU heat insulation allows to reduce the thickness
of the insulation layer and is especially suitable in cases when roof
is operated.
Waste reduction during construction process was solved by
sending it to be recycled.
Microclimate. The building has been designed to ensure healthy
indoor microclimate, which corresponds to requirements of
modern workplace. Ventilation corresponds to Passive house
standard with recuperation, 90% efficiency and integrated cooling
unit. System has three intensity modes, electricity consumption
doesn`t exceed 0,4 Wh/m2K. Innovation – passive cooling with
ground heath pump, using the ground temperature. Southwest and
southeast facades have external blinds. There is no need to ventilate
the rooms by opening the window, sound insulation is ensured and
the discomfort creating outside noises are inaudible. Air quality
and thermal comfort has been assessed as outstanding.
Heat consumption 15 kWh/m2. Only renewable energy sources
are used for heating and hot water production – geothermal heat
pump, three 120 m deep boreholes, solar collectors on the roof,
that provide up to 45% energy needed for hot water production
or almost 5000 kWh of heat. Lighting: calculated energy
consumption is 1,88 kWh/m2 per year, LED bulbs have been used,
that are regulated automatically depending on the intensity of
external lighting. It is intended to install two wind generators on
the roof of the building.
Operation. Water saving sanitary equipment has been installed. It
is possible to sort paper and plastic waste.
Location.
Section of the facade.
22
No m i n a t i o n | Most sustainable project in Latvia 2013
Passive energy-efficient
residential buildings
Passive energy-efficient
residential development,
consisting of five individual
buildings, Robežu street
192, Ventspils. Authors–
architect Ināra Kārkliņa,
SIA «Arhitektūras birojs
FORMA», architect Krists
Kārkliņš, LLC «Krists
Karklins Design», with
participation of Agnese
Smilškalne, Jānis Zaharāns.
Engineering consultants:
structural engineeringJēkabs Januševskis, heating
solutions– Jānis Matisons,
water supply, sewerage–
Ligita Koroļova, power
supply – Juris Kalniņš. Builder
and customer – «Samrode».
Project has received
«Passivhaus Institut»,
Darmstadt (Germany)
certificate in
2009. Calculations have been
produced utilizing PHPP 2007
program, consultant – office
«ING+ARCH» (Germany).
Energy consumption
is reduced through
implementation of
Passivehaus design principles.
Construction costs of this
energy-efficient building
project are not significantly
greater than those of a
comparable size project
built utilizing traditional
construction technology.
Five new single-family
residences. Total area of
one building– 233 m2,
heated area – 173,3 m2
(determined according to
the methodology of Passive
House Institute in Germany).
Number of floors – 2. Number
of building users – 4–5 people.
Technical project approved
for construction in January of
2010. Construction of project
in multiple phases – 2011
through 2014.
Visual material:
«Arhitektūras birojs FORMA»,
«Krists
Foto: Karklins Design»
Piecu pasīvo ēku kopskats.
23
Position. Five single-family residences have been situated on a building
setback line, with their main entrance and facade located along the
adjacent street. Each residential building is connected to a utility building
and parking area for two cars is provided under the overhang of the roof
at the junction of the two building volumes. Buildings are compact and
oriented towards the cardinal directions of the sky. The utility building is
positioned to the north of the residential house. A row of trees is planted
along the street and on the south side of the residential building volume.
Utilizing surrounding landscape as an active participant in the passive solar
heat gain/cooling processes, the thick foliage of deciduous trees will aid in
shading interior spaces during the hot months of summer, while allowing
to take advantage of passive heating potential from direct sunlight during
the cold part of the year.
Construction. Good thermal insulation; windows with insulation in
the frame construction and triple pane glazing have been used; facade has
been designed according to heating and cooling requirements outlined in
«Passivehaus» design guidelines. During summer, south-facing interior
spaces are protected by the sloping roof overhang and the outwardprojecting balcony on the second floor. The angle of incidence of sun
rays in summer and winter has been taken into account while calculating
the exact distance of projection for both shading elements. The area of
all glazed openings facing E, N and W exposure has been reduced to the
minimum necessary for bringing daylight into rooms. Glass with increased
Solar Hear Gain Coefficient is used, in order to maintain positive heat
gain/heat loss balance on the interior of the building during the cold
months of the year. Shading of some W exposure windows with outside
shutters reduces cooling energy consumption in the summer. Buildings
are supported by double-shell wood frame with low thermal conductivity
coefficient (external walls u=0,087, roof u=0,066, foundation plate u=0,077,
windows u=0,69, outer door u=0,63) and excluding thermal bridges, total
wall thickness with insulation– 50 cm, thickness of the roof construction65cm. There is a minimum of one operable window provided in each room.
Building materials. Locally-sourced, saving cost and energy required for
transportation.
Environmentally friendly materials – wood, eco-wool, thermo wood
(doesn`t change its size and is long-lasting), concrete panels, and metal
panels. PVC window frames with steel reinforcing, thermal modules and
glass can be disassembled and recycled.
Waste reduction during construction process. The main building
material is wood and there is very little to no waste produce in the process
of building construction.
Microclimate. Open, double-height volume of the living space,
connecting the first floor with the second, as well as the open character of
the plan layout contribute to free air circulation in the house. The fireplace
located in the living room also contributes to air circulation in the building.
The project is expected to provide approx. 30 m3/h of fresh air per person.
Mechanical ventilation system has a calculated recuperation efficiency of
86,4%. The construction of building envelope meets Passivehaus standards
and ensures stable microclimatic conditions (protection from overheating
and heat-loss).
Buildings have warm air heating, combining the heat from the heat pump
and solar panels. The total amount of energy necessary for heating and
hot water – 15,4 kWh/m2 per year – can be obtained from renewable
sources only. The heat pump device has been installed in the center of the
house, in order to contribute to balanced heat re-distribution throughout
the building. Air-to-ground heat exchange pipe system (with antibacterial
coating) is being used for heating ventilated air in the winter and for
cooling it in the summer. Lighting– only energy-efficient light fixtures are
used in the project.
Operation. Water consumption per month during one calendar year
Qavg.=0,9 m3/dnn x30 =27 m3. There is a special garbage disposal/collection
container located at the entry gate of the property. The ability of residents to
sort residential waste is provided and encouraged. Geometry of the paved
area of the driveway at the entry gate is designed to provide easy access to
garbage disposal/collection containers by waste collection trucks.
View from Robežu Street.
Location of the building.
Jumta/sienu metāla lokšņu segums
Koka apšuves dēļi
Finishing materials.
Section of the building.
Apdares plāksnes
24
No m i n a t i o n | Most sustainable project in Latvia 2013
Latvian University (LU)
academic centre
of natural sciences
The 1st round construction of
academic complex, education
and science building, Jelgavas
iela 1, Riga, Latvia. Project
authors – project manager
architect V. Polkovņikova,
the head of the architecture
section I. Kuļikovska,
site section developer
I. Stankēviča; architects –
D. Zariņa, M. Plāciņa, architect
assistants – K. Bautra,
R. Liepiņš, «Sestais Stils».
Customer – «Latvijas
Universitāte» (University
of Latvia)
The basic principles of the
concept development are
viewed in the context of LU
development strategy– basing
on the significant features and
advantages of the building
territory. In the complex
development vision there
are balanced environmental
factors, energy-efficiency
aspects, separate buildings
are constructed according
to bioclimatic architecture
guidelines, energy source
consumption optimization
and cooperation between
different interested groups
is intended as the most
relevant means for ensuring
sustainability.
Total building area –
21 046 m2. Planned number of
users – 2000 students. Design
project approved in October
of 2011.
Visual material:
Foto: stils»
«Sestais
25
Location. Till year 2023 in Riga, Torņkalna area, LU plans
to create a modern academic centre with approximately
10 buildings and a total area of 120 000 m2. The building
complex is planned around central square which is open
against South, thus ensuring favourable climate in the
open space. The centre of natural sciences will be the first
building, it is planned to begin the construction in year
2014. The building volume is optimally oriented on the site.
Utilities solutions- parking lots, roads, pedestrian tracks
and a perennial lawn, serving as a natural grassland that`s
mowed once a year, in some places substituting it with
crops and decorative grass collections. The building is easily
accessible by pedestrians, car drivers, bicycle drivers, public
transportation users.
Construction. Bioclimatic architecture principles are
used, the building is designed with the smallest possible
perimeter, and the building is designed in the shape of
irregular rectangle to let in natural daylight. Load bearing
constructions- aluminium facades with energy efficient
glazing. The building`s thermal volume will act as a thermal
barrier, regulating the indoors temperature. Indoors there
will be used acoustic materials and acoustic barriers. Roof
constructions are planned in varying level- green roof
is supplemented by glass covering above atrium and a
greenhouse volume. Above green roof there will be installed
solar collector. The green roof with succulents will ensure
sound insulation, won`t allow the roof to heat up during
summer and to cool down during winter, will purify the air
and produce oxygen, absorb the rainwater, offer ecological
dwelling place for birds and insects.
Building materials. It is planned to use locally
manufactured materials– reinforced concrete for walls
and coverings, concrete exterior wall panels, concrete
eco pavement-, as well as use building materials that are
considered recyclable – timber – in the indoor finish of
the building. Eco balance evaluation will be performed on
building materials.
Operation. The calculated energy consumption is
177 kWh/m² per year. Main heating- centralized city
networks, hot water preparation – solar collectors. Air
processing equipment with 50-75% heat recovery and 40%
humidity recovery. Power supply- centralized networks,
additionally- photovoltaic cells, providing enough power to
illuminate the territory. In lighting system there will be used
luminaries with high-frequency triggers and luminescence
and LED bulbs. With multifunctional management system
lighting will be provided autonomously for each room
depending on the situation. For ground heat obtaining
there will be used heat pumps and energy piles installed
3–5 m deep, there will be installed sewage wastewater heat
recovery system. For warm floor and concrete covering
heating/cooling systems there will be used low temperature
heat carriers, equipped with automatic regulation and
management systems for maintaining the regime in the
rooms. In auditoriums it is intended to use active ceiling
panels for heating/cooling. There will be installed BMS
for the operation, maintenance and energy consumption
control. The module will automatically be compared with
the actual and mathematically optimal consumption, giving
the possibility to react on possible consumption increase or
to see the impact of saving measures. The intended water
saving method includes new saving technologies – economic
WC equipment, varied rainwater storage and use in watering.
Waste will be sorted into compostable, reusable, combustible
and those that end up in dumpsites.
Territorial planning.
Section of the building.
26
No m i n a t i o n | Most sustainable project in Latvia 2013
Ambulatory health care
centre in Ventspils
Public building, policlinic,
Ventspils, Raiņa street 6/8.
Project author architect
Andra Bula, SIA «OZOLA
& BULA, Arhitektu birojs».
Engineering calculationsi
Mg.sc. ing., building
engineering expert Andris
Vulāns. Constructor: General
partnership «Piegādātāju
apvienība RBSSKALS,
RBSSKALS Būvvadība,
RBSSKALS Būvsabiedrība un
Ostas Celtnieks». Customer:
Ventspils city municipality
body «Komunālā pārvalde».
Energy efficiency calculations
were done using passive
building design program–
PHPP2007. Solutions provided
building construction
according to low energy
consumption principles,
giving the opportunity to
create a modern, health care
infrastructure.
New building and
reconstruction. Total building
area- 1989 m2, heated area
– 1954,9 m2. Number of
employees– 75, number of
visitors during three months’
time– 35 200. Approval of
technical project – October
of 2010. Put into operation –
November of 2012.
Construction costs 1 963
017,23 LVL (without PVN).
Visual material:
«Ozola&Bula»
27
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Location.
Roof construction.
Brīvības iela
streets of the city, in historical area. To provide easy access by car, the
territory was expanded adding the nearby land strip. The building is
situated according to perimetrical building principles.
Construction. The building is built of Portland cement blocks,
partition walls are constructed of metal column-frame construction
with plasterboard slab cladding. In the rooms where radiation
protection has to be ensured there is a monolith concrete partition
wall. Intermediate floor slabs- monolith reinforced concrete. Wall
insulation – 300 mm mineral wool layer, roof- 450-550 mm. For
external finish there is used suspended facade system. Roof covering
for slant roofs- titanium zinc sheets. Windows – glass paned in
timber frames. In hallways the suspended ceiling type was chosen
regardin the acoustic requirements. The building corresponds to U2
fire safety category, as separate fire safety divisions there are designed
two stairways, utility rooms, archive room as well as groups of rooms
with different functional significance. There is a fire alarm with
voice notification system. Environmental accessibility requirements
are observed- ramps are installed, there is a lift, on stair handrail
near the lower and top steps there is embedded the floor number in
braille. The first and top step on each stairway is in contrasting tone.
With contrasting tone on floors and door frames the entrances in
examination and procedure cabinets are accentuated. Along hallway
walls there are handrails installed. On each floor there are toilets for
disabled. The building has atrium which provides day skylight. It
together with plants and watercourse not only provides the feeling
of the presence of nature, but also create the necessary microclimate
properties in the rooms. s
Building materials. Portland cement blocks, innovative
construction passive windows with Ug=0.54 W/m2K, g=50%,
insulation layer, concrete, plasterboard, finishing materials, colors.
Operation. After putting into operation the building received
energy efficiency temporary certificate in which it is said that the total
heat consumption of the building will be 104,18 MWh, specific heat
consumption 53,29 kWh/m2 per year, including heat consumption
for heating- 20 kWh/m2, hot water preparation- 33,29 kWh/ m2
per year. The heat consumption of the building in the time period
from 16th November of 2012 till 30th April of 2013 was 72,03 MWh,
specific heat consumption was 36,85 kWh/m2, total electricity
consumption was 46 329 kWh, specific electricity conumption was
23,7 kWh/m2, total electricity consumption for the operation of air
circulation system 265,2 kWh, electricity consumption for the facade
lighting of Ventspils policlinic was 3128,2 kWh. Heating elements
are equipped with thermostats with set heating regimes. Thermostat
is set on decreased temperature regime when the building users are
absent and switches to desirable temperature certain time before the
return of the users. Thermostats have the open window function- the
heating turns off when a significant temperature decrease is detected
during ventilation. In the time period from 3rd January of 2013 till
31st March the cold water consumption was 111m3. The planned cold
water consumption in the Ventspils policlinic project was Ventspils
408 m3 per year. For lighting there are used the energy efficient LED
bulbs. On the first floor of the building there are rooms intended
for storing of chemical substances and products as well as room for
disposal and collection of used syringes, bandages and other used
medicine materials.
a
Jāņa iel
Peld
Location. The building is located on the corner of two central
28
No m i n a t i o n | Most sustainable project in Latvia 2013
Passive office building
in Liepāja
Office building, Kūrmājas
avenue8/10, Liepāja. Projectenergy auditor Jānis Bērziņš
and architect Aivars Robiņš,
SIA «ARCHE», construction
calculations- energy auditor
Andris Vulāns, manager of the
construction project`s HVAC
part Ērika Lešinska.
Builder – «BIG Grupa».
Customer – «Lenkas Energo».
Designers had to accept
the challenge and work on
solutions so that the energy
consumption in the building
would not exceed the passive
house standard, at the same
time convincing the client
about the benefits from the
operation of the building.
New building. Number of
floors – 2. Area– 116,9 m2.
Number of Building users –
5. Put into operation in
December of 2012. Visual
Foto: material: «ARCHE»
29
Position. Designing the building according to passive house
construction principles, considerable attention has been paid to
the positioning in order to maximize the use of passive solar heat.
Windows are located on only one facade, facing southwest.
Construction. The enclosing structures with high thermal
insulation coefficient were selected in order to reach the set energy
efficiency targets and to combine the building`s appearance with
the architecture characteristic to the historic centre. External wall
construction has been built from 240 mm thick silicate blocks and
insulated with vacuum-type insulation, 40 mm in thickness, and
foam polystyrene sheets, 150mm in thickness, thermal conductivity
U=0,086 W/(m²xK). Floor has been built by constructing 300 mm
thick layer of foam polystyrene sheets on top of concrete base and
covering it with concrete levelling layer. Floor on top of ground
U=0,105 W/(m²xK). Attic ceiling- monolith reinforced concrete
slabs, insulated with 600 mm thick layer of cellulose insulation,
construction`s U=0,063 W/(m²xK). Eight cell window frames
and triple glazing units have been used with Uw=0,8 W/(m²xK).
Windows are built into insulation layer, the potential occurrence
of thermal bridges has been minimized. It has been achieved that
the value of thermal bridge Ψ will not exceed 0,01 W/m K. Air
permeability of the building is n50=0,40 1/h.
Building materials. Insulating materials have been produced
either in Latvia or Baltics, therefore the amount of CO2 emissions
caused by transportation is minimal. Innovation – vacuum
insulation, for which the nominal thermal conductivity coefficient
is 0,007 W/(m*K) and 2cm thick layer corresponds to 12cm thick
layer of mineral wool. It made it possible to give a classic shape to the
building as required by its location in the historic centre of the city.
Waste reduction during the construction process. Building
material paper and wooden packaging was being sorted. Layouts
were made for vacuum insulation and the exact number of panels
were ordered from the factory- assembling was done free of waste.
Microclimate. The chosen microclimate system has regenerative
heat recovery above 90%, humidity recovery and productivity of
400 m3/h. Air circulation will provide for CO2 concentration less
than 400 ppm above the concentration in the outdoor air. Ventilation
system has direct control- more than 10 transducers are used in
the process of increasing energy efficiency. 54 m³/h of fresh air per
person is provided. During summer the heat accumulated by the
air handling unit is being discharged by the night cooling function,
determining the cooling intervals depending on the air temperature
outside and indoors.
Attention has been paid to the use of renewable energy – during
winter the heat gained from office equipment, people, lighting has
been included in the overall balance sheet. It can compensate for the
heat losses of ventilation and heating thanks to the more than 90%
efficiency of the microclimate system and enclosing structures that
correspond to passive house standard.
The annual energy consumption: heating – 13,80 kWh/m², water
heating – 25,41 kWh/m², lighting and electrical office equipment–
19,16 kWh/m² , ventilation – 16,51 kWh/m² . Total annual energy
consumption of the building 74,88 kWh/m².
Operation. Separate monitoring of the ventilation system and
electricity and lighting consumption is provided. Monitoring and
control of the systems can be done remotely through a modem.
Rainwater from the roof is used for watering green plants
Sections of the building.
Technical
drawing of
the window
construction.
First floor plan.
Second floor plan.
30
No m i n a t i o n | Most sustainable project in Latvia 2013
Single-family house
«Vecmājas»
Single-family house
«Vecmājas», Dundaga
municipality, Latvia. Architects
Ervīns Krauklis and Mikus
Grende, SIA «Krauklis Grende»,
ventilation system – RTU
Heating, ventilation and air
conditioning student Kristaps
Safranovs. Construction
manager – carpenter Intars
Šulcs. Customer – private
person.
Project calculations was done
using PHPP 7.1 software. The
building is recognized as an
eco-house and has been of
interest for many. Indoor air
quality and thermal comfort
is assessed as outstanding by
the users.
New building. Number of
floors – 2. Area – 140,4 m2,
heated area– 116 m2. Number
of users – 2. Put into operation
in September 2012.
Photo: Ansis Starks,
«Krauklis Grende» Archive,
Visual material:
«Krauklis
Foto:
Grende»
Location.
31
Location. Longest facades are oriented towards North and South.
Construction. Foundation – monolith reinforced concrete slab
on foam glass gravel. U=0,144 W/(m2K). Walls – timber frame
double-T elements, glued-laminated timber columns, U=0,088 W/
(m2K). Roof – timber frame double-T elements, U=0,080 W/(m2K).
Windows – glazed curtain wall facade system, 92 mm timber
profiles, glazing –triple pane with argon gas filling and selective
coating, Uw=0,796 W/(m2K), manufacturer indicated sealing has
been used during installation. Airtightness testing result at 50Pa
pressure – 0,44 1/h. The building is designed as thermal bridge free
construction.
Building materials. Local – timber, fibrolite, lime plaster, OSB,
window profiles, glass panes, linseed oil paint. Materials containing
recycled materials– foam glass gravel, cellulose.
Waste reduction during construction process. Building
contractor would have to sort waste and packaging. The material
suppliers have to take the sorted packaging back and reuse it for
building material packaging. Transportation is oriented on vehicles
that correspond to EURO 3 standard or consume alternative fuels,
for example biofuel. Multiple construction stages were carried out
under temporary greenhouse construction, protecting the materials
and structures during construction and creating good conditions
for workers. Afterwards the greenhouse was dismantled and timber
was used for building firewood shed.
Microclimate. Ventilation unit with 91% heat recovery efficiency,
electricity consumption 0,31 kWh/m3. The unit has been installed
in the first floor bathroom behind suspended ceiling, supply and
extract air ducts – in ceiling niche along the Northern external wall,
thus minimizing the length of the main supply and extract air ducts
for the rooms on both floors. Ventilation system can be operated
in three modes: nominal, providing each building user with at least
30 m3/h of fresh air, minimal and maximal.
Specific space heat demand at +20 °C is 26,2 kWh/m2 per year
and is covered from renewable energy source – firewood. Heating
system – fireplace with outdoor air intake, there is no additional
heating distribution system. Domestic hot water producing
system– vacuum pipe collectors (2,6 m2) and a boiler with
additional electric heating element. 45% of energy necessary for
domestic hot water production is covered by solar energy. 55% – by
electricity, consuming 13,2 kWh/m2 per year. Lighting – energysaving light bulbs. Household appliances – energy class at least A.
Calculated electricity consumption on ventilation – 2,04 kWh/
m2 per year, on lighting – 2,96 kWh/m2, other electrical devices –
16,4 kWh/m2. Total electricity consumption from the October 2012
until April 2013 was 3780 kWh.
Operation. Energy consumption, air temperature, air humidity
as well as CO2 concentration have been monitored. Waste sorting
– paper, glass, plastic, municipal waste, compostable waste.
Water is obtained locally from within the territory; it has to be
saved considering the fluctuating level of ground water. Water
consumption – 3000 l/per month. Environmentally friendly
detergents are being used; the water purified in biological treatment
unit is being used for watering the garden.
Section of the building.
First floor plan.
Second floor plan.
32
No m i n a t i o n | Most sustainable project in Latvia 2013
Student Dormitory of Ērgļi
Vocational secondary school
Student Dormitory of Ērgļi
Vocational secondary school,
Lauksaimniecības Street
14, Ērgļi, Latvia. Project
authors and construction
management – architects
Ervīns Krauklis and Ilze
Prusaka, SIA «Krauklis
Grende», PHPP and thermal
bridge calculation- engineer
Mare Reinberga, construction
engineers- Andris Zvirbulis
and Gunta Kampmane,
heating and ventilation
system – engineer Jevgenijs
Lurje. Builder – «Kvadrum».
Customer – Ērgļi Vocational
secondary school.
Calculations of the project
done using PHPP 7.1 program.
Building users assess the
air quality and thermal
comfort as outstanding. The
building is anticipated to be
Europe-wide pilot project
for the approbation of the
new Passive House Institute
refurbishment standard
«EnerPHit» in Northern
European climate and it is a
part of the Vocational school`s
development plan- to become
training and competence
centre of low energy use and
CO2 neutral construction in
Northern Europe.
Renovation. The building`s
annual specific space heat
demand before reconstruction
was 166,4 kWh/(m2a). The
service hotel was built in year
1972 as a standardised project
for 384 students, it is oriented
N-S direction, longest facades
against E un W, there is a
basement underneath the
whole building area. Number
of floors – 5. Area – 4870 m2,
heating area – 3841 m2.
Number of building users–
100. Put into operation in
November of 2012. Cost of the
project – 593 686,16 Ls.
Photo and
Technical drawings:
Foto:
«Krauklis
Grende»
33
Renovation. Basement ceiling has been insulated with
200mm of hard mineral wool, U=0,169 W/(m2K). Thermal
bridges in the points of contact of basement`s bulkheads and
ceiling have been reduced by insulating with 100mm hard
mineral wool strips. Walls have been insulated with 400mm
mineral wool in timber frame, U=0,081 W/(m2K). Upper
floor ceiling has been insulated with 750mm loose mineral
wool, U=0,061 W/(m2K). Windows- 92 mm wooden
profiles, glazing- triple-glazed with argon gas filling and
selective coating, Uw=0,916 W/(m2K). Airtightness (blower
door) test result 0,57 1/h at 50Pa pressure. Environmentally
friendly and energy efficient solution for the façade
insulation frame- steel consoles have been substituted by
glued wooden beams.
Building materials. Local – timber, fibrolite, plaster, OSB,
window profiles, insulating glass units, glulam. Materials
containing recycled raw materials- mineral wool, loose
mineral wool.
Waste reduction during construction process.
Wooden frames have been produced in workshop without
polluting the environment. Empty packages were sorted on
the construction site and suppliers had to take them back,
recycle and use them as packaging of building materials for
the second time.
Microclimate. Mechanical ventilation system with
heat recovery efficiency of 81% , electricity consumption
0,47 Wh/m3. Innovative solution–supply and extract
air ducts have been placed in the insulation frame of the
facade and the roof. Ventilation system can be operated
in two modes: normal with 0,3 1/h air change rate and on
maximum. During winter the air in the rooms is humidified
using moisture releasing plants. The rotary heat exchanger
of the ventilation system provides partial humidity recovery
from the extract air. Sliding wooden shutters provide 30%
shading, thus protecting rooms from overheating.
Annual space heating demand at T=+20 °C corresponds
to 16,1 kWh/m2 a year and is provided from renewable
energy resource – woodchips. Building is connected to the
local central heating network. Dormitory room heating
is provided by 400W convectors put in every room.
Domestic hot water in the heating season is produced
using heat exchanger of the central heating system, energy
consumption– 30,8 kWh/m2 a year. During summer hot
water is produced using electrical boilers. It is intended
to set up solar collectors for the preparation of hot water
in summer period. Lighting – energy saving light-bulbs,
in common rooms- infrared motion sensors. Electricity
consumption– 3,06 kWh/m2 a year for ventilation and
1,32 kWh/m2 for lighting.
Operation. Heat and electricity consumption is being
monitored. Waste sorting- paper and cardboard, plastic, glass,
GFT and organic waste. Users are being educated on water
saving, it is intended to set up water saving plumbing devices.
Detail of base.
Section of the facade.
34
No m i n a t i o n | Most sustainable project in Latvia 2013
Energy efficient passive
new single-family house
Energy efficient passive new
single-family house, Ernsta
Bergmaņa Street 5, Riga.
Architects- Ervīns Krauklis,
Ruta Vanaga, Alice Rosini,
SIA «Krauklis Grende»,
PHPP and thermal bridge
calculations – engineer Mare
Reinberga, structural engineer
– Anrijs Rudzis, heating and
ventilation system– engineer
Jevgenijs Lurje. Technological
drawings of timber structure
– carpenter Gints Biezais.
Builder – «Dziedrs». Customer
– private person.
With intelligent planning
and high-quality
construction work the
project demonstrates the
possibility to build spacious
yet economical and rational
passive houses.
New building. Total area–
468,72 m2, heated area –
382,4 m2. Planned number
of users – 5 people. Project
approved in June 2011.
Planned to be put into
operation on September
2013.
Location.
Color solutions
of the facade.
Photo: Ansis Starks,
«Krauklis Grende» Archive,
Visual materials and
technical drawings:
«Krauklis
Foto:
Grende»
35
Location. The building`s glass facade is oriented towards South in
order to maximise solar gains in winter. The trees in the territory will
be preserved and the characteristic land cover will be restored, a lawn
will be created, which in certain areas will be reinforced with a cell
mat, enabling the parking of cars.
Construction. Foundation – monolith reinforced concrete slab
on foam glass gravel layer, U=0,095 W/(m2K). Walls- supporting
wood element frame with I elements insulation frame, glued wood
columns, insulation – blown-in cellulose, U=0,068 W/(m2K).
Second floor ceiling – glulam timber panel with blown-in cellulose
insulation, U=0,058 W/(m2K). Windows – glazed curtain wall facade
system and innovative wooden window profiles, glazing- triple pane
with argon gas filling and selective coating, Uw=0,654 W/(m2K).
Windows are installed in insulation layer, sealing – hemp fibre
insulation and wood fibreboards. South side skylight windows of the
central hallway that brings in the daylight, at the same time are used
as night ventilation openings in summer. Airtightness (blower door)
test result – 0,22 1/h at 50 Pa pressure.
Waste reduction during construction process. Timber frame
elements have been prefabricated in workshop, without polluting
the environment. Empty packages were sorted on the construction
site and suppliers had to take them back, recycle and use them as
packaging of building materials for the second time. Transportation
is oriented on vehicles that correspond to EURO 3 standard or
consume alternative fuels, for example biofuel.
Building materials. Local – hardwood, fibrolite, lime cement
plaster, OSB, plywood, window profiles, glass panes, linseed oil paint,
glued laminated timber, innovative passive house certified windows.
Environmentally friendly- linseed oil paint, hemp fibre insulation,
lime cement plaster, timber has not been treated with chemicals.
Materials containing recycled raw materials- crushed foam glass,
cellulose. Timber has been acquired in the woods of the building
owner and naturally dried in stack for three years.
Microclimate. Mechanical ventilation system, heat recovery unit
with 89% efficiency and electricity consumption 0,29 kWh/m3. For
the frost protection of the ventilation system an underground heat
exchanger has been used, which will also provide pre-cooling of
the intake air and additional passive cooling in summer. Diameter
of the pipe 250 mm, overall length 60m. Ventilation system can
operate in three modes: nominal, supplying each building user with
at least 30 m3/h of fresh air, minimal and maximal. In winter it is
supposed to additionally humidify the air with humidity-releasing
houseplants and using innovative solution – indoor air humidifying
from the pool, in which the temperature and deposition modes will
be changed, regulating the intensity of evaporation. Pool disinfection
planned without the use of chlorine.
Calculated specific annual space heating demand T=+20 °C is
15,45 kWh/m2 per year, and is provided from renewable energy
sources- firewood and ground heat. The building can be partly
heated with the air supplied by ventilation system (calculated heating
load 17,6 W/m2, can provide up to 9,1 W/m2). Domestic hot water
production- panel (14,1 m2) collectors and a boiler connected to
fireplace and heat pump. 43% of the energy for preparation of hot
water will be obtained from sun. Lighting – economical and LED
light bulbs. Appliances –class A. Calculated electricity consumption:
ventilation -1,90 kWh/m2 per year, lighting – 0,88 kWh/(m2a), other
electrical appliances – 9,32 kWh/(m2a).
Operation. A five year long energy monitoring is intended in the
building. Appliances- with optimized water consumption. Hot water
consumption – 6000 l per month, cold– 9000 l. Groundwater for
territory watering. Waste sorting – paper, glass, plastic, domestic
waste, organic waste.
First floor plan.
Second floor plan.
Window construction.
36
No m i n a t i o n | Most sustainable project in Latvia 2013
Project of «Latvia`s State
Forests» («Latvijas Valsts
Meži») office buildings in
Jelgava, Valmiera, Dundaga
The project was developed
for design competition for
standardised office buildings
of «Latvia`s State Forests»
(AS «Latvijas Valsts Meži») in
Jelgava, Valmiera, Dundaga.
Architects – Ervīns Krauklis,
Jānis Skanis, Nataļja Skane,
Roberts Sekste, RTU APF
architecture student Līva
Nordmane.
Calculations done using
PHPP 2007 software. The
building was intended
as a sustainable building
example project for new
public buildings in Latvia
with the possibility to use
this good practice in other
projects. The goal to use highquality timber and ecological
finishing materials has been
fully reached in the project.
The building conforms
to the highest evaluation
requirements of energy
efficient and green buildings
without the use of expensive
technical systems. .
New building. Planned area –
2192,2 m2, heated area –
1489,6 m2. Planned number
of building users– 70, during
conferences and events- up to
160 people.
Section of the building.
Visual materials:
«Krauklis Grende»
37
Location. The shape of the building fits well in all three
locations, it is adapted the way to be used as a standardised
project with a focus on using solar energy. It is planned to plant
new trees in the territory.
Construction. The compact structure with the planned
green roof is efficient from the aspects of energy consumption,
room lighting and functionality. U-value of the constructions:
external wall – 0,10 W/(m2K), insulated roofs– 0,08 W/(m2K),
plinth wall – 0,12 W/(m2K), floor slab – 0,12 W/(m2K), windows
and the glazed facade systems – 0,68 W/(m2K). Floor slab and
basement- monolith reinforced concrete construction. Foam
glass gravel is used for the insulation of floor slabs, for plinth
walls- foam glass plate insulation. The load bearing structure
is designed as a timber frame with massive as well as glulam
timber elements. Intermediate and upper floor slabs are
constructed from massive wood panels 230x1500x24 000 mm,
assembled as a uniform layer. The building airtightness
would be ensured with 18 mm plywood layer between loadbearing and insulation frames and by using special tapes for
plywood connections. Airtight layer would be uninterrupted.
Construction is intended to be thermal bridge free. Windows
installed in the insulation frame level.
Building materials. Materials containing recycled
raw materials- foam glass gravel and plate insulation.
Environmentally friendly materials- timber, glulam timber,
wood fibreboard blown-in wood fibre insulation, foam glass
gravel and insulation plates, linseed oil paint.
Waste reduction during construction process. When
using pre-fabricated timber frame structure and panels, there
is addition waste. Standardised project helps to rationalise
the design, building structure production and construction
processes. Building contractor would have to sort waste and
packaging. The material suppliers have to take the sorted
packaging back and reuse it for building material packaging.
Microclimate. Mechanical ventilation system with 81% heat
recovery efficiency (system with rotary heat exchanger of the
ventilation system provides partial humidity recovery from the
extract air), electricity consumption 0,47 kWh/m3. Fresh air
supply – 30 m3/h per person. Ventilation system can be operated
in three modes- minimal (night), nominal, providing 0.3 l/h air
change in the building and maximum. The overheating of the
building is avoided by night ventilation (additional air change
of 0.3l/h), 40% additional shading by roller blinds on South
side and wood lamellas on West and East sides, in summer
the air change rate of the ventilation system can be increased
up to 0.61/h. Additional ventilation units are planned for the
conference room.
The calculated specific space heating demand of the building at
T=+22 °C is 11–15 kWh/m2 per year, which would be covered
by renewable energy sources- wood pellets. Lighting – energysaving and LED light-bulbs, infra-red motion sensors in
hallways. Domestic hot water in the heating season is produced
with the heat from the district heating system supported
by vacuum tube solar collector, Domestic hot water energy
demand– 12,9 kWh/m2 per year. From that 69% is covered by
40 m2 solar collectors, fully providing the building with hot
water from the beginning of April till the end of August.
Operation. Water consumption per month– 30 800 l,
wastewater treatment would be carried out with artificial
wetland, using the treated water for household needs, in toilets
and for territory watering. Rainwater collection and utilization is
intended. The artificial wetland and pool would be improvement
elements. Waste sorting is planned for- paper, glass, plastic,
household waste.
Location in Jelgava.
Location in Valmiera.
Location in Dundaga.
38
No m i n a t i o n | Most sustainable project in Latvia 2013
Multifunctional sports centre
Multifunctional sports centre,
Bauska. Architect Ineta Buka,
SIA «Rem Pro».
Pool house has been
designed as low-energy
building. The social aspect- its
universality and openness.
Due to functional planning
the building can be easy to
use by groups of students
simultaneously with individual
visitors.
New building. Heating area –
4001,05 m2, building volume –
15 987,0 m3. Expected number
of users– 200 people.
Visual
Foto: material: «Rem Pro»
39
Position. The land strip is located near the old town, thus requiring
the building to be incorporated in the structure of the city. There is
a pedestrian area intended, its surrounding birch alley is the cities
green ornament. The architectonic solution has been determined by
the distinguishable relief, making an optimal use of the difference in
level- entrance in the building is designed in two levels, no need for
building supporting walls.
Layout. The building and the territory is intended to be free of
obstacles that would limit the movements of people with functional
impairment. Near the main entrance there are intended marked
parking spots for people with special needs.
Waste reducing during construction process. Contractor
has to make sure to reduce and recycle waste produced during
construction process, and has to develop clean technologies,
removing the causes of waste production. Means of transportation
that correspond to at least EURO 3 standard or vehicles that use
alternative fuels (for example, biofuel) have to be preferred,
Building materials. It is planned to use environmentally
friendly certified materials, such that present high compatibility
with environment and health in their acquisition, processing,
transportation, use and waste management. Wood materials
used in construction have to be legally obtained from sustainable
sources, observing environmental interests. VOCs (volatile organic
compounds) emissions from building materials being used will not
exceed the limiting values determined by European standards.
Microclimate. The average room temperature is planned to be
+21 °C. For the heating of rooms water systems are intended and
additional air heating system for the pool area. The anticipated air
circulation rate is 2,7l/h.
The building is planned to be low-energy with annual heat
consumption being less than 25 kWh/m2. Energy efficiency
estimation – 2680,4 MWh or 669,9 kWh/m2 a year, including: energy
consumption for heating 98,24 MWh or 24,55 kWh/m2 a year;
preparing of hot water– 2224,74 MWh or 556,04 kWh/m2 a year;
cooling 154,52 MWh or 38,62 kWh/m2 a year; lighting 110,71 MWh
or 27,67 kWh/m2 a year; ventilation 92,21 MWh or 23,05 kWh/m2 a
year. The surface plane of the roof is designed so that from the south
side there would be enough area to install solar collectors. The total
amount of energy from renewable for the preparation of hot water
is116,0 MWh or 28,99 kWh/m2 a year, which accounts for 4,33% of
the overall energy use.
Operation. In order to monitor the energy use after the completion
of the project separate meters will be set up for heating, ventilation,
lighting and hot water use. During the stage of the building being
used automation of ventilation and heating systems and hot water
use will be set up in order to optimize energy consumption and it
will allow for a rational use of resources. Energy use is affected by the
human factor, therefore a seminar will be organized «Energy use
and resource control». In the building there will be provided control
of water use, safety and continuity of the water supply services,
and all the activities related to the use of water resources will be
performed as to not deteriorate the state of the surface water and the
groundwater.
40
No m i n a t i o n | Most sustainable student idea in Latvia 2013
«Combination»
(«Kombinācija») –
private house and its
territory as a public space
«Combination»- the concept
of RTU APF student Klinta
Pickaine, addresses the idea of
a private house with adjacent
privately public territory.
The idea has been created for
a specific place in Ķīpsala, on
the Daugava embankment,
Ģipša street 13, Riga,
imagining it as a private
house project commissioned
by a 54 year old couple who
moves from Australia to live
in Latvia. The clients terms:
silent, exclusive location, near
the city centre, has to have
green zone with privately
public function, are willing
to renovate degraded or
unutilized territory. The
building has to provide
living space for the owners,
rentable apartments and
play and recreation rooms for
children and young peoplethe multifunctional usability
is an innovation on Latvian
scale. The territory doesn`t
have a fence, it has play and
recreational zones. The sense
of Australia is brought in
with a winter garden and a
pool. There are bicycle stands
located in the nearby area.
Exclusive innovation- it is
intended to create a new
route for the river`s small
boat with a stop close to the
territory.
New building. Area of the
territory – 100x45 m. Area
of the building – 300 m2.
Planned number of building
users – 8.
Foto: K. Pickaine
Photo:
Location. Ķīpsala is rich with a variety of buildings, alternating between modern and historical
buildings. Ķīpsala is a great place, which attracts with the beautiful view of the panorama of Old Town
and is popular amongst those who look for peaceful recreation. The building location has been chosen
by the end of Ģipša street by Zundas canal in order to improve and further the biological diversity of the
neighbourhood. Right now there is an unkempt landscape. The buildings orientation towards the cardinal
points will bring in most of the natural lighting. The land property is around 4m above the water level
therefore there is no risk of flooding.
Construction. The plan is to build a three storey building, twisted in multiple directions and creating
owners the possibility to overlook the territory. The roofs of the first and second floor will be green
terraces with paths, recreation spots and plants. The owners apartment is designed on the third floor,
children`s play room- on the second floor, two rentable apartments- on the first floor. The winter garden
with pool will be shared by the owners and tenants. The building has good insulation, wind and vapour
barriers, construction can be ventilated, the supporting structure is built from ceramic blocks, in the
ceiling of the second and third floor metal mountings are built in. The wooden boards used on the facade
incorporate the building in the environment, they are arranged vertically and horizontally, adapting to the
environment by the means of rhythm. The chosen colour is grey-black, in order to expedite the effect of
natural aging. The sizes of windows are such that they wouldn`t create perceivable heat losses.
Building materials. Ecological ceramic building materials and timber is being used, for decorationclay plaster, straw walls, timber and stone tile floors.
Microclimate. Desirable microclimate is ensured by ecological building materials. Ventilation and
air humidity regulation systems will be installed separately so that they could be changed according to
need. Individual microclimate will be ensured by independent heating system. Windows can be opened
to ventilate the rooms. Electricity costs will be saved by wind generators located in the territory with
connected solar panels, which will produce the necessary amount of energy for the maintenance of the
complex. Two wind generators with 20 kW output are necessary. During sunny winter days the building
will receive small portion of heat from the winter garden which will act as a greenhouse. Basic heating
system will be a firewood boiler in the basement. The firewood for the first heating season will be
processed wood materials gathered during the cleansing of the territory.
Operation is intended to be ensured by paid staff, which manages the territory, maintains the facilities
and ensures safety. In the basement it is intended to place a unit for the used water treatment, in order to
make it suitable for the watering of the territory, as well as rain water collection and treatment systems that
will provide the pool with necessary water resources. Waste sorting is intended. During night-time the
territory is illuminated as well as its access road.
No m i n a t i o n | Most sustainable student idea in Latvia 2013
41
Modern log house
Author of the idea: Arvis
Andersons. An interesting
idea, where a cored glued
timber contruction shell
can be used as a log house
element, but it needs to be
evaluated in cooperation
with specialists of building
construction statics and
constructional physics.
It would further develop
interesting ideas, finding the
area of use.
Construtction. Implementation of the log house method according to sustainable building standard and
requirements. Main idea of the method- with a gluing method, using thermo reactive, constructive glues, a
hollow element/beam is pasted together, which after being assembled makes a mould which afterwards is
filled with Eco wool by high pressure. By this method a monolith and dense insulation layer locked into the
timber construction is acquired. Eco wool layer between side boards in this scenario is 400mm. The total
wall thickness- 480mm. The same insulation thickness could be used in the roof and floor.
Sustainability. The sustainability principle of the method manifests in the fact that 1m3 of firewood
costs almost as much as 1m3 of the wool, therefore it is more reasonable to invest in the wool because it
doesn`t have to be bought every year. No membranes are used there and walls with their mass ensure the
humidity regulation of the room. The communications are installed in the hollow part of the wall which
are afterwards locked in the insulation layer. In order to avoid thermal bridges there is not used «the corner
of the house» (pakse construction) as a type of corner joint. The beam connections are also model in a
way to avoid thermal bridges. The sustainability could also manifest in the fact that the construction could
withstand planned as well as unplanned moving. It is possible to use the method in realit.
42
No m i n a t i o n | Most sustainable student idea in Latvia 2013
Interior proposal for the
great hall of Tukuma district
Slampes municipality
Zemgales high school
Interior proposal for the
great hall of Tukuma district
Slampes municipality
Zemgales highscool.
Authors – Riga Building
College (RBC) architecture
students Mikus Hercs, Madara
Žeikare, Marija Tkačenko,
Zanda Priedeslaipa. Teachers –
Inese Reitāle, Gunta Ābele.
In December of 2010 the
roof of the great hall in
Zemgales high school failed to
withstand the snow load and
caved. New roof construction
was built and the walls were
strengthened. Upon the
request of Zemgales high
school administration RBC
student group developed
a proposal for the interior
as a tribute to sustainable
development of the school,
thinking about the use of the
hall not only for the school`s
needs but also on regional
scale.
Reconstruction of the great
hall. Total area – 512 m2.
Visual materials and
technical drawings:
Foto:
by RCK student group.
43
Construction. The great hall is separated by internal walls, the
room has small heat losses. The temporary roof, saving the expenses,
has additional heat insulation. Significant changes in the existing
construction are not planned. The wall plane will be levelled by
plasterboard structure, hiding the featureless building structures.
Lighting. Due to limited daylight there is an extensive use of
artificial lighting, thus the use of LED bulbs is advisable.
Microclimate. There are planned two systems to ensure air
circulation – vent in the roof construction part and inlet through
an air pipe canal system buried 2m deep. The open end of the canal
would be located in the courtyard. Inlet during summer would help
to cool the rooms, during winter the air would warm up before it
reaches the room.
Heating. Heating elements would be equipped with temperature
regime regulators, they are inserted in the wall plane in such a way as
not to cover the flow of warm air.
Materials. For flooring it is planned to use vinyl material, which is
appropriate for the usage of the public space and has low operational
costs. Stage ladder is made from wooden carcass construction, timber
is provided by a local manufacturer. In the entrance section of the
hall there are planned concrete step construction and seat elevations.
Concrete manufacturing and using requires the least amount of
energy in comparison with other load-bearing materials. It is good
at accumulating heat. Concrete construction in a room are heat
accumulators and temperature fluctuation balancers.
Waste reduction during construction process. Large waste
doesn`t form, the particle boards of the partition wall to be repaired
are reusable.
Environment accessibility. It is intended to install diagonal lift
platform 80cm wide when open and the possibility to use it in three
directions.
Acoustics. The back wall part of the hall is covered with 40mm
thick acoustic panels, for ceiling there are used 20 mm thick panels,
which absorb and reflect the sound.
Water. The rainwater from the hall`s roof would be drained into
storage and processing tanks buried in the decorative 800 m2 large
courtyard and used for watering the territory.
Stage curtains.
Concrete steps in the entrance
part of the hall.
Plan of the hall.
Section od the hall.
Acoustic solutions.
44
No m i n a t i o n | Most sustainable student idea in Latvia 2013
Interior proposal for the
great hall of Tukuma district
Slampes municipality
Zemgales high school
Interior proposal for the
great hall of Tukuma district
Slampes municipality
Zemgales highscool.
Authors – Riga Building
College (RBC) architecture
students Ieva Silbauma, Baiba
Elstiņa, Madara Lezdiņa, Anna
Rake. Teachers– Inese Reitāle,
Gunta Ābele.
In December of 2010 the
roof of the great hall in
Zemgales high school failed to
withstand the snow load and
caved. New roof construction
was built and the walls were
strengthened. Upon the
request of Zemgales high
school administration RBC
student group developed
a proposal for the interior
as a tribute to sustainable
development of the school,
thinking about the use of the
hall not only for the school`s
needs but also on regional
scale.
Reconstruction of the great
hall. Total area – 512 m2.
Visual materials and
technical drawings:
Foto:
by RCK student group
45
Heating. Infrared heating panels are intended. The placement of
regulating mechanisms would divide the hall in several zones and in
cases when the whole hall is not used it would allow to maintain the
necessary temperature in the zone that is being used instead of the
whole hall, thus reducing electricity consumption. Heating panels
would be integrated in the acoustic ceiling.
Lighting. It is planned to use LED bulbs, which would be divided
into separately regulated zones, providing the necessary lighting in
each of those zones.
Microclimate. A hybrid ventilation system with rotating generator
recuperation, that would automatically ensure the ventilation
intensity depending on the user load in the hall. Heat recovery
possibility from the exhaust air reach 80%.
Color solutions. It is planned to use mainly the color white as well
as gray shade gradation, for accents- purple. Color white is cheaper
than tinted color and optically expands the room. As an interior accent
the traditional Latvian Sun sign has been used. This sign protects and
brings blessing, it also is a symbol of eternal movement and life.
Materials. Floor finish– multilayer PVC cover floor tiles with
concrete texture, which have lower operational costs and are easier
to maintain when compared to parquet. They have the, 43, abrasion
degree, which ensures durability and permanency. Chair covering is
intended to be abrasive easily maintained fabric with Teflon cover.
It is intended to trust the manufacturing of the interior equipment
to local craftsmen. The stage steps are designed as a module systemlight metal structures, easily moved with multifunctional use:
choir performances, for fixing the stage decorations, theater play
scenography, placement of exhibitions. It is possible to use them in the
organization of outdoor events- in the courtyard or field of the school.
Waste reduction during construction process. The project
envisages to reuse the brick wall material from the dismantled mezzanine floor level wall, when building the new wall in the stage area.
Environment accessibility. The project envisages to install
vertical chair lift by the entrance with platform of the size 160x90 cm
and load capacity of 225 kg.
Acoustics. Above the stage it is planned to place angled panels
with sound reflection coefficient of αw-0.1, which would allow for
the sound to reach the audience, but above sitting area there would
be sound absorbing panels with coefficient of αw-0.8, which would
prohibit the sound from reflecting and would create a comfortable
sound perception for the audience. Also the floor, wall, furniture
and stage curtain materials have been chosen in order to raise the
euphony level in the hall.
PVC grīdas segums
Izlīdzinošā kārta
Tvaika izolācija
Siltumizolācija
Plan of the hall.
First floor furniture plan (for 300 spectators).
2.5mm
50mm
0.3mm
200mm
Dzelzsbetona plātne 200mm
Siltumizolācija
Hidroizolācija
Blietēta grunts
100mm
0.3mm
Ventilation.
VENTILĀCIJAS SHĒMA
Koka dēļu segums 50x150mm
Nesošie grīdas gulšņi 100mm
Skaņas izolācija
100mm
Dzelzsbetona plātne 200mm
Stiegrotā betona izlīdzinošais slānis
Technical
drawings of
the floor
construction.
70mm
Stiegrotā betona izlīdzinošais slānis 35mm
Skaņas izolācija
50mm
Izlīdzinoša betona javas pamatne
20mm
Esošais dz/betona pārseguma panelis 220mm
Dekoratīva apdare
Izelpotais gaiss
Dabiskā ventilācija
Gaisa pieplūde
46
No m i n a t i o n | Most sustainable student idea in Latvia 2013
The Big Clean-up yard
improvement project –
Yard movement
ŠTE
INA
IELA
1
ZEN
ATJAUNOTS IELAS
BASKETBOLA LAUKUMS
3
12/1.00
AIZBERAMA
BEDRE
LIELAJĀ
TALKĀ
1
BRAUKŠANAS
TRASE
VELOSIPĒDIEM
4
2/0.80
1
BRĪVA VIETA BĒRNU
FUTBOLAM
4
2/0.80
160
0
300
3
12/1.00
165
00
130
00
4
2/0.80
300
0
900
0
130
00
00
0
400
170
110
00
00
0
120
710
00
440
100
00
0
500
0
3
8/1.00
360
18
8
24/0.80
4
2/0.80
4
2/0.80
0
600
0
6
5/0.60
1
19/0.40
5
8/1.00
8
11 000
50
0
320
PASĒDĒŠANAS
VIETA
PIEAUGUŠAJIEM
8
44/0.80
00
00
120
200
1
63 Eizenšteina Street, Riga.
Yard improvement project.
4
2/0.80
0
7
13/0.50
2
10/0.20
50
Visual materials: by group
of
university students
Foto:
4
2/0.80
5
12/1.00
15
Work is done on the day of
The Big Clean-up in April.
Funding – supporters of the
movement «The Big Cleanup», foundation «Riga 2014».
Since year 2013. Yards
that were cleaned-up and
improved on April 27th of 2013
in Riga– Valdeķu street 15,
Balvu street 9, S. Eizenšteina
street 63. Yards that were
cleaned-up and improved
on April 21st of 2012 in Riga –
Maskavas street 170/1 and
170/2, Kojusalas street`s 21a
and Balvu street`s 9 joint yard,
in Kurzeme – Kalētu village
Liepu alley 3 and 3A yard,
in Zemgale – Jelgava city
Satiksmes street 53 yard, in
Latgale – Cibla municipality
Felicianovas village yard of
the house «Atspulgas», in
Vidzeme – Madona city Gaujas
street 24, Veidenbauma
street 16 and 18, Rūpniecības
street 18B, 18C and 18D joint
yard. Yards that were cleanedup and improved on April
30th of 2011 in Riga – Nīcgales
street 48 yard, Zemgale –
Dobele city Bērzes street 26
yard, Latgale – Čornajas
parish, Ratnieki, Krasta street
1 yard, Kurzeme – Liepāja
Klaipēdas street 84 yard,
Vidzeme – Alūksne city Apes
street12 yard.
Z
S.EI
Yard movement –
improvement of apartment
building yards with
students developing the
project and involving the
residents in the creation and
implementation of ideas.
Author of the idea– Anete
Lesīte, journalist and painter.
Leader of organizers – Andra
Miklucāne, coordinator, leader
of the student competition –
architect Ilze Rudzāte. Groups
of student project authors are
represented by RTU, LLU, LMA,
RISEBA.
0
4
2/0.80
3
8/1.00
ATSKAITES PUNKTS
HORIZONTĀLAJĀM
LABIEKĀRTOJUMA
PIESAISTĒM
1
47
9 Balvu Street, Riga.
Yard improvement
project.
A
Idea. The yard project dates back to the spring of 2010, when
representatives of Latvian Landscape Architecture Association
for the first time realized an experimental yard clean-up model,
involving the residents. The basis of the yard movement is concern
for a sustainable development of the environment with voluntary
activities, in which cooperation manifests as an instrument of
promoting the social life of a public open space.
Goal. Till year 2018, the 100th birthday of Latvia, to make the
country the cleanest and place on the world map. The goal of the
project is to give impulse to the people to actively participate in the
process of yard cleaning and improving.
The process. Starts with a competition for residents to find three
yards, were environment improvements are necessary. Afterwards
there is a student competition for developing proposals, meeting with
the residents of the buildings, evaluation and selection of student
proposals. After another meeting with the residents of the buildings the
details of the proposal are developed, estimates of building materials
are drawn, materials are commissioned and delivered. The necessary
amount of building materials is calculated precisely to avoid a need
for additional transportation. Realization provides the possibility for
residents themselves to finish the started work by acquiring skills in
outdoor element creation, manufacturing, painting, maintaining,
greenery creation and cultivating during the Big Clean-up with the
help of professional architects, landscape architects and gardeners.
The essence of the project is based on a balanced approach to
the development of the environment, so that the outdoor lives of
residents would correspond to their needs and wishes. The key aspect
of the ideas is the use of recycled materials- the transformation of
materials and elements on the site according to the idea of yard`s
spatial development. The existing playgrounds and elements of
sports fields and recreational zones are fixed, integrating them into
the development solution. Greenery and groups of greenery as
well as making of flowerbeds are intended for the improvement of
the outdoor climate and raising the scenic value of the landscape.
Waste collecting is one of the main yearly activities of the Big
Clean-up movement, while the Yard movement strives to create
an environment where waste collecting is replaced by the change
of people’s attitude against the environment they live in. The yard
cleaning and improvement promotes their use- experience shows that
the number as well as variety of their users grows.
F
E
C
Ribes alpinum (9)
Uzbērums
B
+1
Uzbēruma
atbalsta siena
0
10
Slidkalniņš
+900
+700
+500
Ribes alpinum (4)
F
Phaseolus coccineus (31)
Šūpoles esošās
pārvietotas tuvāk
žogam
C
Amelanchier lamarkii (4)
Ribes aureum (4)
Esošs
nožogojums,
metāla režģis
+1
00
Lonicera (11)
Cornus mas (3)
00
90
A
+300
Jauns
nožogojums
Viburnum
lantana (4)
Soliņš
E
Smilšu kaste
Soliņi
Esošs
nožogojums,
koka dēļu
Terase
Šūpoles
no sponsoru
piedāvājuma
Nojume
Rotaļu zvēri
Soliņi
Atsperšūpoles
no sponsoru
piedāvājuma
no sponsoru
piedāvājuma
B
Esošs
nožogojums,
metāla režģis
Vingrošanas
pilsētiņa
Actinidia kolomikta (4)
Schisandra chinensis (4)
Norobežojuma
stabiņi, apaļkoks
Esošs betona
flīžu segums
Esošs
nožogojums,
koka dēļu
Stā vlau kum s
5 000
Atjaunojams
segums,
šķembas
Yard improvement project in «Atspulgas».
15 Valdeķu Street, Riga. Yard improvement project.
Pagalms
Valdeķu
ielā 15
48
No m i n a t i o n | Most sustainable student idea in Latvia 2013
Diploma project of the RTU
Faculty of Architecture and
urban planning «Revitalization
of the Mežciems public space»
In the Diploma project
«Revitalization of the
Mežciems public space»
by architecture student
Judīte Skujiņa deals with the
revitalization and sustainable
water treatment in the suburb
of Riga- Mežciems; solutions
include treatment and moving
of the sewage rainwater,
involving it in the recreational
function and revitalization
of the public space. At the
same time attention has been
paid to renewal of Gaiļezers
water body, providing natural
hydrological mode stream.
The supervisor of the Diploma
project is RTU Faculty of
Architecture and urban
planning asoc.prof. Dr. arch.
Sandra Treija.
Mežciems residential
area– built during years
of 1977–1985. Population
– 15 885 (year 2010 data).
Pedestrian street – 950 m
long. Lake «Gaiļezers» – in the
northeast part of Mežciems,
area- 7,14 ha, basin- 0,32 km2,
average depth- 1,0 m.
Visual material:
Foto:
J.
Skujiņa
49
The aim of the Diploma project. To offer a solution for the
revitalization of the public space in Mežciems, connecting the
pedestrian street with the territory by the lake «Gaiļezers».
Area for activities and the establishment of new social objectcommunity centre, have been outlined as well as solutions
for parking. During the study of the environment and from
the survey of residents it was found that there are three main
problems: overgrowing of the Lake Gaiļezers, inactive pedestrian
street and overload of cars in the inner blocks of the suburb.
Lake Gaiļezers has lost its natural water inlets and has started to
overgrow, the banks are marshy and partly overgrown, access to
water is possible only in few spots, the bottom is oozy, but water
of the lake is clear. The lake attracts water birds and fish. On the
South side between Gaiļezera street and the lake there is a flow of
wastewater, which creates a hazard risk.
Sustainable water treatment. Prevention of the overgrowing
of Lake Gaiļezers is planned with methods that have the least
effect on the natural environment and provide a stream. It is
intended to clean River Gaiļupīte which connects Lake Gaiļezers
with Dambjapurva lake and later on as river Strazdupīte flows
into Juglas. The rainwater in the suburb is first received by
the sewage, then filtered, treated and in the end gathered in a
reservoir. From there it is pumped in the open basin and further
on flows into Lake Gaiļezers.
Solution. In the intention to revitalize Mežciems public space
it is planned to use a connected system with water, movement,
activity and greenery elements. Pedestrian route would begin
by the shopping centre marked by a recreational zone with a
fountain, and end with an access route to the Lake Gaiļezers and
the community house. Next to the pedestrian route activities
zone is planned- sports, recreation, children playgrounds, skate
park. Water is one of the most important components of the
system. Its path is made up from multiple basins, in the beginning
directing it to fountain and continuing as 10-12 cm deep water
pool path. Created by the level difference between Gaiļezera street
and the territory around the lake, provides the oxidation of the
water. On the pedestrian routes environmental accessibility is
observed. Route to the lake shore is organized in two levels- over
the pedestrian crossing on Gaiļezera street or over the pedestrian
bridge, which also serves as a sightseeing platform, and by the
lake separates into two routes: toward West to residential area
and towards East to the community house. Pedestrian bridge
in the lake territory is concluded by a timber footbridge. By the
lake shore there is created in Latvia little known social objectcommunity house in which there are organizations that provide
social, educational and recreational activities for a certain
neighbourhood, it is administrated by the local municipality. The
community house is a place where every resident of the area can
arrive, take part, rest, celebrate and learn. The building is designed
as to have minimum impact on the surrounding environment. Its
image has been made inviting, facade has tinted glazing, which
associates with a rainbow, also timber construction elements are
used. Roof is environmentally friendly- green roof. For parking
there are underground parking lots built under the shopping
centre and the pedestrian street. Over the parking lot a thick
covering layer is intended, that would be suitable for greenery.
TEHNISKI EKONOMISKIE RĀDĪTĀJI
KOPĒJĀ PLATĪBA - 117136 m2
APBŪVES LAUKUMS - 11212 m2
APBŪVES BLĪVUMS - 9,7 %
PIEBRAUCAMIE CEĻI - 6999 m2
AUTOMAŠĪNU STĀVVIETAS - 580
ESOŠIE GĀJĒJU CEĻI - 23365 m2
PROJ. GĀJĒJU CEĻI - 8843 m2
PROJ. AKTIVITĀŠU LAUKUMI - 8454 m2
PROJ. APSTĀDĪJUMI - 6892 m2
ŪDENS
GAIĻEZERS NEAIZAUGŠANU NODROŠINA CAURTECE
AR LIETUS ŪDENS NOVADĪŠANU UN ESOŠO GAIĻUPĪTI,
KURAS IZTECĒ IERĪKOTS MENIĶIS ŪDENS LĪMEŅA
KONTROLEI.
GAIĻEZERS ATVĒRTS AKTIVITĀTĒM - MAKŠĶERĒŠANA,
IZBRAUKUMIEM AR LAIVU, PELDĒŠANAI UN ZIEMĀ SLIDOŠANAI.
AKTIVITĀTE
GĀJĒJU
CEĻAM
PIESLĒDZAS
DAUDZVEIDĪGAS
AKTĪVĀS
ATPŪTAS ZONAS
EOŠOŠĀS
UN
PROJEKTĒJAMĀS.
NO ESOŠAJĀM SAGLABĀTS PULCĒŠANĀS LAUKUMS
PIE SKOLAS UN STADIONS AR ATVĒRTĀM TRIBĪNĒM.
SPORTA LAUKUMS ATJAUNOTS UN PAPILDINĀTS AR
VINGROŠANAS ELEMENTIEM. TĀPAT REKONSTRUĒTS
LAUKUMS AR ŠOBRĪD NEAKTĪVO ŪDENS BASEINU UN
STRŪKLAKU.
GĀJĒJU IELAI PAREALĒLI VEIDOTS ATRAKTĪVS ŪDENS
CEĻŠ AR ČETRIEM AKTIVITĀŠU PAPLAŠINĀJUMIEM.
PAPILDUS PLĀNOTI ATPŪTAS LAUKUMI AR SOLIŅIEM,
BĒRNU ROTAĻU LAUKUMI - ATSEVIŠĶI BĒRNIEM LĪDZ
12 GADU VECUMAM UN VECĀKIEM. TIE APRĪKOTI AR
VECUMAM ATBILSTOŠIEM ROTAĻU ELEMENTIEM.
ATSEVIŠĶI IERĪKOTS SKEITPARKS AR DAŽĀDIEM
SKEITA ELEMENTIEM. VĒL PAREDZĒTAS GALDA SPĒĻU
ZONAS, KURAS APRĪKOTAS AR PIEMĒROTIEM
GALDIEM UN SOLIŅIEM. TĀPAT ŠĪ ZONA VAR TIK
IZMANTOTA PIKNIKAM.
AKTĪVĀS
ATPŪTAS
LAUKUMI
IZGAISMOTI
AR
PROŽEKTORA TIPA GAISMEKĻIEM.
APSTĀDĪJUMI
AKTIVITĀŠU
LAUKUMI
NOROBEŽOTI
AR
DEKORATĪVIEM ZIEDOŠU KRŪMU STĀDĪJUMIEM,
TĀDĒJĀDI VEIDOJOT VIZUĀLU UN SKAŅAS BARJERU.
KUSTĪBA
3
ĻUPĪTE
ŠMER
5
2,5
6
DR
EIL
IŅ
UP
ĪTE
2
7
4
1977
GAIĻUPĪTE
2
6,5
DR
EIL
IŅ
UP
ĪTE
1
1941
7,5 - 8,5
ZEMES LĪNIJA
4,0
GAIĻUPĪTE
G A IĻ U P ĪT E
MEŽCIEMA CENTRĀLAJĀ ASĪ ESOŠĀ GĀJĒJU ZONA
AKCENTĒTA AR GĀJĒJU CEĻU, KAS SAVIENO
TERITORIJAS DIENVIDU DAĻU AR EZERU. AR
KOREKCIJĀM SAGLABĀTS ESOŠAIS GĀJĒJU IELU
ŠĶĒRSOJOŠAIS CEĻU TĪKLS. TERITORIJU SASAISTE
PAREDZĒTA DIVOS LĪMEŅOS - PĀR GAIĻEZERA IELAI
ORGANIZĒTA GĀJĒJU PĀREJA UN GĀJĒJU TILTS.
GĀJĒJU TILTS VIENLAICĪGI KALPO KĀ SKATA
PLATFORMA.
TERITORIJĀ PIE EZERA PAREDZĒTS GĀJĒJU CEĻU
TĪKLS, KAS VEIDOTS AR UZ PĀĻIEM NOSTIPRINĀTĀM
LAIPĀM, TĀDĒJĀDI IESPĒJAMI MAZ MAINOT DABISKO
VIDI.
GĀJĒJU IELAS CENTRĀLAJĀ ZONĀ PAREDZĒTA
PAZEMES AUTOSTĀVVIETAS (5800 VIETĀM) IZBŪVE,
KURAI ORGANIZĒTAS DIVAS IEBRAUKŠANAS IZBRAUKŠANAS VIETAS - PIE TIDZNIECĪBAS CENTRA
UN SPORTA LAUKUMA. PIEEJA AUTOSTĀVVIETAI
PAREDZĒTA NO CENTRA UN GĀJĒJU IELAS ZONAS.
PIEEJAS NO GĀJĒJU IELAS DIENAKSTS TUMŠAJĀ
LAIKĀ IZGAISMOTAS.
2010
Financial support:
Originator of the content: Agrita Lūse, editor-in-chief of the issue «Ltvijas Būvniecība»
Translation: Elīza Lūse
Graphical design: Artūrs Maurāns
Manager of the project: Gunita Jansone, «Izdevnieciba Lilita LAB», member of the Board
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