Download EXTERIOR CLADDING ASSEMBLIES

Health Innovation Center
Northern Kentucky University
CO Architects Project No.: 14017.000
100% Design Development - September 17, 2015
SECTION 080000
EXTERIOR CLADDING ASSEMBLIES
PART 1 - GENERAL
1.1
A.
SUMMARY
This section includes the following:
1.
Coordinate the Work of all components and elements of the various Exterior Cladding Assemblies
(ECA) including the work of other contractors and subcontractors of any tier to ensure compliance
with the requirements of the Contract Documents.
The Exterior Cladding Assemblies (ECA) are comprised of various ECA types identified as ECA W1
through ECA W8 identified and located on drawing A8.01. The ECA scope includes the entire
vertical building enclosure (not roofs) extending continuously from slab-on-grade up to the
parapet roof termination interface, wrapping the entire building footprint. This includes soffits,
canopies, skylights and screen walls.
a.
ECA Type W1: Metal Panel - Typical: Painted metal panel rainscreen assembly. Open and
overlapped joint rainscreen assembly comprised of Metal Panel 1, a minimum .050
(1.27mm) aluminum panel substrate attached to sub girt assembly for tolerance. Sub girt
is attached by wstructural ‘Z’ furring that is approximately 12” deep and anchored directly to
engineered metal stud through approximately 3” of Dow Corning Thermax insulation.
Interior of side of Thermax/metal stud is covered by a minimum of 1 ½” of spray applied
insulation. Structure is engineered metal stud wall. Minimum of 1” airspace from the back
of the aluminum panels to the face of the insulation. Finish of all rainscreen panels exposed
to exterior shall be a painted organic coating in color to be selected by architect. Sub girt
assembly to match finish of Metal Panel. At transition to glazing systems, continuous
metal flashing to be installed at head, jamb and sill. Flashing to be sealed at all seams,
and stripped into Thermax insulation by peel and stick membrane.
ECA Type W1s: Similar to ECA Type W1 except has the following metal panels. Thermax
insulation to be painted a matte black so that iti is not visible through perforations.
1)
Metal Panel 2 (MP2) – Similar to MP1 except perforated. Perforation pattern TBD.
Metal Panel 3 (MP3) – Similar to MP1 except it is perforated and finished on both sides.
b.
ECA Type W2: Metal Panel - Recessed: Similar to ECA Type 01 except sub girt is
attached directly to Thermax insulation.
ECA Type W3 – Glazing – Curtain Wall Captured Glazing: Thermally broken, high performance,
pressure-equalized, dual-sealed, curtain wall frame system, consisting of standard and
custom extruded aluminum profiles, with steel reinforcement where required to conform to
performance criteria, and custom extruded aluminum sheet rock trim closures to
accommodate interior finishes. System is fully glazed at vision areas with high-performance
four sided captured insulating glass units. Where indicated on Drawings, system
incorporates aluminum-framed doors, Division 8: Door Sections, and all hardware required
for complete assembly. Glass as shown on drawings. Finish of all aluminum exposed to
exterior shall be painted organic coating in two (2) custom colors. Finish of all aluminum
exposed to interior shall be painted in a different, third custom color. System includes dual
continuous perimeter sealant joints, an exterior weatherseal and interior airseal.
ECA Type W4 – Glazing - Curtain Wall Structural Sealant Glazing: Similar to ECA Type W3
except insulate glass units are structurally glazed to aluminum framing members. W4
System includes painted aluminum panel glazed into glazing pocket. Aluminum panel to
be minimum 1/8” thick plate.
EXTERIOR CLADDING ASSEMBLIES
080000 - 1
Health Innovation Center
Northern Kentucky University
CO Architects Project No.: 14017.000
2.
1.2
A.
100% Design Development - September 17, 2015
ECA Type W5 – Glazing Storefront: Similar to ECA Type W4 except depth of system is
shallower. System is typically installed within a larger opening captured at head, sill and
jambs or in a single punched opening application. System includes dual continuous
perimeter sealant joints, an exterior weatherseal and interior airseal.
ECA Type W5s – Glazing Storefront with Screen: Similar to ECA Type W5 except perforated
aluminum rainscreen panel MP1 installed in front system. MP1 installed directly to glazing
or metal stud still TBD.
ECA Type W6 – Architectural Concrete: Architectural concrete to be used only at visible
locations. Cast in place concrete walls with finish type smooth formed finish. As-cast
concrete texture imparted by form-facing material, arranged in an orderly and symmetrical
manner with a minimum of seams. Remove fins and other projections exceeding specified
limits on formed-surface irregularities. Waterproof sides where growing medium or grade is
in contact with concrete wall.
ECA Type W7 – Concrete Wall – Existing: At existing concrete walls, apply a minimum of 2” of
spray applied insulation directly to concrete wall.
ECA Type S1 – Decorative Screen: Metal Panel Type 1 installed directly to AESS steel support
structure.
ECA Type SK – Glazed Skylight: Aluminum framing members at rafter and purlins, supporting
laminated glass insulated units. Glazing is structurally sealed at all four sides. Glass to
be sloped a minimum of 1/4” per foot.
Related Sections include the following:
a.
Division 05 Section “Structural Steel”
Division 05 Section "Cold Formed Metal Framing."
Division 05 Section “Metal Fabrications”
Division 05 Section “Ornamental Metal”
Division 07 Section “Self Adhering Sheet Waterproofing”
Division 07 Section "Building Insulation."
Division 07 Section "Metal Wall Panels."
Division 07 Section "Sheet Metal Flashing and Trim."
Division 07 Section " Firestopping."
Division 07 Section “Fire-Resistive Joint Systems.”
Division 07 Section "Joint Sealants."
Division 08 Sliding Aluminum Framed Glass Doors”
Division 08 Section "Aluminum-Framed Entrances and Storefronts."
Division 08 Section "All-Glass Entrances and Storefronts."
Division 08 Section “Sliding Automatic Entrance Doors”
Division 08 Section “Metal Framed Skylights”
Division 08 Section “Aluminum Windows”
Division 08 Section "Glazing."
Division 08 Section "Glazed Aluminum Curtain Walls.”
Division 10 “Louvers and Vents”
PERFORMANCE REQUIREMENTS
General: The following performance criteria are for the entire envelope as a whole and applies to all
individual Exterior Cladding Assemblies, including but not limited to metal panels and glazed
assemblies including the dual line perimeter sealant joints, interior airseal and exterior weatherseal.
Conditions of Failure:
1.
Water leakage through envelope to the interior finish.
Defects in manufacture, fabrication, installation, or other defects in construction.
Damage of any kind, including fasteners and anchors.
Glass breakage.
Deflection exceeding specified limits.
Thermal stresses transferred to building structure.
EXTERIOR CLADDING ASSEMBLIES
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Health Innovation Center
Northern Kentucky University
CO Architects Project No.: 14017.000
100% Design Development - September 17, 2015
Framing members transferring stresses, including those caused by thermal and structural movements,
to glazing.
Glazing-to-glazing contact.
Noise or vibration created by wind and thermal and structural movements.
Loosening or weakening of fasteners, attachments, and other components.
Sealant failure.
Failure of operating units.
B.
Water Infiltration:
1.
Any water infiltration and/or condensation, which might take place within the ECA, shall be
drained within the ECA and discharged to the exterior face of the ECA.
Water infiltration temporarily contained within the ECA without ill effect, and that does not penetrate to
the interior side of the Work, or damage adjacent materials or surfaces, will not be considered
leakage.
Leakage shall be defined as any uncontrolled water that appears on the interior side of the ECA that is
not contained or drained back to the exterior, or that can cause damage to adjacent materials and
finishes.
Leakage shall not occur when the completed Work is subjected to the following inward pressures acting
normal to the surface, for the specified time periods, using a water spray discharge rate of 5
gallons water per hour per square foot of surface frontal area.
C.
Design criteria for ECA.
1.
Provide an Exterior Cladding System (ECA) such that each ECA Type is structurally-stable,
drains moisture at the weatherseal line back to the exterior, is thermally improved to minimize
thermal bridging, is air-tight, water-tight, and vapor-tight, including all perimeter conditions and
connections to adjacent construction, and accommodates structural and thermal movements, in
accordance with the specified design and performance criteria, referenced standards, applicable
codes and manufacturer's recommendations.
For every transition between one ECA type and another or from one ECA type to structure provide two
continuous lines of sealant, one an interior airseal and the other an exterior weatherseal around
all individual ECA types such that when two individual ECA types meet the dual sealant joints act
in a continuous manner to direct moisture back to the exterior through integral weep tubes.
Fenestration Labelling: ECA types have a permanent label or a label certificate when the component
modelling approach (CMA) is used that lists the following: Certified U factor, SHGC and Visible
Light Transmittance.
D.
Visual Criteria: Provide an ECA such that the various ECA types are consistent in material and
detailed to produce continuity of line, plane, texture and color. Joint and datum lines positioned in
accordance with the architectural bridging documents.
Rain Screen Design Criteria: The following rain screen design criteria applies to the metal wall panel
assembly:
1.
Provide Drained and Back Ventilated Rain Screen Assembly consisting of rain screen cladding,
drainage and ventilation cavity, and internal drainage plane as shown, specified and in
accordance with reference standards.
Provide joints in rainscreen cladding designed to obstruct water penetration by gravity, kinetic energy
and wind force.
Provide drainage and ventilation cavity between rain screen cladding and substrates sized as shown, or
as otherwise necessary, to achieve adequate ventilation of the rainscreen cavity, promote rapid
evaporation of water within the drainage and ventilation cavity, and minimize radiant heat transfer
from cladding to building insulation or membrane. Confirm size of drainage and ventilation cavity,
and ventilation openings through computational modeling.
Maintain continuity of the drainage plane and provide flashing and weeps at bottom of drainage and
ventilation cavity compartments and at openings to direct entered water from the drainage plane
to the outward face of rain screen cladding.
EXTERIOR CLADDING ASSEMBLIES
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Health Innovation Center
Northern Kentucky University
CO Architects Project No.: 14017.000
100% Design Development - September 17, 2015
Provide openings into rain screen cladding to allow ventilation of drainage and ventilation cavity from
top and bottom of compartments formed by intervening flashing, weeps, or other obstructions.
Maintain continuity of drainage and ventilation cavity within compartments to break capillary action and
surface tension of water such that gravity will pull entrained water down and out through weep
holes.
All openings within the drainage plane shall be pressure equalized with a dual air seal, with internal
paths of drainage to the face of the drainage plane.
Glazed openings within rain screen walls shall be sealed to the air barrier.
Each rainscreen assembly ECA must meet NFPA 285 or develop and provide engineering judgment
E.
The Main Structural System can accommodate the following vertical loads occurring at the slab level.
Components and connections back to the main structure are the responsibility of the Contractor:
1.
Glazing and Metal Panel:
a.
Level 1: 160 lb/ft
Level 2: 310 lb/ft
Level 3: 300 lb/ft
Roof 150 lb/ft
F.
The Main Structural System can accommodate a lateral load equal to 15% of the above vertical loads in
any horizontal direction at the slab level.
Final Loads shall be submitted to the Structural Engineer of Record for approval.
The scope of work shall include the design, detailing, supply, and installation of all braces, kickers, and
connection hardware, which is necessary to attach the wall panel system to the supporting structure
and to all other elements of the exterior wall system. The contractor shall have the final responsibility
for coordination with other trades with respect to embed locations, inserts for curtain wall connections,
construction sequencing, and dimensional information.
The contractor is responsible for coordinating and each individual ECA trade is responsible for verifying a
complete load path from the slab connections into the slab diaphragms. Any stiffeners or other special
details required at the panel connections to prevent local overstressing of the structural steel detailed in
the Contract Documents are by the supplier.
The wall system shall comply with any slip locations shown on the Contract Documents. In addition, all
connections so noted should be designed to accommodate the movements specified.
In designing and detailing all connections which are in the scope of work of the ECA trade and the contractor
shall coordinate such detailing to accommodate and avoid conflicts with all structural and nonstructural
elements explicitly shown or otherwise indicated in the project Construction Documents.
The Contractor and each ECA trade shall be responsible for coordination with the window washing system
supplier for magnitude and location of any imposed loading.
The contractor and each individual ECA trade shall coordinate all required electrical, plumbing, and
mechanical openings in panels.
Performance criteria for the overall ECA as well as each individual ECA.
1.
Static pressure of 12 lbf/sq. ft for a period of 15 minutes when tested in accordance with ASTM E
331.
Opaque Wall Cladding and Water Resistive Barriers, Sheet Metal Flashing and Trim and all other
Enclosure Assemblies:
Static pressure of 12 lbf/sq. ft for a period of 15 minutes when tested in accordance with ASTM E 331.
Air Infiltration:
EXTERIOR CLADDING ASSEMBLIES
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Health Innovation Center
Northern Kentucky University
CO Architects Project No.: 14017.000
100% Design Development - September 17, 2015
a.
Fixed Components: Air infiltration, averaged over the frontal area of exterior surfaces
having fixed components, shall not exceed 0.06 CFM per square foot of frontage when
subjected to a minimum static air pressure differential of 6.24 PSF positive pressure when
tested in accordance with ASTM E283.
Operable Components: Air infiltration, averaged over the frontal area of exterior surfaces having
operable components, shall not exceed 0.10 CFM per square foot of crack perimeter when
subjected to a minimum static air pressure differential of 6.24 PSF positive pressure when
tested in accordance with ASTM E238.
Entire Building: Air infiltration, averaged over the frontal area of the entire building, shall not
exceed 0.40 CFM per square foot when subjected to a minimum static air pressure
differential of 1.57 PSF when the entire building is tested, after completion of construction,
in accordance with ASTM E779 or another test method approved by the Commission per
California Energy Code.
G.
The ECA shall be designed to prevent water vapor from exterior or interior air from condensing within
the wall system.
Condensation is defined as water, ice or frost occurring on more than 5 percent of the interior surface of any
one component or water that is not collected and positively drained to the exterior through the
condensation drainage gutter.
Contractor shall be responsible for both hygrothermal analysis and Dew point analysis as well as thermal
performance calculations for each ECA assembly, including ECA structure through exterior finish.
The ECA shall be designed to prevent condensation on the interior under the following conditions:
1.
Condition 1 - Winter:
a.
Outdoor Ambient Air Temperature: 37.2 Dry Bulb.Indoor Ambient Air Temperature (Standard): 70 deg F (+/-2 deg) with 35 percent relative
humidity.
Indoor Ambient Air Temperature (Vivarium): 70 deg F (+/- 2 deg) with 40 percent relative
humidity.
2.
Condition 2 – Summer (Dry / Standard):
a.
Outdoor Ambient Air Temperature: 92 deg F Dry Bulb / 74 deg F Wet Bulb.
Indoor Ambient Air temperature: 72 deg F (+/- 2 deg) with 60 percent relative humidity.
Indoor Ambient Air Temperature (Vivarium): 70 deg F (+/- 2 deg) with 60 percent relative
humidity
3.
Condition 3 – Summer (Humid / Monsoon):
a.
Outdoor Ambient Air Temperature: 95 deg F Dry Bulb / 78 F Wet Bulb.
Indoor Ambient Air temperature: 72 deg F (+/- 2 deg) with 60 percent relative humidity.
Indoor Ambient Air Temperature (Vivarium): 70 deg F (+/- 2 deg) with 60 percent relative
humidity
Resistance to condensation shall be mathematically proven through thermal modeling or testing
in accordance with the specified criteria.
H.
Thermal Performance: The ECA shall provide the minimum overall U-values and Shading Coefficient
required by the Prescriptive Energy Approach.
1.
Effective U Value of vertical glazing including framing: 0.38 btu/h-ft2-F. Spandrel locations to be
0.26 btu/h-ft2-F.
Effective U Value of horizontal glazing including framing: 0.46 btu/h-ft2-F.
Effective U value of ECA opaque wall: 0.058 btu/h-ft2-F.
Effective U value at glazing opaque walls (Glass spandrel) 0.25 btu/h-ft2-F.
I.
Acoustic Performance: ECA shall achieve an average noise level reduction in separate acoustic report.
EXTERIOR CLADDING ASSEMBLIES
080000 - 5
Health Innovation Center
Northern Kentucky University
CO Architects Project No.: 14017.000
100% Design Development - September 17, 2015
Building Movement: ECA shall be capable of accommodating lateral building movement (design story drift)
equal to 2.5% of story height in any horizontal direction. This includes interfaces between different
system types.
Load criteria for ECA: Design to accommodate the loads as indicated in the Structural Drawings.
1.3
A.
1.4
SUBMITTALS
General:
1.
Submit shop drawings, samples and engineering calculations for the Architect's approval before
proceeding with the Work of this Section. Submit according to a schedule that allows for review
and approval.
Each individual ECA submission shall be complete, integrated, and comprehensive, prepared by a
single source, and shall include all shop drawings, samples, material data submissions, and
engineering calculations for the part of the exterior cladding systems addressed. All work shall
be coordinated by the Contractor prior to submission.
Submittal of all reactions and loads for review and approval by the Structural Engineer of Record,
where components of the ECA induce loads to the building structure.
Field measurements of adjacent and/or supporting construction and verification of existing conditions
where feasible.
Shop drawings, engineering data and structural calculations shall be stamped by a qualified structural
engineer licensed in the State of Kentucky
QUALITY ASSURANCE
A.
General:
1.
All Work shall comply with the Kentucky Building Code, 2013 (Based upon 2012 International
Building Code, Including 2012 International Energy Conservation Code. ASCE 7-10 Minimum
Design Loads for Buildings and Other Structures, and all other regulations as shown on the
Drawings and as described in the Specifications, as well as all local, state, and county
regulations, and all amendments of the Codes at the date of this Specification.
All standards and codes referenced in this Specification shall be those editions including amendments
current at the date of this Specification.
Confirm to all applicable criteria specified herein with the authority having jurisdiction prior to
proceeding with the Work and promptly notify the Architect of any differences in writing prior to
proceeding.
In case of any conflict between referenced codes and standards and/or the Drawings and
Specifications, the code or standard having the more stringent requirements shall govern.
B.
Mockup and drawings, test procedures, testing and verification of design, components, and total
assembly. Mock-up type and extent still to be determined.
The Work of this Section shall be the responsibility of one contractor, unless otherwise approved by the
Architect.
1.
The term Contractor is used as if singular in number and refers to the building contractor,
individual ECA contractor and all sub-contractors, fabricators, manufacturers, and suppliers at
any tier.
C.
The Contractor and the Subcontractor(s) of the Work of this Section shall have proven achievement
and experience in design, coordination and installation of custom-designed, unitized and field-built,
conventionally and structural silicone glazed curtain walls, structural glass wall systems, multi-system
exterior cladding assemblies and masonry rain screen assemblies.
EXTERIOR CLADDING ASSEMBLIES
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Health Innovation Center
Northern Kentucky University
CO Architects Project No.: 14017.000
1.5
A.
100% Design Development - September 17, 2015
WARRANTY
Special warranties:
1.
In addition to warranties specified in the individual sections, the general warranty period for the
entire ECA including all ECA Types shall be five (5) years after the date stipulated in the
Certificate of Substantial Completion
PART 2 - PRODUCT – NOT USED
PART 3 - EXECUTION
3.1
EXTERIOR WALL MOCKUP: TBD
3.2
BENCHMARK INSTALLATIONS
A.
Provide in place out of sequence first install complete installations of each ECA Type for quality control
review. Installations will become part of final installation.
EXTERIOR CLADDING ASSEMBLIES
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