Download 08 6323 Metal-Framed Skylights and Sloped Glazing

SECTION 08 6323
METAL-FRAMED SKYLIGHTS AND SLOPED GLAZING
EDIT NOTE: COORDINATE LOCATION AND INSTALLATION OF SAFETY
RAILING SYSTEMS REQUIRED AROUND SKYLIGHT AND SLOPED GLAZED
OPENINGS AS REQUIRED BY PROJECT REQUIREMENTS.
PART 1 - GENERAL
1.01
SUMMARY
A.
B.
1.02
Section Includes:
1.
Metal-Framed Skylights and Sloped Glazing.
2.
Glass and glazing for skylights and sloped glazing.
3.
Flashings and gutter liners.
4.
Sloped Glazing.
Related Requirements:
1.
Division 01 - General Requirement.
2.
Section 06 1000 - Rough Carpentry.
3.
Section 07 6000 - Flashing and Sheet Metal.
4.
Section 07 9200 - Joint Sealants.
SECTION DEFINITIONS
A.
1.03
Water leakage is defined as any uncontrolled water that appears on any exposed
interior surface that is not drained back to the exterior.
DESIGN REQUIREMENTS
A.
Drawings indicate sizes, locations, profiles, and general details of skylight
construction and installation.
B.
The total deflection of rafters less than 20 feet in length shall not exceed 1/75 of that
length or one inch, whichever is smaller, at design loading. Rafters 20 feet or greater
shall not exceed 1/240.
C.
The deflection of a framing member in a direction parallel to the plane of the glass,
when carrying its full load, shall not reduce the glass or panel bite below 75 percent of
the design dimension.
PROJECT NAME
SCHOOL NAME
10/01/2011
METAL-FRAMED SKYLIGHTS AND SLOPED GLAZING
08 6323-1
D.
Framing members and the edge of glazing products shall have a 1/8 inch minimum
clearance at maximum deflection.
E.
Deflections shall not impair the function of or damage joint seals or glazing.
F.
Vault rafter segments shall be moment connections. The skylight shall impose no
lateral loads on the supporting structure other than wind and seismic loads.
G.
Glass Performance Requirements:
1.04
Probability of breakage shall not exceed 1/1000 for sloped glass upon
imposition of design wind and live loads for one minute.
2.
Probability of breakage due to anticipated thermal stress not to exceed 1/1000.
3.
Comply with CBC requirements.
SUBMITTALS
A.
Shop Drawings: Submit plans, elevations, details and calculations.
B.
Material Samples:
C.
1.05
1.
1.
Submit finish Samples for aluminum materials and flashings.
2.
Submit glass Samples, minimum 6-inch by 6-inch.
Certificates:
1.
Submit notarized statement certifying that the stress on the silicone sealant,
when exposed to the specified wind load does not exceed 20 psi for a 6-to-1
safety factor.
2.
Submit compatibility statement that the materials in contact with the sealant,
such as gaskets, spacers, and setting blocks, are compatible with the sealant
after 21 days exposure to ultra-violet, 200-4000 micro watt ultraviolet
radiation.
D.
Calculations: Submit structural calculations prepared, signed, and sealed by a
structural engineer licensed in the State of California.
E.
Test Reports:
1.
The skylight manufacturer shall submit for review at least three test reports by
a nationally recognized testing facility indicating that similar skylight products
by the manufacturer have been tested according to the referenced standards and
that the skylight passed those tests.
2.
Test data on adhesion to production samples of metal and glass, tested in
accordance with ASTM C794.
QUALITY ASSURANCE
PROJECT NAME
SCHOOL NAME
10/01/2011
METAL-FRAMED SKYLIGHTS AND SLOPED GLAZING
08 6323-2
A.
Comply with the following as a minimum requirement:
1.
AAMA 501.1 - Standard Test Method for Metal Curtain Walls for Water
Penetration Using Dynamic Pressure.
2.
AAMA 501.2 - Field Check of Metal Curtain Walls for Leakage.
3.
AAMA 501.3 - Field Check of Water Penetration Through Installed Exterior
Windows, Curtain Walls, and Doors by Uniform Air Pressure Difference.
4.
AAMA 603.8 - Performance Requirements and Test Procedures for Pigmented
Organic Coatings on Extruded Aluminum.
5.
AAMA 2605 - Specification for High Performance Organic Coatings on
Architectural Extrusions and Panels.
6.
AAMA 606.1 - Voluntary Guide Specification and Inspection Methods for
Clear Anodic Finishes for Architectural Aluminum.
7.
ANSI Z97.1 - Safety Glazing Materials Used in Buildings - Safety
Performance Specifications and Methods of Test.
8.
ASTM A193 - Alloy Steel and Stainless Steel Bolting Materials for High
Temperature Service.
9.
ASTM A307 - Carbon Steel Bolts and Studs, 60,000 psi Tensile Strength.
10.
ASTM B209 - Aluminum and Aluminum-Alloy Sheet and Plate.
11.
ASTM B211 - Aluminum and Aluminum-Alloy Bar, Rod and Wire.
12.
ASTM B221 - Aluminum-Alloy Extruded Bars, Rods, Wires, Profiles and
Tubes.
13.
ASTM B316 - Specification for Aluminum and Aluminum-Alloy Rivet and
Cold-Heating Wire and Rods.
14.
ASTM C719 - Adhesion and Cohesion of Elastomeric Joint Sealants under
Cyclic Movement (Hockman Cycle).
15.
ASTM C794 - Adhesion-in-Peel of Elastomeric Joint Sealants.
16.
ASTM C1036 - Flat Glass.
17.
ASTM C1048 - Heat-Treated Flat Glass - Kind HS, Kind FT Coated and
Uncoated Glass.
18.
ASTM D395 - Rubber Property - Compression Set.
19.
ASTM D412 - Vulcanized Rubber and Thermoplastic Rubbers and
Thermoplastic Elastomers - Tension.
PROJECT NAME
SCHOOL NAME
10/01/2011
METAL-FRAMED SKYLIGHTS AND SLOPED GLAZING
08 6323-3
B.
1.06
20.
ASTM D1171 - Rubber Deterioration - Surface Ozone Cracking Outdoors or
Chamber (Triangular Specimens).
21.
ASTM D2240 - Rubber Property - Durometer Hardness.
22.
ASTM E283 - Determining the Rate of Air Leakage Through Exterior
Windows, Curtain Walls, and Doors Under Specified Pressure Differences
Across the Specimen.
23.
ASTM E330 - Structural Performance of Exterior Windows, Curtain Walls,
and Doors by Uniform Static Air Pressure Difference.
24.
ASTM E331 - Water Penetration of Exterior Windows, Curtain Walls, and
Doors by Uniform Static Air Pressure Difference.
25.
ASTM E2190 - Standard Specification for Insulating Glass Unit Performance
and Evaluation.
26.
ASTM E783 - Field Measurement of Air Leakage Through Installed Exterior
Windows and Doors.
27.
GANA - Glazing Manual.
28.
US CPSC Standard 16 CFR 1202 - Architectural Glazing Standards and
Related Material.
Qualifications of Installer: Minimum 10 years experience installing work of similar
scope and complexity.
WARRANTY
A.
Manufacturer shall provide a ten year material warranty.
B.
Installer shall provide a five year fabrication and installation warranty.
PART 2 - PRODUCTS
2.01
MANUFACTURER
A.
2.02
Provide products and systems manufactured by Super Sky Products, or equal.
MATERIALS
A.
Framework:
1.
Supporting members shall be of extruded aluminum alloy 6063-T5 or 6061-T6
complying with ASTM B221.
2.
Exterior caps shall be of extruded aluminum alloy 6063-T5 complying with
ASTM B221.
PROJECT NAME
SCHOOL NAME
10/01/2011
METAL-FRAMED SKYLIGHTS AND SLOPED GLAZING
08 6323-4
3.
B.
Glazing Strips:
1.
C.
D.
Principal formed metal members shall be of aluminum alloy 5052 or 6061-T6
complying with ASTM B209.
Extruded glazing strips shall be Type 1, heat cured silicone rubber designed to
prevent adhesion, and complying with the following:
a.
Hardness: ASTM D2240 Type A 50 +5 Durometer.
b.
Tensile Strength: ASTM D412 800 psi minimum.
c.
Elongation: 300 percent minimum.
d.
Tear, die B, psi: 65 minimum.
e.
Color: As selected by the Architect.
2.
Compression Set:
maximum.
ASTM D395, 70 hours at 212 degrees F.: 20 percent
3.
Heat Aging Characteristics:
a.
Seventy hours at 212 degrees F.
b.
ASTM D2240 hardness change: +3 Durometer.
c.
ASTM D412 tensile change: -10 percent.
d.
ASTM D412 elongation change: -20 percent.
4.
ASTM D1171 weather-resistance, one part ozone per million, 500 hours at 20
percent elongation to show no cracks.
5.
This material shall have no visual checks, cracks or breaks after completion of
tests.
Setting Blocks: Extruded setting blocks shall be Type II silicone rubber designed to
permit adhesion and complying with the following:
1.
Hardness: ASTM D2240 Type A 80 + 5 Durometer.
2.
Color: Black.
Fasteners:
1.
Exterior cap retainers: ASTM A193 B8 300 series stainless steel.
2.
Framework connections: ASTM B211 2024-T4 aluminum, ASTM A193 B8
300 stainless steel, and ASTM B316 aluminum rivets as required.
3.
Anchoring to support structure: ASTM A 307 zinc-plated steel fasteners.
PROJECT NAME
SCHOOL NAME
10/01/2011
METAL-FRAMED SKYLIGHTS AND SLOPED GLAZING
08 6323-5
E.
Flashing: Flashing shall be preformed 20 gage 5005-H4 aluminum, finished to match
the skylight rafter caps.
F.
Finishes: Coat aluminum components with a PVDF coating system, conforming to
AAMA 2605. Color as selected by Architect, from manufacturer's standard colors.
G.
Sealants:
1.
Structural joints and non-structural seals shall be high performance silicone
sealants installed in accordance with the manufacturer's written
recommendations.
2.
Structural Sealant Performance Requirements:
3.
2.03
a.
Hardness: ASTM D2240 Type A, 30 Durometer.
b.
Ultimate tensile strength: ASTM D412, 170 psi.
c.
Tensile strength at 150 percent elongation: ASTM D412; minimum 80
psi.
d.
Joint movement capability after 14 day cure: ASTM C719, +50 percent.
e.
Peel strength (aluminum, glass concrete) after 21 day cure: ASTM
C794, 32 pounds per inch.
Structural silicone shall not support dead weight of vertical glass or panel.
SHOP FABRICATION
A.
Fitting and assembly shall be performed in the manufacturer’s facilities. Work, which
cannot be assembled in the manufacturer’s facilities as a complete system, shall be
completely assembled, marked, and disassembled before shipment to the Project site.
PART 3 - EXECUTION
3.01
FABRICATION
A.
The skylights shall be fabricated with extruded aluminum members of alloys as
specified.
B.
Rafter bars shall be of one piece construction.
C.
Rafter bars shall be designed for snap-in type glazing strips.
D.
Clips for the attachment of rafter bars shall be aluminum and shall be shop riveted,
bolted, or welded to rafter bars.
E.
Welding shall be performed by the heliarc process. Exposed welds shall be ground
flush and smooth.
PROJECT NAME
SCHOOL NAME
10/01/2011
METAL-FRAMED SKYLIGHTS AND SLOPED GLAZING
08 6323-6
F.
Waterproofing shall be furnished by means of continuous exterior silicon sealant
beads. Seal horizontal flush joints with a continuous silicone sealant bead.
G.
Silicone setting blocks shall be furnished for support of glass and shall be sized and
installed in accordance with glass manufacturers written recommendations.
H.
Skylights shall be furnished with weep holes located at lower portion of extruded
aluminum curb bar at each rafter connection for drainage of condensation to exterior.
I.
Field cutting or trimming of rafter bars, caps, or glass light is not permitted.
J.
Pressure bars shall be furnished for snap-in type glazing strips and shall have snap-on
covers, so no exterior fastener is exposed.
K.
Pressure bars shall be fastened with stainless steel fasteners into a system of alternate
serrations. Fasteners shall be furnished so glazing strips are compressed to a
predetermined amount of uniform compression. Fasteners shall be installed at 12
inches on center maximum.
L.
Glass shall be installed with exterior silicone glazing strips.
M.
Waterproofing shall be provided by means of continuous exterior silicon sealant
beads. Horizontal flush joints require a continuous silicone sealant bead.
3.02
EXAMINATION
A.
3.03
PREPARATION
A.
Surfaces to be sealed shall be completely cleaned and dry. Verify and follow sealant
manufacturer's written recommendations for proper cleaning, priming, and installation
procedures.
B.
Temperatures of the glass and aluminum surfaces shall be above 40 degrees F, during
glazing and curing. Temperature range shall not vary more than 10 degrees F during
sealant installation and curing.
C.
Install components and glazing under direct observation of the skylight manufacturer's
technical representative.
3.04
ISOLATION OF INCOMPATIBLE MATERIALS
A.
3.05
Examine the Work to determine that structure and substrate to receive system are
properly prepared and ready to receive the Work of this section. Do not proceed until
unsatisfactory conditions are corrected.
Incompatible materials, such as aluminum and steel, shall be isolated from each other.
Aluminum shall be furnished with one coat of zinc chromate, one coat bituminous
paint, and further protected where required with isolation tape to prevent contact with
incompatible materials and metal.
FIELD QUALITY CONTROL
PROJECT NAME
SCHOOL NAME
10/01/2011
METAL-FRAMED SKYLIGHTS AND SLOPED GLAZING
08 6323-7
A.
3.06
Water flood test completed skylights in accordance with AAMA 501.1, 501.2 and
501.3.
CLEAN UP
A.
3.07
Remove rubbish, debris and waste materials and legally dispose of off the Project site.
PROTECTION
A.
Protect the Work of this section until Substantial Completion.
END OF SECTION
PROJECT NAME
SCHOOL NAME
10/01/2011
METAL-FRAMED SKYLIGHTS AND SLOPED GLAZING
08 6323-8