HomeMy WebLinkAboutFile Documents.124 W Hallam St.0025.2017 (36).ARBKMILLER RESIDENCE 086300 - 1 METAL-FRAMED SKYLIGHTS
01/27/2012
SECTION 086300 - METAL-FRAMED SKYLIGHTS
PART 1 - GENERAL
1.1 SUMMARY
A. Structural flush glazed, single slope, single lite, fixed, curb mount, skylights with metal
framing and integral condensate guttering.
1.2 ACTION SUBMITTALS
A. Product Data: For each type of product indicated.
B. Shop Drawings: For metal-framed skylights. Include plans, elevations, sections,
details, and attachments to other work.
C. Samples: For each type of exposed finish.
1.3 INFORMATIONAL SUBMITTALS
A. Product test reports.
1.4 QUALITY ASSURANCE
A. Installer Qualifications: Manufacturer's authorized representative who is trained and
approved for installation of metal-framed skylights with 10 years experience required
for this Project.
B. Structural-Sealant Glazing: Comply with recommendations in ASTM C 1401, "Guide
for Structural Sealant Glazing," for joint design and quality-control procedures.
C. Preinstallation Conference: Conduct conference at Project site.
1.5 WARRANTY
A. Special Warranty: Manufacturer's standard form in which manufacturer agrees to
repair or replace components of metal-framed skylights that fail in materials or
workmanship within specified warranty period.
1. Warranty Period: 10 years from date of Substantial Completion.
B. Special Finish Warranty: Manufacturer's standard form in which manufacturer agrees
to repair or replace components on which finishes fail within specified warranty period.
Warranty does not include normal weathering.
MILLER RESIDENCE 086300 - 2 METAL-FRAMED SKYLIGHTS
01/27/2012
1. Warranty Period: 10 years from date of Substantial Completion.
PART 2 - PRODUCTS
2.1 MANUFACTURERS
A. Basis-of-Design Product: Subject to compliance with requirements, provide skylight
manufactured by Industrial Skylight, Inc. 133 Newport Drive, Suite C San Marcos, CA
92069 (760) 434-6001 Office (760) 454-4616 Fax info@industrialskylights.com
2.2 PERFORMANCE REQUIREMENTS
A. General: Metal-framed skylights shall withstand the effects of the following without
failure due to defective manufacture, fabrication, installation, or other defects in
construction:
1. Structural loads.
2. Thermal movements.
3. Movements of supporting structure.
4. Dimensional tolerances of support system and other adjacent construction.
5. Failure includes, but is not limited to, the following:
a. Deflection exceeding specified limits.
b. Thermal stresses transferring to building structure.
c. Framing members transferring stresses, including those caused by thermal
and structural movements to glazing.
d. Glazing-to-glazing contact.
e. Noise or vibration created by wind and by thermal and structural
movements.
f. Loosening or weakening of fasteners, attachments, and other components.
g. Sealant failure.
B. Delegated Design: Design metal-framed skylights, including comprehensive
engineering analysis by a qualified professional engineer, using performance
requirements and design criteria indicated.
C. Structural Loads:
1. Wind Loads: As indicated on Drawings.
D. Deflection of Framing Members: At design wind pressure, as follows:
1. Deflection Normal to Glazing Plane: Limited to 1/175 of clear span for spans up
to 13 feet 6 inches and to 1/240 of clear span plus 1/4 inch for spans more than
13 feet 6 inches or an amount that restricts edge deflection of individual glazing
lites to 3/4 inch, whichever is less.
2. Deflection Parallel to Glazing Plane: Limited to amount not exceeding that which
reduces glazing bite to less than 75 percent of design dimension and that which
MILLER RESIDENCE 086300 - 3 METAL-FRAMED SKYLIGHTS
01/27/2012
reduces edge clearance between framing members and glazing or other fixed
components to less than 1/8 inch.
E. Lateral Bracing of Framing Members: Compression flanges of flexural members are
laterally braced by cross members with minimum depth equal to 50 percent of flexural
member that is braced. Glazing does not provide lateral support.
F. Structural-Test Performance: Provide metal-framed skylights tested according to
ASTM E 330, as follows:
1. When tested at positive and negative wind-load design pressures, assemblies do
not evidence deflection exceeding specified limits.
2. When tested at 150 percent of positive and negative wind-load design pressures,
assemblies, including anchorage, do not evidence material failures, structural
distress, and permanent deformation of main framing members exceeding 0.2
percent of span.
3. Test Durations: As required by design wind velocity, but not less than 10
seconds.
G. Air Infiltration: Provide metal-framed skylights with maximum air leakage through fixed
glazing and framing areas of 0.06 cfm/sq. ft. of fixed wall area when tested according
to ASTM E 283 at a minimum static-air-pressure difference of 6.24 lbf/sq. ft.
H. Water Penetration under Static Pressure: Provide metal-framed skylights that do not
evidence water penetration through fixed glazing and framing areas when tested
according to ASTM E 331 at a minimum static-air-pressure difference of 20 percent of
positive wind-load design pressure, but not less than 6.24 lbf/sq. ft.
I. Thermal Movements: Provide metal-framed skylights that allow for thermal
movements resulting from the following maximum change (range) in ambient and
surface temperatures. Base engineering calculations on surface temperatures of
materials due to both solar heat gain and nighttime-sky heat loss.
1. Temperature Change (Range): 120 deg F, ambient; 180 deg F, material
surfaces.
J. Condensation Resistance: Provide metal-framed skylights with fixed and operable
glazing and framing areas having maximum possible condensation-resistance factor as
manufactured by the manufacturer when tested according to AAMA 1503.
K. Structural Sealant: Capable of withstanding tensile and shear stresses imposed
without failing adhesively or cohesively. When tested for preconstruction adhesion and
compatibility, cohesive failure of sealant shall occur before adhesive failure.
L. Energy Performance: Provide metal-framed skylights with performance properties
specified, as indicated in manufacturer's published test data, based on procedures
indicated below:
1. Thermal Transmittance (U-Factor): Fixed glazing and framing areas shall have
U-factor of not more than 0.65 Btu/sq. ft. x h x deg F as determined according to
NFRC 100.
MILLER RESIDENCE 086300 - 4 METAL-FRAMED SKYLIGHTS
01/27/2012
2. Solar Heat Gain Coefficient: Fixed glazing and framing areas shall have a solar
heat gain coefficient of no greater than 0.6 as determined according to
NFRC 200.
2.3 FRAMING SYSTEMS
A. Aluminum: Alloy and temper recommended in writing by manufacturer for type of use
and finish indicated.
1. Sheet and Plate: ASTM B 209.
2. Extruded Bars, Rods, Profiles, and Tubes: ASTM B 221.
3. Extruded Structural Pipe and Tubes: ASTM B 429/B 429M.
4. Structural Profiles: ASTM B 308/B 308M.
B. Brackets and Reinforcements: Manufacturer's standard high-strength aluminum with
nonstaining, nonferrous shims for aligning skylight components.
C. Fasteners and Accessories: Manufacturer's standard, corrosion-resistant, nonstaining,
nonbleeding fasteners and accessories compatible with adjacent materials.
1. Use self-locking devices where fasteners are subject to loosening or turning out
from thermal and structural movements, wind loads, or vibration.
2. Reinforce members as required to receive fastener threads.
3. Use exposed fasteners with countersunk Phillips screw heads.
D. Anchor Bolts: ASTM A 307, Grade A, galvanized steel.
E. Concealed Flashing: Manufacturer's standard, corrosion-resistant, nonstaining,
nonbleeding flashing compatible with adjacent materials.
F. Perimeter Curt: Low profile, insulated curb.
G. Electrically Motorized Skylight: Electrically operable sections of ridge skylights with
capability to be remotely operated and must have a Flushed out detail with other lites .
1. Provide motor contact points for interface with automation system “Home
Automation System”.
2. Provide insulated curb sections that integrate conduit and junction boxes for
electrical line voltage and low voltage control wiring to motor operators.
H. Exposed Flashing and Closures: Manufacturer's standard aluminum components not
less than 0.040 inch thick.
1. Flashings and closures shall be designed as thermally broken or enhanced so
thermal bridging is minimized.
I. Framing Gaskets: 100% Neutral Cure Silicone.
J. Framing Sealants: Dow 795 Silicone.
MILLER RESIDENCE 086300 - 5 METAL-FRAMED SKYLIGHTS
01/27/2012
1. Sealants used inside the weatherproofing system shall have a VOC content of
250 g/L or less when calculated according to 40 CFR 59, Subpart D (EPA
Method 24).
K. Corrosion-Resistant Coating: Cold-applied asphalt mastic.
2.4 GLAZING
A. Glazing: Insulating, overhead safety glazing assembly.
1. Heat Treated Glass: ASTM C1048.
2. Laminated Glass: Two lites interleaved with polyvinyl butyral (PVB). Units must
meet criteria of ANSI Z97.1- 1984 and CPSC 16 CFR 1201 for safety glazing.
Provide PVB layer of 0.030-in. for all glass units.
3. Insulating Glass: CBA rated by the Insulating Glass Certification Council (IGCC)
when tested in accordance with ASTM E773 and ASTM E774. Dual edge seals
with the secondary seal being silicone. Exterior lite of fully tempered glass and
interior lite of laminated glass.
B. Spacers, Setting Blocks, and Gaskets: Manufacturer's standard elastomeric types.
C. Bond-Breaker Tape: Manufacturer's standard.
D. Glazing Sealants: As recommended in writing by manufacturer.
1. Sealants used inside the weatherproofing system shall have a VOC content as
indicated when calculated according to 40 CFR 59, Subpart D (EPA Method 24).
2. Structural Sealant: ASTM C 1184, neutral-curing silicone formulation compatible
with system components with which it comes in contact, specifically formulated
and tested for use as structural sealant, and approved by structural-sealant
manufacturer for use in metal-framed skylights indicated.
a. VOC Content: 100 g/L or less.
b. Color: Black.
3. Weatherseal Sealant: ASTM C 920 for Type S, Grade NS, Class 25, Uses NT,
G, A, and O; neutral-curing silicone formulation compatible with structural sealant
and other components with which it comes in contact; and recommended in
writing by structural- and weatherseal-sealant and metal-framed skylight
manufacturers for this use.
a. Color: Matching structural sealant.
2.5 FABRICATION
A. Fabricate aluminum components before finishing.
B. Fabricate aluminum components that, when assembled, have the following
characteristics:
MILLER RESIDENCE 086300 - 6 METAL-FRAMED SKYLIGHTS
01/27/2012
1. Profiles that are sharp, straight, and free of defects or deformations.
2. Accurately fitted joints with ends coped or mitered.
3. Internal guttering systems or other means to drain water passing joints,
condensation occurring within framing members, and moisture migrating within
skylight to exterior.
4. Physical and thermal isolation of glazing from framing members.
5. Accommodations for thermal and mechanical movements of glazing and framing
to maintain required glazing edge clearances.
C. Fabricate aluminum sill closures with weep holes and dust/insect sponges for
installation as continuous component.
D. Fabricate insulated curb at motorized skylight sections with conduit and junction boxes
as necessary for line and low voltage to motor.
E. Reinforce aluminum components as required to receive fastener threads.
F. Factory-Glazed, Metal-Framed Skylights:
1. Factory install glazing.
2. Prepare surfaces that will contact structural sealant according to structural-
sealant manufacturer's written instructions to ensure compatibility and adhesion.
Preparation includes, but is not limited to, cleaning and priming surfaces.
G. Fabricate skylights with no carbon steel components. If carbon steel is required to
meet performance requirements, such steel shall be either hot dipped galvanized,
separated with Stainless Steel sleeve, or painted with a high performance paint
system.
1. High performance paint system shall include a zinc rich epoxy primer and an
epoxy topcoat.
2. Galvanized coating shall be G90.
H. After fabrication, clearly mark components to identify their locations in Project
according to Shop Drawings.
2.6 ALUMINUM FINISHES
A. High-Performance Organic Finish: Two-coat fluoropolymer finish complying with
AAMA 2605 and containing not less than 70 percent PVDF resin by weight in color
coat.
1. Color and Gloss: Match Architect's sample.
2.7 SOURCE QUALITY CONTROL
A. Structural-Sealant Glazing: Perform quality-control procedures complying with
ASTM C 1401 recommendations including, but not limited to, material qualification
procedures, sealant testing, and fabrication reviews and checks.
MILLER RESIDENCE 086300 - 7 METAL-FRAMED SKYLIGHTS
01/27/2012
PART 3 - EXECUTION
3.1 INSTALLATION
A. General:
1. Comply with manufacturer's written instructions.
2. Do not install damaged components.
3. Fit joints between aluminum components to produce hairline joints free of burrs
and distortion.
4. Rigidly secure nonmovement joints.
5. Install anchors with separators and isolators to prevent metal corrosion and
electrolytic deterioration and to prevent impeding movement of moving joints.
6. Seal joints watertight unless otherwise indicated.
B. Metal Protection: Where aluminum will contact dissimilar materials, protect against
galvanic action by painting contact surfaces with protective coating or by installing
nonconductive spacers as recommended in writing by manufacturer for this purpose.
C. Install continuous aluminum sill closure with weatherproof expansion joints and locked
and sealed corners. Locate weep holes at rafters.
D. Install components to drain water passing joints, condensation occurring within framing
members, and moisture migrating within skylight to exterior.
E. Install components plumb and true in alignment with established lines and elevations.
F. Install glazing per manufacturer’s requirements.
1. Structural-Sealant Glazing:
a. Prepare surfaces that will contact structural sealant according to structural-
sealant manufacturer's written instructions to ensure compatibility and
adhesion. Preparation includes, but is not limited to, cleaning and priming
surfaces.
b. Install weatherseal sealant according to Division 07 Section "Joint
Sealants" and according to weatherseal-sealant manufacturer's written
instructions to produce weatherproof joints. Install joint filler behind
weatherseal sealant as recommended in writing by weatherseal-sealant
manufacturer.
G. Erection Tolerances: Install metal-framed skylights to comply with the following
maximum tolerances:
1. Alignment: Limit offset from true alignment to 1/32 inch where surfaces abut in
line, edge to edge, at corners, or where a reveal or protruding element separates
aligned surfaces by less than 3 inches; otherwise, limit offset to 1/8 inch.
2. Location and Plane: Limit variation from true location and plane to 1/8 inch in 12
feet but no greater than 1/2 inch over total length.
MILLER RESIDENCE 086300 - 8 METAL-FRAMED SKYLIGHTS
01/27/2012
3.2 FIELD QUALITY CONTROL
A. Testing Agency: Owner may engage a qualified testing agency to perform tests and
inspections.
1. Water-Spray Test: Before installation of interior finishes has begun, skylights
shall be tested according to AAMA 501.2 and shall not evidence water
penetration.
B. Manufacturer Inspection: Manufacturer’s Technical Representative shall be present
for start up and testing of motorized sections of skylight to assure skylight is in proper
working order.
C. Repair or remove work where test results and inspections indicate that it does not
comply with specified requirements.
D. Additional testing and inspecting, at Contractor's expense, will be performed to
determine compliance of replaced or additional work with specified requirements.
E. Prepare test and inspection reports.
3.3 PROTECTION AND CLEANING
A. General Contractor to protect skylight from ongoing work by other trades.
B. Clean glass and frame at time of installation and at completion of building.
END OF SECTION