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Section
08625
Metal Framed Skylights
PART 1 GENERAL
1.01 WORK INCLUDED
A. Product engineering and
fabrication techniques, shop drawings, structural calculations
and Professional Engineering approval stamps for large missile
impact tested skylight designed for a curb mounted application.
B. Fabrication and installation
of aluminum and glass skylight system.
C. Finish of skylight assembly
and accompanied flashing metals.
D. Gaskets and sealants.
E. Skylight glass and glazing.
F. Skylight flashing.
1.02 RELATED WORK
A. Section 05120 Structural
Steel
B. Section 07510 Roofing
C. Section 07600 Flashing and
Sheet Metal
D. Section 07900 Joint Sealers
E. Section 08800 Glass and
Glazing
1.03 REFERENCES
A. ASCE 7-96
B. ANSI A58.1, Z97.1-1984
C. ASTM E 330, ASTM E 331, ASTM
E 283
D. SBCCI Test Standard for
determining impact resistance from windborne debris. SSTD 12-97
E. Metropolitan Dade County
Protocol PA 201, PA 202, PA 203
F American Architectural
Manufacturers Association (AAMA) 501, 603.8, 605.2, 607.1
G. Flat Glass Marketing
Association (FGMA) Glazing Manual
1.04 QUALITY ASSURANCE
A. Provide a skylight and
application that is structurally sound, impact resistant and
weather tight conforming to applicable testing and performance
requirements described herein.
B. Except as otherwise
indicated, requirements for aluminum skylights , terminology,
tolerances,
standards of performance and
workmanship are those specified in ANSI/AAMA.
C. Provide certified
independent laboratory test reports from an accredited
laboratory.
D. Provide certification for
compliance and approval.
1.05 TESTING AND PERFORMANCE
REQUIREMENTS
A Test Units All tests, unless
otherwise noted, shall comfort to the impact, static, cyclic,
air and water tests as set forth by the SBCCI and the
Metropolitan Dade County Building Code Compliance Off.
B. Test Procedure and
Performance.
1. Skylights shall conform to
criteria for conducting impact, static, cyclic air and water
tests set forth by the SBCCI and the Metropolitan Dade County
Building Code Compliance Office.
2. Impact Test - PA 201-94 and
302.1-302.3.2
a. Missile impact skylight with
a solid S4S nominal 2 x 4, #2 surface dry, Southern Pine Of not
less than 8'-6'. in length and 9 lbs in weight at a velocity
between 50 and 52 ft/sec. without defined specimen failure.
3. Cyclic Wind Pressure Loading
Test - PA203 -94 and 302.4.-302.7.3.
a. Apply loads to the specimen
using the cycles specified in The South Florida Building Code
and as in Table 1 of SSTD 12-97 without failure.
b. Specified Design Pressure
(DP) should not be less than 75 psf.
4. Uniform Static Pressure Test
- PA 202 - 94
a. Conduct air leakage test at
1.57 psf and 6.24 psf in accordance with ASTM E-283. Air
infiltration should not exceed .06 cfm.
b. Conduct water leakage test
in accordance with ASTM E 331 without evidence of any
uncontrolled water. Minimum water test pressure should not be
less than 10 psf.
c. Conduct static load test in
accordance with ASTM E 330. Deflection should not exceed L /180
when subject to a uniform load.
1.06 SUBMITTALS
A. Shop Drawings
1. Submit scaled shop drawings
including all conditions of construction, location diagrams
including identification of and spacing of anchorage, framing
members, joinery, glazing materials and sealant details.
B. Structural Calculations.
1. Provide structural
calculations by a licensed structural engineer demonstrating
structural compatibility with project requirements.
C. Test Reports
1. Provide certified
independent laboratory test reports verifying compliance with
requirements in Section 1.05.
D. Samples
1. Submit ( ) 6" lengths
of aluminum extrusions.
2. Submit ( ) color samples of
finish to be used.
3. Submit ( ) 12" x
12" glass samples to be used.
E. Warranties
1. Provide manufacturer’s
warranty in accordance with the contract documents.
2. Provide glass warranty as
furnished by the supplier.
3. Provide installation
warranty in accordance with the contract documents.
1.08 WARRANTY
A. Stating that skylight
materials for above project will be free from defects and
workmanship for a period of five (5) years from date of
substantial completion.
B. Stating that glass shall be
free from defective materials, delamination and defects in
manufacturer for a period of five (5) years from date of
manufacturer.
C. The contractor shall assume
responsibility for handling, installation and weather seal for a
period of one (1) year from date of substantial completion.
PART 2 PRODUCTS
2.01 MATERIALS
A. Acceptable Skylight
Manufacturers
1. TriStar Skylights/Savannah
Trims, Inc.
5601 Corporate Way Suite 416
West Palm Beach, FL 33407
(561) 640-0850 (Fax) 561-697-2897
2. Architect Approved Equal
a. Products of other
manufacturers must be pre-qualified to bid not less than 10 days
prior to bid date.
b. Submit proof of compliance
with SBCCI/Metropolitan Dade County Code Compliance criteria for
large missile impact test including supporting technical data,
engineering calculation, certification of equivalent experience
and samples for comparison.
B. Aluminum
1. Extruded aluminum structural
members shall be 6063-T6 alloy and temper and not less than
nominal .125" wall thickness for master frame and rafters
and not less than a nominal .100" on purlins.
2. Aluminum caps and closures
shall be 6063-T5 alloy and temper and be not less than nominal
.062" wall thickness with cover plates being not less than
nominal .050"
C. Finishes (Select Organic or
Anodic)
1. Organic. Finish all exposed
areas of aluminum framing and components in accordance with AAMA
603.8 or 605.2. *Color to be selected by architect
DESIGNATION DESCRIPTION AAMA
SPECIFICATION
AA-M12-C41-R1X Polyester Based
* 603.8
AA-M12-C41-RIX Kynar Based *
605.2
2. Anodic. Finish all exposed
areas of aluminum framing and components in accordance with AAMA
607.1
DESIGNATION DESCRIPTION AAMA
SPECIFICATION
AA-M10-C22-A41 Anodized 607.1
D. Glazing Gaskets and Setting
Blocks
1. Glazing gaskets shall be of
extruded dense EPDM, 50 durometer per ASTM C-509
2. Setting Blocks are to be
neoprene with a 90 durometer and conform to ASTM D2240.
E. Fasteners
1. All fasteners, exterior and
framework, are to be 300 series stainless steel.
2. Cadmium, zinc, nickel plated
steel and hot dipped galvanized are not allowed.
F. Glass
1. Laminated glass shall be
Globe Amerada Glass Company’s P-380 Series Hurricane Glazing .
Minimum overall composition should not be less than 3/8".
2. Contact Savannah Trims Inc.
(561-640-0850) for detailed specifications and glass performance
such as reflectivity, colors, tint and Low E performance.
G. Sealants
1. A sealant that is compatible
with all substrates and field applied in accordance with the
manufacturer’s recommendations.
2. Glass to frame sealant
should be GE Sillpruf and field applied in accordance with the
manufacturers’s recommendations.
2.03 FABRICATION
A. Skylights shall be factory
fabricated and assembled at the manufacturer’s factory where
feasible. Assemble in the largest possible sections according to
job-site conditions.
B. Design rafter bars and cap
to accept glazing gaskets.
C. Cover all exposed to view
pressure plates with an extruded snap in place cover plate.
D. Use setting blocks to
support glass.
E. All welding shall be Tig
welding and ground smooth where visible.
F. Locate weep holes to
properly drain water to the exterior at each rafter.
PART 3 EXECUTION
3.01 INSTALLATION
A. After verification of field
conditions and properly prepared openings, install skylight
system in strict accordance with approved submittal drawing.
B. Skylight system must be
installed by a factory authorized and licensed contractor.
C. Protect all dissimilar
metals with a heavy coat of zinc chromate or bituminous paint.
D. Install true and plumb
without warping or racking.
E. Apply appropriate sealants
where indicated on shop drawings and in accordance with
manufacturers recommendations.
3.02 CLEANING AND PROTECTION
A. Clean all exposed surfaces
and remove labels and excessive silicone from skylight system.
B. Touch up any finish blemish
and replace parts that cannot be successfully cleaned or
repaired.
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