SECTION 07 72 00
ROOF ACCESSORIES
PART 1 GENERAL
1.01 SECTION INCLUDES
A.
Manufactured curbs, equipment rails, and pedestals.
B.
Roof hatches.
1.02 RELATED REQUIREMENTS
A.
Section 05 31 00 - Steel Decking.
B.
Section 05 50 00 - Metal Fabrication
C.
Division 7 - Thermal and Moisture Protection: Roofing System
D.
Section 07 41 13 - Metal Roof Panels.
E.
Section 07 62 00 - Sheet Metal Flashing and Trim: Roof accessory items fabricated from sheet
metal.
F.
Section 07 71 00 - Roof Specialties: Other manufactured roof items.
1.03 REFERENCE STANDARDS
A.
ASTM A123/A123M - Standard Specification for Zinc (Hot-Dip Galvanized) Coatings on Iron
and Steel Products; 2012.
B.
ASTM A153/A153M - Standard Specification for Zinc Coating (Hot-Dip) on Iron and Steel
Hardware; 2009.
C.
ASTM A653/A653M - Standard Specification for Steel Sheet, Zinc-Coated (Galvanized) or ZincIron Alloy-Coated (Galvannealed) by the Hot-Dip Process; 2011.
D.
MSS SP-58 - Pipe Hangers and Supports - Materials, Design, Manufacture, Selection,
Application, and Installation; Manufacturers Standardization Society of the Valve and Fittings
Industry, Inc.; 2009.
1.04 SUBMITTALS
A.
See Section 01 30 00 - Administrative Requirements, for submittal procedures.
B.
Product Data: Manufacturer's data sheets on each product to be used.
1. Preparation instructions and recommendations.
2. Storage and handling requirements and recommendations.
3. Installation methods.
4. Maintenance requirements.
C.
Shop Drawings: For non-penetrating rooftop supports, submit detailed layout developed for
this project, with design calculations for loadings and spacings.
1.05 QUALITY ASSURANCE
A.
Pre-Installation Conference: Participate in conference with insulation and built-up roofing
manufacturer and applicator as required in roofing section.
1.06 DELIVERY, STORAGE, AND HANDLING
A.
Store products in manufacturer's unopened packaging until ready for installation.
PVHMC Outpatient Pavilion
Project No. 40207-002
OSHPD Bld-_____ - Facility No. 11966_-0
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B.
Store products under cover and elevated above grade.
1.07 WARRANTY
A.
Extended Warranty, Roof Hatches and Smoke Hatches: Manufacturer's standard five year
warranty.
PART 2 PRODUCTS
2.01 MANUFACTURED CURBS
A.
Manufactured Curbs, Equipment Rails, and Other Roof Mounting Assemblies:
1. Curbs
a. AES Manufacturing Inc.: www.aescurb.com.
b. Custom Curb, Inc.; Model No. CRC-3.
c. Thybar Corp.; Model No. TC-3; www.thybar.com
d. The Pate Company Model No. pc-2: www.patecurbs.com.
e. Roof Products & Systems (RPS) by Commercial Products Group of Hart & Cooley, Inc:
www.rpscurbs.com.
2. Equipment Supports:
a. Custom Curb, Inc.; Model No. CES-3.
b. Thybar Corp.; Model No. TEMS-3; www.thybar.com
c. The Pate Company Model No. es-2: www.patecurbs.com.
3. Substitutions: See Section 01 60 00 - Product Requirements.
B.
Manufactured Curbs, Equipment Rails, and Other Roof Mounting Assemblies: Factoryassembled hollow sheet metal construction with fully mitered and welded corners, integral
counterflashing, internal reinforcing, and top side and edges formed to shed water.
1. Sheet Metal: Hot-dip zinc coated steel sheet complying with ASTM A653/A653M, SS
Grade 33; G60 coating designation; 18 gage, 0.048 inch thick.
2. Roofing Cants: Provide integral sheet metal roofing cants dimensioned to begin slope at
top of roofing insulation; 1:1 slope; minimum cant height 4 inches.
3. Manufacture curb bottom and mounting flanges for installation directly on roof deck, not
on insulation; match slope and configuration of roof deck.
4. Provide the layouts and configurations shown on the drawings.
C.
Curbs Adjacent to Roof Openings: Provide curb on all sides of opening, with top of curb
horizontal for equipment mounting.
1. Provide preservative treated wood nailers along top of curb.
2. Insulate inside curbs with 1-1/2 inch thick fiberglass insulation.
3. Height Above Finished Roof Surface: 8 inches, minimum.
4. Height Above Roof Deck: 14 inches, minimum.
D.
Equipment Rails: Two-sided curbs in straight lengths, with top horizontal for equipment
mounting.
1. Provide preservative treated wood nailers along top of rails.
2. Height Above Finished Roof Surface: 8 inches, minimum.
3. Height Above Roof Deck: 14 inches, minimum.
4. Provide gage of shell and size of nailers as necessary to support the full weight of the
equipment.
E.
Pipe, Duct, and Conduit Mounting Pedestals: Vertical posts, minimum 8 inches square unless
otherwise indicated.
PVHMC Outpatient Pavilion
Project No. 40207-002
OSHPD Bld-_____ - Facility No. 11966_-0
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1.
2.
3.
Provide sliding channel welded along top edge with adjustable height steel bracket,
manufactured to fit item supported.
Height Above Finished Roof Surface: 8 inches, minimum.
Height Above Roof Deck: 14 inches, minimum.
2.02 ROOF HATCHES
A.
Manufacturers - Roof Hatches:
1. Bilco Company; Type S E-20 (ladder access, standard square size, solid cover):
www.bilco.com.
2. Babcock-Davis Hatchways, Inc., Minneapolis, MN (888/412-3726), Model 6-102
BRHPG36x36S_T.
3. Dur-Red Products Model LH-g: www.dur-red.com.
4. Milcor by Commercial Products Group of Hart & Cooley, Inc: www.milcorinc.com.
5. Tristar Skylights, Santa Ana, CA (714/430-5300 or 800/609-9995).
6. Wasco Products, Inc., Sanford, ME (207/324-8060 or 800/388-1181).
7. Substitutions: See Section 01 60 00 - Product Requirements.
B.
Roof Hatches: Factory-assembled steel frame and cover, complete with operating and release
hardware.
1. Style: Provide flat metal covers unless otherwise indicated.
2. Mounting: Provide frames and curbs suitable for mounting on flat roof deck.
3. Size(s): As indicated on drawings; single-leaf style unless indicated as double-leaf.
a. For Ladder Access: Single leaf; 30 36 by 36 inches.
C.
Frames/Curbs: One-piece curb and frame with integral cap flashing to receive roof flashings;
extended bottom flange to suit mounting.
1. Material: Galvanized steel, 14 gage, 0.0747 inch thick.
2. Finish: Factory prime paint.
3. Insulation: 1 inch rigid glass fiber, located on outside face of curb.
4. Curb Height: 12 inches from finished surface of roof, minimum.
5. Flange: 3-1/2 inches (89 mm) with pre-drilled holes for attachment to roof deck..
D.
Metal Covers: Flush, insulated, hollow metal construction.
1. Capable of supporting 40 psf live load, internal loading of 20 psf (0.96 kPa).
2. Material: Galvanized steel; outer cover 14 gage, 0.0747 inch thick, liner 22 gage, 0.03
inch thick.
3. Finish: Factory prime paint.
4. Insulation: 1 inch rigid glass fiber.
5. Gasket: Neoprene, continuous around cover perimeter.
E.
Hardware: Steel, zinc coated and chromate sealed, unless otherwise indicated or required by
manufacturer.
1. Lifting Mechanisms: Compression or torsion spring operator with shock absorbers that
automatically opens upon release of latch; capable of lifting covers despite 10 psf load.
2. Hinges: Heavy duty pintle type.
3. Automatic hold open arm with vinyl-coated handle for manual release.
a. Automatic hold-open arm complete with red or contrasting colored vinyl grip handle
to permit easy release and one-hand control of cover to closed and latched position.
4. Latch: Upon closing, engage latch automatically and reset manual release.
5. Manual Release: Pull handle on interior.
6. Locking: Padlock hasp on interior.
PVHMC Outpatient Pavilion
Project No. 40207-002
OSHPD Bld-_____ - Facility No. 11966_-0
Addendum 3
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2.03 NON-PENETRATING ROOFTOP ASSEMBLIES
A.
Manufacturers - Non-Penetrating Rooftop Assemblies:
1. PHP Systems/Design: www.phpsd.com.
2. Substitutions: See Section 01 60 00 - Product Requirements.
B.
Non-Penetrating Rooftop Assemblies: Manufacturer-engineered and factory-fabricated, with
pedestal bases that rest on top of roofing membrane, not requiring any attachment to the
roof structure and not penetrating the roofing assembly.
1. Design Loadings and Configurations: As required by applicable codes.
2. Height: Provide minimum clearance of 6 inches under supported items to top of roofing.
3. Support Spacing and Base Sizes: As required to distribute load sufficiently to prevent
indentation of roofing assembly.
4. Steel Components: Stainless steel, or carbon steel hot-dip galvanized after fabrication in
accordance with ASTM A123/A123M.
5. Hardware, Bolts, Nuts, and Washers: Stainless steel, or carbon steel hot-dip galvanized
after fabrication in accordance with ASTM A153/A153M.
C.
Walkways, Stairs, and Platforms: Structural steel frame, walking surfaces, and railings.
1. Dimensions: As indicated on the drawings.
2. Walking Surfaces and Stair Treads: Steel grating, either formed plank grating or welded
bar grating; serrated surface.
D.
Pipe Supports: Provide attachment fixtures complying with MSS SP-58 and as indicated.
1. Attachment/Support Fixtures: As recommended by manufacturer, same type as indicated
for equivalent indoor hangers and supports; corrosion resistant material.
2. See relevant piping system specification section for additional requirements.
E.
Conduit and Cable Tray Supports:
F.
Non-Penetrating Pedestals: Steel pedestals with square, round, or rectangular bases.
1. Bases: High density polypropylene.
2. Base Sizes: As required to distribute load sufficiently to prevent indentation of roofing
assembly.
3. Steel Components: Stainless steel, or carbon steel hot-dip galvanized after fabrication in
accordance with ASTM A123/A123M.
2.04 ACCESSORIES
A.
Access Ladder Safety Post (Interior): Bilco Company, Model LU-1 LadderUP, safety post of high
strength steel with telescoping tubular section that locks automatically when fully extended.
Provide one for each roof scuttle (vertical ladder hatch). No known equal.
1. Upward and downward movement shall be controlled by a stainless steel corrosionresistant alloy spring balancing mechanism.
2. Finish: Black enamel.
3. Mounting: Factory assembled with fasteners for securing to rungs of access ladder,
specified elsewhere.
PART 3 EXECUTION
3.01 EXAMINATION
A.
Do not begin installation until substrates have been properly prepared.
B.
If substrate preparation is the responsibility of another installer, notify Architect of
unsatisfactory preparation before proceeding.
PVHMC Outpatient Pavilion
Project No. 40207-002
OSHPD Bld-_____ - Facility No. 11966_-0
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3.02 PREPARATION
A.
Clean surfaces thoroughly prior to installation.
B.
Prepare surfaces using the methods recommended by the manufacturer for achieving the best
result for the substrate under the project conditions.
3.03 INSTALLATION
A.
Install in accordance with manufacturer's instructions, in manner that maintains roofing
weather integrity.
B.
Operational Units: Test and operate units with operable components. Clean and lubricate
joints and hardware. Adjust for proper operation.
3.04 CLEANING
A.
Clean installed work to like-new condition.
3.05 PROTECTION
A.
Protect installed products until completion of project.
B.
Touch-up, repair or replace damaged products before Substantial Completion.
END OF SECTION
PVHMC Outpatient Pavilion
Project No. 40207-002
OSHPD Bld-_____ - Facility No. 11966_-0
Addendum 3
ROOF ACCESSORIES
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PVHMC Outpatient Pavilion
Project No. 40207-002
OSHPD Bld-_____ - Facility No. 11966_-0
Addendum 3
ROOF ACCESSORIES
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