Provide Roof Hatch Where Noted

MPS Master SECTION 07 72 33

ROOF HATCH

PART - GENERAL

SUMMARY

Section Includes:

Provide roof hatch where noted.

Provide safety railing attached to roof hatch.

Related Work:

Electrical Contractor: Install security system contact switches on-site at interior of roof hatches.

SUBMITTALS

General Requirements: Provide submittals in accordance with Section 01 33 00.

Shop Drawings: Indicate dimensions, description of materials and finishes, general construction, component connections, anchorage methods, hardware, and installation procedures.

PART - PRODUCTS

MATERIALS

Acceptable Manufacturers: Subject to compliance with requirements of the Contract Documents, acceptable manufacturers are as follows or Owner approved equal:

Babcock-Davis, a Cierra Products Inc. Company, Model B-RHG Bilco Company, Model L-20 Dur-Red Products, Model NSH (Normal Stair Hatch) Milcor, Inc., Model M-3 Nystrom Building Products, Model RHG J. L. Industries, Inc., a Division of Activar Construction Products Group, Model RHG-3 Karp Associates, Inc., Model KRHG

Size: 2'-6" wide by 8 feet long.

Fabrication:

Curb and cover of fully welded construction.

Curb/Frame: 14 gauge galvanized steel sheet, 12-inch high curb with integral combination cap/counterflashing, mounting flange continuous around base of frame. Insulate exterior face of frame with 1-inch thick rigid insulation.

Cover: Composite construction, consisting of 1-inch thick rigid insulation covered with a 14 gauge galvanized steel sheet exterior pan and a not less than 22 gauge galvanized

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steel sheet interior cover liner.

Finish: Factory applied primer over galvanized steel sheet.

Hardware:

Hinges: Heavy pintle type.

Cover Lifting Mechanism: Compression springs contained within telescopic tubes located within hatchway or torsion coil type spring located within hatch frame/curb.

Hold Open Device: Automatic hold-open arm with vinyl grip handle.

Latch: Spring type with inside and outside operating handles.

Locking Provisions: Padlock hasp on interior. Owner will provide padlock.

Weatherstripping: Neoprene or rubber gasket type weatherstripping continuous around perimeter of cover.

ACCESSORIES

Roof Hatch Safety Railing System: Manufacturer's standard complete system including rails, clamps, fasteners, safety barrier at railing opening, and all accessories required for a complete installation.

Acceptable Manufacturers: Subject to compliance with requirements of the Contract Documents, acceptable manufacturers are as follows or Owner approved equal:

Babcock-Davis, a Cierra Products Inc. Company, B-RHSR-FB Bilco Company, Bil-Guard Dur-Red Products, Safety Railing System J. L. Industries, Inc., a Division of Activar Construction Products Group, HatchGuard Milcor Inc., a Gibraltar Company, Safety Railing Nystrom, Inc., RHSR-FB KeeHatchJ Railing System, The Safety Rail Source, RHSR-FB

Test Load: 200 Foot Pounds

Height: 42 inches above finished roof deck.

Pipe or Tube: 1 1/4-inch, inside diameter, galvanized pipe or 1 5/8-inch, outside diameter, galvanized tube.

Flat Bar: 2-inch high by 3/8-inch thick galvanized steel.

Chain Passway Enclosure: Galvanized proof coil chain with quick link on fixed end.

Pipe Ends and Tops: Covered or plugged with weather-resistant material.

Provide weep holes or another means to drain entrapped water in hollow sections of handrail and railing members that are exposed to exterior or to moisture from

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condensation or other sources.

Fabricate joints that will be exposed to weather in a watertight manner.

Close exposed ends of handrail and railing members with prefabricated end fittings.

Fasteners: Manufacturer's standard.

PART - EXECUTION

EXAMINATION

Verification of Conditions: Examine site conditions under which work of this Section will be performed.

Identify conditions detrimental to providing proper quality and timely completion of work.

Do not proceed with installation until detrimental conditions have been corrected.

INSTALLATION

General Requirements:

Install as shown on Drawings and in accordance with manufacturer's instructions.

Position hatch over roof opening and bolt or weld to roof construction for a secure installation.

Install roof hatch to be level at top of curb. When roof structure slopes, install curb on tapered wood shims.

Attach safety railing system to roof hatch curb in accordance with manufacturer’s instructions.

END OF SECTION

07 72 33 - 3 Roof Hatch