[SUBMITTAL INFORMATION]
IF THE HIDDEN GUIDE SPECIFICATION CONVENTIONS DO NOT APPEAR PRECEEDING THIS
NOTE, TURN THEM ON AS FOLLOWS.
FOR MICROSOFT WORD 2000 and 2003, CLICK ON SHOW/HIDE ICON IN MENU BAR OR CHOOSE
TOOLS IN MENU BAR. THEN CLICK OPTIONS, VIEW TAB, UNDER FORMATTING MARKS, CHECK
HIDDEN TEXT.
FOR MICROSOFT WORD 2007, CLICK ON MICROSOFT OFFICE ICON LOCATED IN UPPER LEFT
CORNER OF MENU BAR. CLICK ON WORD OPTIONS AT BOTTOM OF DROP DOWN. THEN CLICK
ON DISPLAY. CHECK THE HIDDEN TEXT BOX.
FOR MICROSOFT OFFICE 2010, CLICK ON FILE BUTTON LOCATED IN UPPER LEFT CORNER OF
MENU BAR. IN THE DROP DOWN, CLICK ON OPTIONS, AND A WORD OPTIONS BOX WILL
APPEAR. CLICK ON DISPLAY. CHECK THE HIDDEN TEXT BOX.
THE GUIDE SPECIFICATION CONVENTIONS SHOULD NOW BE VISIBLE IN THE DOCUMENT.
(Delete this note before printing.)
SECTION 07 72 33
ROOF HATCHES
(Edited from DeCA June 2015 Design Criteria)
PART 1 - GENERAL
1.1
SUMMARY
A.
Section Includes:
1.
2.
1.2
Roof hatches.
Safety railing system.
SUBMITTALS
A.
Product Data:
1.
B.
For each type of roof accessory indicated. Include construction details, material
descriptions, dimensions of individual components and profiles, and finishes.
Submittal List:
Reference
1.2A
Submittal Item
Product Data
Quantity
X
Action
R
X Submit quantity specified in Division 01 Section Administrative Requirements.
R Review each submittal, mark to indicate action taken, and return.
I Submittal is for information or record purposes only. No action will be taken.
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ROOF HATCHES
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1.3
QUALITY ASSURANCE
A.
1.4
NRCA's "Roofing and Waterproofing Manual" details for installing units.
DELIVERY, STORAGE, AND HANDLING
A.
1.5
Pack, handle, and ship roof hatches properly labeled in heavy-duty packaging to prevent
damage.
COORDINATION
A.
Coordinate layout and installation of roof hatches with roofing membrane and base flashing
and interfacing and adjoining construction to provide a leakproof, weathertight, secure, and
noncorrosive installation.
PART 2 - PRODUCTS
2.1
MANUFACTURERS
A.
2.2
Basis-of-Design Products: To establish the significant qualities related to type, function,
dimension, in-service performance, physical properties, appearance, and other characteristics
for purposes of evaluating comparable products of other manufacturers, a specific
manufacturer's product is named and accompanied by the words "basis of design," including
make or model number or other designation. Subject to compliance with requirements, provide
either the named products or equal products.
METAL MATERIALS
A.
2.3
Galvanized Steel Sheet: ASTM A 653/A 653M, G90 coated.
MISCELLANEOUS MATERIALS
A.
Cellulosic-Fiber Board Insulation:
1.
B.
Glass-Fiber Board Insulation:
1.
C.
ASTM C 208, Type II, Grade 1, 1 inch thick.
ASTM C 726, 1 inch thick.
Polyisocyanurate Board Insulation:
1.
ASTM C 1289, 1 inch thick.
<Insert project name and location>
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ROOF HATCHES
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[SUBMITTAL INFORMATION]
2.4
ROOF HATCHES
A.
Roof Hatches:
1.
Fabricate roof hatches with insulated double-wall lids and insulated double-wall curb
frame with integral deck mounting flange and lid frame counterflashing. Fabricate with
welded or mechanically fastened and sealed corner joints.
Provide continuous
weathertight perimeter gasketing and equip with corrosion-resistant or hot-dip galvanized
hardware.
a.
2.
3.
4.
Basis-of-Design Products: Bilco Company (The), Type NB for ship stair access.
Loads: Fabricate roof hatches to withstand 40-lbf/sq. ft. external and 20-lbf/sq. ft. internal
loads.
Type and Size: Single-leaf lid, 30 by 54 inches.
Curb and Lid Material: Galvanized steel sheet, 0.079 inch thick.
a.
b.
Shop Finish: Mill phosphatized and prime painted.
Field Painted Finish: Refer to the following for finishing requirements:
1)
2)
5.
6.
7.
8.
9.
10.
11.
B.
Division 09 Section Painting and Coating.
Color: Dark Bronze.
Insulation: Cellulosic-fiber, glass-fiber, or polyisocyanurate board.
Interior Lid Liner: Manufacturer's standard metal liner of same material and finish as
outer metal lid.
Exterior Curb Liner: Manufacturer's standard metal liner of same material and finish as
metal curb.
Lid Liner: Manufacturer's standard metal liner of same material and finish as metal curb.
Fabricate units to minimum height of 12 inches, unless otherwise indicated.
Sloping Roofs: Where slope or roof deck exceeds 1:48, fabricate hatch curbs with height
tapered to match slope to level tops of units.
Hardware: Galvanized steel spring latch with turn handles, butt- or pintle-type hinge
system, and padlock hasps inside and outside.
Safety Railing System:
1.
Manufacturer's standard complete system including rails, clamps, fasteners, safety
barrier at railing opening, and all accessories required for a complete installation.
a.
2.
Hatch rail system shall satisfy the requirements of OSHA 29 CFR 1910.23 and shall meet
OSHA strength requirements with a factor of safety of two, and the following:
a.
b.
c.
3.
4.
Basis-of-Design Products: Bilco Company (The), Bil-Guard - Model RL-S.
Uniform load of 50 lbf/ ft. applied in any direction.
Concentrated load of 200 lbf applied in any direction.
Uniform and concentrated loads need not be assumed to act concurrently.
Height: 42 inches, minimum, above finished roof deck.
Posts and Rails: Round pultruded reinforced fire retardant yellow fiberglass treated with
a UV inhibitor.
<Insert project name and location>
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ROOF HATCHES
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[SUBMITTAL INFORMATION]
a.
b.
5.
6.
7.
8.
9.
10.
UV and corrosion resistant construction with a twenty-five year warranty.
High visibility safety yellow color shall be molded in.
Self-Latching Gate: Fabricated of same materials and rail spacing as safety railing
system. Provide manufacturer's standard hinges and self-latching mechanism.
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
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.
Hardware:
a.
b.
c.
Mounting brackets: 1/4 inch thick hot dip galvanized steel.
Hinges and post guides: 6063T5 aluminum.
Fasteners: Type 316 stainless steel.
PART 3 - EXECUTION
3.1
EXAMINATION
A.
General:
1.
2.
3.
4.
3.2
Examine substrates, areas, and conditions, with Installer present, to verify actual
locations, dimensions, and other conditions affecting performance of work.
Verify that substrate is sound, dry, smooth, clean, sloped for drainage, and securely
anchored and is ready to receive roof accessories.
Verify dimensions of roof openings for roof hatches.
Proceed with installation only after unsatisfactory conditions have been corrected.
INSTALLATION
A.
General:
1.
2.
3.
Install roof accessories according to manufacturer's written instructions. Anchor roof
accessories securely in place and capable of resisting forces specified. Use fasteners,
separators, sealants, and other miscellaneous items as required for completing roof
accessory installation. Install roof accessories to resist exposure to weather without
failing, rattling, leaking, and fastener disengagement.
Install roof accessories to fit substrates and to result in surface drainage and watertight
performance.
Metal Protection: Where dissimilar metals will contact each other or corrosive substrates,
protect against galvanic action by painting contact surfaces with bituminous coating or by
other permanent separation as recommended by manufacturer.
a.
b.
Coat concealed side of roof hatches with bituminous coating where in contact with
wood, ferrous metal, or cementitious construction.
Underlayment: Where installing exposed-to-view components of roof hatches
directly on cementitious or wood substrates, install a course of felt underlayment
and cover with a slip sheet, or install a course of polyethylene underlayment.
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ROOF HATCHES
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[SUBMITTAL INFORMATION]
c.
4.
5.
6.
7.
3.3
Bed flanges in thick coat of asphalt roofing cement where required by roof
accessory manufacturers for waterproof performance.
Install roof accessories level, plumb, true to line and elevation, and without warping, jogs
in alignment, excessive oil canning, buckling, or tool marks.
Roof Hatch Installation: Check roof hatch for proper operation. Adjust operating
mechanism as required. Clean and lubricate joints and hardware.
Safety Railing System Installation: Attach hatch rail system to the cap flashing of roof
hatch; do not penetrate any roofing material.
Seal joints with elastomeric sealant as required by manufacturer of roof hatches.
TOUCH UP
A.
Factory-Primed Surfaces:
1.
B.
Galvanized Surfaces:
1.
3.4
Touch up factory-primed surfaces with compatible primer ready for field painting in
accordance with Division 09 painting Sections.
Clean field welds, bolted connections, and abraded areas and repair galvanizing to
comply with ASTM A 780.
CLEANING
A.
Clean exposed surfaces according to manufacturer's written instructions.
END OF SECTION
<Insert project name and location>
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ROOF HATCHES
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