requirements for Special Purpose Type Fire Doors in accordance with NFPA 80.
Fire rated doors shall be constructed in accordance with NAAMM HMMA 850.
Certificate may be furnished in lieu of label. For oversized fire doors,
certificate shall state that doors are manufactured in compliance with the
requirements for doors of this type and class, and have been tested and
meet the requirements for the class indicated.
2.4.2
Sound Rated Doors
Sound rated doors shall be provided at locations shown on the drawings.
Door assemblies shall consist of door, hardware, frame, threshold, and
adjustable gaskets. The assembly shall have a Sound Transmission Class
(STC) rating [of] [_____] [as shown on the drawings] when tested in
accordance with ASTM E 90. [Manufacturer's descriptive data, and
certificate or test report showing compliance with the specified
requirements shall be submitted.] [The Contractor shall perform a field
test on the door assembly to determine if the STC is within 2 points of the
equivalent laboratory tested product. If the test reveals a less than
acceptable STC, the Contractor shall replace the door assembly and test the
new assembly to provide an acceptable rating.]
2.4.3
Door and Frame Fabrication
Special care shall be exercised during welding to prevent warping. Design
of stiffeners and attachment method of interior armor plates shall be such
that heat-affected areas which result from welding do not allow a potential
ballistic leak in product construction. The subsurfaces shall be flat,
parallel, and plumb after fabrication. Doors and frames shall be
constructed of [bullet-resistant steel] [or] [hollow metal with internal
armoring] and the completed assembly shall meet the specified regulatory
requirements. Doors shall be reinforced [and fully insulated] in
accordance with manufacturer's design. Steel door frames shall be mitered
or coped and welded at the corners with all welds ground smooth. Corner
assemblies shall be designed to eliminate ballistic penetrable seams.
Where structural channel frames are used, stops shall be made of 38 mm
1-1/2 inch by 16 mm 5/8 inch bars welded or top screwed to the frame at not
more than [150] [300] mm [6] [12] inch centers. Screws shall be
countersunk. Stops shall be so placed that full contact with the frame
will be assured. Any necessary reinforcements shall be made and the frames
shall be drilled and tapped as required for the hardware. Frame channels
shall be mitered or coped and welded at corners with full penetration
groove welds. Exposed welds shall be dressed smooth.
2.4.4
Sidelight Frames
Sidelight frames shall be constructed using door frame sections as shown on
the drawings. Stop height and rabbet depth shall be as required to
accommodate the bullet-resistant glazing material specified. Exterior
(attack side) glazing stops shall be welded or integral to the frame.
Interior (protected side) glazing stops shall be removable stops attached
with high-strength alloy steel machine screws with tamper-resistant heads.
2.4.5
Preparation for Hardware
Doors and frames shall be prepared for hardware in conformance with Section
08710 DOOR HARDWARE, and NAAMM HMMA 830. Drilling and tapping of frames
for surface applied hardware shall be performed in the field.
SECTION 11035
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