15 pounds) for hollow metal doors, 135 and 90 N (30
and 20 pounds) for structural steel doors, and 180
and 90 N (40 and 20 pounds) for 200 mm (8 inch)
thick reinforced concrete doors and heavy structural
steel doors. Use the lower values for structural
and hollow metal doors when rolling bearing hinges
are specified.
For latch engagement and release, specify 90 to 135
N (20 to 30 pounds) for structural steel doors
without gasket seals and for reinforced concrete
doors. Specify 135 to 180 N (30 to 40 pounds) for
structural steel doors with gasket seals is
recommended to accommodate the extra force required
to compress the gasket during latching.
For means of egress, specify NFPA 101 operating
forces. In this case, Type I (rolling bearing)
hinges are recommended.
Operating requirements will be specified in
paragraph BLAST DOOR ASSEMBLIES.
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The force required to set the door in motion shall be measured from the
90-degree open position, and the force required to engage and release the
latches shall be measured at the latch handle with the door in the normal
closed position.
1.4
QUALIFICATIONS
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NOTE: Delete AWS D1.3 requirement when hollow metal
doors are not specified. Delete AWS D1.4
requirement when reinforced concrete doors are not
specified.
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Welders, welding operators, and weld inspectors shall be qualified in
accordance with AWS D1.1/D1.1M [except that] [welders performing arc
welding of steel sheet and strip shall be qualified in accordance with AWS
D1.3] [and] [welders and weld operators performing welding of reinforcing
bars shall be qualified in accordance with AWS D1.4].
1.5
DELIVERY AND STORAGE
Door assemblies delivered and placed in storage shall be stored with
1.6
WARRANTY
Manufacturer's written warranty covering the blast door assembly for 2
years after acceptance by the Government shall be furnished. Warranty
shall provide for repair and replacement of the blast door assembly and
individual hardware and accessory items in the event of malfunction due to
defects in design, materials, and workmanship except that the warranty need
SECTION 08390
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