2.2.15
Gasket Seal
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NOTE: Gasket seals are recommended for reinforced
concrete doors.
Gasket seals installed in manually operated doors
are not recommended for reliable prevention of blast
leakage. Seals are typically used for reinforced
concrete doors to improve the weather seal and
provide a door silencer.
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Sealed doors shall have the full door perimeter and all door penetrations
sealed. Perimeter seals shall be the rubber gasket type. Gaskets shall be
removable, capable of sealing the mating surfaces, and resistant to the
atmospheric environment. One spare set of gasket seals shall be provided
for each door assembly for which gasket seals are specified.
2.2.16
Door Silencer
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NOTE: When gasket door seals are specified, the
gasket seal will act as the silencer.
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Rubber door silencers shall cushion the impact of the door against the
frame so that steel-to-steel contact is not made during closing.
2.2.17
Optical Device
The optical device (spy hole) shall be wide angle and shall not be breeched
or dislodged by the specified or indicated blast overpressure. The device
shall permit observation from the seating face of the door and shall be
located approximately 1.5 m 5 feet above the seating side floor and
approximately centered between the stiles.
2.3
ACCESSORIES
2.3.1
Subframe
At the Contractor's option, a subframe can be provided and built into the
structure prior to installation of the frame. The subframe and subframe
anchors shall be capable of transferring blast and rebound reactions to the
adjacent structure, and the frame shall be capable of transferring these
reactions to the subframe. The subframe shall be fabricated in the same
manner specified for the frame.
2.3.2
Nameplate
Each door assembly shall have a permanently affixed nameplate that displays
the manufacturer's name, place and year of manufacture, and the applicable
peak overpressure, impulse, and rebound rating.
2.3.3
Removable Threshold
The sill shall be flush with the adjacent floor when the threshold is
removed. The removable threshold shall be attached using approved
countersunk mechanical fasteners.
SECTION 08390
Page 22
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