equipment carts or other wheeled vehicles are used to move articles across
threshold. Ramps may be asymmetrical to account for different floor
elevations on each side, but slope of ramp shall not exceed 4:1 on either
side. Ramps shall be designed to support a [227] [_____] kg [500] [_____]
pound force applied to a 75-mm by 12.7-mm 3-inch by 1/2-inch footprint for
cargo loading. Footprint contact area shall be anywhere on the threshold
seal area covered by threshold protector. Provide mounting brackets,
convenient to the entry, to store ramp when not in use.
2.3.3
Locks and Interlocks
2.3.3.1
Cipher Locks
When specified by system design, provide cipher locks furnished by the door
manufacturer to ensure compatibility of the electric bolt/strike and the
controller. Cipher locks shall have the following features:
a.
Exterior push button panel with a minimum of 10 numbered buttons(a
combination of [4] [_____] of these buttons in proper sequence
will activate the door opener).
b.
Adjustable time penalty to block efforts to activate the door
opener when incorrect or out-of-sequence button is pushed.
c.
Adjustable door-open time control.
d.
Ease in changing the combination.
e.
Local alarm contact with manual reset to activate a bell if an
incorrect or out-of-sequence button is pushed.
f.
Latch bolt to be electrically operated on low voltage directly
from the door control unit.
g.
Adjustable volume bell to operate from the door control alarm unit.
h.
Adjustable volume buzzer to be activated by a separate push button
and a low voltage AC power source (with associated transformer and
connection).
i.
Provide emergency power or battery backup power to comply with
Life Safety Code NFPA 101.
2.3.3.2
Interlocks
Provide interlocks for vestibule HEMP shielded door pairs. Design
interlocks so that both doors cannot be opened at the same time during
normal operation. Provide a manual override to allow emergency egress.
Provide audible alarm, which continues to sound as long as both doors are
open. Provide a low-voltage alarm in a tamper proof enclosure and with a
sound intensity of [85] [_____] dB minimum at [3050] [_____] mm [10]
[_____] feet. Provide lights on inside of HEMP space and on outside of
exterior door to indicate that the other door is open. Integrate interlock
system into the cipher lock system. Interlock system shall be in a
fail-safe unlocked condition in the event of power failure. Ensure
activation of fire alarm shall override the interlock system. Provide
emergency power to interlock control.
SECTION 13095N
Page 13
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