TM 5-805-8
k. Door Sweeps. Door sweeps shown in figure 6
door closers with hold-open arms. Closers with fusible
make contact with a threshold when the door is closed
links will not be used on required fire exit doors. Door
and are generally installed on outswinging doors.
closers will be attached to the several types of fire doors
in accordance with NFPA 80. The use of a hold-open
device, equipped with a fusible link, will be disallowed in
a hospital occupancy on fire rated or smoke doors as they
will permit smoke to enter an area and still not release
until sufficient heat to fuse the link is reached (which may
not occur). Corner bracket will be used only where
required for rehabilitation work. Mechanisms will comply
with NFPA 101.
d. Door Coordinator. A door coordinator will be re-
quired for pairs of fire doors equipped with an
overlapping astragal.
e. Fire Exit Bolt. Where fire exit bolts are required on
fire doors, the crossbar locking or dogging feature will be
omitted in order to allow positive latching of the door
upon closing.
f. Electromagnetic Door Holders. When required to
hold fire exit doors in a normally open position,
electromagnetic door holders will be installed in accord-
ance with the requirements of NFPA 101, and must have
17. Hardware for fire-rated doors
fail-safe function. Smoke detectors and magnetic holders
conforming to BHMA A156.15 may be integrated with
The term "fire-rated doors" as used in this manual refers
door closers and
may be electromagnetic or
to hinged-type fire-resistant doors bearing the label of
electromechanical type smoke detectors and activators
Underwriters' Laboratories, Inc., or Factory Mutual
will be specified. Units will have been tested or labeled
Laboratories, as well as to nonlabeled hinged-type doors
by a nationally recognized independent testing laboratory.
constructed and hardware-equipped in accordance with
18. Electric hardware
the published standards of those laboratories. Hardware
includes hinges, locks, latches, flush bolts, door closers,
door coordinators, fire exit bolts, and door holders of
This section is to provide general information on electric
types either investigated by a nationally recognized
hardware and is not meant to supercede security require-
testing inspection agency or of acceptable design and
ments specified in other manuals. Electric hardware may
construction. For approved fire door hardware, see
be classified into four categories: locking, power transfer-
current Building Material Directory of Underwriters'
ring, door control, and switching devices. These devices
Laboratories, Inc. Fire door assemblies must meet the test
are either fail-safe or fail-secure. Fall-safe devices allow
requirements of BHMA A156.1, and must be in
the door to open and close (and latch) normally in the
compliance with NFPA 80 and NFPA 101.
case of loss of power, and fail-secure devices cause the
a. Hinges. Only ball bearing or oil impregnated
door to lock on key side upon loss of power. Care must
bearing steel or stainless steel hinges are acceptable for
be taken to weigh all factors of life safety and security,
use on fire-rated doors. Type, size, weight, the number of
and to specify the appropriate type of electric hardware
hinges required for the several classes of doors, and the
action. Electric locks will be fail-safe function. Electric
method of their attachment to door and door frame will be
strikes will be fail-safe or fail-secure. Fire doors will be
in accordance with the applicable requirements of NFPA
fail-safe. In order to reduce maintenance, time and cost,
80.
all devices should have the same manufacturer. This
b. Lockets and Latchsets. Lockets and latchsets will
limits the cost of additional service trailing and lowers the
be the heavy-duty mortise or mortise-integral type, or the
cost of parts maintenance.
a. Electrical System Coordination. Documents which
heavy-duty bored type. Knobs will have screwless
shanks. For single doors, the latch bolt will have a
are referenced in the selection of mechanical hardware for
minimum throw of inch; for pairs of doors, a single-
grade, type, and function are also applicable for selection
point lock with a -inch minimum throw latch bolt will
of electrified products. In addition, NFPA 70 may also
be provided on the active leaf of the pair, and an
guide, restrict, or limit the application of certain products.
extension lever flush bolt will be provided at the top and
Specifications must include power wiring and boosters if
bottom of the inactive leaf.
necessary to go with electric hardware. The attachment of
c. Door Closers. A door-closing device will be
products with voltage greater than 30 volts AC or 48
installed on each single fire door and on each leaf of a
volts DC to metallic doors and frames should always be
pair of active fire doors. Fusible links with a rating of
reviewed before acceptance. In no case should products
160 degrees Fahrenheit, will be provided on automatic
whose voltage exceeds these limits be used on
7
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