2.2.3
Door Reinforcement for Hardware
a.
Mortise, reinforce, drill, and tap doors at the factory for
mortised hardware in accordance with the approved hardware
schedule and templates. Doors to receive surface-mounted hardware
shall have inner reinforcing plates for drilling and tapping to be
performed in the field.
b.
For each mortised hinge, provide a reinforcing plate measuring 5
by 38 by 250 mm 3/16 by 1 1/2 by 10 inches that is continuously
welded inside the edge channel. The top hinge preparation shall
be additionally braced by a channel, welded to the back of the
hinge reinforcing plate and inside the edge reinforcing channel.
c.
Where detention locks are scheduled, provide reinforced pocket to
receive locks. The secure side of the door shall be finished
flush with a 5 mm 3/16 inch backup plate to protect lock. Form
the pocket perimeter of 12 gage channels on three sides with the
door edge channel completing the perimeter frame. Do not cut the
door edge channel except for passage of the lock bolt. Provide a
5 mm 3/16 inch thick steel mounting and protection plate to cover
the lock pocket and extend at least 20 mm 3/4 inch on three sides
beyond the cutout. Secure the lock to the protection plate in
accordance with the lock manufacturer's instructions. Secure the
cover plate to the door by at least six 6 mm 1/4 inch
security-type machine screws. Make provisions so that removal of
the lock is impossible when the lock bolt is extended.
d.
Reinforcements for door pulls shall be 5 mm 3/16 inch steel welded
inside door. Reinforcement size shall be 38 by 250 mm 1 1/2 by 10
inches for loop type pull and 150 by 175 mm 6 by 7 inches for
flush type pull. Minimum 12 gage reinforcing shall be welded
inside the door for all other surface hardware items.
2.2.4
Frame Reinforcement for Hardware
a.
Mortise, reinforce, drill, and tap frames at the factory for
templated mortised hardware, in accordance with the approved
hardware schedules and templates. Where surface-mounted hardware
is to be applied, frames shall have reinforcing plates completely
drilled and tapped for installation in the field.
b.
For each mortised hinge, provide a 7 gage, off-set reinforcing
plate that is factory drilled and tapped and measures 38 by 250 mm
1 1/2 by 10 inches. Top hinge reinforcement shall be additionally
braced by a 7 gage backup angle welded to the reinforcement and to
the inside of the frame trim.
c.
Where electrical frame-mounted locks are used, provide a special
housing with a 7 gage backup for attachment of the lock and a lock
cover plate of the same thickness. Provide a junction box or
enclosure behind each item of electrical hardware on the frame.
Conduit shall be factory installed between interconnecting
electrical items within each frame.
d.
All other mortised and surface-mounted hardware reinforcements
shall be not less than 12 gage.
SECTION 11193
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