ARMY TM 5-5420-212-10-1
MARINE CORPS TM 08676A-10/1-1
6-6.
ASSEMBLY - DOUBLE STORY 2E + 12 BAY (Restricted Site)
a.
General
Assembly on a restricted site is made possible by using a longer than normal launching nose. Since the assembly
procedures are similar to a 2E + 12 bay bridge on a normal site (para. 6-1) only the steps that are different are given in
detail.
b.
Assembly
(1)
Perform steps a. (1) and (2) and b. (1) thru (8) in paragraph 6-1.
(2)
Add seventh heavy nose section (7N1).
(3)
Lift gravity catch, remove carrying bar and push nose forward until anchorage tube in sixth nose section
is aligned with nose roller.
(a)
Insert panel pin through anchorage holes and tube.
(b)
Put retainer clip through end of panel pin.
(4)
Add bay 4, including sway brace.
(5)
Add eighth heavy nose section (8N1), boom nose forward and secure with panel pin as described in step
(3).
CAUTION
The following cautions should be observed each time the bridge is boomed. Do not allow vehicle
to drift right or left of centerline. Keep vehicle straight and in line with bridge. Movement of
bridge to right or left can cause damage to roller beams.
NOTE
Throughout the build the bridge is boomed using a vehicle, push bar and push bar cross girder
(para. 4-18) which must be disconnected before further bays are added. To simplify the following
procedures these drills are described "connect push bar" and "disconnect push bar."
(6)
Connect push bar. Unlock rollers and boom bridge to 1p6 (over RRB). Lock rollers, and disconnect
push bar.
(7)
Add bay 5, including sway brace.
(8)
Connect push bar. Unlock rollers and boom bridge to 2p3 (over RRB). Lock rollers, and disconnect
push bar.
(9)
Add bay 6, including sway brace.
(10) Connect push bar. Unlock rollers and boom bridge to 3p0 (over RRB). Lock rollers, and disconnect
push bar.
(11) Add bay 7, including sway brace.
6-56
