ARMY TM 5-5420-212-10-1
MARINE CORPS TM 08676A-10/1-1
(3)
Place retainer clips on both ends of headless pin.
(a)
Inside retainer clip will keep nose cross girder post from slipping off headless pin.
(b)
Outside retainer clip will keep pin from working out of hole.
(4)
Carry the launching nose cross girder over the rear roller beam and slide girder up the posts to correct setting
(para. 4-11c.).
(5)
Position the captive pin at the position chosen by design and lower post jaw onto captive pin, then insert top
pin in top pin hole.
(6)
After the bridge is launched remove the assembly as described in paragraph 4-11a. step (7). It will be
necessary to have personnel positioned inside the bridge at the junction panel. Two cargo-tie down straps
can be used to ease the lifting of the launching nose cross girder.
c.
Setting Launching Nose Cross Girder
The launching nose cross girder can be positioned at various heights to accommodate differences in bank
heights. The nose cross girder posts are marked to indicate the different positions. The final position of the launching
nose cross girder is determined by design.
WARNING
During following procedure NCOIC must ensure that CG of bridge remains between roller beams
when launching nose is boomed [steps (2) and (8)]
It is easier to construct the launching nose in middle position. Setting the nose cross girder in a high position
involves difficult lifts, which can be avoided by following this drill:
(1)
Set the nose cross girder in middle position.
(2)
Construct the nose in the usual way but only boom until its balance point is over the nose roller.
4-35
WHITE STRIPE (FOR MULTI-SPAN BRIDGES)
HOLES NUMBERED 3, 5, 7, 9 AND 10
(FROM BOTTOM UP)
NOT USED ON U.S. BRIDGES
YELLOW STRIPE (FOR DS BRIDGES)
HOLES NUMBERED 2, 4, 6, AND 8
(FROM BOTTOM UP)
HIGH POSITION 6 - BETWEEN HOLES 6 AND 8
MID POSITION 4 - BETWEEN HOLES 4 AND 6
LOW POSITION 2 - BETWEEN HOLES 2 AND 4
BLACK STRIPE (FOR SS BRIDGES)
HOLES NUMBERED 2, 2, 4 AND 6
(FROM BOTTOM UP)
HIGH POSITION 4 - BETWEEN HOLES 4 AND 6
MID POSITION 2 - BETWEEN HOLES 2 AND 4
LOW POSITION 1 - BETWEEN HOLES 1 AND 2
