TM-5-5420-279-10
Section III. PREPARATION
Preparing the Bridge for Retrieval
WARNING
CRUSH HAZARD. WHEN PREPARING TO RETRIEVE A BRIDGE, ALWAYS MAKE SURE
THAT THE BRIDGE SURFACE HAS BEEN SWEPT AND IS FREE OF MUD, ICE AND SNOW,
IN SEVERE CASES IF A BUILD UP IS ALLOWED THE EXTRA WEIGHT COULD OVERLOAD
THE CRANE. FAILURE TO HEED THIS INSTRUCTION COULD LEAD TO SEVERE INJURY
OR DEATH TO PERSONNEL.
5.3.1.1
Make sure that the bridge surface has been swept and it is free of mud, ice and
snow. As much dirt and compacted dirt as practical must be removed from the hinge
areas to prevent folding problems during recovery.
5.3.1.2
Rotate the bridge edge markers and clip in their stowed position.
5.3.1.3
Drop all the curbs to their stowed positions and clip. It may be necessary to use the
handles to raise them so they can be dropped.
5.3.1.4
Clean the bridge surface by scraping if necessary and sweep over the bridge sides.
5.3.1.5
Make sure that the curb locations are clean.
5.3.1.6
Recover the defile markers and road form spikes from approach and exits of bridge
and stow.
Preparing the Bridge Site for Bridge Retrieval
5.3.2.1
Refer to Chapter 1, Section II, Table 1.12 and make sure the soil bearing capacity
has not been adversely affected by bridge traffic and is within the limits set down in
5.3.2.2
Refer to Chapter 1, Section II Fig 1.9 and make sure the bridge approach slopes
have not been adversely affected by bridge traffic and are within the limits.
NOTE
This is particularly important if retrieval is effected from the opposite bank to that used for
the bridge deployment.
5.3.2.3
Refer to Chapter 1, Section II paragraph 1.2.11.5 and make sure the retrieval
construction site is of sufficient size and meets the slope and height parameters set
out in Fig 1.9.
5.3.2.4
Refer to Chapter 1, Section II paragraph 1.2.11.6 and make sure the local weather
conditions have not adversely affected the site.
