TM-5-5420-279-10
Bridge Bearing
1.2.8.1
The minimum allowable bearing length (i.e. length of bridge at each end resting on the
bank) of an emplaced bridge must not be less than 19.6in (500 mm). There is no
maximum bearing length, the bridge is capable of accepting bearing support over its entire
length.
NOTE
If the home bank slope is less than level, AND the home bank bearing is greater than 33.5in
(0.85m) then site preparation is required prior to bridge deployment.
1.2.8.2
An example is shown below: -
'AR' Span
= 124.6ft (38m)
Bridge Length
= 136.8ft (41.7m)
Home Bank Bearing (from calculation)
= 9.3ft (2.85m)
Home Bank Slope
= + 1:10
33.5IN (0.85M)
+1:10 SLOPE
HOME BANK
TRAFFICKING THE BRIDGE IN THIS CONDITION WILL SEVERELY DAMAGE THE BRIDGE
