TM 5-5420-234-14&P
5-5.
BAP GENERAL WELDING MAINTENANCE (continued).
(8)
Center Roller Crossmember to Main Rails. These welds join the center roller crossmember tube to the
main rails. Sound welds in these joints are necessary to ensure support of the loaded BAP during
handling and transport. A crack should be repaired before it reaches 1.0 inch (25.4 mm) in length. The
combined length of multiple cracks at either of the rail joints should not exceed 1.5 inches (38.1 mm).
(9)
X-Bracket to X-Brace and to Main Rails. These welds join x-brace members and join x-braces to main
rails. Sound welds in these joints are necessary to ensure that the frame, with load, will remain square
during handling and transport. A crack should be repaired before it reaches 1.0 inch (25.4 mm) in
length. The combined length of multiple cracks at any one of the x-brace joints should not exceed 2.0
inches (50.8 mm).
(10)
Rear Beam Outrigger Tubes to Main Rails. These welds join rear beam outrigger tubes to gusset plates,
which join to main rails and to beam center segment. Sound welds in these joints are necessary to
ensure safe support of bridge bays during handling and transport as well as supporting loaded BAP
when resting on BAP rear feet. A crack should be repaired before it reaches 1.5 inches (38.1 mm) in
length. The combined length of multiple cracks at any one joint should not exceed 2.0 inches (50.8
mm).
(11)
Rear Roller Axles to Beam End Plates. These welds join rear roller axles to beam end plates. Sound
welds in these joints are necessary to ensure safe support of bridge bays during handling and transport.
A crack should be repaired before it reaches 1.0 inch (25.4 mm) in length. The combined length of
multiple cracks at either of the axle joints should not exceed 1.5 inches (38.1 mm).
11
4
1
5
9
10
3
7
8
6
9
5
4
1
11
5-70
