TM 5-5420-278-10
0035 00
0035 00-28
BRIDGE ANCHORAGE (Contd)
INSTALLATION OF AN OVERHEAD CABLE ANCHORAGE SYSTEM
When constructing an overhead cable system to be used as the primary
(upstream) anchorage system for a bridge, construct this system at the same time as
the bridge. As bridge bays are brought and connected to the bridge, connect them to
the overhead cable using bridle lines. Usually, one engineer platoon has sufficient
personnel to construct a complete single cable overhead anchorage system. When
practical, the work on the far shore should progress simultaneously with the work
on the near shore.
a. Organization. Table 14 provides a list of tasks to accomplish when
constructing an overhead cable system. A suggested crew size for each task is also
given.
TASK
CREW SIZE
NCO
EM
Far shore:
Install deadman . . . . . . . . . . . . . . . . . . . . . . . . . . . .
1
3
Erect tower . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
1
8
Adjust cable to tower and deadman . . . . . . . . . . . . .
1
2
Install approach guys . . . . . . . . . . . . . . . . . . . . . . .
1
2
Near shore:
Install deadman . . . . . . . . . . . . . . . . . . . . . . . . . . . .
1
3
Erect tower . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
1
8
Adjust cable to tower and deadman . . . . . . . . . . . . .
1
2
Install approach guys . . . . . . . . . . . . . . . . . . . . . . .
1
2
Over the water:
Transport cable to far shore . . . . . . . . . . . . . . . . . .
1
2
Attach bridle lines . . . . . . . . . . . . . . . . . . . . . . . . . .
1
4
Table 14. Organization for Construction of Overhead Cable System.
b. Installation of Deadman.
(1) Cut deadman to length and attach bearing plates as specified by the design
procedure.
(2) When installing a deadman, dig a hole or trench perpendicular to the cable to
be attached to the deadman. Place the deadman in this hole. Dig a sloping
trench, which has the same slope as the cable, in front of the hole in which
the deadman is placed. This will allow the cable free access to the deadman.
(Refer to figure 15.)
