TM 10-4320-303-13
e. Backfill trench (1) using dirt removed from step a. Fill trench (1) to a level 1 to 2 inches above
original roadbed before packing earth down. Ensure dirt is securely packed around sides of railroad
crossing guard.
2.3.8.7 Assembly and Installation of Suspension Devices .
Figure 2-38. Tripods and Wire Rope Installation.
a. Using available materials, construct a tripod (Figure 2-38, 1) on either side of stream (2), gap, or
other obstruction to be spanned. Tripods (1) should be strong enough and high enough to support
hoseline. Use manila rope to cross gully.
NOTE
Depending on the type of suspension kit issued with the equipment, anchor
stakes will either be angled or round.
b. Using driving head (6), drive an anchor stake (3) into ground at a 30 degree angle approximately 15
feet from each tower. Anchor stakes (3) should be in line with tripods (1) and extend approximately 6
inches above ground.
c. Hang a pulley block (4) from each tripod (1) and thread wire rope (5) through pulley (4) on near side.
Tie manila rope to wire rope (5).
d. Pull wire rope (5) across stream (2) or obstruction by manila rope.
e. When wire rope (5) reaches far side of stream (2) or obstruction, remove manila rope from wire rope
(5).
f. Thread wire rope (5) through pulley block (4) on far side of stream (2) or obstruction.
g. Construct loop of wire rope (Figure 2-39, 1) about 9 inches from one end of wire rope (2) and insert
thimble (3) into loop.
h. Locate two clamp assemblies (4, 5, and 6). Remove two nuts (4) and one clamp (5) from each U-bolt
(6).
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