Figure 3-15. Removing timber blocking

TM 5-5430-209-12

(b) Set stave (1) in position with its left

seam outside the right seam of next-to-last stave (4)

and its right seam inside the left seam of first stave (5).

Loosen bottom chime nuts (6) of stave (5).

chime of last stave (1) slips into place. Use drift pins (3,

fig. 3-12) and aline bolts in staves (1, 4, and 5, fig. 3-

14). Follow procedure in step (3) (c) above.

(d) Install nuts (6, fig. 3-14) on bolts (2)

in bottom chime. Install 1/2-by 1 2 -inch scaffold

mounting bolts in the third and twentieth bolt holes,

counting down from top chime, in vertical seam of every

stave. Install remaining bolts in all seams.

Install recessed washers (cup side down) and nuts

(rounded face down) on all bolts. Do not tighten.

(e) Tighten all bottom chime bolts

uniformly. Remove blocking (1, fig. 3-15) placed under

bottom chime. Use a heavy long timber (2) as a lever

and short timbers (3) as a fulcrum to lift the chime.

Tighten all seam bolts; be careful not to crush the

gaskets.

1. BLOCKING

2. HEAVY LONG TIMBER

3. SHORT TIMBER

Figure 3-15. Removing timber blocking

3-14