(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).
(c) Lift first stave (5) slightly so bottom
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
2. HEAVY LONG TIMBER
3. SHORT TIMBER
Figure 3-15. Removing timber blocking