number of staves have been installed to
(5) Attach deck hook (3) to tackle block (4).
give rigidity to the ring.
(6) Lower tackle block and attach deck hook
(8) Remove gin pole and install nuts and
to the upper chime of a stave (5) as shown in figure 7-2.
bolts in the vacant holes of bottom chime. Tighten the
(7) Install and tighten all staves of the ring, as
described in paragraph 6-9b through f. Relocate the gin
(9) Install scaffold around top chime of
pole around the tank as necessary for hoisting the
secondring staves (para 6-10).
staves. After several staves are installed, gin pole
should be slanted toward the staves to be installed.
(10) Dress top chime of staves as described in
c. Third-Ring Staves.
Third ring staves are
Attach guy lines from outside of tank to
installed so that they straddle vertical lap seams of the
top chime of staves in order to stabilize
second-ring staves. Installation procedures are identical
the ring until it becomes self-supporting.
to those for second-ring staves (para b above) .
Remove guy lines when a sufficient
Section III. ASSEMBLY AND INSTALLATION OF TANK CENTER SUPPORT ASSEMBLY
Assembly of Umbrella-Type Deck Support
a. General. The unmbrella-type deck support is
identical to, and interchangeable with, the support used
on the 1000-barrel capacity tank as described in
(1) The tank center support is an assembly
consisting of the center support base (2, fig. 7-3),
bottom center support (1), middle center support (7), top
Refer to paragraph 6-12 and
center support (9), step plate (11), and the assembled
assemble the deck support.
umbrella-type deck support (10).