Figure 2-3. Hoist Pier

TM 32-5985-342-14&P

Figure 2-3. Hoist Pier

(5) Refer to figure 2-6. Install tower top

(2) Refer to figure 24, sheets 2 and 3. Use

braces Nos. 7 and 8 (16, 17). Secure with two angle

erection fixture to raise and install three upper tower

braces (12) and four 1/2-inch bolts (13), hex nuts (14),

legs (10) and one upper tower leg (21) to joint braces

and locknuts (15) for each brace.

(17, 24). Secure with four 3/4-inch bolts (11), hex nuts

(12), and locknuts (13) for each leg. Do not torque

(6) Refer to figure 24. Install remaining cable

hardware until upper legs are plumb with lower legs.

braces (15) to tower legs.

d. Upper Brace Installation. Refer to figure 24

(7) Tension all cable braces as follows:

unless otherwise indicated.

(a) Assemble

the

cable

hoist,

(1) Use erection fixture to raise and install

tensioning cable, and dynamometer as shown in figure

one horizontal brace (16), one horizontal brace (23), and

2-7.

two horizontal braces (18). Secure with two 3/4-inch

CAUTION

bolts (14), hex nuts (12), and locknuts (13) for each

Keep tower legs plumb and straight

brace.

to prevent unwanted deflection and

(2) Install four comer braces (26) to upper

prestressing of leg members.

horizontal braces. Secure with two' 1/2-inch bolts (27),

(b) Crank

cable

hoist

until

hex nuts (28), and locknuts (29) for each comer brace.

dynamometer indicates required tension.

Tighten

(3) Install top tower braces Nos. 1 through 4

turnbuckle (33) until dynamometer reading begins to

(5, 20, 22, and 25) to top tower legs. Secure with four

drop. Cable hoist may now be removed.

3/4-inch bolts (14), hex nuts (12), and locknuts (13) for

NOTE

each brace.

The reading on the dynamometer. is

(4) Refer to figure 2-6. Install tower top

one-half the actual tension being

braces Nos. 5 and 6 (19, 11). Secure with two angle

applied, because the cable hoist line

braces(12) and four 1/2-inch bolts (13), hex nuts (14),

is doubled. Multiply readings by two

and locknuts (15) for each brace.

to obtain proper values listed below.

2-7