Figure 8-57. Ladder bottom section installed

TM 5-5430-209-12

(3) Install splice gussed plate (6) at top of rails (1

and 2). The short sheared edge is the top of the plate.

(4) Insert bolts (4) through bolt holes in the vertical

legs at the top of rails (1 and 2) and plates (6) in that

order. Install nut (5) on each bolt (4) protruding through

the plate (6). Tighten the bolts.

(5) Install lower ladder braces (7 and 8) with

crosstie (9) at the bottom of rails.

(6) The leg with one bolt hole near the end of

braces (7 and 8) is attached at the outside face of the

vertical legs of the rails.

(7) Insert bolts (4) through the second bolt hole in

the rails and braces (7 and 8) in that order. Install nuts

(5) on the bolts (4). Finger tighten the bolts.

(8) Lay two ties (9) on the ground in the form of an

"X" with their center bolt holes in alinement Insert a bolt

(4) through the ties (9). Install a nut (5) on the bolt.

(9) Install ties (9) with bolt head up. Place the

boltholes in the ends of the ties under the bolt holes in

the outstanding legs of braces (7 and 8). Insert bolts (4)

through braces and ties, in that order. Install nut (5) on

each bolt protruding through the ties. Tighten the bolts.

(10)

Assemble middle ladder braces (10 and 1)

with ties (9). Follow the procedure in steps (8) and (9)

above.

(11)

Install braces (10 and 11) on plates (6).

Insert bolts (4) through the inside bolt holes of plates (6)

and braces (10 and 11) in that order. Install nut (5) on

each bolt protruding through the braces. Tighten the

bolts.

c. Assembling Middle and Top Sections.

(1) Middle Section.

(a) Assemble the ladder rails (1 and 2, fig. 8-

58) and steps (3) with bolts (4) and nuts (5).

Figure 8-57. Ladder bottom section installed.

(2) Select bottom end of ladder. Insert 1/2-by 1-

inch bolts (4) through the ends of step (3) and rails (1

and 2) in that order. Install nut (5) on each bolt (4)

protruding through the rails. Tighten the bolts after all

steps are installed.

8-37