
Chapter 3: Assembling the Tower
6. Assemble a catwalk diagonal (20) along with a catwalk lamination (21) to each side of the main
tower left and right legs (15 and 16) using 1/2" x 1-1/4" flange bolts (2) and 1/2" flange nuts (7).
NOTE:
a. Make sure to position the top flange (facing the tower legs) of the catwalk diagonal (20)
under the top flange of the catwalk lamination (21).
b. The catwalk lamination (21) is applicable only for 20K towers and not for 10K towers.
c. Install nuts (7) to the inside of the leg (15 or 16) flanges.
7. Also assemble a catwalk support brace (22) between the catwalk diagonals (20) as shown using
1/2" x 1-1/4" flange bolts (2) and 1/2" flange nuts (7).
Figure 3-7
Installing the catwalk diagonals to the main tower legs
2
1/2" x 1-1/4" flange bolt (S-9062)
20
Catwalk diagonal
7
1/2" flange nut (S-8506)
21
Catwalk lamination
15
Main tower left leg
22
Catwalk support brace
16
Main tower right leg
PNEG-2328
Grain Bin Eave Towers (30' - 48' Bins)
17