Grain Systems Tanks PNEG-4072A - Manual (Page 118)

Chapter 8: Accessories
Installing Roof Ladder Steps
Roof ladder steps will allow access to roof and manway access.
What You Should Know
Each eave-to-peak ladder step package (E) differs with the diameter of each bin. When installing the
ladder steps, always start from the eave and work up toward the peak, installing the longest step first and
the shortest step last.
NOTE: Use the table at the end of this procedure for part listings and the correct placement of each ladder
step configuration for various bin sizes. See Table 8-1, page 119 .
1. Place the first roof ladder step (B) onto the corresponding roof panel, next to the manway access (G).
NOTE: If roof rings will be installed, roof ladder steps (B and F) will not be installed. Proceed to next
available ladder step.
2. Install flange bolts (A) and install sealing washers (D) between the ladder step (B) and the roof panel
rib. Secure the roof ladder step to the roof panel with two flange nuts (C). Tighten to the recom-
mended torque specifications. See
Bolt Torque Specifications, page 24 .
3. Repeat this procedure for the remaining ladder steps in the eave-to-peak ladder step package (E).
Figure 8-1 Exploded view of a roof ladder step
A 5/16 x 1 in. flange bolt (S-10260) E Eave-to-peak ladder step package (PLS-42496-XX) 1
B Roof ladder step (LS-260-X) 2 F Roof ladder step (LS-260-X ) 2
C 5/16 in. flange nut (S-3611) G Manway access
D Sealing washer (S-3558)
118 Pneg-4072A 72 Ft Diameter 40-Series Bin
1. (-XX) denotes the bin diameter.
2. (-X) denotes the ladder step number.