Assembling the 4-Step Stairs Section
1. Place a left 4-step stringer section (61) and a right 4-step stringer section (62) at a distance and
assemble the four stair steps (34) in between using flange bolts (2) and flange nuts (3).
NOTE:
• Install the flange bolts (2) from the outside of the stringer sections and flange nuts (3)
on the inside.
• Place the stringers with flanges at the bottom and towards the inside.
Figure 2-2
Assembling the 4-step stair section
2
5/16 x 3/4 in. flange bolt (S-6606)
61
Left 4-step stringer section (RFS-0015)
3
5/16 in. flange nut (S-3611)
62
Right 4-step stringer section (RFS-0016)
34
Stair step (WBS-0007)
2. Repeat the above step to assemble the multiple sets of 4-step stair sections (if required).
PNEG-2062
12'-156' Diameter Bin Roof Stairs
17
