
Chapter 6: Installing Winding Bin Stairs (Intermediate to Bin Bottom)
Figure 6-4
Installing the 5–step stair section
2
5/16 x 3/4 in. flange bolt (S-6606)
49
Bin stair handrail post (WBS-0004)
3
5/16 in. flange nut (S-3611)
AC
4–step stair section
48
Inside stinger support (WBS-0088)
AD
5–step stair section
IMPORTANT:
As the stair sections are being
installed, make sure that any offset
(AF) between the stringers is consis-
tent throughout the winding bin stair
assembly.
5. Align the top end of the last 5-step stair section (AE) to the bottom of the previous 5–step stair sec-
tion (AD) and secure using flange bolts (2) and flange nuts (3).
NOTE:
Hand-tighten the flange bolts (2).
6. Align the bottom end of the 5-step stair section (AE) to the handrail post (49) and the inside stringer
support (48) and secure using flange bolts (2) and flange nuts (3).
NOTE:
Hand-tighten the flange bolts (2).
PNEG-2077
TopDry – Platforms and Bin Stairs
71