Installing the Roof Stairs
Before You Begin
Remove the three truss head bolts on the inside edge of platform where the roof stairs will be attached.
1. Lift and position the assembled roof stairs assembly (Q) on the panel adjacent to the manway hole.
2. Attach the platform mount bracket (39) at the bottom of the roof stair assembly (Q) to the platform
(G) at the eave using the truss head bolts (1) and flange nuts (3), which were removed earlier.
NOTE:
Leave the truss head bolts (1) loose until the roof stair assembly (Q) is centered and
attached to the roof panel (R).
3. Field drill holes on the roof panel ribs and install the panel support brackets (40) in the roof stair
assembly (Q) to the roof panel (R) using the standard bin roof bolts (S) and flange nuts (T).
IMPORTANT:
• The roof stair assembly (Q) should be centered on the panel before field drilling
the holes.
• If two slots in the panel mount bracket align on a roof panel rib,
field drill one
hole in the slot that is closer to the center line of the roof panel rib
.
NOTE:
• Install the standard roof bolts (S) with the bolt head from the inside of the bin.
• As the roof panel narrows near the top, the stair steps may need to be removed to
allow a hole to be drilled.
24
PNEG-2062
12'-156' Diameter Bin Roof Stairs
