Grain Systems Tanks PNEG-4036 User Manual
Page 82
11. Roof Assembly
82
PNEG-4036 40 Series 33' and 36' Diameter Bins
Roof Assembly for 33' and 36' Roofs with Standard Peak Cap
NOTE: For 36' diameter hopper tanks (NCHT), refer to special instructions included in the
36' NCHT manual.
After assembling the lower center collar “Z” ring, build a roof center support to hold it in place at the proper
height, as shown in
. A simple structure composed of a sturdy cross-arm
attached to a pole and supported by a platform or scaffolding in the center of the bin will be sufficient.
Place eave clips inside the bin wall to maintain an opening around the top of the sidewall. This allows
condensation, which normally collects on the underneath side of the roof panels, to flow freely to the
outside of the bin, thus avoiding possible grain spoilage.
Now you are ready to place the first group of roof sheets in place as shown in
.
These eight (8) panels will keep the peak assembly centered. Continue placing roof sheets (with a
consistent lap pattern) at intervals around the bin to distribute the weight evenly. DO NOT TIGHTEN
BOLTS UNTIL THE ROOF IS COMPLETELY ASSEMBLED. Once all roof sheets are in place and the
bolts are tightened, the center ring and flashing assembly may be placed on top of the panels. Place a
flashing seam over a “Z” collar seam to ensure correct alignment.
Refer to Figure 11E on Page 83.
The
peak cap and slide rods may then be put in place to finish the roof. On stiffened tanks, location of the
manway panel and roof ladder in relation to the stiffeners is crucial for proper installation of the
ladder systems. PNEG-1420 and PNEG-1738 for flat bottomed stiffened tanks. These manuals are
included with the ladder and safety cage packages.
Figure 11D
NOTE: Be sure to install ladder rungs and safety steps as you
assemble roof panels. When assembling such pieces as roof
ladders, remove neoprene washer from bolt and place between
the roof and the piece being added. This will ensure a more
protective seal against moisture.
Typical all eave clips
5/16" x 1" Bin bolt and flange nut
Roof ladder support
channel splice detail
NOTE: The parts pointed out on this page
are listed on