Installing the 6–hole intermediate purlins, Chapter 7: roof assembly – Grain Systems Tanks PNEG-4105 User Manual
Page 117
Installing the 6–Hole Intermediate Purlins
Intermediate purlins must be installed to connect each A-frame roof rafter assembly together. The inter-
mediate purlins at 28.4 ft radius (purlin 4), 35.3 ft radius (purlin 3), 42.2 ft radius (purlin 2) and 47.8 ft radius
(purlin 1) connecting each A-frame roof rafter assembly are unique than the other intermediate purlins
installed at other diameters of the roof.
Before You Begin
All A-frame roof rafter assemblies must be installed and secured to both the center collar and the eave
brackets.
1. Install the intermediate purlin (A) to the purlin clips (B and D) located outside of each A-frame roof
rafter assembly (E).
2. Install six flange bolts (C) and six flange nuts (F) to each end of the purlin (A) securing the intermedi-
ate purlin to the purlin clips.
3. Tighten the hardware to the recommended torque specifications. See
Figure 7-32 Exploded view of the 6–hole intermediate purlins
A
Purlin
D
Left Purlin clip (CTR-0099)
B
Right Purlin clip (CTR-0100)
E
A-frame roof assembly
C
1/2 x 1-3/4 in. flange bolt (S-10252)
F
1/2 in. flange nut (S-10253)
NOTE: Purlin part numbers vary with location.
After You Finish
Repeat this procedure only for the 6–hole intermediate purlins radius of the roof assembly.
Pneg-4105 105 Ft Diameter 40-Series Bin
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