Grain Systems PNEG-707GSI - Manual (Page 61)

5. Plenum Roof
PNEG-707 12', 18', 24' and 30' GSI Commercial Tower Dryer 61
Rafter Crossmembers
Install rafter crossmembers between plenum roof rafters as illustrated in Figure 5AL-Figure 5AN .
Snug bolt with 5/16" x 1" hex head bolts and nuts until all are installed, then tighten.
Figure 5AK Install rafter crossmembers as marked.
Figure 5AL Facing dryer from the outside, install rafter
crossmembers as shown.
Figure 5AM Installing rafter crossmembers.
B
D C
A
C
A
B
D
Up
A. Rafter crossmember - long bottom
B. Rafter crossmember - short bottom
C. Rafter crossmember - long top
D. Rafter crossmember - short top