Grain Systems Tanks PNEG-4078 - Manual (Page 77)

Chapter 7: Roof Assembly
Table 7-1 A-frame installation sequence and temperature cable locations for 78 ft diameter bin
A-frame number Rafter Number Temp Cable Number Radius Location
A1
R1 — —
R2 T13 28.6 ft
A2
R11 T7 28.6 ft
R12 — —
A3
R21 — —
R22 T11 28.6 ft
A4
R15 — —
R16 — —
A5
R5 T5 14 ft
R6 — —
A6
R9 — —
R10 — —
A7
R23 — —
R24 — —
A8
R19 T3 14 ft
R20 T10 28.6 ft
A9
R3 — —
R4 T14 28.6 ft
A10
R17 T9 28.6 ft
R18 — —
A11
R7 — —
R8 T6 28.6
A12
R13 T2 14 ft
R14 T8 28.6 ft
A13
R25 T12 28.6 ft
R26 T4 14 ft
NA Attach to center collar T1 5 ft
NOTE: A-frames labeled “A1” through “A5” have X-bracing and are installed first. A-frames labeled “A6”
through “A13” are standard A-frames. The empty spaces that are not labeled must have purlins
installed between the rafters after all the A-frames are secured. The numbers reflect the recom-
mended installation sequence of the A-frame assemblies.
Table 7-2 Starting lengths for temperature cables for 78 ft diameter bins
Length from the center collar 226.7 in. (575.82 cm)
Length from 14 ft diameter location 166.8 in. (423.67 cm)
Length from 28.6 ft diameter location 62.6 in. (159 cm)
The temperature cable lengths in the chart above are the distances from where the temperature cable
attaches to the rafter or the center collar to the top ring. To calculate the correct temperature cable length,
add 32 inches for each bin ring to the starting length. Temperature cables must terminate above any
unload equipment and be secured in place with twine. DO NOT allow cables to become tangled in unload
equipment.
Pneg-4078 78 Ft Diameter 40-Series Bin 77