Attachment locations of purlins to rafters – Grain Systems Tanks PNEG-4054 User Manual
Page 90
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Attachment Locations of Purlins to Rafters
Purlins are horizontal members between the rafters that give support to the roof structure. The length of
the purlin determines its location on the A-frame assembly.
The following reference depicts a completely assembled A-frame roof rafter section with X-bracing
installed. For more information, see the following sections:
Assembling Purlin Number 1, page 95
,
bling Purlin Number 2, page 93
, and
Assembling Purlin Number 3, page 91
Figure 7-12 Location of purlins for a 54 ft (16.46 m) diameter bin
A
Location of purlin number 1 (CTR-0406)
C
Location of purlin number 3 (CTR-0409)
B
Location of purlin number 2 (CTR-0408)
90
Pneg-4054 54 Ft Diameter 40-Series Bin
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