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Assembling Purlin Number 4
Purlin number 4 is located forth purlin from the eave.
Before You Begin
Place two roof rafters on the ground with roof panel holes facing up.
NOTE:
Temperature cables may also be installed at this location, to determine if temperature cable brack-
ets will be needed, see
About Temperature Cable Brackets and A-Frame Assemblies, page 96
.
What You Should Know
The A-frame roof rafter section consists of two roof rafters identified as the left-hand roof rafter (A) and
the right-hand roof rafter (C).
There are also two different purlin clips, a left purlin clip (E) and a right purlin clip (D). The left purlin clip
has seven holes, compared to the right, which has six holes along the purlin and purlin clip mating
surface.
NOTE:
The seventh hole located in the center of the left purlin clip (E) is for identification purposes only.
No hardware is used in this location.
1. Attach a right purlin clip (D) and a left purlin clip (E) to the right-hand roof rafter (C) and install three
flange bolts (F) and three flange nuts (I).
2. Attach a right purlin clip (D) and a left purlin clip (E) to the left-hand roof rafter (A) and install three
flange bolts (F) and three flange nuts (I).
3. Install the purlin (H) to the right purlin clip (D) and the left purlin clip (E) located between each roof
rafter. Install twelve flange bolts (B) and twelve flange nuts (G), securing the purlin to the purlin clips.
NOTE:
Ensure that the orientation of the purlin is correct, the roof panel holes are facing up, and the
notch in the purlin is facing the right-hand roof rafter (C).
4. After all purlins are installed in the A-frame, tighten hardware to the recommended torque specifica-
tions. See
Bolt Torque Specifications, page 28
.
PNEG-4472
72 Ft Diameter Z-Tek Bins
103
Содержание 40-SERIES
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