Grain-systems Tanks PNEG-4075G User Manual download pdf (Page 101)

Chapter 7: Roof Assembly

Figure 7-24 Recommended lifting points for a Double A-frame section

A Purlin clip

The A-frame rafter section has two configurations: with X-bracing and without. The number of A-frame

rafter sections with X-bracing depends on which size bin is being constructed.

DANGER

All lifting should be performed by a certified crane operator with prior bin

construction experience. Never lift during windy conditions.

General Guidelines:

• Construct the A-frame sections on flat ground or blocking.

• Install the temperature cable brackets at the same time you assemble the A-frame sections.

• Always be aware of the orientation of each part prior to assembling.

• Use the correct hardware for the part being assembled. Never substitute hardware.

• Always ensure hardware is tightened prior to lifting.

• Always practice safety when assembling rafter sections. Be aware of others around you when

moving long A-frame sections.

• Use evenly distributed connection points of support when lifting.

• Before attempting a lift, adjust each lifting cable to achieve the appropriate angle needed (approxi-

mately 30 degrees).

• Assemble the A-frames with X-bracing last, so that they can be easily accessed to be lifted into place

first.

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Grain-systems Tanks PNEG-4075G User Manual Page 101