19
SECONDARY Method
Use this method only when there is not enough slack in the RIB
material to allow for an additional twist. ROTATE “A” and “B” ends
only 90° - 180° from flat before installing SPM
®
FSR Spine.
SPM
®
FSR Ribs should be installed as tight as possible.
Excessive play in the overall system could allow components
to release during failure.
SPM
®
FSR Rib
SPM
®
FSR Spine
Rotate 90°-180°
(Common on 3” & 4” Pipe)
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