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Académie
Roofing
NRCA ProCertification - Metal Panel Installer
Through-Fastened Panel Systems
Vérification des connaissances
Through-Fastened Panel Systems
Vérification des connaissances
Vérification des connaissances
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How many screws per rib are required at the eave and ridge purlin lines on a through-fastened panel system?
A
One screw every other rib
B
Three screws per rib
C
Two screws per rib
D
One screw per rib, same as the field
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