SC Pre-Engineered Metal Buildings Practice Questions - South Carolina Pre-Engineered Metal Buildings Contractor Examination Exam

A portal frame is specified in a sidewall bay that also has a large overhead door primarily because:

The door hardware requires a rigid frame at every bay Portal frames replace all columns in that bay OSHA requires a portal frame at every personnel door X-bracing cannot cross the opening, so the portal frame provides the missing longitudinal stiffness

Correct Answer:

X-bracing cannot cross the opening, so the portal frame provides the missing longitudinal stiffness

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