Question:
Which of the following element of a pitched roof industrial steel building, primarily resists lateral load parallel to the ridge?
Which of the following element of a pitched roof industrial steel building, primarily resists lateral load parallel to the ridge?
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Remember:
• Purlins $\rightarrow$ Support roof covering.
• Trusses $\rightarrow$ Carry roof loads.
• Bracings $\rightarrow$ Resist lateral loads and provide stability.
• Purlins $\rightarrow$ Support roof covering.
• Trusses $\rightarrow$ Carry roof loads.
• Bracings $\rightarrow$ Resist lateral loads and provide stability.
Updated On: Jul 23, 2026
- Bracings
- Purlins
- Truss
- Columns
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The Correct Option is A
Solution and Explanation
Concept:
Bracing systems are provided in industrial steel buildings to resist horizontal forces such as wind and seismic loads.
Longitudinal bracings resist lateral loads acting parallel to the ridge, while roof and vertical bracings transfer these loads safely to the foundations.
Step 1: Identify the function of each member.
• Bracings: Resist lateral loads and provide overall stability.
• Purlins: Support roof sheeting.
• Trusses: Carry roof loads.
• Columns: Transfer vertical loads to the foundation.
Step 2: Determine the member resisting loads parallel to the ridge. Lateral loads acting parallel to the ridge are resisted by the longitudinal bracing system. Hence, \[ \boxed{\text{Bracings primarily resist lateral loads parallel to the ridge}.} \] Therefore, the correct option is \[ \boxed{(A)\;\text{Bracings}.} \]
Step 1: Identify the function of each member.
• Bracings: Resist lateral loads and provide overall stability.
• Purlins: Support roof sheeting.
• Trusses: Carry roof loads.
• Columns: Transfer vertical loads to the foundation.
Step 2: Determine the member resisting loads parallel to the ridge. Lateral loads acting parallel to the ridge are resisted by the longitudinal bracing system. Hence, \[ \boxed{\text{Bracings primarily resist lateral loads parallel to the ridge}.} \] Therefore, the correct option is \[ \boxed{(A)\;\text{Bracings}.} \]
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