Question

Which structural member is primarily designed to resist loads applied laterally to the member's axis?

• A. Column
• B. Beam
• C. Slab
• D. Footing

Hint:

Think: Columns = compression (vertical), Beams = bending (horizontal loads).

Answer 1

The Correct Option is B

Concept: Structural members are designed based on the type of loads they resist. Loads can be axial (along the axis) or lateral (perpendicular to the axis).

• Columns resist axial compressive loads
• Beams resist loads applied perpendicular (lateral) to their axis
• Slabs distribute loads to beams
• Footings transfer loads to the ground

Step 1: Understand lateral loads.
Lateral loads act perpendicular to the length (axis) of a structural member, causing bending.
Step 2: Identify the appropriate member.
Beams are specifically designed to:

• Resist bending moments
• Carry transverse (lateral) loads
• Transfer loads to columns or supports

Step 3: Analyze the options.

• Column – axial load member
• Beam – resists lateral loads (correct)
• Slab – surface element distributing loads
• Footing – foundation element

Step 4: Conclusion.
Thus, beams are primarily designed to resist loads applied laterally to their axis.