Which is a large horizontal framing element that transfers building loads to columns?

Which is a large horizontal framing element that transfers building loads to columns?

• A. Rafter
• B. Beam
• C. Joist
• D. Plate

Answer: (B)

The key idea is a primary horizontal member that carries loads from above and passes them down to vertical supports. A beam is designed to span between supports and resist bending as it takes the weight of floors or roofs, then transfers those loads down to columns or load-bearing walls. This distinguishes it from other members: a rafter is a sloped roof piece; a joist is a smaller, usually horizontal member that supports floor or ceiling loads and rests on beams or walls; a plate is a flat connector rather than the main spanning element. So the large horizontal element that transfers building loads to columns is a beam.

The key idea is a primary horizontal member that carries loads from above and passes them down to vertical supports. A beam is designed to span between supports and resist bending as it takes the weight of floors or roofs, then transfers those loads down to columns or load-bearing walls. This distinguishes it from other members: a rafter is a sloped roof piece; a joist is a smaller, usually horizontal member that supports floor or ceiling loads and rests on beams or walls; a plate is a flat connector rather than the main spanning element. So the large horizontal element that transfers building loads to columns is a beam.