Which statement about load transfer in a truss system is accurate?

Which statement about load transfer in a truss system is accurate?

• A. A truss transfers loads primarily through walls.
• B. A truss system uses triangulated members to carry loads to supports.
• C. A truss cannot span long distances.
• D. A truss is a type of load-bearing masonry.

Answer: (B)

The key idea here is how a truss carries loads. A truss uses a network of triangulated members that connect at joints, and these members mainly carry loads as axial forces—tension in some members and compression in others. When a load is applied, the joints distribute that force through the triangles, turning it into push/pull along the length of each member and guiding it toward the supports. This triangulated geometry makes the structure stable and efficient at transferring loads without relying on bending of members. That’s why the statement describing a truss as using triangulated members to carry loads to supports is the best fit. It captures the essential mechanism: forces flow through the members along their lengths to the supports, not primarily through walls. It also implies why trusses can span long distances—the triangular network distributes load efficiently across a wide frame. The other statements miss the core behavior: loads aren’t mainly transferred through walls, trusses can span long distances, and a truss is not a type of load-bearing masonry.

The key idea here is how a truss carries loads. A truss uses a network of triangulated members that connect at joints, and these members mainly carry loads as axial forces—tension in some members and compression in others. When a load is applied, the joints distribute that force through the triangles, turning it into push/pull along the length of each member and guiding it toward the supports. This triangulated geometry makes the structure stable and efficient at transferring loads without relying on bending of members.

That’s why the statement describing a truss as using triangulated members to carry loads to supports is the best fit. It captures the essential mechanism: forces flow through the members along their lengths to the supports, not primarily through walls. It also implies why trusses can span long distances—the triangular network distributes load efficiently across a wide frame. The other statements miss the core behavior: loads aren’t mainly transferred through walls, trusses can span long distances, and a truss is not a type of load-bearing masonry.