Compression Members MCQ with answer and solution

Concept

Tension vs Compression Members

Formula

No formula applicable

Step-by-step solution

Identify that a tie is designed to resist tension (pulling forces), whereas struts, rafters, and booms are designed to resist compression. Thus, a tie is not a compression member.

Explanation

A tie is a structural member designed to resist tension (pulling forces) rather than compression (pushing forces). While members like struts, rafters, and booms are pushed together under compressive loads, a tie is pulled apart to maintain stability in a structure.

Shortcut

Remember "TIE" is pulled (Tension), like tying a knot or pulling a necktie, while struts, rafters, and booms push/support loads (Compression).

Common mistake

A common mistake is confusing a "tie" with a compression member or assuming that terms like "strut" or "boom" represent tension members, leading students to select strut or boom instead of recognizing that a tie exclusively resists tension forces.