Difficulty: Easy
Correct Answer: Incorrect
Explanation:
Introduction / Context:
An overhanging beam is commonly encountered in structural analysis. Clarifying its definition helps in selecting the proper boundary conditions and internal force diagrams.
Given Data / Assumptions:
Concept / Approach:
A beam is termed “overhanging” if it projects beyond a support on one or both sides. The presence of even a single overhang (on one side only) qualifies it as an overhanging beam. Overhanging beams differ from pure simply supported beams and cantilevers in reaction and moment distributions.
Step-by-Step Solution:
Define: overhanging beam → extension beyond a support.Case 1: Overhang on one side only → still an overhanging beam.Case 2: Overhangs on both sides → also an overhanging beam, but not mandatory.Therefore, the claim that both sides are required is incorrect.
Verification / Alternative check:
Textbook examples show single-side overhangs producing hogging moments near the support and sagging moments on the span, confirming the classification.
Why Other Options Are Wrong:
“True only for cantilevers” confuses cantilever (fixed end) with overhangs; “Depends on load position” is irrelevant to the definition; “True only for propped cantilevers” is unrelated.
Common Pitfalls:
Assuming symmetry is required; mixing the term with cantilevered members fixed at one end.
Final Answer:
Incorrect
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