Question
Download Solution PDFFor large span and heavy gravity loads, which of the following will be economical?
Answer (Detailed Solution Below)
Detailed Solution
Download Solution PDFExplanation:
Truss:
- They efficiently transfer loads through axial forces in members (tension or compression).
- They reduce self-weight compared to solid beams or girders.
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They provide greater stiffness and strength with less material—thus more economical.
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Commonly used in industrial buildings, railway bridges, airplane hangars, etc.
Additional Information
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Beam: Good for short spans; becomes too deep and heavy for long spans, increasing material cost.
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Plate Girder: Used for medium to long spans, but heavier and more expensive than a truss.
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Arch: Structurally efficient but requires horizontal thrust resistance and complex supports, making it less economical in general.
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