To prevent edge shearing of a structural plate, the distance separating the rivet hole center line from the nearest edge, measured relative to the rivet diameter d, should be__________________?
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Answer: C. 1.5 d
Explanation
Structural codes specify a minimum edge distance of 1.5 times the rivet diameter. This spacing prevents the rivet from shearing through the plate edge under high loads. Sufficient surrounding metal is necessary to resist bearing stresses without localized plate failure. Riveted joints rely on friction and shear resistance to transfer loads between structural plates. Edge failure occurs when fastener holes are located too close to the boundary of the member. Nominal rivet diameter serves as the fundamental dimensional basis for all joint spacing rules.
Bridge builders and aircraft manufacturers strictly follow minimum edge distance rules for safety. Violating edge distance guidelines severely compromises the ultimate load capacity of structural joints. Proper rivet layout prevents premature tearing and cracking in steel plate fabrications. A distance equal to d provides insufficient material and leads to premature edge breakout. Values like 1.25 d remain too close to the boundary for heavy structural integrity. Spacings of 2 d are overly conservative though sometimes used in specialized heavy applications.
- Subject
- Engineering
- Category
- Mechanical Engineering
- Topic
- —
- Difficulty
- medium
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