Riveted joints: minimum edge distance to avoid tearing of the plate Given d = diameter of the rivet hole. Select the minimum required distance from the rivet-hole centreline to the nearest plate edge to prevent edge tearing. Choose the correct value.

Given
• Riveted plate; to avoid tearing at the plate edge.
• d = rivet-hole diameter.

Concept
The minimum edge distance (also called margin) commonly adopted in machine design standards is 1.5 d. This ensures adequate net area between the hole and edge to resist tensile tearing.

Why not larger or smaller?
• If < 1.5 d, the ligament is weak → edge tearing likely.
• Values like 2 d or 2.5 d are safe but unnecessarily increase plate size and cost.

Final Answer
1.5 d