Identification of diamond riveting vs. zig-zag riveting\n\nIn a riveted joint, when adjacent rows are staggered so that each rivet lies midway between two rivets of the opposite row, the joint configuration is called:

Introduction / Context:
Riveted joints are described by how rivets are arranged. Correct terminology is important for communication in fabrication drawings and strength calculations.

Given Data / Assumptions:

• Two or more rows of rivets.
• Rivets in adjacent rows are offset so each rivet lies midway between two in the other row.

Concept / Approach:
When rows are offset, the pattern is called zig-zag (or staggered) riveting. Diamond riveting, by contrast, refers to a pattern where the number of rivets per row tapers toward the ends, forming a diamond-shaped group.

Step-by-Step Solution:
Staggered rows → zig-zag riveting.Aligned rows directly opposite → chain riveting.Tapered group forming a diamond outline → diamond riveting.

Verification / Alternative check:
Textbook sketches of joint patterns clearly distinguish zig-zag (offset) vs. chain (aligned) vs. diamond (tapered grouping).

Why Other Options Are Wrong:
Diamond riveted describes a different geometric grouping; chain riveted requires rivets to be in the same transverse line; lap riveted only describes joint type, not the row pattern; “bypass riveted” is not standard terminology.

Common Pitfalls:
Using “diamond” loosely for any non-aligned pattern; confusing row staggering with group shape.

Final Answer:
zig-zag riveted (staggered riveting)