Riveted Joints — Patterns A joint in which the number of rivets decreases from the innermost row to the outermost row is called what type of riveted joint?

Introduction:
Riveted joint efficiency and load flow depend on the arrangement of rivets. Different patterns balance shear and bearing while limiting tearing and cracking paths.

Given Data / Assumptions:

• Multi-row riveted lap or butt joint.
• Rivet count reduces from center (innermost) toward the edges (outermost).

Concept / Approach:
When rivet numbers taper along rows so that the pattern forms a diamond shape, the joint is termed diamond riveted. This layout tries to distribute stresses more uniformly and shorten potential tear paths.

Step-by-Step Solution:
Identify the pattern: central row has the most rivets.Outer rows have progressively fewer rivets.Visual layout resembles a diamond; therefore, the joint is diamond riveted.

Verification / Alternative check:
Compare with chain (aligned columns) and zig-zag (staggered but constant count) to see the distinguishing reduction in count outward.

Why Other Options Are Wrong:
chain riveted: rows directly opposite each other with constant count.zig-zag riveted: staggered arrangement but no systematic reduction outward.none of these: incorrect because the described pattern matches the named diamond riveted joint.

Common Pitfalls:
Confusing stagger (zig-zag) with taper (diamond); these are separate characteristics.

Final Answer:
diamond riveted