Riveted plate connections – name of the joint when two plates are connected end-to-end with two cover plates Two main plates placed end to end and joined by cover plates on both sides form which type of riveted joint?

Introduction / Context:
Riveted joint taxonomy distinguishes lap joints from butt joints. When two plates meet end-to-end (butt) and cover plates are applied, the naming depends on whether the cover is on one side or both sides.

Given Data / Assumptions:

• Two main plates meet end-to-end.
• Two cover plates are provided (one on each side of the joint).

Concept / Approach:
End-to-end plate connections are butt joints. With two cover plates, it is specifically a double-cover butt joint. This arrangement is symmetric and improves load transfer, often allowing higher efficiency than single-cover configurations.

Step-by-Step Solution:
Identify joint geometry → end-to-end plates → butt type.Count cover plates → two → double-cover butt joint.

Verification / Alternative check:
Standard steelwork texts diagram lap joints (overlap of main plates) vs. butt joints (cover plates bridging a gap). The described case matches the double-cover type.

Why Other Options Are Wrong:

• Lap joints involve overlapping main plates, not end-to-end placement.
• Single-cover butt uses only one cover plate.
• Zig-zag/chain descriptors refer to rivet pitch arrangement, not the joint type described.

Common Pitfalls:
Confusing rivet pitch patterns (zig-zag vs chain) with joint category (lap vs butt).

Final Answer:
Double-cover butt joint