Minimum pitch (spacing) of rivets in one row as per IS 800:1984 According to IS 800:1984 recommendations for riveted joints, the minimum pitch of rivets in a row should not be less than how many times the rivet diameter?

Introduction:
Proper rivet pitch ensures adequate load distribution, prevents plate tearing, and allows room for driving or forming heads. Codes prescribe minimum spacing to safeguard against joint weakening and excessive stress concentrations.

Given Data / Assumptions:

• Riveted steel plate or built-up member following IS 800:1984.
• Pitch refers to center-to-center distance of adjacent rivets along a row.
• Diameter denotes nominal rivet shank diameter.

Concept / Approach:

Minimum pitch limits are set to avoid plate splitting and to maintain adequate net section. IS 800:1984 recommends a minimum pitch of 2.5 times the rivet diameter in a row, with higher values often required for practical considerations such as edge distances, stagger, and hole tolerances.

Step-by-Step Solution:

Verification / Alternative check:

Design handbooks reflecting IS 800:1984 and traditional riveted practice corroborate the 2.5 d minimum spacing for durability and constructability.

Why Other Options Are Wrong:

2.0 d may be too close, risking tearing; 3.0 d or 4.0 d are acceptable but not the minimum; 1.5 d is clearly inadequate.

Common Pitfalls:

Ignoring edge distance limits; not accounting for hole oversize; using uniform pitch without checking net-section efficiency.

Final Answer:

2.5