The gross diameter of a rivet is the diameter of_____________
Rivet Diameter Definition Explained
The question asks to define the "gross diameter" of a rivet.
Analyzing Rivet Diameters
Understanding the different diameters associated with rivets is crucial:
- Nominal Diameter: This is the diameter of the rivet shank before driving. It's the standard size designation.
- Rivet Hole Diameter: This is the diameter of the hole drilled or punched into the materials being joined. It's typically slightly larger than the nominal rivet diameter to allow for easy insertion.
- Gross Diameter (or Manufactured Diameter): This refers to the diameter of the rivet shank after it has been fully driven and formed. When driven, the rivet material expands to fill the hole, creating a tight, permanent joint. The head formation also slightly increases the overall dimensions.
Conclusion on Gross Diameter
Based on the analysis:
- Option 1 (cold rivet before driving) refers to the nominal diameter.
- Option 2 (rivet after driving) accurately describes the expanded and formed size, which is the gross diameter.
- Option 3 (rivet hole) is the diameter of the hole, not the rivet itself after forming.
Therefore, the gross diameter of a rivet is the diameter of the rivet after driving.
Important Questions from Riveted Connections
As per IS 800, the efficiency of a riveted joint having the minimum pitch is:
As per IS 800, the minimum pitch of rivets in a row is recommended as:
The distance between the centre of two consecutive rivets measured along a row of rivets is known as ______.
If the working stress in bearing in power driven rivets is 300 N/mm2 and a double riveted double cover butt joint is used to connect plates of 12 mm thick, then the strength of rivet in bearing is
(Given: The nominal diameter of rivet = 22 mm)
As per IS:800-1984, the minimum pitch of rivets in a row is recommended as the diameter of the rivet times
