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 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
When the maximum distance between centres of two adjacent rivets connecting the members subjected to either compression or tension exceed the maximum pitch, then the additional rivets which are not subjected to the calculated stress are used, and are known as
