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Reg. 183
SHELLS


Maximum Pitch of Rivets in longitudinal joints

The maximum pitch of the rivets in the longitudinal joints of boiler shells shall be :-

C x T + 1.625 = maximum pitch in inches Eqn. (11)

Where
T = the thickness of the shell plate in inches.

C is a co-efficient as given in the following table : -

Number of Rivets Per pitch Co -efficient for Lap joints Co-efficient for single Butt- strapped Joints Co-efficient for double Butt-strapped joints
1
2
3
4
5
1.31
2.62
3.47
4.14
-
1.53
3.06
4.05
-
-
1.75
3.50
4.63
5.52
6.00
 
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Message from Chairman of Central Boilers Board About Central Boiler Board History of Indian Boiler Regulations Foreword Contents Chapter Wise Contents Regulation Wise List of Amendments
Indian Boilers Act 1923 Ibr Forms Home Search Help Contact Us