When the diameter of the rivet holes in the longitudinal joints of a boiler is not known, the diameter and cross-sectional area of rivets, after driving, may be ascertained from Table X-1, or by cutting out one or more rivets in the body of the joint.
Table X-1
Sizes of Rivets Based on Plate Thickness
Thickness of plate............................. | 1/4" | 9/32" | 5/16" | 11/32" | 3/8" | 13/32" |
Diameter of rivet after driving............ | 11/16" | 11/16" | 3/4" | 3/4" | 13/16" | 13/16" |
Thickness of plate............................. | 7/16" | 15/32" | 1/2" | 9/16" | 5/8" | . . . |
Diameter of rivet after driving........... | 15/16" | 15/16" | 15/16" | 1-1/16" | 1-1/16" | . . . |
N.Y. Comp. Codes R. & Regs. Tit. 12 §§ 14-10.11