RIVETED JOINTS 



13 



In each single row the 

 rivets are spaced uni- 

 formly, although the uni- 

 form spacing in one row 

 may be different from 

 that in another row. The 

 uniform spacing, meas- 

 ured from, the center of 

 one rivet to the center 

 of the next one in the 

 same row, parallel to the 

 edge of the plate, and in 

 the row in which the 

 rivets are most widely 

 spaced, is called the pitch. 



By examining the dia- 

 grams it can be seen that 

 there is in every case a 



FIG. 5. Staggered Double-Riveted Lap Joint 



FIG. 6. Single-Riveted Two-Strap Butt Joint 



FIG; 7. Single-Riveted Single-Strap Butt Joint FIG. 8. Double-Riveted Two-Strap Butt Joint 



repeating uniformity in the 

 grouping of the rivets along 

 the joint, so that the joint may 

 be divided by lines perpendicu- 

 lar to the edge, into sections 

 which are in every respect 

 alike. These are called repeat- 

 ing sections, and in computing 

 the strength of the joint we 

 may compute the strength of 

 one repeating section and 



FIG. 9. Triple-Riveted Two-Strap Butt Joint 



