ECCENTRIC RIVETED CONNECTIONS 



'53 



and the resisting moment exerted by each rivet will vary as the square 

 of the distance of the rivet from the center of gravity of all the rivets. 

 Now, if a is taken as the resultant shear due to bending moment in 

 a rivet at a unit's distance from the center of gravity, we will have the 

 relation 



M = a (d* + d,* + d' + d* + dj) 



and 



M 



(79) 



The remainder of the calculations are shown in Fig. 79. The re- 

 sultant shears on the rivets are given in the last column of the table 



Direct Shear S = 20000 * 5 

 Moment = OOOO.x3 = 



4000 1 bs- 

 in- Ibs- 



Where a = Moment shear on rivet 3 

 Ibs- 



M = Shear doe to Moment. 

 S = Shear due to Direct Load. 

 R = Resultant Shear . 



O 40OO 8000 12000 



FIG. 79. 



and are much larger than would be expected. 



The force and equilibrium polygons for the resultant shears and 

 load P , drawn in Fig. 80, close, which shows that the connection is in 

 equilibrium. - 



