58 NOTES ON PLATE-GIRDEB DKSIGN 



18 rivets in tin- two lines nn and have part of them 

 2} an.l part 3'' apart. 



Fig. 11 (e) shows how tin forces act on a rivet con- 

 necting tin- outstanding Ic^s of tlic connect inn an-l 

 the Hoorl)cani wel>. 



The bearing value of a field rivet in the I met thickn- 

 stitYener leg is C>300. 



The shearing value of a field rivet i- .~>77<>. 



For the maximum stringer load the number of rivetl 



97 800 

 required for shear** .1-.. =16.95 or 18, which would enable 



two lines of rivets to be used, if part of the number are 

 2j" apart . 



The rivets must also be examined for bearing on the 

 floorbeam web when both stringers are bringing their com- 

 bined maximum loads at this connection. The bearing 

 value of a field rivet in the}" floorbeam Web =8400 Ibs. 



The number of rivets required- ' * ( j =15.6 or Hi. 



which is one less than the number which are required for 

 maxiihum shear on the rivets for one stringer loaded. 



The number of rivets by the second computation i< 

 usually, though not in this case, the larger and In-nee the 

 governing one. The rivets should be located on the lines 

 oo in (c) of Fig. 11. The two fillers under the connection 

 angles and on the stringer web must be J" thick and M" 

 wider than the angle leg. They should then fore be 9" x}" 

 flats. 



The requirement of two lines of rivets for the ] of 

 the connection angle against the stringer web demands a 



