40 NOTKS ON I'l \T! CIKDKH DESIGN 



by V than theoretical considerations determine, to allow 

 for material removed by >uch facing. 



PROBLEMS 



8rt. Determine th< I the end MilTeners for t ! girder oi 



.". using two ; nijrles, one on the outer and our on tin- inner 



edgC of tile sol,- plate. 



8/. Assuming the wall plate to U- IS" long for I itr. ". determine 

 .ml spacing of the intermediate stifTeners lor th- girder. 



8r. DfMfrniiiir the sizes of the stiffened af the points of eoiKen- 

 t rated loading for the girder of Fig. 86. 



&/. Determine the sizes and spacing of the intermediate stifTen. ;s 

 for the girder of Fig. 86. 



ART. 9. SPLICES FOR WEB PLATES 



\Vel>s of plate girders shouM not be spliced mile n. 

 sar\ . but as wide plates cannot be procured in one 

 neral. for girders over 60 ft. long, splicing for 

 girders is unavoidable. The manufacturers furnish li>ts 

 of the inaxiinuin dimensions of their plates. The number 

 and location of the \\el> -plices should be determined by a 

 combined consideration of the cost and resulting efficiency 

 of the possible arrangements. The splice should he de- 

 signed with the idea of transferring the stresses in t he 

 web across the cut in the most direct manner possible, 

 JIIM as in plate girder design as a whole the effort should 

 be made to have the stresses developed as indicated !>y 

 the theory of flexure for solid beams. Let it be require* 1 

 to >plice the web at the center of the girder which has 

 an effective length of 80', and a composition as shown in 

 Fig. 9a. 



The girder has been designed on the assumption that 



