314 GRAPHICAL METHODS. Art. 157. 



To find the shear graphically, take the necessary moments 

 from the equilibrium polygon. The moment of the loads on the 

 span, about B, divided by AB, will give the reaction at A. The 

 moment of the loads in the panel, about the right hand end of the 

 panel, divided by the panel length, will give the load at the left 

 end of the panel. 



For stringers and deck plate girders it is simplest to find, by 

 trial, the position of the loads giving maximum shear at any 

 point. 



f LEASE RETURN TO 

 DFPT. of APPLIED MECHANICS, 



