Art. 90. EQUATIONS FOR VARIOUS BEAMS. 



/?, 



153 



Fig. 112. 



// = 4+8/7 +3 n 



or ,- 



or 



ft,kl of/oac/, or 

 for 



-QJaJ-B orf^l otC 



x =x 



r? spas? A3 



=/- Span AB 



Fig. 113. 



-k r 2 r )=M r when 



