STRENGTH REQUIREMENTS FOR ROUND CONDUIT 



749 



LOADING CONDITION 



FMOOO LBS 



STEEL PLATE -^ 

 8.5"x 8.5'x I" 0^ 



DRY SAND 



ALUMINUM TUBE 

 12" LONG 



STEEL PLATE 



Wt^tw^ 



Fig. 10 — Moment distribution in thin-walled tube resting on steel plate and 

 covered with drv sand. 



