120 REINFORCED CONCRETE CONSTRUCTION 



required if they can be bent up at the proper points. The unit bond along 

 the seven rods at end of beam will be but 33 per cent greater than the 

 allowable, which seems reasonable for a beam with this number of rods bent 

 up in two planes. 



The rods may be bent up in the following order. 



or< 



10 



Fig. 57 shows the construction necessary to locate the points where the rods 

 may be bent. The drawing shows that the rods can be bent at the desired 

 points to take all the diagonal tension and also that the longitudinal spacing 



' 



A A 



of these rods does not exceed three-fourths the depth of the beam. The 

 length I' should equal nearly 50 diameters (from table) or 



l' = (50) (9/16) =28 in 



This length cannot be obtained with the bars bent up nearest the support. 

 These bars will be provided with a hook as shown. It would be good design 

 to add one or two stirrups, as shown, to aid diagonal tension at the end of 

 beam where the stresses have a greater inclination with the horizontal. 



If stirrups were employed, their diameter and spacing would be deter- 

 mined by the method of Art. 42. 



