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STEEL REINFORCEMENT 



This type of reinforcement provides a positive tie, or 

 junction, between beams and at the intersection of beams, 

 girders, and columns, insuring against failure at these points 

 by providing resistance to shear and to failure by horizontal 



FIG. 13 



or oblique tension cracks. The frame may be used with any 

 type of reinforcement, and is placed at the junction of 

 beams with girders, as shown in Fig. 13, and at the inter- 

 section of the girder and column supports. 



MISCELLANEOUS SYSTEMS 



Brayton System. The system of reinforced concrete 

 known as the Brayton is illustrated in Fig. 14. The main 

 reinforcing member is a standard, rolled-steel, I-beam 

 section, and the entire reinforcement, including the steel- 

 work, is put together in a manner similar to the usual-steel- 

 frame construction. The structural-steel beams that form 

 the reinforcement carry the dead load of the centering and 

 the weight of the concrete. Thus, shores need not be used 

 in the erection. 



The I-beam a forming the main reinforcing member of the 

 concrete beam is shown in view (a). As shown at b, the 

 stirrups extend beyond the top flange of the I beam in the 

 form of loops, and are either riveted through the web or 

 fastened by clipping them to the lower flange, as indicated 

 in (6). The I beam is supported on a column built up of 

 angles and provided with brackets d. The slab rods are 



