INDEX 253 



deflection, 126, 127 



economical depth of T-beams, 151 



flexure, ultimate loads, 58-61 



working loads, 53-56 

 homogeneous beams, 39-41 

 inclined rods, 102, 104-106 

 rectangular reinforced concrete beams, 112, 113 

 shear, 64 



T-beams, 145, 146 



transverse spacing of reinforcement, 107 

 vertical stirrups, 93, 94, 95, 98, 104 



Girders (see beams) 

 Gravel, 5, 6 



screenings, 4 



Hooks, 29 



Horizontal bars bent up for web reinforcement, 99, 103 



Inclined tensile stresses, 65-68 



Inner forces in a homogeneous beam, 39-46 



Mechanical analysis, 7-14 

 Modulus of elasticity, defined, 29 

 method of determining, 29-33 



Notation, 111, 112, 126, 127, 151, 158, 160 



Plain concrete beams, 49-52 



Properties of the material, 1-38 



Proportioning concrete, by mechanical analysis, 7-14 



theory of, 7 



unit for, 6 



Ratio of the moduli of elasticity, 29-34 

 Rectangular beams (see beams} 



Reinforced concrete, advantages in the combination of concrete and steel, 

 26, 27 



arrangement of beams and girders, 142, 143 



beams, 26, 34, 39-166 



beams with steel in top and bottom, 59-159 



behavior under tension, 35, 36 



bending and direct stress, 241-249 



bond between concrete and steel, 27-29 



columns, 26, 27, 34, 167-186, 210, 211, 212, 237 



compared with terra-cotta for fireproofing, 21 



diagrams, 223-240 



double-reinforced beams, 59-159 



fireproofing qualities, 20, 21 



ratio of the moduli of elasticity, 29-34 



rectangular beams, 39-134 



repetition of stress, 37 



shrinkage and temperature stresses, 36, 37 



slabs, 135-140, 197-199, 205-229 



tables, 193-213 



T-beams, 143-146, 202-207, 233, 234 



waterproofing qualities, 21, 22 

 Reinforcement (see steel) 

 Repetition of stress, 37 

 Restrained beams, 129, 130 



