252 INDEX 



Bent rods, 99-103 



combined with vertical stirrups, 103-105 



points to bend, 105, 106 

 Bond, 27-29, 71-74, 86 

 Broken stone (see stone) 

 Broken stone screenings, 4 



Cement, general requirements, 2 

 Cinder concrete, fireproofing, 6 



weight, 22 

 Coefficient of expansion, concrete, 20 



steel, 24 

 Columns, diagrams, 237 



plain concrete, 167-169 



hooped reinforcement, 171-173 



hooped and longitudinal reinforcement, 173 



longitudinal reinforcement, 169-171 



structural steel shapes, 174, 175 



tables, 210, 211, 212 



tests, 175-184 



value of longitudinal reinforcement, 185 



working stresses, 184, 185 

 Concrete, advantage of combining with steel, 26, 27 



bond with steel, 27-29 



cinder, 6, 22 



compressive strength, 15-18 



consistency, 6 



contraction and expansion, 19, 20 



dry vs. wet, 6 



fireproofing qualities, 20, 21 



general requirements, 1 



modulus of elasticity, 32, 33 



proportioning by mechanical analysis, 7-14 



proportions commonly used, 1 



quantities of ingredients required per cubic yard, 14, 15 



shearing strength, 19 



table of compressive strengths, 17 



tensile strength, 18, 19 



theory of proportions, 7 



unit for proportioning, 6, 7 



waterproofing qualities, 21, 22 



weight, 22 

 Continuous beam, design at supports, 159, 164 



moments in, 130-134 

 Cross-beams (see beams) 



Deflection of beams, 124-128 

 Deformed bars, 22, 23, 27 

 Diagonal tension, 65-68 (see also shear) 

 Diagrams (see Table of Contents) 

 Double-reinforced beams, 157-159 



Economical proportions of beams, rectangular, 128, 129 

 T-beams, 151, 152 



Fireproofing qualities, 20, 21 

 Flexure and direct stress, 241-249 

 Formulas, bond, 73 



columns, 169 



continuous beams for moment, 131, 132 



