INDEX 



301 



Reinforced concrete retaining wall, 



290 



forced joists, Design of, 102 

 Reinforcing planks, Length of, 106 

 Relation between moment and shear, 



1.-., 42 



Resistance, Development of mo- 

 ment of, 65 



Resistance, Moment of, defined, 63 

 Resistance of lag screws, 138 

 Resistance of nails, 106, 138 

 Resistance of wood screws, 138 

 Resisting forces, Action of, 56 

 Resisting moment and internal forces, 



56 



Resisting moment, definition, 1 1 

 Resisting moment on cantilever beam, 



12 



;ue< 1 beams, 46 

 Retaining wall tied at top and bottom, 



291 

 Retaining wall, Reinforced concrete, 



290 



Retaining walls and tanks, 2X3 

 Retaining walls, Counterforts in, 291 

 Retaining walls, Pressure against, 289 

 Reverse moment, Point of, 41, 46 

 Rivet clearance for machine driving, 



199 



Rivet spacing, Standards for, 195 

 Rivets, and riveting, 188 

 Rivets, Double shear, 191 

 Rivets, Finding center of gravity of 



group of, 200 



Rivet- ill inelal, 106 



Rivet- in plate girder flanges, Spac- 

 ing, 115, 117 



. Shearing and bearing value 

 of, table, I'.M) 



Riveted connections, Is.'. 



Riveting ends of beams, 47 



Riveted joints r*. pin connections, 

 185 



iiear, 191 



Rivets, Table of, 190 



Rivets, Strength of, 190 



Rods, Design of, 146 



Rods and bars, table, 148 



Roof, curved. Wind on, 234 



Roof loads, 135 



Roof truss h<-el, 203 



Roof trusses, Stresses in, 132 



Roof trusses, Tables of stresses, 229 



Rule for bending moment at any 

 sect ion of beam, -'.', 



Rule for locating point of zero shear, 

 36 



Rule for position of maximum bend- 

 ing moment, 36 



Rule of Pythagoras, 57 



Rupture, Modulus of, 78 



Safety, Definition of factor of, 12 



Scissors truss, 225 



Screw end bars, table, 147 



Secondary stresses in framed struc- 

 tures, 196 



Section modulus, definition, 66 



Section modulus for T-sections, 

 Method of finding, 66 



Shear and moment, Relation be- 

 tween, 1"), \'2 



Shcar, definition, 14 



Shear diagrams for beams, 107 



Shear in wooden beams, 78 



Shear, zero, Rule for locating point 

 of, 36 



Shearing and bearing value of rivets, 

 table, 190 



Shear-pin splice, 155 



Shearing resistance, 75 



Shearing stresses, horizontal, 75 



Shearing stress in steel, 75 



Shears and moments in building 

 frames, 260 



Shed roof truss, 224 



Shop-driven rivets, 189 



Sidewalk canopy design, 59 



Signs used for stresses, 135 



Single shear rivets, 191 



Single strut beams, 119 



Slide rules, 81 



Slide rules for reinforced concrete 

 design, SI 



Slope, Beams on, 100 



