302 



INDEX 



Smoley's tables for structural de- 

 signers, 62 



Snow load, Ketchum's recommenda- 

 tions, 233 



Span, Length of, 42 

 Span, Two unequal loads on, 37 

 Specifications for structural steel, 195 

 Spikes, see Nails, 106 

 Splice, shear-pin, 155 

 Stacks, brick, Rule for thickness, 283 

 Stair and rafter stringers, 100 

 Standards for rivet spacing, 195 

 Standards for steel work, 195 

 Statics, Graphic, 207 

 Steel beams, Lateral stays for, 101 

 Steel column formula used in the 



United States, 248 

 Steel handbooks, 85, 87 

 Steel plate, Table of, 150 

 Steel salesmen designers, 54 

 Steel, Shearing stress in, 75 

 Steel stacks, Formula for self-sup- 

 porting, 282 



Steel work, Standards for, 195 

 Stiffness of wood beams, 101 

 Stirrups and hangers, 93 

 Stirrup sizes and capacities, table, 96 

 Stone and brick laid in cement mor- 

 tar, 264 

 Stone and brick walls, Bottom width, 



290 



Straight-line formula, Euler's, 246 

 Straight-line formula, Winslow's, 242 

 Strength and stiffness of beams, 45 

 Stress at any point in frame, 58, 60 

 Stress in water towers, 278 

 Stress strain diagram, 69 

 Stresses in bowstring girders, 131 

 Stresses in braces in roof trusses, 132 

 Stresses in chimneys, 280 

 Stresses in roof trusses, 132 

 Stresses in towers, 277 

 Stresses in trusses, 124 

 Stresses in Warren truss, 128 

 Stresses, Secondary, in framed struc- 

 tures, 196 



Stresses, Secondary, in wooden 

 trusses, 183 



Stresses, Signs used for, 135 

 Stringers, Stair and rafter, 100 

 Structural steel, Specifications for, 



195 



Structure, definition, 9 

 Structures and columns, 241 

 Struts or compression members, Pro- 

 portioning, 252 



Stub tabled fish-plate joint, 158 

 Supports, Beams resting on two, 17 



Tabled fish-plate splice, 156 

 Tables of stresses for roof trusses, 229 

 Tank, iron and steel, table, 149 

 Tank tower design, 277 

 Tank walls, Weight against, 287 

 Tanks and bins, Curves for design- 

 ing, 283 



Tanks and bins, Square and rectan- 

 gular, 285 



Tanks and retaining walls, 283 

 Tension in rivets, 189 

 Three-moment theorem, 238 

 Through truss, Pratt, 221 

 Through truss, Warren, 220 

 Tie and strut, Design of combined, 



153 



Timber framework, Cracks in, 144 

 Timbers, Working value of, 139 

 Top chords of trusses, Making joints 



for, 162 



Towers, Stresses in, 277 

 Tredgold's, Thos., rule for beams, 101 

 Triangle of forces, 208 

 Triangle the strongest frame, 56 

 Triangles of force, 62 

 Truss a skeleton beam, 121, 125, 126 

 Truss, Crescent, 223 

 Truss, Hog back, 224 

 Truss, Lattice, 128 

 Truss, Scissors, 225 

 Truss, Shed roof, 224 

 Truss with cambered tie rod, 214 

 Truss with -subvertical and sub- 

 diagonal ends, 127 

 Trussed beams, 118 

 Trusses and girders, 102 



