Treatise on the Theory of the Construction of Bridges and Roads

angle assumed beam becomes bridge C₂ cast iron centre coefficient compression considered counter-braces dead load depth diagonals directly end brace equal weights equation exceed factor of safety feet find the strain formula gives H₁ hence horizontal inclined pieces iron joints king-post live load load extends lower chord main braces material maximum deflection maximum strain maximum stress middle minimum modulus morocco n-th bay n-th pair number of bays one-half origin of moments p₁ P₂ panel system parabola posts preceding pressure rafters rectangular resist roof shown in Fig side span square inch strains due supported chord Suppose sustain take the origin tang tension tie rods tie-braces tons total load transverse shearing stress triangular truss Truss Bridges uniform load upper chord V₁ w₁ whole length wrought iron zero