xvi Contents
Determination of Section Moduli ................................... 2.61Effect of Increase in Beam Span .................................. 2.62Effect of Beam Overload .............................................. 2.62Prestressed-Concrete Beam Design Guides ................ 2.63Kern Distances ............................................................. 2.63Magnel Diagram Construction ...................................... 2.64Camber of a Beam at Transfer ..................................... 2.66Design of a Double-T Roof Beam ................................. 2.68Design of a Posttensioned Girder ................................. 2.71Properties of a Parabolic Arc ........................................ 2.75Alternative Methods of Analyzing a Beam with
Parabolic Trajectory ........................................... 2.76Prestress Moments in a Continuous Beam ................... 2.78Principle of Linear Transformation ................................ 2.79Concordant Trajectory of a Beam ................................. 2.81Design of Trajectory to Obtain Assigned Prestress
Moments ............................................................ 2.82Effect of Varying Eccentricity at End Support ............... 2.82Design of Trajectory for a Two-Span Continuous
Beam ................................................................. 2.83Reactions for a Continuous Beam ................................ 2.90Steel Beam Encased in Concrete ................................. 2.90Composite Steel-and-Concrete Beam .......................... 2.92Design of a Concrete Joist in a Ribbed Floor ............... 2.95Design of a Stair Slab .................................................. 2.97Free Vibratory Motion of a Rigid Bent .......................... 2.98Section 3. Timber Engineering .................................... 3.1
Bending Stress and Deflection of Wood Joists .................... 3.2Shearing Stress Caused by Stationary Concentrated
Load ......................................................................... 3.2