Report of the Bridge Stress Committee
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2nnt amplitude Appendix applied axle loads balance weights blow bridge oscillator bridges tested calculated caused central deflection centre coil Committee considerable corresponding coupling rods crank crawl critical speed cross girders damping DEFLECTION CURVES deflection records deflectometer diagrams Diaq driving axles driving wheels dynamic magnifier Engine Frequency extensometers feet Fereday-Palmer Flange floor members formula galvanometer given impact allowances impact effects inertia Langport Lattice girder leading wheel live load load and hammer-blow loaded frequency Loco locomotive lurching main girders Manningtree MAUNBY maximum measured method natural frequency Newark Dyke obtained occur operative forces paragraph Pencoyd periods per second plate produced Queen Alexandra Bridge rail pressure Rail-joint Effects records taken resonance revolving masses River Aire shear short bridges short spans shown in Fig spring movement static Stoke Canon stress recorders structure synchronism TEST LOAD Thomas apparatus tons track Trough Ulleskelf unbalanced unloaded values variation of rail vertical vibrations