The Structural Engineer > Archive > Volume 42 (1964) > Issues > Issue 8 > The Use of Prestressed Steel in Elevated Roadways. Discussion on the paper by E. V. Finn MlStructE A
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The Use of Prestressed Steel in Elevated Roadways. Discussion on the paper by E. V. Finn MlStructE AMICE and F. H. Needham BSc MlStructE AMICE (Member of Council)

Introducing the paper, Mr. Needham said that a testing rig had been evolved capable of taking beams up to 25 ft span and 2 ft 6 in. deep with two 20-ton loads, hydraulically applied at the quarter-points. It had been intended for testing a wide range of prestressed girder designs. The loads needed to impart a load factor of two, on a quarter-scale model of the girder tested at MEXE, amounted to approximately 7 tons per jack; thus the capacity of the rig would enable much stronger models to be tested.