Author: Faber, John
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Faber, John
The Structural Engineer, Volume 30, Issue 10, 1952
Mr. Ernest Granter, who will be installed as President of the Institution on October 9th, is a Civil Engineer with the London County Council.
The paper describes the use of prestressed concrete in the primary and secondary beams of a block of 1O hangars at London Airport. The primary beams were 150 ft. clear span and were cast in situ with precast diaphragms; the secondary beams were 11O ft. clear span and were precast in segments 7 ft. 2 in. long. A.J. Harris
Sir,-A method has recently been described, for analysing continuous ridged portal frames of any number of spans by calculating fixed-end moments and forces produced by the loading, and then imposing a succession of rotational and linear displacements at eaves joints until the restraining moments and forces at these points all become negligibly small.