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Stability functions for beam-column supported on continuous Winkler foundation or driven into elastic soil are developed and tabulated for different values of axial load parameters and soil stiffnesses. They enable the rapid prediction of the elastic critical load of structures with some members supported by or driven into soil, having constant modulus of subgrade reaction, using a hand-computing method. Applicable to
bearing piles and other related structures with full or partial penetration with any ends restraints. Approximate formulae for the stability functions are derived.
This paper compares the more commonly used design rules for compression laps in reinforced concrete columns with the results of research carried out recently at the University of Glasgow.
P.D. Arthur and J.W. Cairns
Mr J. M. Mawditt (M): The paper is to be commended for simplifying the design procedure associated with the use of the material stress -strain curves as required by clause 220.127.116.11. of CP 110.