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Modified stability functions for uniformly tapered beam-columns having wide flange, box section, and other cross-sectional shapes are developed and tabulated for different values of axial parameters, end depths ratios, and shape factors. They make
possible the rapid prediction of the elastic critical load of structures with non-prismatic members, using a hand-computing method. Approximate formulae for the modified stability functions are presented.
S. Z. Al-Sarraf
A method is presented for the minimum cost design of multistorey
rectangular steel frames to limiting values of horizontal sway
deflection. The frame is rendered statically determinate by
assuming points of contraflexure. Realistic expressions for steelwork
cost are obtained in terms of the moments of inertia of the
members. These expressions are used, together with slopedeflection
analysis, to derive equations for design. The equations
are suitable for hand calculations, and their accuracy is found to be
good by comparison with computer analysis. Account can be taken
of restrictions on section size and change of section, and of the lack
of a continuous range of rolled sections.
D. Anderson and M.A. Islam
A method is presented to evaluate the response of vertically vibrating machines placed on large, flexible, elastically supported slabs.
I. Alpan and D. Leshchinsky