STRUCTURAL DESIGN FOR ARCHITECTURE

Structural Design for Architecture

Table A2.5a Permissible stresses for steel compressive elements (after BS 449)

Intermediate values may be obtained by linear interpolation.

NOTE. For material over 40 mm thick, other than rolled I-beams or channels, and for universal columns of thicknesse:

exceeding 40 mm, the limiting stress is 140 N/mm^2.

3 The permissible compressive stress is

obtained from Table A2.5, based on the

highest of the slenderness ratio value calcu

lated in 2.

4 The actual compressive stress which will

occur is calculated from the applied load

and the area of the trial cross-section (given

in the Steel Section Tables) and compared

with the permissible value. The actual value

should be equal to or slightly less than the

permissible stress. If it is not, a new trial

section is selected and the above sequence

260 repeated.