Question

A column section I.S.H.B. 350@674 N/m carries an axial load of 1100 kN and it is subjected to a bending moment of 60 kN-m. A base plate of 810 x 550 mm is provided. Maximum compressive stress in concrete under near edge of the plate is _____.

Answer 1

P = 1100 kN, M = 60 kN-m

$e=\frac{M}{P}=\frac{60\times {10}^3}{1100}=54.54mm$

Maximum compressive stress
$=\frac{P}{BL}(1+\frac{6e}{L})$

$=\frac{1100\times {10}^3}{550\times 810}(1+\frac{54.54}{550}\times 6)$

$=3.938N/m{m}^2$