Question

A 24in diameter concrete column, at the tenth story of an office building, is
supporting the flat roof slab is subjected to a wind uplift load of 50.00kips while
carrying a factored compressive force of 120.0 kips. The column is 10.00ft long.
Assume elasticity of concrete to be 4200ksi and the ultimate compressive and
ultimate tensile strength as 2.400ksi and 0.2000ksi respectively. Determine:

Answer 1

a) The axial compressive stress from compressive force only
b) The axial tensile stress from wind action only
c) The net stress
d) The Deformation of the column
e) The strain in the column
f) The final length of the column
g) The factor of safety? Is the column safe? Check whether the roof is carried
away or not?