Question

A 24in diameter concrete column, at 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 120.0ksi. the column is 10.00ft long. Assume elasticity of concrete
to be 4200ksi and the ultimate compressive and ultimate tensile strength as 2.400kis 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 factor of safety? Is the column safe? Check whether the roof is carried away or not?