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anthonyk2013
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A concrete column having a modulus of elasticity of 20GN/m2 is reinforced by two steel bars of 25mm diameter having modulus of 200GN/m2.
Calculate the dimensions of a square section strut if the stress in the concrete is not to exceed 7MN/m2 and the load is to be 400KN.
σ in conctete not to exceed 7*106
Load =400KN
E of steel=200GN/m2
E of concrete=20GN/m2
Area of steel=3.14*252/4*2=982*10-3m2
Area of concrete=?
σc/Ec=σs/Es
σc=σs*Ec/Es
σc=σs*20/200
σc=σs*.1
7*106=σs*.1
7/.1*106=σs
σs=70*106MN/M2
Wondering if I m on the right track?
Calculate the dimensions of a square section strut if the stress in the concrete is not to exceed 7MN/m2 and the load is to be 400KN.
σ in conctete not to exceed 7*106
Load =400KN
E of steel=200GN/m2
E of concrete=20GN/m2
Area of steel=3.14*252/4*2=982*10-3m2
Area of concrete=?
σc/Ec=σs/Es
σc=σs*Ec/Es
σc=σs*20/200
σc=σs*.1
7*106=σs*.1
7/.1*106=σs
σs=70*106MN/M2
Wondering if I m on the right track?
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