26/09/2019
Derivation of D/162
Area of steel Rod =3.14×D×D/4
V of steel Rod =A×L, where, L=1m=1000mm
Density steel =7850Kg/m3
=7850/1000×1000×1000
Weight of bar per meter =V×Density of steel
=[3.14×D2/4]×1000×[7850/1000×1000×1000]
=0.785D2×0.007850
=0.0616225×D2
=D2/(1/0.00616225)
Weight of bar per meter=D2/162.279=D2/162=proved
Set by A.Seyoum