Calculation of the surface area of the rebar-
Considering the dia of rebar as 16mm and length as 1m.
Surface area= Length x Circumference of the bar (Considering bar having smooth surface)
= 1 x 2 π r
= 1 x (2 x 3.142 x 0.008)
=0.05 Sqm
Arnold Shelton
Management consultant