How to find out the unit weight of mild steel angles

In this construction video tutorial, the eminent engineer Mukesh Shah, provides some step-by-step guidelines to compute unit weight of mild steel angles. It is very important for billing purpose of fabrication work in job site.

Suppose the size of the angle is taken as 20 x 20 x 3 mm i.e. length = 20 mm; width = 20 mm and thickness = 3 mm

Now you have to determine the unit weight of 1 meter.

Suppose, the angle is divided in two parts i.e. part A and Part B. Horizontal section is taken as A and vertical section is taken as B.

Volume of A = Length x Thickness x Height of the angle

= (0.02 x 0.003 x 1) [after converting from millimeter to meter)

Volume of B = (0.017 x 0.003 x x1) (after deducting the thickness from base i.e. 20-3 = 17)

Now, you can determine the weight of steel as follow :-

Weight = Volume of A & B x Density of steel (density of steel = 7850 Kg/m3)
= 0.9 Kg

So, the unit weight of steel = 0.9 Kg/m

In this way, you can find the unit weight for different sizes of angles.

To get more clear ideas, watch the following construction video tutorial.

Video Source: L & T - Learning Technology