The quantity of the beam is very easy and simple. Just you need to know about the basics of Beam. Let’s solve this example to understand it better.
Let us have a simply supported beam having a cross-section of 300×500 mm and the length of the beam is 4 m. The main bars used in this beam are 20 mm and the support bar diameter is 16 mm. The diameter of the stirrup is 12 mm and the spacing of the stirrup at an end is 100 mm and 150 mm at the mid-support of the beams.
Calculate the required quantity of steel for the beam.
Cutting length of stirrups?
Calculate the weight of steel.
Length = 4 m
Height = 500 mm
Width = 300 mm
Main bars (20 mm):
length = length of beam + development length – bend
<bend 45deg=1d 90deg=2d 135deg=3d >
<development length is the grip between steel and concrete >