Nowadays, you will get a readymade weight calculator and weight chart for all types of I - beam or H -beam sections of different dimensions. You can calculate the weight, just by entering the values in the calculator.
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| Beam section. |
All of these beam sections come with a corner radius or with sharp corners as shown in the fig. below.
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| I - beam with radius. |
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| I - beam with a sharp corner. |
I have shown below, the calculation procedure for all radius sharp I - beam sections with equal flange width, having 3m. length.
Here, beam height H = 400mm., flange width w = 150mm., flange thickness t = 12mm., web thickness b = 14mm., and length L =3m.
Now, the area of the two equal flanges
A1 = flange width (w) × flange thickness (t) × 2nos.
= 150mm × 12mm. × 2nos.
Converting it into meters,
= 0.15m × 0.012m. × 2
A1 = 0.0036 sq.m.
The area of the web ( pink colored area )
A2 = (beam height - (2 × flange thickness)) × web thickness
= (400mm - ( 2 × 12mm)) × 14mm.
= 376mm. × 14mm.
Converting them into meters,
= 0.376m × 0.014m
A2 = 0.005264 sq.m.
Total sectional area
A = area of flange (A1) + area of the web (A2)
=0.0036 + 0.005264
= 0.008864 sq.m.
Now, the volume of the I - beam
= Area (A) × Length (L)
= 0.008864sq.m. × 3m.
= 0.026592 cubic meter.
Weight of the I - beam section
= volume × density
= 0.026592 cu.m. × 7850 kg/cu.m.
Here, the density of steel is taken as 7850kg/cu.m. for the calculation purpose.
Weight = 208.747 kg.
NOTE:
1. When the flange width is unequal, we have to calculate the area of the top and bottom flanges separately.
2. The calculation procedure for all types of I -beam ad H -beam (having sharp corners) will be the same as explained above.
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