●How to calculate weightof square steel tube and its formula we know that square shaped Steel had various shape like Steel Tube steel pipe and steel bar we have to calculate weight of square steel tube per metre

● description:- you know that steel have many shape and size like square, rectangular , Octagonal,pentagonal etc. And Square steel pipe used in various civil work building construction and manufacturing of machine

●Solve:-
For calculating the weight of square tube or hollow square shape steel bar

● image dimension:-

Weight of square Steel Tube per metreWeight of square Steel Tube per metre

●Given dimension:-

we should convert all dimensional measurement in metre
Surface A side lenght=50mm =0.05m

Surface B side lenght=50mm =0.05m

Thickness. t=10mm =0.01m

Lenght. L=1m

Density of steel bar D=7850 kg/m3

● calculation:-

Weight=volume×Density

Total volume of square tube Steel bar is sum of volume of surface A and volume of surface B twice time or multiply by 2
Vt= total volume
Va = volume of surface area A
Vb = volume of surface area B
Hence Vt=Va+Vb
Va=(0.05×0.01×1)2 m3
Va=0.001m3
Vb={(0.05-0.01-0.01)0.01}2
Vb=0.03×0.01×2
Vb=0.0006m3

● Note:- for the surface B side dimension of thickness is 10 mm so upper and lower both sides 10 mm is decreased from 50 mm dimension
Hence Vt=Va+Vb
=0.001m3+0.0006m3
Hence Weight=Volume×density
W=0.0016m3×7850kg/m3
=12.56 Kg Ans.

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