How to find steel (Rebars) weight?
It’s very important to know the weight of
rebars, for calculation we must use the bellow formula:
the weight of everything = Total cross-section area x length x Density.
That mean, W = A x L x P = πD^2/4 x L x P (Density of steel bar) =,
The density of steel bar =
7850 Kg/m3 , 
= 3.14 =>> W= 3.14(0.001 x
0.001 x D2)/4 x L x 7850 =
LD2/162, So the formula is W=D2L/162
( D (Diameter) is in mm, 1mm=0.001 m)
W= Weight of Steel bars D=Diameter of Steel
bar in millimeter, L=Length of steel bars in meter.
Hope to understand all of you now we can
get steel bars weight easily by this formula.
Exp: Find the weight for a 100-meter long
12mm steel bar?
Sol: L=100 m, D=12mm, W=LD2/162
=>> W=LD2/162 = 100 x 122/162
= 14400/162 Kgr = 88.888 Kgr
Different diameter steel bars weight:
|
S- No |
Diameter of steel bar |
Weight by Kgr / Per meter |
|
1 |
Steel bar (6 mm) |
0.22 Kgr/m |
|
2 |
Steel bar (8 mm) |
0.39 Kgr/m |
|
3 |
Steel bar (10 mm) |
0.62 Kgr/m |
|
4 |
Steel bar (12 mm) |
0.89 Kgr/m |
|
5 |
Steel bar (16 mm) |
1.58 Kgr/m |
|
6 |
Steel bar (20 mm) |
2.46 Kgr/m |
|
7 |
Steel bar (25 mm) |
3.85 Kgr/m |
|
8 |
Steel bar (28 mm) |
4.83 Kgr/m |
|
9 |
Steel bar (32 mm) |
6.31 Kgr/m |
|
10 |
Steel bar (36 mm) |
7.99 Kgr/m |
|
11 |
Steel bar (40 mm) |
9.86 Kgr/m |
|
12 |
Steel bar (45 mm) |
12.49 Kgr/m |
|
13 |
Steel bar (50 mm) |
19.62 Kgr/m |
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