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Theoretically Steel Weight Formula

Release Date:[6/26/2010]     Hit Count:[]    

Theoretical Weight Calculation Formula Of Steel

        Name          Formula Symbol Meaning
Steel Bar/Wire Rod(kg/m)
W=0.006165*d*d
d=diameter(mm)
Screw Thread(kg/m)
W=0.00617*d*d
d=section diameter(mm)
Square Steel (kg/m)
W=0.00785*a*a
a=side width(mm)
Flat steel (kg/m)
W=0.00785*b*d

d=thickness(mm)

b=side width(mm)

Hexagonal steel(kg/m)
W=0.006798*s*s
s=side distance(mm)
Octagonal steel(kg/m)
W=0.0065*s*s
s=side distance(mm)
Equilateral angle steel(kg/m)
W=0.00785*[d(2b-d)+0.215(R*R-2r*r)]

B=width   r=????

R=inner semidiameter

D=thickness

Inequilateral angle steel(kg/m)
W=0.00785*[d(B+b-d)+0.215(R*R-2r*r)]

B=long side width

B=short side width

D=thickness

r=????

R=inner semidiameter

Channel steel(kg/m)
W=0.00785?/SPAN>[hd+2t(b-d)+0.349(R*R-r*r)]

h=height   d=thickness

b=length of leg

R=inner semidiameter

T=average thickness of leg

I-section steel(kg/m)
W=0.00785?SPAN lang=EN-US>[hd+2t(b-d)+0.615(R*R-r*r)]

h=height  d=thickness  b=length
R=inner semidiameter t=average thickness of leg 

Steel plate(kg/?)
W=7.85*d
d=thickness
Steel pipe
[including no-seam & welded pipe]  (kg/m)
W=0.02466*s(d-s)
d=outer diameter
s=thickness

Theoretical Steel Weight Form        Pipe: kg/m    Panel: kg/m2

Hot plate Checker plate  Square steel  I-section steel  Galv. flat steel  Electric wire tube  Galv. angle steel
Spec Weight Spec Weight Spec Weight Spec Weight Spec Weight Spec Weight Spec Weight
0.5 3.925 2.5 22.6 10*10 0.785 10# 11.261 25*4 0.827 15 0.625 40*4 2.567
0.75 5.888 3 26.6 12*12 1.13 12# 13.98 30*3 0.753 20 0.766 50*5 3.996
0.8 6.28 3.5 30.5 14*14 1.54 14# 16.89 40*4 1.325 25 1.048    
1 7.85 4 34.4 16*16 2.01 16# 20.516     32 1.329    
1.2 9.42 4.5 38.3 18*18 2.54 18# 24.143     40 1.611    
1.5 11.78 5 42.3 20*20 3.14 20b# 31.069     50 2.407    
2 15.7 6 50.1 25*25 4.91 22b# 36.524            
2.5 19.63 8 65.8 30*30 7.06 25b# 42.03            
3 23.55         28b# 47.888            
4 31.4         30b# 48.084            
5 39.25
 
6 47.1
8 62.8
10 78.5
12 94.2
14 109.9
Round & Deformed Channel steel  Welded steel pipe  Galv. pipe  Angle steel  Flat steel  no-seam steel pipe
Spec Weight Spec Weight Spec Weight Spec Weight  Spec Weight Spec Weight Spec Weight
6.5 0.26 5# 5.438 15 1.26 15 1.33 25*25*3 1.124 3*16 0.38 25*2.5 1.39
8 0.395 6.5# 6.709 20 1.63 20 1.73 30*30*3 1.373 4*16 0.50 32*3 2.15
10 0.617 8# 8.045 25 2.42 25 2.57 40*40*4 2.422 3*20 0.47 38*3 2.59
12 0.888 10# 10.007 32 3.13 32 3.32 50*50*5 3.77 4*20 0.63 45*4 4.04
14 1.21 12# 12.059 40 3.84 40 4.07 63*63*6 5.721 4*25 0.78 51*4 4.63
16 1.58 14a# 14.535 50 4.88 50 5.17 70*70*7 7.398 3*30 0.71 57*4 5.23
18 2 14b# 16.733 65 6.64 65 7.04 75*75*8 9.03 4*40 1.26 76*4.5 7.93
20 2.47 16a# 17.24 80 8.34 80 8.84 75*50*6 5.699 6*40 1.88 89*4.5 9.38
22 2.98 16# 19.752 100 10.85 100 11.5 80*80*8 9.658 5*50 1.96 108*4.5 11.49
25 3.85 18a# 20.174 125 15.04 125 15.94 90*90*7 9.656 8*50 3.14 127*4.5 13.59
28 4.83 18# 23 150 17.81 150 18.88 90*90*9 12.717 6*60 2.83 133*5 15.78
32 6.31 20a# 22.637 200 26.39         8*80 5.02 159*6 22.64
    20# 25.777             8*100 6.28 219*7 36.6
    22# 28.453             10*100 7.85 219*8 41.65
    25b# 31.335                 325*10 77.68
    28# 35.823                 377*12 108.02
    30# 39.173                    

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