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Wide Flange Steel I Beam: W8 × 10
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Glossary » Beams » Simply Supported » Uniformly Distributed Load » Two Equal Spans » Wide Flange Steel I Beam » W8 × 10
Wide Flange Steel I Beam | Single Span | Two Equal Spans | Three Equal Spans | Four Equal Spans

For a simply supported beam in two equal spans, we compute the displacement at the middle of each span w_mid and the maximum normal stress stress_max occuring at the center support of the beam.
The tabulated data listed in this page are calculated based on the area moment of inertia (Ixx = 30.8 in4) for the W8 × 10 Wide Flange Steel I Beam and the typical Young's modulus (E = 3.046 × 107 psi) of steels. Note that the typical yielding stress Yield of steels can range from 1.015 × 104 to 2.970 × 105 psi. The purpose of this page is to give a rough estimation of the load-bearing capacity of this particular beam, rather than a guideline for designing actual building structures. Please check your local building codes for regulatory requirements.

Note: The weight of the beam itself is not included in the calculation.
L = 3 ft
L = 5 ft
L = 10 ft
L = 15 ft
L = 20 ft
L = 25 ft
L = 30 ft
L = 40 ft
L = 50 ft
L = 60 ft
L = 70 ft
L = 80 ft
L = 90 ft
  
Steel I Beam: W8 × 10 (Wide Flange 8 inch tall × 10 lbf/ft)
L = 3.00 ft
P (lbf/ft) w_max (in) stress_max (psi)
10.0 7.77 × 10-6 17.3
20.0 1.55 × 10-5 34.6
30.0 2.33 × 10-5 51.9
40.0 3.11 × 10-5 69.2
50.0 3.89 × 10-5 86.5
60.0 4.66 × 10-5 104
70.0 5.44 × 10-5 121
80.0 6.22 × 10-5 138
90.0 6.99 × 10-5 156
100 7.77 × 10-5 173
200 1.55 × 10-4 346
300 2.33 × 10-4 519
400 3.11 × 10-4 692
500 3.89 × 10-4 865
600 4.66 × 10-4 1040
700 5.44 × 10-4 1210
800 6.22 × 10-4 1380
900 6.99 × 10-4 1560
1000 7.77 × 10-4 1730
2000 0.00155 3460
3000 0.00233 5190
4000 0.00311 6920
5000 0.00389 8650
6000 0.00466 1.04 × 104
7000 0.00544 1.21 × 104
8000 0.00622 1.38 × 104
9000 0.00699 1.56 × 104
1.00 × 104 0.00777 1.73 × 104
2.00 × 104 0.0155 3.46 × 104
3.00 × 104 0.0233 5.19 × 104
4.00 × 104 0.0311 6.92 × 104
5.00 × 104 0.0389 8.65 × 104
6.00 × 104 0.0466 1.04 × 105
7.00 × 104 0.0544 1.21 × 105
8.00 × 104 0.0622 1.38 × 105
9.00 × 104 0.0699 1.56 × 105
1.00 × 105 0.0777 1.73 × 105
1.72 × 105 0.133 2.97 × 105
Steel I Beam: W8 × 10 (Wide Flange 8 inch tall × 10 lbf/ft)
L = 5.00 ft
P (lbf/ft) w_max (in) stress_max (psi)
10.0 6.00 × 10-5 48.0
20.0 1.20 × 10-4 96.1
30.0 1.80 × 10-4 144
40.0 2.40 × 10-4 192
50.0 3.00 × 10-4 240
60.0 3.60 × 10-4 288
70.0 4.20 × 10-4 336
80.0 4.80 × 10-4 384
90.0 5.40 × 10-4 432
100 6.00 × 10-4 480
200 0.00120 961
300 0.00180 1440
400 0.00240 1920
500 0.00300 2400
600 0.00360 2880
700 0.00420 3360
800 0.00480 3840
900 0.00540 4320
1000 0.00600 4800
2000 0.0120 9610
3000 0.0180 1.44 × 104
4000 0.0240 1.92 × 104
5000 0.0300 2.40 × 104
6000 0.0360 2.88 × 104
7000 0.0420 3.36 × 104
8000 0.0480 3.84 × 104
9000 0.0540 4.32 × 104
1.00 × 104 0.0600 4.80 × 104
2.00 × 104 0.120 9.61 × 104
3.00 × 104 0.180 1.44 × 105
4.00 × 104 0.240 1.92 × 105
5.00 × 104 0.300 2.40 × 105
6.00 × 104 0.360 2.88 × 105
6.18 × 104 0.371 2.97 × 105
Steel I Beam: W8 × 10 (Wide Flange 8 inch tall × 10 lbf/ft)
L = 10.0 ft
P (lbf/ft) w_max (in) stress_max (psi)
10.0 9.59 × 10-4 192
20.0 0.00192 384
30.0 0.00288 576
40.0 0.00384 769
50.0 0.00480 961
60.0 0.00576 1150
70.0 0.00672 1340
80.0 0.00768 1540
90.0 0.00863 1730
100 0.00959 1920
200 0.0192 3840
300 0.0288 5760
400 0.0384 7690
500 0.0480 9610
600 0.0576 1.15 × 104
700 0.0672 1.34 × 104
800 0.0768 1.54 × 104
900 0.0863 1.73 × 104
1000 0.0959 1.92 × 104
2000 0.192 3.84 × 104
3000 0.288 5.76 × 104
4000 0.384 7.69 × 104
5000 0.480 9.61 × 104
6000 0.576 1.15 × 105
7000 0.672 1.34 × 105
8000 0.768 1.54 × 105
9000 0.863 1.73 × 105
1.00 × 104 0.959 1.92 × 105
1.55 × 104 1.48 2.97 × 105
Steel I Beam: W8 × 10 (Wide Flange 8 inch tall × 10 lbf/ft)
L = 15.0 ft
P (lbf/ft) w_max (in) stress_max (psi)
10.0 0.00486 432
20.0 0.00971 865
30.0 0.0146 1300
40.0 0.0194 1730
50.0 0.0243 2160
60.0 0.0291 2590
70.0 0.0340 3030
80.0 0.0389 3460
90.0 0.0437 3890
100 0.0486 4320
200 0.0971 8650
300 0.146 1.30 × 104
400 0.194 1.73 × 104
500 0.243 2.16 × 104
600 0.291 2.59 × 104
700 0.340 3.03 × 104
800 0.389 3.46 × 104
900 0.437 3.89 × 104
1000 0.486 4.32 × 104
2000 0.971 8.65 × 104
3000 1.46 1.30 × 105
4000 1.94 1.73 × 105
5000 2.43 2.16 × 105
6000 2.91 2.59 × 105
6870 3.34 2.97 × 105
Steel I Beam: W8 × 10 (Wide Flange 8 inch tall × 10 lbf/ft)
L = 20.0 ft
P (lbf/ft) w_max (in) stress_max (psi)
10.0 0.0154 769
20.0 0.0307 1540
30.0 0.0461 2310
40.0 0.0614 3070
50.0 0.0768 3840
60.0 0.0921 4610
70.0 0.107 5380
80.0 0.123 6150
90.0 0.138 6920
100 0.154 7690
200 0.307 1.54 × 104
300 0.461 2.31 × 104
400 0.614 3.07 × 104
500 0.768 3.84 × 104
600 0.921 4.61 × 104
700 1.07 5.38 × 104
800 1.23 6.15 × 104
900 1.38 6.92 × 104
1000 1.54 7.69 × 104
2000 3.07 1.54 × 105
3000 4.61 2.31 × 105
3870 5.93 2.97 × 105
Steel I Beam: W8 × 10 (Wide Flange 8 inch tall × 10 lbf/ft)
L = 25.0 ft
P (lbf/ft) w_max (in) stress_max (psi)
10.0 0.0375 1200
20.0 0.0750 2400
30.0 0.112 3600
40.0 0.150 4800
50.0 0.187 6000
60.0 0.225 7200
70.0 0.262 8410
80.0 0.300 9610
90.0 0.337 1.08 × 104
100 0.375 1.20 × 104
200 0.750 2.40 × 104
300 1.12 3.60 × 104
400 1.50 4.80 × 104
500 1.87 6.00 × 104
600 2.25 7.20 × 104
700 2.62 8.41 × 104
800 3.00 9.61 × 104
900 3.37 1.08 × 105
1000 3.75 1.20 × 105
2000 7.50 2.40 × 105
2470 9.27 2.97 × 105
Steel I Beam: W8 × 10 (Wide Flange 8 inch tall × 10 lbf/ft)
L = 30.0 ft
P (lbf/ft) w_max (in) stress_max (psi)
10.0 0.0777 1730
20.0 0.155 3460
30.0 0.233 5190
40.0 0.311 6920
50.0 0.389 8650
60.0 0.466 1.04 × 104
70.0 0.544 1.21 × 104
80.0 0.622 1.38 × 104
90.0 0.699 1.56 × 104
100 0.777 1.73 × 104
200 1.55 3.46 × 104
300 2.33 5.19 × 104
400 3.11 6.92 × 104
500 3.89 8.65 × 104
600 4.66 1.04 × 105
700 5.44 1.21 × 105
800 6.22 1.38 × 105
900 6.99 1.56 × 105
1000 7.77 1.73 × 105
1720 13.3 2.97 × 105
Steel I Beam: W8 × 10 (Wide Flange 8 inch tall × 10 lbf/ft)
L = 40.0 ft
P (lbf/ft) w_max (in) stress_max (psi)
10.0 0.246 3070
20.0 0.491 6150
30.0 0.737 9220
40.0 0.982 1.23 × 104
50.0 1.23 1.54 × 104
60.0 1.47 1.84 × 104
70.0 1.72 2.15 × 104
80.0 1.96 2.46 × 104
90.0 2.21 2.77 × 104
100 2.46 3.07 × 104
200 4.91 6.15 × 104
300 7.37 9.22 × 104
321 7.89 9.88 × 104
Steel I Beam: W8 × 10 (Wide Flange 8 inch tall × 10 lbf/ft)
L = 50.0 ft
P (lbf/ft) w_max (in) stress_max (psi)
10.0 0.600 4800
20.0 1.20 9610
30.0 1.80 1.44 × 104
40.0 2.40 1.92 × 104
50.0 3.00 2.40 × 104
60.0 3.60 2.88 × 104
70.0 4.20 3.36 × 104
80.0 4.80 3.84 × 104
90.0 5.40 4.32 × 104
100 6.00 4.80 × 104
132 7.89 6.32 × 104
Steel I Beam: W8 × 10 (Wide Flange 8 inch tall × 10 lbf/ft)
L = 60.0 ft
P (lbf/ft) w_max (in) stress_max (psi)
10.0 1.24 6920
20.0 2.49 1.38 × 104
30.0 3.73 2.07 × 104
40.0 4.97 2.77 × 104
50.0 6.22 3.46 × 104
60.0 7.46 4.15 × 104
63.5 7.89 4.39 × 104
Steel I Beam: W8 × 10 (Wide Flange 8 inch tall × 10 lbf/ft)
L = 70.0 ft
P (lbf/ft) w_max (in) stress_max (psi)
10.0 2.30 9410
20.0 4.61 1.88 × 104
30.0 6.91 2.82 × 104
34.3 7.89 3.22 × 104
Steel I Beam: W8 × 10 (Wide Flange 8 inch tall × 10 lbf/ft)
L = 80.0 ft
P (lbf/ft) w_max (in) stress_max (psi)
10.0 3.93 1.23 × 104
20.0 7.86 2.46 × 104
20.1 7.89 2.47 × 104
Steel I Beam: W8 × 10 (Wide Flange 8 inch tall × 10 lbf/ft)
L = 90.0 ft
P (lbf/ft) w_max (in) stress_max (psi)
10.0 6.29 1.56 × 104
12.5 7.89 1.95 × 104
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