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Wide Flange Steel I Beam: W8 × 10
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Glossary » Beams » Simply Supported » Uniformly Distributed Load » Four 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 four equal spans, we compute the displacement at the middle of the first and fourth spans, and the maximum normal stress stress_max occuring at the second and fourth supports 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 9.40 × 10-6 14.8
20.0 1.88 × 10-5 29.6
30.0 2.82 × 10-5 44.4
40.0 3.76 × 10-5 59.3
50.0 4.70 × 10-5 74.1
60.0 5.64 × 10-5 88.9
70.0 6.58 × 10-5 104
80.0 7.52 × 10-5 119
90.0 8.46 × 10-5 133
100 9.40 × 10-5 148
200 1.88 × 10-4 296
300 2.82 × 10-4 444
400 3.76 × 10-4 593
500 4.70 × 10-4 741
600 5.64 × 10-4 889
700 6.58 × 10-4 1040
800 7.52 × 10-4 1190
900 8.46 × 10-4 1330
1000 9.40 × 10-4 1480
2000 0.00188 2960
3000 0.00282 4440
4000 0.00376 5930
5000 0.00470 7410
6000 0.00564 8890
7000 0.00658 1.04 × 104
8000 0.00752 1.19 × 104
9000 0.00846 1.33 × 104
1.00 × 104 0.00940 1.48 × 104
2.00 × 104 0.0188 2.96 × 104
3.00 × 104 0.0282 4.44 × 104
4.00 × 104 0.0376 5.93 × 104
5.00 × 104 0.0470 7.41 × 104
6.00 × 104 0.0564 8.89 × 104
7.00 × 104 0.0658 1.04 × 105
8.00 × 104 0.0752 1.19 × 105
9.00 × 104 0.0846 1.33 × 105
1.00 × 105 0.0940 1.48 × 105
2.00 × 105 0.188 2.96 × 105
2.00 × 105 0.188 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 7.25 × 10-5 41.2
20.0 1.45 × 10-4 82.3
30.0 2.18 × 10-4 123
40.0 2.90 × 10-4 165
50.0 3.63 × 10-4 206
60.0 4.35 × 10-4 247
70.0 5.08 × 10-4 288
80.0 5.80 × 10-4 329
90.0 6.53 × 10-4 370
100 7.25 × 10-4 412
200 0.00145 823
300 0.00218 1230
400 0.00290 1650
500 0.00363 2060
600 0.00435 2470
700 0.00508 2880
800 0.00580 3290
900 0.00653 3700
1000 0.00725 4120
2000 0.0145 8230
3000 0.0218 1.23 × 104
4000 0.0290 1.65 × 104
5000 0.0363 2.06 × 104
6000 0.0435 2.47 × 104
7000 0.0508 2.88 × 104
8000 0.0580 3.29 × 104
9000 0.0653 3.70 × 104
1.00 × 104 0.0725 4.12 × 104
2.00 × 104 0.145 8.23 × 104
3.00 × 104 0.218 1.23 × 105
4.00 × 104 0.290 1.65 × 105
5.00 × 104 0.363 2.06 × 105
6.00 × 104 0.435 2.47 × 105
7.00 × 104 0.508 2.88 × 105
7.22 × 104 0.524 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 0.00116 165
20.0 0.00232 329
30.0 0.00348 494
40.0 0.00464 658
50.0 0.00580 823
60.0 0.00696 988
70.0 0.00812 1150
80.0 0.00928 1320
90.0 0.0104 1480
100 0.0116 1650
200 0.0232 3290
300 0.0348 4940
400 0.0464 6580
500 0.0580 8230
600 0.0696 9880
700 0.0812 1.15 × 104
800 0.0928 1.32 × 104
900 0.104 1.48 × 104
1000 0.116 1.65 × 104
2000 0.232 3.29 × 104
3000 0.348 4.94 × 104
4000 0.464 6.58 × 104
5000 0.580 8.23 × 104
6000 0.696 9.88 × 104
7000 0.812 1.15 × 105
8000 0.928 1.32 × 105
9000 1.04 1.48 × 105
1.00 × 104 1.16 1.65 × 105
1.80 × 104 2.09 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 0.00587 370
20.0 0.0117 741
30.0 0.0176 1110
40.0 0.0235 1480
50.0 0.0294 1850
60.0 0.0352 2220
70.0 0.0411 2590
80.0 0.0470 2960
90.0 0.0529 3330
100 0.0587 3700
200 0.117 7410
300 0.176 1.11 × 104
400 0.235 1.48 × 104
500 0.294 1.85 × 104
600 0.352 2.22 × 104
700 0.411 2.59 × 104
800 0.470 2.96 × 104
900 0.529 3.33 × 104
1000 0.587 3.70 × 104
2000 1.17 7.41 × 104
3000 1.76 1.11 × 105
4000 2.35 1.48 × 105
5000 2.94 1.85 × 105
6000 3.52 2.22 × 105
7000 4.11 2.59 × 105
8000 4.70 2.96 × 105
8020 4.71 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 0.0186 658
20.0 0.0371 1320
30.0 0.0557 1980
40.0 0.0743 2630
50.0 0.0928 3290
60.0 0.111 3950
70.0 0.130 4610
80.0 0.149 5270
90.0 0.167 5930
100 0.186 6580
200 0.371 1.32 × 104
300 0.557 1.98 × 104
400 0.743 2.63 × 104
500 0.928 3.29 × 104
600 1.11 3.95 × 104
700 1.30 4.61 × 104
800 1.49 5.27 × 104
900 1.67 5.93 × 104
1000 1.86 6.58 × 104
2000 3.71 1.32 × 105
3000 5.57 1.98 × 105
4000 7.43 2.63 × 105
4510 8.38 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 0.0453 1030
20.0 0.0907 2060
30.0 0.136 3090
40.0 0.181 4120
50.0 0.227 5140
60.0 0.272 6170
70.0 0.317 7200
80.0 0.363 8230
90.0 0.408 9260
100 0.453 1.03 × 104
200 0.907 2.06 × 104
300 1.36 3.09 × 104
400 1.81 4.12 × 104
500 2.27 5.14 × 104
600 2.72 6.17 × 104
700 3.17 7.20 × 104
800 3.63 8.23 × 104
900 4.08 9.26 × 104
1000 4.53 1.03 × 105
1740 7.89 1.79 × 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 0.0940 1480
20.0 0.188 2960
30.0 0.282 4440
40.0 0.376 5930
50.0 0.470 7410
60.0 0.564 8890
70.0 0.658 1.04 × 104
80.0 0.752 1.19 × 104
90.0 0.846 1.33 × 104
100 0.940 1.48 × 104
200 1.88 2.96 × 104
300 2.82 4.44 × 104
400 3.76 5.93 × 104
500 4.70 7.41 × 104
600 5.64 8.89 × 104
700 6.58 1.04 × 105
800 7.52 1.19 × 105
839 7.89 1.24 × 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 0.297 2630
20.0 0.594 5270
30.0 0.891 7900
40.0 1.19 1.05 × 104
50.0 1.49 1.32 × 104
60.0 1.78 1.58 × 104
70.0 2.08 1.84 × 104
80.0 2.38 2.11 × 104
90.0 2.67 2.37 × 104
100 2.97 2.63 × 104
200 5.94 5.27 × 104
266 7.89 7.00 × 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 0.725 4120
20.0 1.45 8230
30.0 2.18 1.23 × 104
40.0 2.90 1.65 × 104
50.0 3.63 2.06 × 104
60.0 4.35 2.47 × 104
70.0 5.08 2.88 × 104
80.0 5.80 3.29 × 104
90.0 6.53 3.70 × 104
100 7.25 4.12 × 104
109 7.89 4.48 × 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 1.50 5930
20.0 3.01 1.19 × 104
30.0 4.51 1.78 × 104
40.0 6.02 2.37 × 104
50.0 7.52 2.96 × 104
52.5 7.89 3.11 × 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 2.79 8070
20.0 5.57 1.61 × 104
28.3 7.89 2.28 × 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 4.75 1.05 × 104
16.6 7.89 1.75 × 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 7.61 1.33 × 104
10.4 7.89 1.38 × 104
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