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Wide Flange Steel I Beam: W10 × 30
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Glossary » Beams » Simply Supported » Uniformly Distributed Load » Two Equal Spans » Wide Flange Steel I Beam » W10 × 30
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 = 170 in4) for the W10 × 30 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
L = 100 ft
   
Steel I Beam: W10 × 30 (Wide Flange 10 inch tall × 30 lbf/ft)
L = 3.00 ft
P (lbf/ft) w_max (in) stress_max (psi)
30.0 4.22 × 10-6 12.5
40.0 5.63 × 10-6 16.6
50.0 7.04 × 10-6 20.8
60.0 8.45 × 10-6 24.9
70.0 9.86 × 10-6 29.1
80.0 1.13 × 10-5 33.3
90.0 1.27 × 10-5 37.4
100 1.41 × 10-5 41.6
200 2.82 × 10-5 83.1
300 4.22 × 10-5 125
400 5.63 × 10-5 166
500 7.04 × 10-5 208
600 8.45 × 10-5 249
700 9.86 × 10-5 291
800 1.13 × 10-4 333
900 1.27 × 10-4 374
1000 1.41 × 10-4 416
2000 2.82 × 10-4 831
3000 4.22 × 10-4 1250
4000 5.63 × 10-4 1660
5000 7.04 × 10-4 2080
6000 8.45 × 10-4 2490
7000 9.86 × 10-4 2910
8000 0.00113 3330
9000 0.00127 3740
1.00 × 104 0.00141 4160
2.00 × 104 0.00282 8310
3.00 × 104 0.00422 1.25 × 104
4.00 × 104 0.00563 1.66 × 104
5.00 × 104 0.00704 2.08 × 104
6.00 × 104 0.00845 2.49 × 104
7.00 × 104 0.00986 2.91 × 104
8.00 × 104 0.0113 3.33 × 104
9.00 × 104 0.0127 3.74 × 104
1.00 × 105 0.0141 4.16 × 104
2.00 × 105 0.0282 8.31 × 104
3.00 × 105 0.0422 1.25 × 105
4.00 × 105 0.0563 1.66 × 105
5.00 × 105 0.0704 2.08 × 105
6.00 × 105 0.0845 2.49 × 105
7.00 × 105 0.0986 2.91 × 105
7.15 × 105 0.101 2.97 × 105
Steel I Beam: W10 × 30 (Wide Flange 10 inch tall × 30 lbf/ft)
L = 5.00 ft
P (lbf/ft) w_max (in) stress_max (psi)
30.0 3.26 × 10-5 34.6
40.0 4.35 × 10-5 46.2
50.0 5.43 × 10-5 57.7
60.0 6.52 × 10-5 69.3
70.0 7.60 × 10-5 80.8
80.0 8.69 × 10-5 92.4
90.0 9.78 × 10-5 104
100 1.09 × 10-4 115
200 2.17 × 10-4 231
300 3.26 × 10-4 346
400 4.35 × 10-4 462
500 5.43 × 10-4 577
600 6.52 × 10-4 693
700 7.60 × 10-4 808
800 8.69 × 10-4 924
900 9.78 × 10-4 1040
1000 0.00109 1150
2000 0.00217 2310
3000 0.00326 3460
4000 0.00435 4620
5000 0.00543 5770
6000 0.00652 6930
7000 0.00760 8080
8000 0.00869 9240
9000 0.00978 1.04 × 104
1.00 × 104 0.0109 1.15 × 104
2.00 × 104 0.0217 2.31 × 104
3.00 × 104 0.0326 3.46 × 104
4.00 × 104 0.0435 4.62 × 104
5.00 × 104 0.0543 5.77 × 104
6.00 × 104 0.0652 6.93 × 104
7.00 × 104 0.0760 8.08 × 104
8.00 × 104 0.0869 9.24 × 104
9.00 × 104 0.0978 1.04 × 105
1.00 × 105 0.109 1.15 × 105
2.00 × 105 0.217 2.31 × 105
2.57 × 105 0.279 2.97 × 105
Steel I Beam: W10 × 30 (Wide Flange 10 inch tall × 30 lbf/ft)
L = 10.0 ft
P (lbf/ft) w_max (in) stress_max (psi)
30.0 5.21 × 10-4 139
40.0 6.95 × 10-4 185
50.0 8.69 × 10-4 231
60.0 0.00104 277
70.0 0.00122 323
80.0 0.00139 370
90.0 0.00156 416
100 0.00174 462
200 0.00348 924
300 0.00521 1390
400 0.00695 1850
500 0.00869 2310
600 0.0104 2770
700 0.0122 3230
800 0.0139 3700
900 0.0156 4160
1000 0.0174 4620
2000 0.0348 9240
3000 0.0521 1.39 × 104
4000 0.0695 1.85 × 104
5000 0.0869 2.31 × 104
6000 0.104 2.77 × 104
7000 0.122 3.23 × 104
8000 0.139 3.70 × 104
9000 0.156 4.16 × 104
1.00 × 104 0.174 4.62 × 104
2.00 × 104 0.348 9.24 × 104
3.00 × 104 0.521 1.39 × 105
4.00 × 104 0.695 1.85 × 105
5.00 × 104 0.869 2.31 × 105
6.00 × 104 1.04 2.77 × 105
6.43 × 104 1.12 2.97 × 105
Steel I Beam: W10 × 30 (Wide Flange 10 inch tall × 30 lbf/ft)
L = 15.0 ft
P (lbf/ft) w_max (in) stress_max (psi)
30.0 0.00264 312
40.0 0.00352 416
50.0 0.00440 520
60.0 0.00528 624
70.0 0.00616 728
80.0 0.00704 831
90.0 0.00792 935
100 0.00880 1040
200 0.0176 2080
300 0.0264 3120
400 0.0352 4160
500 0.0440 5200
600 0.0528 6240
700 0.0616 7280
800 0.0704 8310
900 0.0792 9350
1000 0.0880 1.04 × 104
2000 0.176 2.08 × 104
3000 0.264 3.12 × 104
4000 0.352 4.16 × 104
5000 0.440 5.20 × 104
6000 0.528 6.24 × 104
7000 0.616 7.28 × 104
8000 0.704 8.31 × 104
9000 0.792 9.35 × 104
1.00 × 104 0.880 1.04 × 105
2.00 × 104 1.76 2.08 × 105
2.86 × 104 2.51 2.97 × 105
Steel I Beam: W10 × 30 (Wide Flange 10 inch tall × 30 lbf/ft)
L = 20.0 ft
P (lbf/ft) w_max (in) stress_max (psi)
30.0 0.00834 554
40.0 0.0111 739
50.0 0.0139 924
60.0 0.0167 1110
70.0 0.0195 1290
80.0 0.0222 1480
90.0 0.0250 1660
100 0.0278 1850
200 0.0556 3700
300 0.0834 5540
400 0.111 7390
500 0.139 9240
600 0.167 1.11 × 104
700 0.195 1.29 × 104
800 0.222 1.48 × 104
900 0.250 1.66 × 104
1000 0.278 1.85 × 104
2000 0.556 3.70 × 104
3000 0.834 5.54 × 104
4000 1.11 7.39 × 104
5000 1.39 9.24 × 104
6000 1.67 1.11 × 105
7000 1.95 1.29 × 105
8000 2.22 1.48 × 105
9000 2.50 1.66 × 105
1.00 × 104 2.78 1.85 × 105
1.61 × 104 4.47 2.97 × 105
Steel I Beam: W10 × 30 (Wide Flange 10 inch tall × 30 lbf/ft)
L = 25.0 ft
P (lbf/ft) w_max (in) stress_max (psi)
30.0 0.0204 866
40.0 0.0272 1150
50.0 0.0339 1440
60.0 0.0407 1730
70.0 0.0475 2020
80.0 0.0543 2310
90.0 0.0611 2600
100 0.0679 2890
200 0.136 5770
300 0.204 8660
400 0.272 1.15 × 104
500 0.339 1.44 × 104
600 0.407 1.73 × 104
700 0.475 2.02 × 104
800 0.543 2.31 × 104
900 0.611 2.60 × 104
1000 0.679 2.89 × 104
2000 1.36 5.77 × 104
3000 2.04 8.66 × 104
4000 2.72 1.15 × 105
5000 3.39 1.44 × 105
6000 4.07 1.73 × 105
7000 4.75 2.02 × 105
8000 5.43 2.31 × 105
9000 6.11 2.60 × 105
1.00 × 104 6.79 2.89 × 105
1.03 × 104 6.99 2.97 × 105
Steel I Beam: W10 × 30 (Wide Flange 10 inch tall × 30 lbf/ft)
L = 30.0 ft
P (lbf/ft) w_max (in) stress_max (psi)
30.0 0.0422 1250
40.0 0.0563 1660
50.0 0.0704 2080
60.0 0.0845 2490
70.0 0.0986 2910
80.0 0.113 3330
90.0 0.127 3740
100 0.141 4160
200 0.282 8310
300 0.422 1.25 × 104
400 0.563 1.66 × 104
500 0.704 2.08 × 104
600 0.845 2.49 × 104
700 0.986 2.91 × 104
800 1.13 3.33 × 104
900 1.27 3.74 × 104
1000 1.41 4.16 × 104
2000 2.82 8.31 × 104
3000 4.22 1.25 × 105
4000 5.63 1.66 × 105
5000 7.04 2.08 × 105
6000 8.45 2.49 × 105
7000 9.86 2.91 × 105
7150 10.1 2.97 × 105
Steel I Beam: W10 × 30 (Wide Flange 10 inch tall × 30 lbf/ft)
L = 40.0 ft
P (lbf/ft) w_max (in) stress_max (psi)
30.0 0.133 2220
40.0 0.178 2960
50.0 0.222 3700
60.0 0.267 4430
70.0 0.311 5170
80.0 0.356 5910
90.0 0.400 6650
100 0.445 7390
200 0.890 1.48 × 104
300 1.33 2.22 × 104
400 1.78 2.96 × 104
500 2.22 3.70 × 104
600 2.67 4.43 × 104
700 3.11 5.17 × 104
800 3.56 5.91 × 104
900 4.00 6.65 × 104
1000 4.45 7.39 × 104
2000 8.90 1.48 × 105
2350 10.5 1.74 × 105
Steel I Beam: W10 × 30 (Wide Flange 10 inch tall × 30 lbf/ft)
L = 50.0 ft
P (lbf/ft) w_max (in) stress_max (psi)
30.0 0.326 3460
40.0 0.435 4620
50.0 0.543 5770
60.0 0.652 6930
70.0 0.760 8080
80.0 0.869 9240
90.0 0.978 1.04 × 104
100 1.09 1.15 × 104
200 2.17 2.31 × 104
300 3.26 3.46 × 104
400 4.35 4.62 × 104
500 5.43 5.77 × 104
600 6.52 6.93 × 104
700 7.60 8.08 × 104
800 8.69 9.24 × 104
900 9.78 1.04 × 105
964 10.5 1.11 × 105
Steel I Beam: W10 × 30 (Wide Flange 10 inch tall × 30 lbf/ft)
L = 60.0 ft
P (lbf/ft) w_max (in) stress_max (psi)
30.0 0.676 4990
40.0 0.901 6650
50.0 1.13 8310
60.0 1.35 9980
70.0 1.58 1.16 × 104
80.0 1.80 1.33 × 104
90.0 2.03 1.50 × 104
100 2.25 1.66 × 104
200 4.51 3.33 × 104
300 6.76 4.99 × 104
400 9.01 6.65 × 104
465 10.5 7.73 × 104
Steel I Beam: W10 × 30 (Wide Flange 10 inch tall × 30 lbf/ft)
L = 70.0 ft
P (lbf/ft) w_max (in) stress_max (psi)
30.0 1.25 6790
40.0 1.67 9050
50.0 2.09 1.13 × 104
60.0 2.50 1.36 × 104
70.0 2.92 1.58 × 104
80.0 3.34 1.81 × 104
90.0 3.76 2.04 × 104
100 4.17 2.26 × 104
200 8.35 4.53 × 104
251 10.5 5.68 × 104
Steel I Beam: W10 × 30 (Wide Flange 10 inch tall × 30 lbf/ft)
L = 80.0 ft
P (lbf/ft) w_max (in) stress_max (psi)
30.0 2.14 8870
40.0 2.85 1.18 × 104
50.0 3.56 1.48 × 104
60.0 4.27 1.77 × 104
70.0 4.98 2.07 × 104
80.0 5.70 2.36 × 104
90.0 6.41 2.66 × 104
100 7.12 2.96 × 104
147 10.5 4.35 × 104
Steel I Beam: W10 × 30 (Wide Flange 10 inch tall × 30 lbf/ft)
L = 90.0 ft
P (lbf/ft) w_max (in) stress_max (psi)
30.0 3.42 1.12 × 104
40.0 4.56 1.50 × 104
50.0 5.70 1.87 × 104
60.0 6.84 2.24 × 104
70.0 7.98 2.62 × 104
80.0 9.12 2.99 × 104
90.0 10.3 3.37 × 104
91.8 10.5 3.44 × 104
Steel I Beam: W10 × 30 (Wide Flange 10 inch tall × 30 lbf/ft)
L = 100 ft
P (lbf/ft) w_max (in) stress_max (psi)
30.0 5.21 1.39 × 104
40.0 6.95 1.85 × 104
50.0 8.69 2.31 × 104
60.0 10.4 2.77 × 104
60.2 10.5 2.78 × 104
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