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Wide Flange Steel I Beam: W14 × 30
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Glossary » Beams » Simply Supported » Uniformly Distributed Load » Two Equal Spans » Wide Flange Steel I Beam » W14 × 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 = 291 in4) for the W14 × 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
L = 125 ft
  
Steel I Beam: W14 × 30 (Wide Flange 14 inch tall × 30 lbf/ft)
L = 3.00 ft
P (lbf/ft) w_max (in) stress_max (psi)
30.0 2.47 × 10-6 9.63
40.0 3.29 × 10-6 12.8
50.0 4.11 × 10-6 16.1
60.0 4.93 × 10-6 19.3
70.0 5.76 × 10-6 22.5
80.0 6.58 × 10-6 25.7
90.0 7.40 × 10-6 28.9
100 8.22 × 10-6 32.1
200 1.64 × 10-5 64.2
300 2.47 × 10-5 96.3
400 3.29 × 10-5 128
500 4.11 × 10-5 161
600 4.93 × 10-5 193
700 5.76 × 10-5 225
800 6.58 × 10-5 257
900 7.40 × 10-5 289
1000 8.22 × 10-5 321
2000 1.64 × 10-4 642
3000 2.47 × 10-4 963
4000 3.29 × 10-4 1280
5000 4.11 × 10-4 1610
6000 4.93 × 10-4 1930
7000 5.76 × 10-4 2250
8000 6.58 × 10-4 2570
9000 7.40 × 10-4 2890
1.00 × 104 8.22 × 10-4 3210
2.00 × 104 0.00164 6420
3.00 × 104 0.00247 9630
4.00 × 104 0.00329 1.28 × 104
5.00 × 104 0.00411 1.61 × 104
6.00 × 104 0.00493 1.93 × 104
7.00 × 104 0.00576 2.25 × 104
8.00 × 104 0.00658 2.57 × 104
9.00 × 104 0.00740 2.89 × 104
1.00 × 105 0.00822 3.21 × 104
2.00 × 105 0.0164 6.42 × 104
3.00 × 105 0.0247 9.63 × 104
4.00 × 105 0.0329 1.28 × 105
5.00 × 105 0.0411 1.61 × 105
6.00 × 105 0.0493 1.93 × 105
7.00 × 105 0.0576 2.25 × 105
8.00 × 105 0.0658 2.57 × 105
9.00 × 105 0.0740 2.89 × 105
9.25 × 105 0.0761 2.97 × 105
Steel I Beam: W14 × 30 (Wide Flange 14 inch tall × 30 lbf/ft)
L = 5.00 ft
P (lbf/ft) w_max (in) stress_max (psi)
30.0 1.90 × 10-5 26.8
40.0 2.54 × 10-5 35.7
50.0 3.17 × 10-5 44.6
60.0 3.81 × 10-5 53.5
70.0 4.44 × 10-5 62.4
80.0 5.08 × 10-5 71.3
90.0 5.71 × 10-5 80.3
100 6.35 × 10-5 89.2
200 1.27 × 10-4 178
300 1.90 × 10-4 268
400 2.54 × 10-4 357
500 3.17 × 10-4 446
600 3.81 × 10-4 535
700 4.44 × 10-4 624
800 5.08 × 10-4 713
900 5.71 × 10-4 803
1000 6.35 × 10-4 892
2000 0.00127 1780
3000 0.00190 2680
4000 0.00254 3570
5000 0.00317 4460
6000 0.00381 5350
7000 0.00444 6240
8000 0.00508 7130
9000 0.00571 8030
1.00 × 104 0.00635 8920
2.00 × 104 0.0127 1.78 × 104
3.00 × 104 0.0190 2.68 × 104
4.00 × 104 0.0254 3.57 × 104
5.00 × 104 0.0317 4.46 × 104
6.00 × 104 0.0381 5.35 × 104
7.00 × 104 0.0444 6.24 × 104
8.00 × 104 0.0508 7.13 × 104
9.00 × 104 0.0571 8.03 × 104
1.00 × 105 0.0635 8.92 × 104
2.00 × 105 0.127 1.78 × 105
3.00 × 105 0.190 2.68 × 105
3.33 × 105 0.211 2.97 × 105
Steel I Beam: W14 × 30 (Wide Flange 14 inch tall × 30 lbf/ft)
L = 10.0 ft
P (lbf/ft) w_max (in) stress_max (psi)
30.0 3.05 × 10-4 107
40.0 4.06 × 10-4 143
50.0 5.08 × 10-4 178
60.0 6.09 × 10-4 214
70.0 7.11 × 10-4 250
80.0 8.12 × 10-4 285
90.0 9.14 × 10-4 321
100 0.00102 357
200 0.00203 713
300 0.00305 1070
400 0.00406 1430
500 0.00508 1780
600 0.00609 2140
700 0.00711 2500
800 0.00812 2850
900 0.00914 3210
1000 0.0102 3570
2000 0.0203 7130
3000 0.0305 1.07 × 104
4000 0.0406 1.43 × 104
5000 0.0508 1.78 × 104
6000 0.0609 2.14 × 104
7000 0.0711 2.50 × 104
8000 0.0812 2.85 × 104
9000 0.0914 3.21 × 104
1.00 × 104 0.102 3.57 × 104
2.00 × 104 0.203 7.13 × 104
3.00 × 104 0.305 1.07 × 105
4.00 × 104 0.406 1.43 × 105
5.00 × 104 0.508 1.78 × 105
6.00 × 104 0.609 2.14 × 105
7.00 × 104 0.711 2.50 × 105
8.00 × 104 0.812 2.85 × 105
8.33 × 104 0.846 2.97 × 105
Steel I Beam: W14 × 30 (Wide Flange 14 inch tall × 30 lbf/ft)
L = 15.0 ft
P (lbf/ft) w_max (in) stress_max (psi)
30.0 0.00154 241
40.0 0.00206 321
50.0 0.00257 401
60.0 0.00308 482
70.0 0.00360 562
80.0 0.00411 642
90.0 0.00463 722
100 0.00514 803
200 0.0103 1610
300 0.0154 2410
400 0.0206 3210
500 0.0257 4010
600 0.0308 4820
700 0.0360 5620
800 0.0411 6420
900 0.0463 7220
1000 0.0514 8030
2000 0.103 1.61 × 104
3000 0.154 2.41 × 104
4000 0.206 3.21 × 104
5000 0.257 4.01 × 104
6000 0.308 4.82 × 104
7000 0.360 5.62 × 104
8000 0.411 6.42 × 104
9000 0.463 7.22 × 104
1.00 × 104 0.514 8.03 × 104
2.00 × 104 1.03 1.61 × 105
3.00 × 104 1.54 2.41 × 105
3.70 × 104 1.90 2.97 × 105
Steel I Beam: W14 × 30 (Wide Flange 14 inch tall × 30 lbf/ft)
L = 20.0 ft
P (lbf/ft) w_max (in) stress_max (psi)
30.0 0.00487 428
40.0 0.00650 571
50.0 0.00812 713
60.0 0.00975 856
70.0 0.0114 999
80.0 0.0130 1140
90.0 0.0146 1280
100 0.0162 1430
200 0.0325 2850
300 0.0487 4280
400 0.0650 5710
500 0.0812 7130
600 0.0975 8560
700 0.114 9990
800 0.130 1.14 × 104
900 0.146 1.28 × 104
1000 0.162 1.43 × 104
2000 0.325 2.85 × 104
3000 0.487 4.28 × 104
4000 0.650 5.71 × 104
5000 0.812 7.13 × 104
6000 0.975 8.56 × 104
7000 1.14 9.99 × 104
8000 1.30 1.14 × 105
9000 1.46 1.28 × 105
1.00 × 104 1.62 1.43 × 105
2.00 × 104 3.25 2.85 × 105
2.08 × 104 3.38 2.97 × 105
Steel I Beam: W14 × 30 (Wide Flange 14 inch tall × 30 lbf/ft)
L = 25.0 ft
P (lbf/ft) w_max (in) stress_max (psi)
30.0 0.0119 669
40.0 0.0159 892
50.0 0.0198 1110
60.0 0.0238 1340
70.0 0.0278 1560
80.0 0.0317 1780
90.0 0.0357 2010
100 0.0397 2230
200 0.0793 4460
300 0.119 6690
400 0.159 8920
500 0.198 1.11 × 104
600 0.238 1.34 × 104
700 0.278 1.56 × 104
800 0.317 1.78 × 104
900 0.357 2.01 × 104
1000 0.397 2.23 × 104
2000 0.793 4.46 × 104
3000 1.19 6.69 × 104
4000 1.59 8.92 × 104
5000 1.98 1.11 × 105
6000 2.38 1.34 × 105
7000 2.78 1.56 × 105
8000 3.17 1.78 × 105
9000 3.57 2.01 × 105
1.00 × 104 3.97 2.23 × 105
1.33 × 104 5.28 2.97 × 105
Steel I Beam: W14 × 30 (Wide Flange 14 inch tall × 30 lbf/ft)
L = 30.0 ft
P (lbf/ft) w_max (in) stress_max (psi)
30.0 0.0247 963
40.0 0.0329 1280
50.0 0.0411 1610
60.0 0.0493 1930
70.0 0.0576 2250
80.0 0.0658 2570
90.0 0.0740 2890
100 0.0822 3210
200 0.164 6420
300 0.247 9630
400 0.329 1.28 × 104
500 0.411 1.61 × 104
600 0.493 1.93 × 104
700 0.576 2.25 × 104
800 0.658 2.57 × 104
900 0.740 2.89 × 104
1000 0.822 3.21 × 104
2000 1.64 6.42 × 104
3000 2.47 9.63 × 104
4000 3.29 1.28 × 105
5000 4.11 1.61 × 105
6000 4.93 1.93 × 105
7000 5.76 2.25 × 105
8000 6.58 2.57 × 105
9000 7.40 2.89 × 105
9250 7.61 2.97 × 105
Steel I Beam: W14 × 30 (Wide Flange 14 inch tall × 30 lbf/ft)
L = 40.0 ft
P (lbf/ft) w_max (in) stress_max (psi)
30.0 0.0780 1710
40.0 0.104 2280
50.0 0.130 2850
60.0 0.156 3420
70.0 0.182 4000
80.0 0.208 4570
90.0 0.234 5140
100 0.260 5710
200 0.520 1.14 × 104
300 0.780 1.71 × 104
400 1.04 2.28 × 104
500 1.30 2.85 × 104
600 1.56 3.42 × 104
700 1.82 4.00 × 104
800 2.08 4.57 × 104
900 2.34 5.14 × 104
1000 2.60 5.71 × 104
2000 5.20 1.14 × 105
3000 7.80 1.71 × 105
4000 10.4 2.28 × 105
5000 13.0 2.85 × 105
5200 13.5 2.97 × 105
Steel I Beam: W14 × 30 (Wide Flange 14 inch tall × 30 lbf/ft)
L = 50.0 ft
P (lbf/ft) w_max (in) stress_max (psi)
30.0 0.190 2680
40.0 0.254 3570
50.0 0.317 4460
60.0 0.381 5350
70.0 0.444 6240
80.0 0.508 7130
90.0 0.571 8030
100 0.635 8920
200 1.27 1.78 × 104
300 1.90 2.68 × 104
400 2.54 3.57 × 104
500 3.17 4.46 × 104
600 3.81 5.35 × 104
700 4.44 6.24 × 104
800 5.08 7.13 × 104
900 5.71 8.03 × 104
1000 6.35 8.92 × 104
2000 12.7 1.78 × 105
2180 13.8 1.94 × 105
Steel I Beam: W14 × 30 (Wide Flange 14 inch tall × 30 lbf/ft)
L = 60.0 ft
P (lbf/ft) w_max (in) stress_max (psi)
30.0 0.395 3850
40.0 0.526 5140
50.0 0.658 6420
60.0 0.790 7700
70.0 0.921 8990
80.0 1.05 1.03 × 104
90.0 1.18 1.16 × 104
100 1.32 1.28 × 104
200 2.63 2.57 × 104
300 3.95 3.85 × 104
400 5.26 5.14 × 104
500 6.58 6.42 × 104
600 7.90 7.70 × 104
700 9.21 8.99 × 104
800 10.5 1.03 × 105
900 11.8 1.16 × 105
1000 13.2 1.28 × 105
1050 13.8 1.35 × 105
Steel I Beam: W14 × 30 (Wide Flange 14 inch tall × 30 lbf/ft)
L = 70.0 ft
P (lbf/ft) w_max (in) stress_max (psi)
30.0 0.731 5240
40.0 0.975 6990
50.0 1.22 8740
60.0 1.46 1.05 × 104
70.0 1.71 1.22 × 104
80.0 1.95 1.40 × 104
90.0 2.19 1.57 × 104
100 2.44 1.75 × 104
200 4.88 3.50 × 104
300 7.31 5.24 × 104
400 9.75 6.99 × 104
500 12.2 8.74 × 104
568 13.8 9.92 × 104
Steel I Beam: W14 × 30 (Wide Flange 14 inch tall × 30 lbf/ft)
L = 80.0 ft
P (lbf/ft) w_max (in) stress_max (psi)
30.0 1.25 6850
40.0 1.66 9130
50.0 2.08 1.14 × 104
60.0 2.50 1.37 × 104
70.0 2.91 1.60 × 104
80.0 3.33 1.83 × 104
90.0 3.74 2.05 × 104
100 4.16 2.28 × 104
200 8.32 4.57 × 104
300 12.5 6.85 × 104
333 13.8 7.60 × 104
Steel I Beam: W14 × 30 (Wide Flange 14 inch tall × 30 lbf/ft)
L = 90.0 ft
P (lbf/ft) w_max (in) stress_max (psi)
30.0 2.00 8670
40.0 2.66 1.16 × 104
50.0 3.33 1.44 × 104
60.0 4.00 1.73 × 104
70.0 4.66 2.02 × 104
80.0 5.33 2.31 × 104
90.0 6.00 2.60 × 104
100 6.66 2.89 × 104
200 13.3 5.78 × 104
208 13.8 6.00 × 104
Steel I Beam: W14 × 30 (Wide Flange 14 inch tall × 30 lbf/ft)
L = 100 ft
P (lbf/ft) w_max (in) stress_max (psi)
30.0 3.05 1.07 × 104
40.0 4.06 1.43 × 104
50.0 5.08 1.78 × 104
60.0 6.09 2.14 × 104
70.0 7.11 2.50 × 104
80.0 8.12 2.85 × 104
90.0 9.14 3.21 × 104
100 10.2 3.57 × 104
136 13.8 4.86 × 104
Steel I Beam: W14 × 30 (Wide Flange 14 inch tall × 30 lbf/ft)
L = 125 ft
P (lbf/ft) w_max (in) stress_max (psi)
30.0 7.44 1.67 × 104
40.0 9.92 2.23 × 104
50.0 12.4 2.79 × 104
55.8 13.8 3.11 × 104
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