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Wide Flange Steel I Beam: W14 × 30
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Glossary » Beams » Simply Supported » Uniformly Distributed Load » Three 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 three equal spans, we compute the displacement at the middle of the first and the third spans, and the maximum normal stress stress_max occuring at the second and third supports 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 3.22 × 10-6 7.70
40.0 4.30 × 10-6 10.3
50.0 5.37 × 10-6 12.8
60.0 6.44 × 10-6 15.4
70.0 7.52 × 10-6 18.0
80.0 8.59 × 10-6 20.5
90.0 9.66 × 10-6 23.1
100 1.07 × 10-5 25.7
200 2.15 × 10-5 51.4
300 3.22 × 10-5 77.0
400 4.30 × 10-5 103
500 5.37 × 10-5 128
600 6.44 × 10-5 154
700 7.52 × 10-5 180
800 8.59 × 10-5 205
900 9.66 × 10-5 231
1000 1.07 × 10-4 257
2000 2.15 × 10-4 514
3000 3.22 × 10-4 770
4000 4.30 × 10-4 1030
5000 5.37 × 10-4 1280
6000 6.44 × 10-4 1540
7000 7.52 × 10-4 1800
8000 8.59 × 10-4 2050
9000 9.66 × 10-4 2310
1.00 × 104 0.00107 2570
2.00 × 104 0.00215 5140
3.00 × 104 0.00322 7700
4.00 × 104 0.00430 1.03 × 104
5.00 × 104 0.00537 1.28 × 104
6.00 × 104 0.00644 1.54 × 104
7.00 × 104 0.00752 1.80 × 104
8.00 × 104 0.00859 2.05 × 104
9.00 × 104 0.00966 2.31 × 104
1.00 × 105 0.0107 2.57 × 104
2.00 × 105 0.0215 5.14 × 104
3.00 × 105 0.0322 7.70 × 104
4.00 × 105 0.0430 1.03 × 105
5.00 × 105 0.0537 1.28 × 105
6.00 × 105 0.0644 1.54 × 105
7.00 × 105 0.0752 1.80 × 105
8.00 × 105 0.0859 2.05 × 105
9.00 × 105 0.0966 2.31 × 105
1.00 × 106 0.107 2.57 × 105
1.16 × 106 0.124 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 2.49 × 10-5 21.4
40.0 3.31 × 10-5 28.5
50.0 4.14 × 10-5 35.7
60.0 4.97 × 10-5 42.8
70.0 5.80 × 10-5 49.9
80.0 6.63 × 10-5 57.1
90.0 7.46 × 10-5 64.2
100 8.29 × 10-5 71.3
200 1.66 × 10-4 143
300 2.49 × 10-4 214
400 3.31 × 10-4 285
500 4.14 × 10-4 357
600 4.97 × 10-4 428
700 5.80 × 10-4 499
800 6.63 × 10-4 571
900 7.46 × 10-4 642
1000 8.29 × 10-4 713
2000 0.00166 1430
3000 0.00249 2140
4000 0.00331 2850
5000 0.00414 3570
6000 0.00497 4280
7000 0.00580 4990
8000 0.00663 5710
9000 0.00746 6420
1.00 × 104 0.00829 7130
2.00 × 104 0.0166 1.43 × 104
3.00 × 104 0.0249 2.14 × 104
4.00 × 104 0.0331 2.85 × 104
5.00 × 104 0.0414 3.57 × 104
6.00 × 104 0.0497 4.28 × 104
7.00 × 104 0.0580 4.99 × 104
8.00 × 104 0.0663 5.71 × 104
9.00 × 104 0.0746 6.42 × 104
1.00 × 105 0.0829 7.13 × 104
2.00 × 105 0.166 1.43 × 105
3.00 × 105 0.249 2.14 × 105
4.00 × 105 0.331 2.85 × 105
4.16 × 105 0.345 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 3.98 × 10-4 85.6
40.0 5.30 × 10-4 114
50.0 6.63 × 10-4 143
60.0 7.95 × 10-4 171
70.0 9.28 × 10-4 200
80.0 0.00106 228
90.0 0.00119 257
100 0.00133 285
200 0.00265 571
300 0.00398 856
400 0.00530 1140
500 0.00663 1430
600 0.00795 1710
700 0.00928 2000
800 0.0106 2280
900 0.0119 2570
1000 0.0133 2850
2000 0.0265 5710
3000 0.0398 8560
4000 0.0530 1.14 × 104
5000 0.0663 1.43 × 104
6000 0.0795 1.71 × 104
7000 0.0928 2.00 × 104
8000 0.106 2.28 × 104
9000 0.119 2.57 × 104
1.00 × 104 0.133 2.85 × 104
2.00 × 104 0.265 5.71 × 104
3.00 × 104 0.398 8.56 × 104
4.00 × 104 0.530 1.14 × 105
5.00 × 104 0.663 1.43 × 105
6.00 × 104 0.795 1.71 × 105
7.00 × 104 0.928 2.00 × 105
8.00 × 104 1.06 2.28 × 105
9.00 × 104 1.19 2.57 × 105
1.00 × 105 1.33 2.85 × 105
1.04 × 105 1.38 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 0.00201 193
40.0 0.00268 257
50.0 0.00336 321
60.0 0.00403 385
70.0 0.00470 449
80.0 0.00537 514
90.0 0.00604 578
100 0.00671 642
200 0.0134 1280
300 0.0201 1930
400 0.0268 2570
500 0.0336 3210
600 0.0403 3850
700 0.0470 4490
800 0.0537 5140
900 0.0604 5780
1000 0.0671 6420
2000 0.134 1.28 × 104
3000 0.201 1.93 × 104
4000 0.268 2.57 × 104
5000 0.336 3.21 × 104
6000 0.403 3.85 × 104
7000 0.470 4.49 × 104
8000 0.537 5.14 × 104
9000 0.604 5.78 × 104
1.00 × 104 0.671 6.42 × 104
2.00 × 104 1.34 1.28 × 105
3.00 × 104 2.01 1.93 × 105
4.00 × 104 2.68 2.57 × 105
4.63 × 104 3.10 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 0.00636 342
40.0 0.00848 457
50.0 0.0106 571
60.0 0.0127 685
70.0 0.0148 799
80.0 0.0170 913
90.0 0.0191 1030
100 0.0212 1140
200 0.0424 2280
300 0.0636 3420
400 0.0848 4570
500 0.106 5710
600 0.127 6850
700 0.148 7990
800 0.170 9130
900 0.191 1.03 × 104
1000 0.212 1.14 × 104
2000 0.424 2.28 × 104
3000 0.636 3.42 × 104
4000 0.848 4.57 × 104
5000 1.06 5.71 × 104
6000 1.27 6.85 × 104
7000 1.48 7.99 × 104
8000 1.70 9.13 × 104
9000 1.91 1.03 × 105
1.00 × 104 2.12 1.14 × 105
2.00 × 104 4.24 2.28 × 105
2.60 × 104 5.52 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 0.0155 535
40.0 0.0207 713
50.0 0.0259 892
60.0 0.0311 1070
70.0 0.0363 1250
80.0 0.0414 1430
90.0 0.0466 1610
100 0.0518 1780
200 0.104 3570
300 0.155 5350
400 0.207 7130
500 0.259 8920
600 0.311 1.07 × 104
700 0.363 1.25 × 104
800 0.414 1.43 × 104
900 0.466 1.61 × 104
1000 0.518 1.78 × 104
2000 1.04 3.57 × 104
3000 1.55 5.35 × 104
4000 2.07 7.13 × 104
5000 2.59 8.92 × 104
6000 3.11 1.07 × 105
7000 3.63 1.25 × 105
8000 4.14 1.43 × 105
9000 4.66 1.61 × 105
1.00 × 104 5.18 1.78 × 105
1.67 × 104 8.62 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 0.0322 770
40.0 0.0430 1030
50.0 0.0537 1280
60.0 0.0644 1540
70.0 0.0752 1800
80.0 0.0859 2050
90.0 0.0966 2310
100 0.107 2570
200 0.215 5140
300 0.322 7700
400 0.430 1.03 × 104
500 0.537 1.28 × 104
600 0.644 1.54 × 104
700 0.752 1.80 × 104
800 0.859 2.05 × 104
900 0.966 2.31 × 104
1000 1.07 2.57 × 104
2000 2.15 5.14 × 104
3000 3.22 7.70 × 104
4000 4.30 1.03 × 105
5000 5.37 1.28 × 105
6000 6.44 1.54 × 105
7000 7.52 1.80 × 105
8000 8.59 2.05 × 105
9000 9.66 2.31 × 105
1.00 × 104 10.7 2.57 × 105
1.16 × 104 12.4 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 0.102 1370
40.0 0.136 1830
50.0 0.170 2280
60.0 0.204 2740
70.0 0.238 3200
80.0 0.272 3650
90.0 0.305 4110
100 0.339 4570
200 0.679 9130
300 1.02 1.37 × 104
400 1.36 1.83 × 104
500 1.70 2.28 × 104
600 2.04 2.74 × 104
700 2.38 3.20 × 104
800 2.72 3.65 × 104
900 3.05 4.11 × 104
1000 3.39 4.57 × 104
2000 6.79 9.13 × 104
3000 10.2 1.37 × 105
4000 13.6 1.83 × 105
4080 13.8 1.86 × 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 0.249 2140
40.0 0.331 2850
50.0 0.414 3570
60.0 0.497 4280
70.0 0.580 4990
80.0 0.663 5710
90.0 0.746 6420
100 0.829 7130
200 1.66 1.43 × 104
300 2.49 2.14 × 104
400 3.31 2.85 × 104
500 4.14 3.57 × 104
600 4.97 4.28 × 104
700 5.80 4.99 × 104
800 6.63 5.71 × 104
900 7.46 6.42 × 104
1000 8.29 7.13 × 104
1670 13.8 1.19 × 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 0.515 3080
40.0 0.687 4110
50.0 0.859 5140
60.0 1.03 6160
70.0 1.20 7190
80.0 1.37 8220
90.0 1.55 9250
100 1.72 1.03 × 104
200 3.44 2.05 × 104
300 5.15 3.08 × 104
400 6.87 4.11 × 104
500 8.59 5.14 × 104
600 10.3 6.16 × 104
700 12.0 7.19 × 104
800 13.7 8.22 × 104
806 13.8 8.28 × 104
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 0.955 4190
40.0 1.27 5590
50.0 1.59 6990
60.0 1.91 8390
70.0 2.23 9790
80.0 2.55 1.12 × 104
90.0 2.86 1.26 × 104
100 3.18 1.40 × 104
200 6.37 2.80 × 104
300 9.55 4.19 × 104
400 12.7 5.59 × 104
435 13.8 6.08 × 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 1.63 5480
40.0 2.17 7310
50.0 2.72 9130
60.0 3.26 1.10 × 104
70.0 3.80 1.28 × 104
80.0 4.34 1.46 × 104
90.0 4.89 1.64 × 104
100 5.43 1.83 × 104
200 10.9 3.65 × 104
255 13.8 4.65 × 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 2.61 6930
40.0 3.48 9250
50.0 4.35 1.16 × 104
60.0 5.22 1.39 × 104
70.0 6.09 1.62 × 104
80.0 6.96 1.85 × 104
90.0 7.83 2.08 × 104
100 8.70 2.31 × 104
159 13.8 3.68 × 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 3.98 8560
40.0 5.30 1.14 × 104
50.0 6.63 1.43 × 104
60.0 7.95 1.71 × 104
70.0 9.28 2.00 × 104
80.0 10.6 2.28 × 104
90.0 11.9 2.57 × 104
100 13.3 2.85 × 104
104 13.8 2.98 × 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 9.71 1.34 × 104
40.0 12.9 1.78 × 104
42.8 13.8 1.91 × 104
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