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Wide Flange Steel I Beam: W14 × 38
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Glossary » Beams » Simply Supported » Uniformly Distributed Load » Three Equal Spans » Wide Flange Steel I Beam » W14 × 38
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 = 385 in4) for the W14 × 38 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 × 38 (Wide Flange 14 inch tall × 38 lbf/ft)
L = 3.00 ft
P (lbf/ft) w_max (in) stress_max (psi)
38.0 3.08 × 10-6 7.52
40.0 3.25 × 10-6 7.91
50.0 4.06 × 10-6 9.89
60.0 4.87 × 10-6 11.9
70.0 5.68 × 10-6 13.8
80.0 6.49 × 10-6 15.8
90.0 7.30 × 10-6 17.8
100 8.12 × 10-6 19.8
200 1.62 × 10-5 39.6
300 2.43 × 10-5 59.3
400 3.25 × 10-5 79.1
500 4.06 × 10-5 98.9
600 4.87 × 10-5 119
700 5.68 × 10-5 138
800 6.49 × 10-5 158
900 7.30 × 10-5 178
1000 8.12 × 10-5 198
2000 1.62 × 10-4 396
3000 2.43 × 10-4 593
4000 3.25 × 10-4 791
5000 4.06 × 10-4 989
6000 4.87 × 10-4 1190
7000 5.68 × 10-4 1380
8000 6.49 × 10-4 1580
9000 7.30 × 10-4 1780
1.00 × 104 8.12 × 10-4 1980
2.00 × 104 0.00162 3960
3.00 × 104 0.00243 5930
4.00 × 104 0.00325 7910
5.00 × 104 0.00406 9890
6.00 × 104 0.00487 1.19 × 104
7.00 × 104 0.00568 1.38 × 104
8.00 × 104 0.00649 1.58 × 104
9.00 × 104 0.00730 1.78 × 104
1.00 × 105 0.00812 1.98 × 104
2.00 × 105 0.0162 3.96 × 104
3.00 × 105 0.0243 5.93 × 104
4.00 × 105 0.0325 7.91 × 104
5.00 × 105 0.0406 9.89 × 104
6.00 × 105 0.0487 1.19 × 105
7.00 × 105 0.0568 1.38 × 105
8.00 × 105 0.0649 1.58 × 105
9.00 × 105 0.0730 1.78 × 105
1.00 × 106 0.0812 1.98 × 105
1.50 × 106 0.122 2.97 × 105
Steel I Beam: W14 × 38 (Wide Flange 14 inch tall × 38 lbf/ft)
L = 5.00 ft
P (lbf/ft) w_max (in) stress_max (psi)
38.0 2.38 × 10-5 20.9
40.0 2.51 × 10-5 22.0
50.0 3.13 × 10-5 27.5
60.0 3.76 × 10-5 33.0
70.0 4.38 × 10-5 38.5
80.0 5.01 × 10-5 43.9
90.0 5.64 × 10-5 49.4
100 6.26 × 10-5 54.9
200 1.25 × 10-4 110
300 1.88 × 10-4 165
400 2.51 × 10-4 220
500 3.13 × 10-4 275
600 3.76 × 10-4 330
700 4.38 × 10-4 385
800 5.01 × 10-4 439
900 5.64 × 10-4 494
1000 6.26 × 10-4 549
2000 0.00125 1100
3000 0.00188 1650
4000 0.00251 2200
5000 0.00313 2750
6000 0.00376 3300
7000 0.00438 3850
8000 0.00501 4390
9000 0.00564 4940
1.00 × 104 0.00626 5490
2.00 × 104 0.0125 1.10 × 104
3.00 × 104 0.0188 1.65 × 104
4.00 × 104 0.0251 2.20 × 104
5.00 × 104 0.0313 2.75 × 104
6.00 × 104 0.0376 3.30 × 104
7.00 × 104 0.0438 3.85 × 104
8.00 × 104 0.0501 4.39 × 104
9.00 × 104 0.0564 4.94 × 104
1.00 × 105 0.0626 5.49 × 104
2.00 × 105 0.125 1.10 × 105
3.00 × 105 0.188 1.65 × 105
4.00 × 105 0.251 2.20 × 105
5.00 × 105 0.313 2.75 × 105
5.41 × 105 0.339 2.97 × 105
Steel I Beam: W14 × 38 (Wide Flange 14 inch tall × 38 lbf/ft)
L = 10.0 ft
P (lbf/ft) w_max (in) stress_max (psi)
38.0 3.81 × 10-4 83.5
40.0 4.01 × 10-4 87.9
50.0 5.01 × 10-4 110
60.0 6.01 × 10-4 132
70.0 7.01 × 10-4 154
80.0 8.02 × 10-4 176
90.0 9.02 × 10-4 198
100 0.00100 220
200 0.00200 439
300 0.00301 659
400 0.00401 879
500 0.00501 1100
600 0.00601 1320
700 0.00701 1540
800 0.00802 1760
900 0.00902 1980
1000 0.0100 2200
2000 0.0200 4390
3000 0.0301 6590
4000 0.0401 8790
5000 0.0501 1.10 × 104
6000 0.0601 1.32 × 104
7000 0.0701 1.54 × 104
8000 0.0802 1.76 × 104
9000 0.0902 1.98 × 104
1.00 × 104 0.100 2.20 × 104
2.00 × 104 0.200 4.39 × 104
3.00 × 104 0.301 6.59 × 104
4.00 × 104 0.401 8.79 × 104
5.00 × 104 0.501 1.10 × 105
6.00 × 104 0.601 1.32 × 105
7.00 × 104 0.701 1.54 × 105
8.00 × 104 0.802 1.76 × 105
9.00 × 104 0.902 1.98 × 105
1.00 × 105 1.00 2.20 × 105
1.35 × 105 1.35 2.97 × 105
Steel I Beam: W14 × 38 (Wide Flange 14 inch tall × 38 lbf/ft)
L = 15.0 ft
P (lbf/ft) w_max (in) stress_max (psi)
38.0 0.00193 188
40.0 0.00203 198
50.0 0.00254 247
60.0 0.00304 297
70.0 0.00355 346
80.0 0.00406 396
90.0 0.00457 445
100 0.00507 494
200 0.0101 989
300 0.0152 1480
400 0.0203 1980
500 0.0254 2470
600 0.0304 2970
700 0.0355 3460
800 0.0406 3960
900 0.0457 4450
1000 0.0507 4940
2000 0.101 9890
3000 0.152 1.48 × 104
4000 0.203 1.98 × 104
5000 0.254 2.47 × 104
6000 0.304 2.97 × 104
7000 0.355 3.46 × 104
8000 0.406 3.96 × 104
9000 0.457 4.45 × 104
1.00 × 104 0.507 4.94 × 104
2.00 × 104 1.01 9.89 × 104
3.00 × 104 1.52 1.48 × 105
4.00 × 104 2.03 1.98 × 105
5.00 × 104 2.54 2.47 × 105
6.00 × 104 3.04 2.97 × 105
6.01 × 104 3.05 2.97 × 105
Steel I Beam: W14 × 38 (Wide Flange 14 inch tall × 38 lbf/ft)
L = 20.0 ft
P (lbf/ft) w_max (in) stress_max (psi)
38.0 0.00609 334
40.0 0.00641 352
50.0 0.00802 439
60.0 0.00962 527
70.0 0.0112 615
80.0 0.0128 703
90.0 0.0144 791
100 0.0160 879
200 0.0321 1760
300 0.0481 2640
400 0.0641 3520
500 0.0802 4390
600 0.0962 5270
700 0.112 6150
800 0.128 7030
900 0.144 7910
1000 0.160 8790
2000 0.321 1.76 × 104
3000 0.481 2.64 × 104
4000 0.641 3.52 × 104
5000 0.802 4.39 × 104
6000 0.962 5.27 × 104
7000 1.12 6.15 × 104
8000 1.28 7.03 × 104
9000 1.44 7.91 × 104
1.00 × 104 1.60 8.79 × 104
2.00 × 104 3.21 1.76 × 105
3.00 × 104 4.81 2.64 × 105
3.38 × 104 5.42 2.97 × 105
Steel I Beam: W14 × 38 (Wide Flange 14 inch tall × 38 lbf/ft)
L = 25.0 ft
P (lbf/ft) w_max (in) stress_max (psi)
38.0 0.0149 522
40.0 0.0157 549
50.0 0.0196 687
60.0 0.0235 824
70.0 0.0274 961
80.0 0.0313 1100
90.0 0.0352 1240
100 0.0391 1370
200 0.0783 2750
300 0.117 4120
400 0.157 5490
500 0.196 6870
600 0.235 8240
700 0.274 9610
800 0.313 1.10 × 104
900 0.352 1.24 × 104
1000 0.391 1.37 × 104
2000 0.783 2.75 × 104
3000 1.17 4.12 × 104
4000 1.57 5.49 × 104
5000 1.96 6.87 × 104
6000 2.35 8.24 × 104
7000 2.74 9.61 × 104
8000 3.13 1.10 × 105
9000 3.52 1.24 × 105
1.00 × 104 3.91 1.37 × 105
2.00 × 104 7.83 2.75 × 105
2.16 × 104 8.47 2.97 × 105
Steel I Beam: W14 × 38 (Wide Flange 14 inch tall × 38 lbf/ft)
L = 30.0 ft
P (lbf/ft) w_max (in) stress_max (psi)
38.0 0.0308 752
40.0 0.0325 791
50.0 0.0406 989
60.0 0.0487 1190
70.0 0.0568 1380
80.0 0.0649 1580
90.0 0.0730 1780
100 0.0812 1980
200 0.162 3960
300 0.243 5930
400 0.325 7910
500 0.406 9890
600 0.487 1.19 × 104
700 0.568 1.38 × 104
800 0.649 1.58 × 104
900 0.730 1.78 × 104
1000 0.812 1.98 × 104
2000 1.62 3.96 × 104
3000 2.43 5.93 × 104
4000 3.25 7.91 × 104
5000 4.06 9.89 × 104
6000 4.87 1.19 × 105
7000 5.68 1.38 × 105
8000 6.49 1.58 × 105
9000 7.30 1.78 × 105
1.00 × 104 8.12 1.98 × 105
1.50 × 104 12.2 2.97 × 105
Steel I Beam: W14 × 38 (Wide Flange 14 inch tall × 38 lbf/ft)
L = 40.0 ft
P (lbf/ft) w_max (in) stress_max (psi)
38.0 0.0975 1340
40.0 0.103 1410
50.0 0.128 1760
60.0 0.154 2110
70.0 0.180 2460
80.0 0.205 2810
90.0 0.231 3160
100 0.257 3520
200 0.513 7030
300 0.770 1.05 × 104
400 1.03 1.41 × 104
500 1.28 1.76 × 104
600 1.54 2.11 × 104
700 1.80 2.46 × 104
800 2.05 2.81 × 104
900 2.31 3.16 × 104
1000 2.57 3.52 × 104
2000 5.13 7.03 × 104
3000 7.70 1.05 × 105
4000 10.3 1.41 × 105
5000 12.8 1.76 × 105
5500 14.1 1.93 × 105
Steel I Beam: W14 × 38 (Wide Flange 14 inch tall × 38 lbf/ft)
L = 50.0 ft
P (lbf/ft) w_max (in) stress_max (psi)
38.0 0.238 2090
40.0 0.251 2200
50.0 0.313 2750
60.0 0.376 3300
70.0 0.438 3850
80.0 0.501 4390
90.0 0.564 4940
100 0.626 5490
200 1.25 1.10 × 104
300 1.88 1.65 × 104
400 2.51 2.20 × 104
500 3.13 2.75 × 104
600 3.76 3.30 × 104
700 4.38 3.85 × 104
800 5.01 4.39 × 104
900 5.64 4.94 × 104
1000 6.26 5.49 × 104
2000 12.5 1.10 × 105
2250 14.1 1.24 × 105
Steel I Beam: W14 × 38 (Wide Flange 14 inch tall × 38 lbf/ft)
L = 60.0 ft
P (lbf/ft) w_max (in) stress_max (psi)
38.0 0.493 3010
40.0 0.519 3160
50.0 0.649 3960
60.0 0.779 4750
70.0 0.909 5540
80.0 1.04 6330
90.0 1.17 7120
100 1.30 7910
200 2.60 1.58 × 104
300 3.90 2.37 × 104
400 5.19 3.16 × 104
500 6.49 3.96 × 104
600 7.79 4.75 × 104
700 9.09 5.54 × 104
800 10.4 6.33 × 104
900 11.7 7.12 × 104
1000 13.0 7.91 × 104
1090 14.1 8.59 × 104
Steel I Beam: W14 × 38 (Wide Flange 14 inch tall × 38 lbf/ft)
L = 70.0 ft
P (lbf/ft) w_max (in) stress_max (psi)
38.0 0.914 4090
40.0 0.962 4310
50.0 1.20 5380
60.0 1.44 6460
70.0 1.68 7540
80.0 1.92 8610
90.0 2.17 9690
100 2.41 1.08 × 104
200 4.81 2.15 × 104
300 7.22 3.23 × 104
400 9.62 4.31 × 104
500 12.0 5.38 × 104
586 14.1 6.31 × 104
Steel I Beam: W14 × 38 (Wide Flange 14 inch tall × 38 lbf/ft)
L = 80.0 ft
P (lbf/ft) w_max (in) stress_max (psi)
38.0 1.56 5340
40.0 1.64 5630
50.0 2.05 7030
60.0 2.46 8440
70.0 2.87 9840
80.0 3.28 1.13 × 104
90.0 3.69 1.27 × 104
100 4.10 1.41 × 104
200 8.21 2.81 × 104
300 12.3 4.22 × 104
344 14.1 4.83 × 104
Steel I Beam: W14 × 38 (Wide Flange 14 inch tall × 38 lbf/ft)
L = 90.0 ft
P (lbf/ft) w_max (in) stress_max (psi)
38.0 2.50 6760
40.0 2.63 7120
50.0 3.29 8900
60.0 3.94 1.07 × 104
70.0 4.60 1.25 × 104
80.0 5.26 1.42 × 104
90.0 5.92 1.60 × 104
100 6.57 1.78 × 104
200 13.1 3.56 × 104
214 14.1 3.82 × 104
Steel I Beam: W14 × 38 (Wide Flange 14 inch tall × 38 lbf/ft)
L = 100 ft
P (lbf/ft) w_max (in) stress_max (psi)
38.0 3.81 8350
40.0 4.01 8790
50.0 5.01 1.10 × 104
60.0 6.01 1.32 × 104
70.0 7.01 1.54 × 104
80.0 8.02 1.76 × 104
90.0 9.02 1.98 × 104
100 10.0 2.20 × 104
141 14.1 3.09 × 104
Steel I Beam: W14 × 38 (Wide Flange 14 inch tall × 38 lbf/ft)
L = 125 ft
P (lbf/ft) w_max (in) stress_max (psi)
38.0 9.30 1.30 × 104
40.0 9.79 1.37 × 104
50.0 12.2 1.72 × 104
57.6 14.1 1.98 × 104
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