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Glossary » Beams » Simply Supported » Uniformly Distributed Load » Single Span » Wide Flange Steel I Beam » W14 × 34
Wide Flange Steel I Beam | Single Span | Two Equal Spans | Three Equal Spans | Four Equal Spans

For a simply supported beam in a single span, the maximum displacement w_max and the maximum normal stress stress_max occur at the center of the beam.
The tabulated data listed in this page are calculated based on the area moment of inertia (Ixx = 340 in4) for the W14 × 34 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: W14 × 34 (Wide Flange 14 inch tall × 34 lbf/ft)
L = 3.00 ft
P (lbf/ft) w_max (in) stress_max (psi)
34.0 5.98 × 10-6 9.44
40.0 7.04 × 10-6 11.1
50.0 8.80 × 10-6 13.9
60.0 1.06 × 10-5 16.7
70.0 1.23 × 10-5 19.4
80.0 1.41 × 10-5 22.2
90.0 1.58 × 10-5 25.0
100 1.76 × 10-5 27.8
200 3.52 × 10-5 55.5
300 5.28 × 10-5 83.3
400 7.04 × 10-5 111
500 8.80 × 10-5 139
600 1.06 × 10-4 167
700 1.23 × 10-4 194
800 1.41 × 10-4 222
900 1.58 × 10-4 250
1000 1.76 × 10-4 278
2000 3.52 × 10-4 555
3000 5.28 × 10-4 833
4000 7.04 × 10-4 1110
5000 8.80 × 10-4 1390
6000 0.00106 1670
7000 0.00123 1940
8000 0.00141 2220
9000 0.00158 2500
1.00 × 104 0.00176 2780
2.00 × 104 0.00352 5550
3.00 × 104 0.00528 8330
4.00 × 104 0.00704 1.11 × 104
5.00 × 104 0.00880 1.39 × 104
6.00 × 104 0.0106 1.67 × 104
7.00 × 104 0.0123 1.94 × 104
8.00 × 104 0.0141 2.22 × 104
9.00 × 104 0.0158 2.50 × 104
1.00 × 105 0.0176 2.78 × 104
2.00 × 105 0.0352 5.55 × 104
3.00 × 105 0.0528 8.33 × 104
4.00 × 105 0.0704 1.11 × 105
5.00 × 105 0.0880 1.39 × 105
6.00 × 105 0.106 1.67 × 105
7.00 × 105 0.123 1.94 × 105
8.00 × 105 0.141 2.22 × 105
9.00 × 105 0.158 2.50 × 105
1.00 × 106 0.176 2.78 × 105
1.07 × 106 0.188 2.97 × 105
Steel I Beam: W14 × 34 (Wide Flange 14 inch tall × 34 lbf/ft)
L = 5.00 ft
P (lbf/ft) w_max (in) stress_max (psi)
34.0 4.62 × 10-5 26.2
40.0 5.43 × 10-5 30.8
50.0 6.79 × 10-5 38.5
60.0 8.15 × 10-5 46.3
70.0 9.51 × 10-5 54.0
80.0 1.09 × 10-4 61.7
90.0 1.22 × 10-4 69.4
100 1.36 × 10-4 77.1
200 2.72 × 10-4 154
300 4.07 × 10-4 231
400 5.43 × 10-4 308
500 6.79 × 10-4 385
600 8.15 × 10-4 463
700 9.51 × 10-4 540
800 0.00109 617
900 0.00122 694
1000 0.00136 771
2000 0.00272 1540
3000 0.00407 2310
4000 0.00543 3080
5000 0.00679 3850
6000 0.00815 4630
7000 0.00951 5400
8000 0.0109 6170
9000 0.0122 6940
1.00 × 104 0.0136 7710
2.00 × 104 0.0272 1.54 × 104
3.00 × 104 0.0407 2.31 × 104
4.00 × 104 0.0543 3.08 × 104
5.00 × 104 0.0679 3.85 × 104
6.00 × 104 0.0815 4.63 × 104
7.00 × 104 0.0951 5.40 × 104
8.00 × 104 0.109 6.17 × 104
9.00 × 104 0.122 6.94 × 104
1.00 × 105 0.136 7.71 × 104
2.00 × 105 0.272 1.54 × 105
3.00 × 105 0.407 2.31 × 105
3.85 × 105 0.523 2.97 × 105
Steel I Beam: W14 × 34 (Wide Flange 14 inch tall × 34 lbf/ft)
L = 10.0 ft
P (lbf/ft) w_max (in) stress_max (psi)
34.0 7.39 × 10-4 105
40.0 8.69 × 10-4 123
50.0 0.00109 154
60.0 0.00130 185
70.0 0.00152 216
80.0 0.00174 247
90.0 0.00196 278
100 0.00217 308
200 0.00435 617
300 0.00652 925
400 0.00869 1230
500 0.0109 1540
600 0.0130 1850
700 0.0152 2160
800 0.0174 2470
900 0.0196 2780
1000 0.0217 3080
2000 0.0435 6170
3000 0.0652 9250
4000 0.0869 1.23 × 104
5000 0.109 1.54 × 104
6000 0.130 1.85 × 104
7000 0.152 2.16 × 104
8000 0.174 2.47 × 104
9000 0.196 2.78 × 104
1.00 × 104 0.217 3.08 × 104
2.00 × 104 0.435 6.17 × 104
3.00 × 104 0.652 9.25 × 104
4.00 × 104 0.869 1.23 × 105
5.00 × 104 1.09 1.54 × 105
6.00 × 104 1.30 1.85 × 105
7.00 × 104 1.52 2.16 × 105
8.00 × 104 1.74 2.47 × 105
9.00 × 104 1.96 2.78 × 105
9.63 × 104 2.09 2.97 × 105
Steel I Beam: W14 × 34 (Wide Flange 14 inch tall × 34 lbf/ft)
L = 15.0 ft
P (lbf/ft) w_max (in) stress_max (psi)
34.0 0.00374 236
40.0 0.00440 278
50.0 0.00550 347
60.0 0.00660 416
70.0 0.00770 486
80.0 0.00880 555
90.0 0.00990 624
100 0.0110 694
200 0.0220 1390
300 0.0330 2080
400 0.0440 2780
500 0.0550 3470
600 0.0660 4160
700 0.0770 4860
800 0.0880 5550
900 0.0990 6240
1000 0.110 6940
2000 0.220 1.39 × 104
3000 0.330 2.08 × 104
4000 0.440 2.78 × 104
5000 0.550 3.47 × 104
6000 0.660 4.16 × 104
7000 0.770 4.86 × 104
8000 0.880 5.55 × 104
9000 0.990 6.24 × 104
1.00 × 104 1.10 6.94 × 104
2.00 × 104 2.20 1.39 × 105
3.00 × 104 3.30 2.08 × 105
4.00 × 104 4.40 2.78 × 105
4.28 × 104 4.71 2.97 × 105
Steel I Beam: W14 × 34 (Wide Flange 14 inch tall × 34 lbf/ft)
L = 20.0 ft
P (lbf/ft) w_max (in) stress_max (psi)
34.0 0.0118 419
40.0 0.0139 493
50.0 0.0174 617
60.0 0.0209 740
70.0 0.0243 863
80.0 0.0278 987
90.0 0.0313 1110
100 0.0348 1230
200 0.0695 2470
300 0.104 3700
400 0.139 4930
500 0.174 6170
600 0.209 7400
700 0.243 8630
800 0.278 9870
900 0.313 1.11 × 104
1000 0.348 1.23 × 104
2000 0.695 2.47 × 104
3000 1.04 3.70 × 104
4000 1.39 4.93 × 104
5000 1.74 6.17 × 104
6000 2.09 7.40 × 104
7000 2.43 8.63 × 104
8000 2.78 9.87 × 104
9000 3.13 1.11 × 105
1.00 × 104 3.48 1.23 × 105
2.00 × 104 6.95 2.47 × 105
2.41 × 104 8.37 2.97 × 105
Steel I Beam: W14 × 34 (Wide Flange 14 inch tall × 34 lbf/ft)
L = 25.0 ft
P (lbf/ft) w_max (in) stress_max (psi)
34.0 0.0289 655
40.0 0.0339 771
50.0 0.0424 964
60.0 0.0509 1160
70.0 0.0594 1350
80.0 0.0679 1540
90.0 0.0764 1730
100 0.0849 1930
200 0.170 3850
300 0.255 5780
400 0.339 7710
500 0.424 9640
600 0.509 1.16 × 104
700 0.594 1.35 × 104
800 0.679 1.54 × 104
900 0.764 1.73 × 104
1000 0.849 1.93 × 104
2000 1.70 3.85 × 104
3000 2.55 5.78 × 104
4000 3.39 7.71 × 104
5000 4.24 9.64 × 104
6000 5.09 1.16 × 105
7000 5.94 1.35 × 105
8000 6.79 1.54 × 105
9000 7.64 1.73 × 105
1.00 × 104 8.49 1.93 × 105
1.54 × 104 13.1 2.97 × 105
Steel I Beam: W14 × 34 (Wide Flange 14 inch tall × 34 lbf/ft)
L = 30.0 ft
P (lbf/ft) w_max (in) stress_max (psi)
34.0 0.0598 944
40.0 0.0704 1110
50.0 0.0880 1390
60.0 0.106 1670
70.0 0.123 1940
80.0 0.141 2220
90.0 0.158 2500
100 0.176 2780
200 0.352 5550
300 0.528 8330
400 0.704 1.11 × 104
500 0.880 1.39 × 104
600 1.06 1.67 × 104
700 1.23 1.94 × 104
800 1.41 2.22 × 104
900 1.58 2.50 × 104
1000 1.76 2.78 × 104
2000 3.52 5.55 × 104
3000 5.28 8.33 × 104
4000 7.04 1.11 × 105
5000 8.80 1.39 × 105
6000 10.6 1.67 × 105
7000 12.3 1.94 × 105
7940 14.0 2.20 × 105
Steel I Beam: W14 × 34 (Wide Flange 14 inch tall × 34 lbf/ft)
L = 40.0 ft
P (lbf/ft) w_max (in) stress_max (psi)
34.0 0.189 1680
40.0 0.222 1970
50.0 0.278 2470
60.0 0.334 2960
70.0 0.389 3450
80.0 0.445 3950
90.0 0.501 4440
100 0.556 4930
200 1.11 9870
300 1.67 1.48 × 104
400 2.22 1.97 × 104
500 2.78 2.47 × 104
600 3.34 2.96 × 104
700 3.89 3.45 × 104
800 4.45 3.95 × 104
900 5.01 4.44 × 104
1000 5.56 4.93 × 104
2000 11.1 9.87 × 104
2510 14.0 1.24 × 105
Steel I Beam: W14 × 34 (Wide Flange 14 inch tall × 34 lbf/ft)
L = 50.0 ft
P (lbf/ft) w_max (in) stress_max (psi)
34.0 0.462 2620
40.0 0.543 3080
50.0 0.679 3850
60.0 0.815 4630
70.0 0.951 5400
80.0 1.09 6170
90.0 1.22 6940
100 1.36 7710
200 2.72 1.54 × 104
300 4.07 2.31 × 104
400 5.43 3.08 × 104
500 6.79 3.85 × 104
600 8.15 4.63 × 104
700 9.51 5.40 × 104
800 10.9 6.17 × 104
900 12.2 6.94 × 104
1000 13.6 7.71 × 104
1030 14.0 7.94 × 104
Steel I Beam: W14 × 34 (Wide Flange 14 inch tall × 34 lbf/ft)
L = 60.0 ft
P (lbf/ft) w_max (in) stress_max (psi)
34.0 0.957 3770
40.0 1.13 4440
50.0 1.41 5550
60.0 1.69 6660
70.0 1.97 7770
80.0 2.25 8880
90.0 2.53 9990
100 2.82 1.11 × 104
200 5.63 2.22 × 104
300 8.45 3.33 × 104
400 11.3 4.44 × 104
496 14.0 5.51 × 104
Steel I Beam: W14 × 34 (Wide Flange 14 inch tall × 34 lbf/ft)
L = 70.0 ft
P (lbf/ft) w_max (in) stress_max (psi)
34.0 1.77 5140
40.0 2.09 6040
50.0 2.61 7560
60.0 3.13 9070
70.0 3.65 1.06 × 104
80.0 4.17 1.21 × 104
90.0 4.70 1.36 × 104
100 5.22 1.51 × 104
200 10.4 3.02 × 104
268 14.0 4.05 × 104
Steel I Beam: W14 × 34 (Wide Flange 14 inch tall × 34 lbf/ft)
L = 80.0 ft
P (lbf/ft) w_max (in) stress_max (psi)
34.0 3.03 6710
40.0 3.56 7890
50.0 4.45 9870
60.0 5.34 1.18 × 104
70.0 6.23 1.38 × 104
80.0 7.12 1.58 × 104
90.0 8.01 1.78 × 104
100 8.90 1.97 × 104
157 14.0 3.10 × 104
Steel I Beam: W14 × 34 (Wide Flange 14 inch tall × 34 lbf/ft)
L = 90.0 ft
P (lbf/ft) w_max (in) stress_max (psi)
34.0 4.85 8490
40.0 5.70 9990
50.0 7.13 1.25 × 104
60.0 8.55 1.50 × 104
70.0 9.98 1.75 × 104
80.0 11.4 2.00 × 104
90.0 12.8 2.25 × 104
98.1 14.0 2.45 × 104
Steel I Beam: W14 × 34 (Wide Flange 14 inch tall × 34 lbf/ft)
L = 100 ft
P (lbf/ft) w_max (in) stress_max (psi)
34.0 7.39 1.05 × 104
40.0 8.69 1.23 × 104
50.0 10.9 1.54 × 104
60.0 13.0 1.85 × 104
64.3 14.0 1.98 × 104
Additional Information
Related Pages
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FREE Publications
Metal 3D Printing Design Guide

Direct Metal Laser Sintering (DMLS) 3D printing for parts with reduced cost and little waste.

Essentials of Manufacturing

Information, coverage of important developments and expert commentary in manufacturing.

Negotiate Your Salary

Learn the best principles to negotiate the salary you deserve!

Selecting the Right 3D Printer

Discover how to choose the right 3D printer for your needs and the key performance attributes to consider.

more publications