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Wide Flange Steel I Beam: W14 × 43
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Glossary » Beams » Simply Supported » Uniformly Distributed Load » Two Equal Spans » Wide Flange Steel I Beam » W14 × 43
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 = 428 in4) for the W14 × 43 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 × 43 (Wide Flange 14 inch tall × 43 lbf/ft)
L = 3.00 ft
P (lbf/ft) w_max (in) stress_max (psi)
43.0 2.40 × 10-6 9.26
50.0 2.80 × 10-6 10.8
60.0 3.36 × 10-6 12.9
70.0 3.91 × 10-6 15.1
80.0 4.47 × 10-6 17.2
90.0 5.03 × 10-6 19.4
100 5.59 × 10-6 21.5
200 1.12 × 10-5 43.1
300 1.68 × 10-5 64.6
400 2.24 × 10-5 86.2
500 2.80 × 10-5 108
600 3.36 × 10-5 129
700 3.91 × 10-5 151
800 4.47 × 10-5 172
900 5.03 × 10-5 194
1000 5.59 × 10-5 215
2000 1.12 × 10-4 431
3000 1.68 × 10-4 646
4000 2.24 × 10-4 862
5000 2.80 × 10-4 1080
6000 3.36 × 10-4 1290
7000 3.91 × 10-4 1510
8000 4.47 × 10-4 1720
9000 5.03 × 10-4 1940
1.00 × 104 5.59 × 10-4 2150
2.00 × 104 0.00112 4310
3.00 × 104 0.00168 6460
4.00 × 104 0.00224 8620
5.00 × 104 0.00280 1.08 × 104
6.00 × 104 0.00336 1.29 × 104
7.00 × 104 0.00391 1.51 × 104
8.00 × 104 0.00447 1.72 × 104
9.00 × 104 0.00503 1.94 × 104
1.00 × 105 0.00559 2.15 × 104
2.00 × 105 0.0112 4.31 × 104
3.00 × 105 0.0168 6.46 × 104
4.00 × 105 0.0224 8.62 × 104
5.00 × 105 0.0280 1.08 × 105
6.00 × 105 0.0336 1.29 × 105
7.00 × 105 0.0391 1.51 × 105
8.00 × 105 0.0447 1.72 × 105
9.00 × 105 0.0503 1.94 × 105
1.00 × 106 0.0559 2.15 × 105
1.38 × 106 0.0771 2.97 × 105
Steel I Beam: W14 × 43 (Wide Flange 14 inch tall × 43 lbf/ft)
L = 5.00 ft
P (lbf/ft) w_max (in) stress_max (psi)
43.0 1.86 × 10-5 25.7
50.0 2.16 × 10-5 29.9
60.0 2.59 × 10-5 35.9
70.0 3.02 × 10-5 41.9
80.0 3.45 × 10-5 47.9
90.0 3.88 × 10-5 53.9
100 4.31 × 10-5 59.8
200 8.63 × 10-5 120
300 1.29 × 10-4 180
400 1.73 × 10-4 239
500 2.16 × 10-4 299
600 2.59 × 10-4 359
700 3.02 × 10-4 419
800 3.45 × 10-4 479
900 3.88 × 10-4 539
1000 4.31 × 10-4 598
2000 8.63 × 10-4 1200
3000 0.00129 1800
4000 0.00173 2390
5000 0.00216 2990
6000 0.00259 3590
7000 0.00302 4190
8000 0.00345 4790
9000 0.00388 5390
1.00 × 104 0.00431 5980
2.00 × 104 0.00863 1.20 × 104
3.00 × 104 0.0129 1.80 × 104
4.00 × 104 0.0173 2.39 × 104
5.00 × 104 0.0216 2.99 × 104
6.00 × 104 0.0259 3.59 × 104
7.00 × 104 0.0302 4.19 × 104
8.00 × 104 0.0345 4.79 × 104
9.00 × 104 0.0388 5.39 × 104
1.00 × 105 0.0431 5.98 × 104
2.00 × 105 0.0863 1.20 × 105
3.00 × 105 0.129 1.80 × 105
4.00 × 105 0.173 2.39 × 105
4.96 × 105 0.214 2.97 × 105
Steel I Beam: W14 × 43 (Wide Flange 14 inch tall × 43 lbf/ft)
L = 10.0 ft
P (lbf/ft) w_max (in) stress_max (psi)
43.0 2.97 × 10-4 103
50.0 3.45 × 10-4 120
60.0 4.14 × 10-4 144
70.0 4.83 × 10-4 168
80.0 5.52 × 10-4 191
90.0 6.21 × 10-4 215
100 6.90 × 10-4 239
200 0.00138 479
300 0.00207 718
400 0.00276 957
500 0.00345 1200
600 0.00414 1440
700 0.00483 1680
800 0.00552 1910
900 0.00621 2150
1000 0.00690 2390
2000 0.0138 4790
3000 0.0207 7180
4000 0.0276 9570
5000 0.0345 1.20 × 104
6000 0.0414 1.44 × 104
7000 0.0483 1.68 × 104
8000 0.0552 1.91 × 104
9000 0.0621 2.15 × 104
1.00 × 104 0.0690 2.39 × 104
2.00 × 104 0.138 4.79 × 104
3.00 × 104 0.207 7.18 × 104
4.00 × 104 0.276 9.57 × 104
5.00 × 104 0.345 1.20 × 105
6.00 × 104 0.414 1.44 × 105
7.00 × 104 0.483 1.68 × 105
8.00 × 104 0.552 1.91 × 105
9.00 × 104 0.621 2.15 × 105
1.00 × 105 0.690 2.39 × 105
1.24 × 105 0.857 2.97 × 105
Steel I Beam: W14 × 43 (Wide Flange 14 inch tall × 43 lbf/ft)
L = 15.0 ft
P (lbf/ft) w_max (in) stress_max (psi)
43.0 0.00150 232
50.0 0.00175 269
60.0 0.00210 323
70.0 0.00245 377
80.0 0.00280 431
90.0 0.00315 485
100 0.00350 539
200 0.00699 1080
300 0.0105 1620
400 0.0140 2150
500 0.0175 2690
600 0.0210 3230
700 0.0245 3770
800 0.0280 4310
900 0.0315 4850
1000 0.0350 5390
2000 0.0699 1.08 × 104
3000 0.105 1.62 × 104
4000 0.140 2.15 × 104
5000 0.175 2.69 × 104
6000 0.210 3.23 × 104
7000 0.245 3.77 × 104
8000 0.280 4.31 × 104
9000 0.315 4.85 × 104
1.00 × 104 0.350 5.39 × 104
2.00 × 104 0.699 1.08 × 105
3.00 × 104 1.05 1.62 × 105
4.00 × 104 1.40 2.15 × 105
5.00 × 104 1.75 2.69 × 105
5.52 × 104 1.93 2.97 × 105
Steel I Beam: W14 × 43 (Wide Flange 14 inch tall × 43 lbf/ft)
L = 20.0 ft
P (lbf/ft) w_max (in) stress_max (psi)
43.0 0.00475 412
50.0 0.00552 479
60.0 0.00663 574
70.0 0.00773 670
80.0 0.00884 766
90.0 0.00994 862
100 0.0110 957
200 0.0221 1910
300 0.0331 2870
400 0.0442 3830
500 0.0552 4790
600 0.0663 5740
700 0.0773 6700
800 0.0884 7660
900 0.0994 8620
1000 0.110 9570
2000 0.221 1.91 × 104
3000 0.331 2.87 × 104
4000 0.442 3.83 × 104
5000 0.552 4.79 × 104
6000 0.663 5.74 × 104
7000 0.773 6.70 × 104
8000 0.884 7.66 × 104
9000 0.994 8.62 × 104
1.00 × 104 1.10 9.57 × 104
2.00 × 104 2.21 1.91 × 105
3.00 × 104 3.31 2.87 × 105
3.10 × 104 3.43 2.97 × 105
Steel I Beam: W14 × 43 (Wide Flange 14 inch tall × 43 lbf/ft)
L = 25.0 ft
P (lbf/ft) w_max (in) stress_max (psi)
43.0 0.0116 643
50.0 0.0135 748
60.0 0.0162 898
70.0 0.0189 1050
80.0 0.0216 1200
90.0 0.0243 1350
100 0.0270 1500
200 0.0539 2990
300 0.0809 4490
400 0.108 5980
500 0.135 7480
600 0.162 8980
700 0.189 1.05 × 104
800 0.216 1.20 × 104
900 0.243 1.35 × 104
1000 0.270 1.50 × 104
2000 0.539 2.99 × 104
3000 0.809 4.49 × 104
4000 1.08 5.98 × 104
5000 1.35 7.48 × 104
6000 1.62 8.98 × 104
7000 1.89 1.05 × 105
8000 2.16 1.20 × 105
9000 2.43 1.35 × 105
1.00 × 104 2.70 1.50 × 105
1.99 × 104 5.35 2.97 × 105
Steel I Beam: W14 × 43 (Wide Flange 14 inch tall × 43 lbf/ft)
L = 30.0 ft
P (lbf/ft) w_max (in) stress_max (psi)
43.0 0.0240 926
50.0 0.0280 1080
60.0 0.0336 1290
70.0 0.0391 1510
80.0 0.0447 1720
90.0 0.0503 1940
100 0.0559 2150
200 0.112 4310
300 0.168 6460
400 0.224 8620
500 0.280 1.08 × 104
600 0.336 1.29 × 104
700 0.391 1.51 × 104
800 0.447 1.72 × 104
900 0.503 1.94 × 104
1000 0.559 2.15 × 104
2000 1.12 4.31 × 104
3000 1.68 6.46 × 104
4000 2.24 8.62 × 104
5000 2.80 1.08 × 105
6000 3.36 1.29 × 105
7000 3.91 1.51 × 105
8000 4.47 1.72 × 105
9000 5.03 1.94 × 105
1.00 × 104 5.59 2.15 × 105
1.38 × 104 7.71 2.97 × 105
Steel I Beam: W14 × 43 (Wide Flange 14 inch tall × 43 lbf/ft)
L = 40.0 ft
P (lbf/ft) w_max (in) stress_max (psi)
43.0 0.0760 1650
50.0 0.0884 1910
60.0 0.106 2300
70.0 0.124 2680
80.0 0.141 3060
90.0 0.159 3450
100 0.177 3830
200 0.353 7660
300 0.530 1.15 × 104
400 0.707 1.53 × 104
500 0.884 1.91 × 104
600 1.06 2.30 × 104
700 1.24 2.68 × 104
800 1.41 3.06 × 104
900 1.59 3.45 × 104
1000 1.77 3.83 × 104
2000 3.53 7.66 × 104
3000 5.30 1.15 × 105
4000 7.07 1.53 × 105
5000 8.84 1.91 × 105
6000 10.6 2.30 × 105
7000 12.4 2.68 × 105
7760 13.7 2.97 × 105
Steel I Beam: W14 × 43 (Wide Flange 14 inch tall × 43 lbf/ft)
L = 50.0 ft
P (lbf/ft) w_max (in) stress_max (psi)
43.0 0.186 2570
50.0 0.216 2990
60.0 0.259 3590
70.0 0.302 4190
80.0 0.345 4790
90.0 0.388 5390
100 0.431 5980
200 0.863 1.20 × 104
300 1.29 1.80 × 104
400 1.73 2.39 × 104
500 2.16 2.99 × 104
600 2.59 3.59 × 104
700 3.02 4.19 × 104
800 3.45 4.79 × 104
900 3.88 5.39 × 104
1000 4.31 5.98 × 104
2000 8.63 1.20 × 105
3000 12.9 1.80 × 105
3170 13.7 1.89 × 105
Steel I Beam: W14 × 43 (Wide Flange 14 inch tall × 43 lbf/ft)
L = 60.0 ft
P (lbf/ft) w_max (in) stress_max (psi)
43.0 0.385 3710
50.0 0.447 4310
60.0 0.537 5170
70.0 0.626 6030
80.0 0.716 6890
90.0 0.805 7760
100 0.895 8620
200 1.79 1.72 × 104
300 2.68 2.59 × 104
400 3.58 3.45 × 104
500 4.47 4.31 × 104
600 5.37 5.17 × 104
700 6.26 6.03 × 104
800 7.16 6.89 × 104
900 8.05 7.76 × 104
1000 8.95 8.62 × 104
1530 13.7 1.32 × 105
Steel I Beam: W14 × 43 (Wide Flange 14 inch tall × 43 lbf/ft)
L = 70.0 ft
P (lbf/ft) w_max (in) stress_max (psi)
43.0 0.713 5040
50.0 0.829 5860
60.0 0.995 7040
70.0 1.16 8210
80.0 1.33 9380
90.0 1.49 1.06 × 104
100 1.66 1.17 × 104
200 3.32 2.35 × 104
300 4.97 3.52 × 104
400 6.63 4.69 × 104
500 8.29 5.86 × 104
600 9.95 7.04 × 104
700 11.6 8.21 × 104
800 13.3 9.38 × 104
824 13.7 9.67 × 104
Steel I Beam: W14 × 43 (Wide Flange 14 inch tall × 43 lbf/ft)
L = 80.0 ft
P (lbf/ft) w_max (in) stress_max (psi)
43.0 1.22 6590
50.0 1.41 7660
60.0 1.70 9190
70.0 1.98 1.07 × 104
80.0 2.26 1.23 × 104
90.0 2.55 1.38 × 104
100 2.83 1.53 × 104
200 5.66 3.06 × 104
300 8.48 4.60 × 104
400 11.3 6.13 × 104
483 13.7 7.40 × 104
Steel I Beam: W14 × 43 (Wide Flange 14 inch tall × 43 lbf/ft)
L = 90.0 ft
P (lbf/ft) w_max (in) stress_max (psi)
43.0 1.95 8340
50.0 2.26 9690
60.0 2.72 1.16 × 104
70.0 3.17 1.36 × 104
80.0 3.62 1.55 × 104
90.0 4.08 1.75 × 104
100 4.53 1.94 × 104
200 9.06 3.88 × 104
300 13.6 5.82 × 104
302 13.7 5.85 × 104
Steel I Beam: W14 × 43 (Wide Flange 14 inch tall × 43 lbf/ft)
L = 100 ft
P (lbf/ft) w_max (in) stress_max (psi)
43.0 2.97 1.03 × 104
50.0 3.45 1.20 × 104
60.0 4.14 1.44 × 104
70.0 4.83 1.68 × 104
80.0 5.52 1.91 × 104
90.0 6.21 2.15 × 104
100 6.90 2.39 × 104
198 13.7 4.74 × 104
Steel I Beam: W14 × 43 (Wide Flange 14 inch tall × 43 lbf/ft)
L = 125 ft
P (lbf/ft) w_max (in) stress_max (psi)
43.0 7.25 1.61 × 104
50.0 8.43 1.87 × 104
60.0 10.1 2.24 × 104
70.0 11.8 2.62 × 104
80.0 13.5 2.99 × 104
81.0 13.7 3.03 × 104
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