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Wide Flange Steel I Beam: W16 × 50
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Glossary » Beams » Simply Supported » Uniformly Distributed Load » Two Equal Spans » Wide Flange Steel I Beam » W16 × 50
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 = 659 in4) for the W16 × 50 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
L = 150 ft
  
Steel I Beam: W16 × 50 (Wide Flange 16 inch tall × 50 lbf/ft)
L = 3.00 ft
P (lbf/ft) w_max (in) stress_max (psi)
50.0 1.82 × 10-6 8.33
60.0 2.18 × 10-6 9.99
70.0 2.54 × 10-6 11.7
80.0 2.91 × 10-6 13.3
90.0 3.27 × 10-6 15.0
100 3.63 × 10-6 16.7
200 7.26 × 10-6 33.3
300 1.09 × 10-5 50.0
400 1.45 × 10-5 66.6
500 1.82 × 10-5 83.3
600 2.18 × 10-5 99.9
700 2.54 × 10-5 117
800 2.91 × 10-5 133
900 3.27 × 10-5 150
1000 3.63 × 10-5 167
2000 7.26 × 10-5 333
3000 1.09 × 10-4 500
4000 1.45 × 10-4 666
5000 1.82 × 10-4 833
6000 2.18 × 10-4 999
7000 2.54 × 10-4 1170
8000 2.91 × 10-4 1330
9000 3.27 × 10-4 1500
1.00 × 104 3.63 × 10-4 1670
2.00 × 104 7.26 × 10-4 3330
3.00 × 104 0.00109 5000
4.00 × 104 0.00145 6660
5.00 × 104 0.00182 8330
6.00 × 104 0.00218 9990
7.00 × 104 0.00254 1.17 × 104
8.00 × 104 0.00291 1.33 × 104
9.00 × 104 0.00327 1.50 × 104
1.00 × 105 0.00363 1.67 × 104
2.00 × 105 0.00726 3.33 × 104
3.00 × 105 0.0109 5.00 × 104
4.00 × 105 0.0145 6.66 × 104
5.00 × 105 0.0182 8.33 × 104
6.00 × 105 0.0218 9.99 × 104
7.00 × 105 0.0254 1.17 × 105
8.00 × 105 0.0291 1.33 × 105
9.00 × 105 0.0327 1.50 × 105
1.00 × 106 0.0363 1.67 × 105
1.78 × 106 0.0648 2.97 × 105
Steel I Beam: W16 × 50 (Wide Flange 16 inch tall × 50 lbf/ft)
L = 5.00 ft
P (lbf/ft) w_max (in) stress_max (psi)
50.0 1.40 × 10-5 23.1
60.0 1.68 × 10-5 27.8
70.0 1.96 × 10-5 32.4
80.0 2.24 × 10-5 37.0
90.0 2.52 × 10-5 41.6
100 2.80 × 10-5 46.3
200 5.60 × 10-5 92.5
300 8.41 × 10-5 139
400 1.12 × 10-4 185
500 1.40 × 10-4 231
600 1.68 × 10-4 278
700 1.96 × 10-4 324
800 2.24 × 10-4 370
900 2.52 × 10-4 416
1000 2.80 × 10-4 463
2000 5.60 × 10-4 925
3000 8.41 × 10-4 1390
4000 0.00112 1850
5000 0.00140 2310
6000 0.00168 2780
7000 0.00196 3240
8000 0.00224 3700
9000 0.00252 4160
1.00 × 104 0.00280 4630
2.00 × 104 0.00560 9250
3.00 × 104 0.00841 1.39 × 104
4.00 × 104 0.0112 1.85 × 104
5.00 × 104 0.0140 2.31 × 104
6.00 × 104 0.0168 2.78 × 104
7.00 × 104 0.0196 3.24 × 104
8.00 × 104 0.0224 3.70 × 104
9.00 × 104 0.0252 4.16 × 104
1.00 × 105 0.0280 4.63 × 104
2.00 × 105 0.0560 9.25 × 104
3.00 × 105 0.0841 1.39 × 105
4.00 × 105 0.112 1.85 × 105
5.00 × 105 0.140 2.31 × 105
6.00 × 105 0.168 2.78 × 105
6.42 × 105 0.180 2.97 × 105
Steel I Beam: W16 × 50 (Wide Flange 16 inch tall × 50 lbf/ft)
L = 10.0 ft
P (lbf/ft) w_max (in) stress_max (psi)
50.0 2.24 × 10-4 92.5
60.0 2.69 × 10-4 111
70.0 3.14 × 10-4 130
80.0 3.59 × 10-4 148
90.0 4.04 × 10-4 167
100 4.48 × 10-4 185
200 8.97 × 10-4 370
300 0.00135 555
400 0.00179 740
500 0.00224 925
600 0.00269 1110
700 0.00314 1300
800 0.00359 1480
900 0.00404 1670
1000 0.00448 1850
2000 0.00897 3700
3000 0.0135 5550
4000 0.0179 7400
5000 0.0224 9250
6000 0.0269 1.11 × 104
7000 0.0314 1.30 × 104
8000 0.0359 1.48 × 104
9000 0.0404 1.67 × 104
1.00 × 104 0.0448 1.85 × 104
2.00 × 104 0.0897 3.70 × 104
3.00 × 104 0.135 5.55 × 104
4.00 × 104 0.179 7.40 × 104
5.00 × 104 0.224 9.25 × 104
6.00 × 104 0.269 1.11 × 105
7.00 × 104 0.314 1.30 × 105
8.00 × 104 0.359 1.48 × 105
9.00 × 104 0.404 1.67 × 105
1.00 × 105 0.448 1.85 × 105
1.61 × 105 0.720 2.97 × 105
Steel I Beam: W16 × 50 (Wide Flange 16 inch tall × 50 lbf/ft)
L = 15.0 ft
P (lbf/ft) w_max (in) stress_max (psi)
50.0 0.00113 208
60.0 0.00136 250
70.0 0.00159 291
80.0 0.00182 333
90.0 0.00204 375
100 0.00227 416
200 0.00454 833
300 0.00681 1250
400 0.00908 1670
500 0.0113 2080
600 0.0136 2500
700 0.0159 2910
800 0.0182 3330
900 0.0204 3750
1000 0.0227 4160
2000 0.0454 8330
3000 0.0681 1.25 × 104
4000 0.0908 1.67 × 104
5000 0.113 2.08 × 104
6000 0.136 2.50 × 104
7000 0.159 2.91 × 104
8000 0.182 3.33 × 104
9000 0.204 3.75 × 104
1.00 × 104 0.227 4.16 × 104
2.00 × 104 0.454 8.33 × 104
3.00 × 104 0.681 1.25 × 105
4.00 × 104 0.908 1.67 × 105
5.00 × 104 1.13 2.08 × 105
6.00 × 104 1.36 2.50 × 105
7.00 × 104 1.59 2.91 × 105
7.13 × 104 1.62 2.97 × 105
Steel I Beam: W16 × 50 (Wide Flange 16 inch tall × 50 lbf/ft)
L = 20.0 ft
P (lbf/ft) w_max (in) stress_max (psi)
50.0 0.00359 370
60.0 0.00430 444
70.0 0.00502 518
80.0 0.00574 592
90.0 0.00646 666
100 0.00717 740
200 0.0143 1480
300 0.0215 2220
400 0.0287 2960
500 0.0359 3700
600 0.0430 4440
700 0.0502 5180
800 0.0574 5920
900 0.0646 6660
1000 0.0717 7400
2000 0.143 1.48 × 104
3000 0.215 2.22 × 104
4000 0.287 2.96 × 104
5000 0.359 3.70 × 104
6000 0.430 4.44 × 104
7000 0.502 5.18 × 104
8000 0.574 5.92 × 104
9000 0.646 6.66 × 104
1.00 × 104 0.717 7.40 × 104
2.00 × 104 1.43 1.48 × 105
3.00 × 104 2.15 2.22 × 105
4.00 × 104 2.87 2.96 × 105
4.01 × 104 2.88 2.97 × 105
Steel I Beam: W16 × 50 (Wide Flange 16 inch tall × 50 lbf/ft)
L = 25.0 ft
P (lbf/ft) w_max (in) stress_max (psi)
50.0 0.00876 578
60.0 0.0105 694
70.0 0.0123 810
80.0 0.0140 925
90.0 0.0158 1040
100 0.0175 1160
200 0.0350 2310
300 0.0525 3470
400 0.0701 4630
500 0.0876 5780
600 0.105 6940
700 0.123 8100
800 0.140 9250
900 0.158 1.04 × 104
1000 0.175 1.16 × 104
2000 0.350 2.31 × 104
3000 0.525 3.47 × 104
4000 0.701 4.63 × 104
5000 0.876 5.78 × 104
6000 1.05 6.94 × 104
7000 1.23 8.10 × 104
8000 1.40 9.25 × 104
9000 1.58 1.04 × 105
1.00 × 104 1.75 1.16 × 105
2.00 × 104 3.50 2.31 × 105
2.57 × 104 4.50 2.97 × 105
Steel I Beam: W16 × 50 (Wide Flange 16 inch tall × 50 lbf/ft)
L = 30.0 ft
P (lbf/ft) w_max (in) stress_max (psi)
50.0 0.0182 833
60.0 0.0218 999
70.0 0.0254 1170
80.0 0.0291 1330
90.0 0.0327 1500
100 0.0363 1670
200 0.0726 3330
300 0.109 5000
400 0.145 6660
500 0.182 8330
600 0.218 9990
700 0.254 1.17 × 104
800 0.291 1.33 × 104
900 0.327 1.50 × 104
1000 0.363 1.67 × 104
2000 0.726 3.33 × 104
3000 1.09 5.00 × 104
4000 1.45 6.66 × 104
5000 1.82 8.33 × 104
6000 2.18 9.99 × 104
7000 2.54 1.17 × 105
8000 2.91 1.33 × 105
9000 3.27 1.50 × 105
1.00 × 104 3.63 1.67 × 105
1.78 × 104 6.48 2.97 × 105
Steel I Beam: W16 × 50 (Wide Flange 16 inch tall × 50 lbf/ft)
L = 40.0 ft
P (lbf/ft) w_max (in) stress_max (psi)
50.0 0.0574 1480
60.0 0.0689 1780
70.0 0.0804 2070
80.0 0.0918 2370
90.0 0.103 2660
100 0.115 2960
200 0.230 5920
300 0.344 8880
400 0.459 1.18 × 104
500 0.574 1.48 × 104
600 0.689 1.78 × 104
700 0.804 2.07 × 104
800 0.918 2.37 × 104
900 1.03 2.66 × 104
1000 1.15 2.96 × 104
2000 2.30 5.92 × 104
3000 3.44 8.88 × 104
4000 4.59 1.18 × 105
5000 5.74 1.48 × 105
6000 6.89 1.78 × 105
7000 8.04 2.07 × 105
8000 9.18 2.37 × 105
9000 10.3 2.66 × 105
1.00 × 104 11.5 2.96 × 105
1.00 × 104 11.5 2.97 × 105
Steel I Beam: W16 × 50 (Wide Flange 16 inch tall × 50 lbf/ft)
L = 50.0 ft
P (lbf/ft) w_max (in) stress_max (psi)
50.0 0.140 2310
60.0 0.168 2780
70.0 0.196 3240
80.0 0.224 3700
90.0 0.252 4160
100 0.280 4630
200 0.560 9250
300 0.841 1.39 × 104
400 1.12 1.85 × 104
500 1.40 2.31 × 104
600 1.68 2.78 × 104
700 1.96 3.24 × 104
800 2.24 3.70 × 104
900 2.52 4.16 × 104
1000 2.80 4.63 × 104
2000 5.60 9.25 × 104
3000 8.41 1.39 × 105
4000 11.2 1.85 × 105
5000 14.0 2.31 × 105
5800 16.3 2.68 × 105
Steel I Beam: W16 × 50 (Wide Flange 16 inch tall × 50 lbf/ft)
L = 60.0 ft
P (lbf/ft) w_max (in) stress_max (psi)
50.0 0.291 3330
60.0 0.349 4000
70.0 0.407 4660
80.0 0.465 5330
90.0 0.523 6000
100 0.581 6660
200 1.16 1.33 × 104
300 1.74 2.00 × 104
400 2.32 2.66 × 104
500 2.91 3.33 × 104
600 3.49 4.00 × 104
700 4.07 4.66 × 104
800 4.65 5.33 × 104
900 5.23 6.00 × 104
1000 5.81 6.66 × 104
2000 11.6 1.33 × 105
2800 16.3 1.86 × 105
Steel I Beam: W16 × 50 (Wide Flange 16 inch tall × 50 lbf/ft)
L = 70.0 ft
P (lbf/ft) w_max (in) stress_max (psi)
50.0 0.538 4530
60.0 0.646 5440
70.0 0.754 6350
80.0 0.861 7250
90.0 0.969 8160
100 1.08 9070
200 2.15 1.81 × 104
300 3.23 2.72 × 104
400 4.31 3.63 × 104
500 5.38 4.53 × 104
600 6.46 5.44 × 104
700 7.54 6.35 × 104
800 8.61 7.25 × 104
900 9.69 8.16 × 104
1000 10.8 9.07 × 104
1510 16.3 1.37 × 105
Steel I Beam: W16 × 50 (Wide Flange 16 inch tall × 50 lbf/ft)
L = 80.0 ft
P (lbf/ft) w_max (in) stress_max (psi)
50.0 0.918 5920
60.0 1.10 7110
70.0 1.29 8290
80.0 1.47 9470
90.0 1.65 1.07 × 104
100 1.84 1.18 × 104
200 3.67 2.37 × 104
300 5.51 3.55 × 104
400 7.35 4.74 × 104
500 9.18 5.92 × 104
600 11.0 7.11 × 104
700 12.9 8.29 × 104
800 14.7 9.47 × 104
885 16.3 1.05 × 105
Steel I Beam: W16 × 50 (Wide Flange 16 inch tall × 50 lbf/ft)
L = 90.0 ft
P (lbf/ft) w_max (in) stress_max (psi)
50.0 1.47 7490
60.0 1.77 8990
70.0 2.06 1.05 × 104
80.0 2.35 1.20 × 104
90.0 2.65 1.35 × 104
100 2.94 1.50 × 104
200 5.88 3.00 × 104
300 8.83 4.50 × 104
400 11.8 6.00 × 104
500 14.7 7.49 × 104
553 16.3 8.28 × 104
Steel I Beam: W16 × 50 (Wide Flange 16 inch tall × 50 lbf/ft)
L = 100 ft
P (lbf/ft) w_max (in) stress_max (psi)
50.0 2.24 9250
60.0 2.69 1.11 × 104
70.0 3.14 1.30 × 104
80.0 3.59 1.48 × 104
90.0 4.04 1.67 × 104
100 4.48 1.85 × 104
200 8.97 3.70 × 104
300 13.5 5.55 × 104
363 16.3 6.71 × 104
Steel I Beam: W16 × 50 (Wide Flange 16 inch tall × 50 lbf/ft)
L = 125 ft
P (lbf/ft) w_max (in) stress_max (psi)
50.0 5.47 1.45 × 104
60.0 6.57 1.73 × 104
70.0 7.66 2.02 × 104
80.0 8.76 2.31 × 104
90.0 9.85 2.60 × 104
100 10.9 2.89 × 104
149 16.3 4.29 × 104
Steel I Beam: W16 × 50 (Wide Flange 16 inch tall × 50 lbf/ft)
L = 150 ft
P (lbf/ft) w_max (in) stress_max (psi)
50.0 11.3 2.08 × 104
60.0 13.6 2.50 × 104
70.0 15.9 2.91 × 104
71.6 16.3 2.98 × 104
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