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Wide Flange Steel I Beam: W12 × 26
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Glossary » Beams » Simply Supported » Uniformly Distributed Load » Two Equal Spans » Wide Flange Steel I Beam » W12 × 26
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 = 204 in4) for the W12 × 26 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: W12 × 26 (Wide Flange 12 inch tall × 26 lbf/ft)
L = 3.00 ft
P (lbf/ft) w_max (in) stress_max (psi)
26.0 3.05 × 10-6 10.5
30.0 3.52 × 10-6 12.1
40.0 4.69 × 10-6 16.2
50.0 5.87 × 10-6 20.2
60.0 7.04 × 10-6 24.3
70.0 8.21 × 10-6 28.3
80.0 9.39 × 10-6 32.3
90.0 1.06 × 10-5 36.4
100 1.17 × 10-5 40.4
200 2.35 × 10-5 80.9
300 3.52 × 10-5 121
400 4.69 × 10-5 162
500 5.87 × 10-5 202
600 7.04 × 10-5 243
700 8.21 × 10-5 283
800 9.39 × 10-5 323
900 1.06 × 10-4 364
1000 1.17 × 10-4 404
2000 2.35 × 10-4 809
3000 3.52 × 10-4 1210
4000 4.69 × 10-4 1620
5000 5.87 × 10-4 2020
6000 7.04 × 10-4 2430
7000 8.21 × 10-4 2830
8000 9.39 × 10-4 3230
9000 0.00106 3640
1.00 × 104 0.00117 4040
2.00 × 104 0.00235 8090
3.00 × 104 0.00352 1.21 × 104
4.00 × 104 0.00469 1.62 × 104
5.00 × 104 0.00587 2.02 × 104
6.00 × 104 0.00704 2.43 × 104
7.00 × 104 0.00821 2.83 × 104
8.00 × 104 0.00939 3.23 × 104
9.00 × 104 0.0106 3.64 × 104
1.00 × 105 0.0117 4.04 × 104
2.00 × 105 0.0235 8.09 × 104
3.00 × 105 0.0352 1.21 × 105
4.00 × 105 0.0469 1.62 × 105
5.00 × 105 0.0587 2.02 × 105
6.00 × 105 0.0704 2.43 × 105
7.00 × 105 0.0821 2.83 × 105
7.35 × 105 0.0862 2.97 × 105
Steel I Beam: W12 × 26 (Wide Flange 12 inch tall × 26 lbf/ft)
L = 5.00 ft
P (lbf/ft) w_max (in) stress_max (psi)
26.0 2.35 × 10-5 29.2
30.0 2.72 × 10-5 33.7
40.0 3.62 × 10-5 44.9
50.0 4.53 × 10-5 56.2
60.0 5.43 × 10-5 67.4
70.0 6.34 × 10-5 78.6
80.0 7.24 × 10-5 89.9
90.0 8.15 × 10-5 101
100 9.05 × 10-5 112
200 1.81 × 10-4 225
300 2.72 × 10-4 337
400 3.62 × 10-4 449
500 4.53 × 10-4 562
600 5.43 × 10-4 674
700 6.34 × 10-4 786
800 7.24 × 10-4 899
900 8.15 × 10-4 1010
1000 9.05 × 10-4 1120
2000 0.00181 2250
3000 0.00272 3370
4000 0.00362 4490
5000 0.00453 5620
6000 0.00543 6740
7000 0.00634 7860
8000 0.00724 8990
9000 0.00815 1.01 × 104
1.00 × 104 0.00905 1.12 × 104
2.00 × 104 0.0181 2.25 × 104
3.00 × 104 0.0272 3.37 × 104
4.00 × 104 0.0362 4.49 × 104
5.00 × 104 0.0453 5.62 × 104
6.00 × 104 0.0543 6.74 × 104
7.00 × 104 0.0634 7.86 × 104
8.00 × 104 0.0724 8.99 × 104
9.00 × 104 0.0815 1.01 × 105
1.00 × 105 0.0905 1.12 × 105
2.00 × 105 0.181 2.25 × 105
2.64 × 105 0.239 2.97 × 105
Steel I Beam: W12 × 26 (Wide Flange 12 inch tall × 26 lbf/ft)
L = 10.0 ft
P (lbf/ft) w_max (in) stress_max (psi)
26.0 3.77 × 10-4 117
30.0 4.35 × 10-4 135
40.0 5.79 × 10-4 180
50.0 7.24 × 10-4 225
60.0 8.69 × 10-4 270
70.0 0.00101 314
80.0 0.00116 359
90.0 0.00130 404
100 0.00145 449
200 0.00290 899
300 0.00435 1350
400 0.00579 1800
500 0.00724 2250
600 0.00869 2700
700 0.0101 3140
800 0.0116 3590
900 0.0130 4040
1000 0.0145 4490
2000 0.0290 8990
3000 0.0435 1.35 × 104
4000 0.0579 1.80 × 104
5000 0.0724 2.25 × 104
6000 0.0869 2.70 × 104
7000 0.101 3.14 × 104
8000 0.116 3.59 × 104
9000 0.130 4.04 × 104
1.00 × 104 0.145 4.49 × 104
2.00 × 104 0.290 8.99 × 104
3.00 × 104 0.435 1.35 × 105
4.00 × 104 0.579 1.80 × 105
5.00 × 104 0.724 2.25 × 105
6.00 × 104 0.869 2.70 × 105
6.61 × 104 0.958 2.97 × 105
Steel I Beam: W12 × 26 (Wide Flange 12 inch tall × 26 lbf/ft)
L = 15.0 ft
P (lbf/ft) w_max (in) stress_max (psi)
26.0 0.00191 263
30.0 0.00220 303
40.0 0.00293 404
50.0 0.00367 505
60.0 0.00440 607
70.0 0.00513 708
80.0 0.00587 809
90.0 0.00660 910
100 0.00733 1010
200 0.0147 2020
300 0.0220 3030
400 0.0293 4040
500 0.0367 5050
600 0.0440 6070
700 0.0513 7080
800 0.0587 8090
900 0.0660 9100
1000 0.0733 1.01 × 104
2000 0.147 2.02 × 104
3000 0.220 3.03 × 104
4000 0.293 4.04 × 104
5000 0.367 5.05 × 104
6000 0.440 6.07 × 104
7000 0.513 7.08 × 104
8000 0.587 8.09 × 104
9000 0.660 9.10 × 104
1.00 × 104 0.733 1.01 × 105
2.00 × 104 1.47 2.02 × 105
2.94 × 104 2.15 2.97 × 105
Steel I Beam: W12 × 26 (Wide Flange 12 inch tall × 26 lbf/ft)
L = 20.0 ft
P (lbf/ft) w_max (in) stress_max (psi)
26.0 0.00603 467
30.0 0.00695 539
40.0 0.00927 719
50.0 0.0116 899
60.0 0.0139 1080
70.0 0.0162 1260
80.0 0.0185 1440
90.0 0.0209 1620
100 0.0232 1800
200 0.0464 3590
300 0.0695 5390
400 0.0927 7190
500 0.116 8990
600 0.139 1.08 × 104
700 0.162 1.26 × 104
800 0.185 1.44 × 104
900 0.209 1.62 × 104
1000 0.232 1.80 × 104
2000 0.464 3.59 × 104
3000 0.695 5.39 × 104
4000 0.927 7.19 × 104
5000 1.16 8.99 × 104
6000 1.39 1.08 × 105
7000 1.62 1.26 × 105
8000 1.85 1.44 × 105
9000 2.09 1.62 × 105
1.00 × 104 2.32 1.80 × 105
1.65 × 104 3.83 2.97 × 105
Steel I Beam: W12 × 26 (Wide Flange 12 inch tall × 26 lbf/ft)
L = 25.0 ft
P (lbf/ft) w_max (in) stress_max (psi)
26.0 0.0147 730
30.0 0.0170 842
40.0 0.0226 1120
50.0 0.0283 1400
60.0 0.0339 1680
70.0 0.0396 1970
80.0 0.0453 2250
90.0 0.0509 2530
100 0.0566 2810
200 0.113 5620
300 0.170 8420
400 0.226 1.12 × 104
500 0.283 1.40 × 104
600 0.339 1.68 × 104
700 0.396 1.97 × 104
800 0.453 2.25 × 104
900 0.509 2.53 × 104
1000 0.566 2.81 × 104
2000 1.13 5.62 × 104
3000 1.70 8.42 × 104
4000 2.26 1.12 × 105
5000 2.83 1.40 × 105
6000 3.39 1.68 × 105
7000 3.96 1.97 × 105
8000 4.53 2.25 × 105
9000 5.09 2.53 × 105
1.00 × 104 5.66 2.81 × 105
1.06 × 104 5.99 2.97 × 105
Steel I Beam: W12 × 26 (Wide Flange 12 inch tall × 26 lbf/ft)
L = 30.0 ft
P (lbf/ft) w_max (in) stress_max (psi)
26.0 0.0305 1050
30.0 0.0352 1210
40.0 0.0469 1620
50.0 0.0587 2020
60.0 0.0704 2430
70.0 0.0821 2830
80.0 0.0939 3230
90.0 0.106 3640
100 0.117 4040
200 0.235 8090
300 0.352 1.21 × 104
400 0.469 1.62 × 104
500 0.587 2.02 × 104
600 0.704 2.43 × 104
700 0.821 2.83 × 104
800 0.939 3.23 × 104
900 1.06 3.64 × 104
1000 1.17 4.04 × 104
2000 2.35 8.09 × 104
3000 3.52 1.21 × 105
4000 4.69 1.62 × 105
5000 5.87 2.02 × 105
6000 7.04 2.43 × 105
7000 8.21 2.83 × 105
7350 8.62 2.97 × 105
Steel I Beam: W12 × 26 (Wide Flange 12 inch tall × 26 lbf/ft)
L = 40.0 ft
P (lbf/ft) w_max (in) stress_max (psi)
26.0 0.0964 1870
30.0 0.111 2160
40.0 0.148 2880
50.0 0.185 3590
60.0 0.222 4310
70.0 0.260 5030
80.0 0.297 5750
90.0 0.334 6470
100 0.371 7190
200 0.742 1.44 × 104
300 1.11 2.16 × 104
400 1.48 2.88 × 104
500 1.85 3.59 × 104
600 2.22 4.31 × 104
700 2.60 5.03 × 104
800 2.97 5.75 × 104
900 3.34 6.47 × 104
1000 3.71 7.19 × 104
2000 7.42 1.44 × 105
3000 11.1 2.16 × 105
3300 12.2 2.37 × 105
Steel I Beam: W12 × 26 (Wide Flange 12 inch tall × 26 lbf/ft)
L = 50.0 ft
P (lbf/ft) w_max (in) stress_max (psi)
26.0 0.235 2920
30.0 0.272 3370
40.0 0.362 4490
50.0 0.453 5620
60.0 0.543 6740
70.0 0.634 7860
80.0 0.724 8990
90.0 0.815 1.01 × 104
100 0.905 1.12 × 104
200 1.81 2.25 × 104
300 2.72 3.37 × 104
400 3.62 4.49 × 104
500 4.53 5.62 × 104
600 5.43 6.74 × 104
700 6.34 7.86 × 104
800 7.24 8.99 × 104
900 8.15 1.01 × 105
1000 9.05 1.12 × 105
1350 12.2 1.52 × 105
Steel I Beam: W12 × 26 (Wide Flange 12 inch tall × 26 lbf/ft)
L = 60.0 ft
P (lbf/ft) w_max (in) stress_max (psi)
26.0 0.488 4210
30.0 0.563 4850
40.0 0.751 6470
50.0 0.939 8090
60.0 1.13 9700
70.0 1.31 1.13 × 104
80.0 1.50 1.29 × 104
90.0 1.69 1.46 × 104
100 1.88 1.62 × 104
200 3.75 3.23 × 104
300 5.63 4.85 × 104
400 7.51 6.47 × 104
500 9.39 8.09 × 104
600 11.3 9.70 × 104
651 12.2 1.05 × 105
Steel I Beam: W12 × 26 (Wide Flange 12 inch tall × 26 lbf/ft)
L = 70.0 ft
P (lbf/ft) w_max (in) stress_max (psi)
26.0 0.904 5720
30.0 1.04 6600
40.0 1.39 8810
50.0 1.74 1.10 × 104
60.0 2.09 1.32 × 104
70.0 2.43 1.54 × 104
80.0 2.78 1.76 × 104
90.0 3.13 1.98 × 104
100 3.48 2.20 × 104
200 6.96 4.40 × 104
300 10.4 6.60 × 104
351 12.2 7.74 × 104
Steel I Beam: W12 × 26 (Wide Flange 12 inch tall × 26 lbf/ft)
L = 80.0 ft
P (lbf/ft) w_max (in) stress_max (psi)
26.0 1.54 7480
30.0 1.78 8630
40.0 2.37 1.15 × 104
50.0 2.97 1.44 × 104
60.0 3.56 1.73 × 104
70.0 4.15 2.01 × 104
80.0 4.75 2.30 × 104
90.0 5.34 2.59 × 104
100 5.93 2.88 × 104
200 11.9 5.75 × 104
206 12.2 5.92 × 104
Steel I Beam: W12 × 26 (Wide Flange 12 inch tall × 26 lbf/ft)
L = 90.0 ft
P (lbf/ft) w_max (in) stress_max (psi)
26.0 2.47 9460
30.0 2.85 1.09 × 104
40.0 3.80 1.46 × 104
50.0 4.75 1.82 × 104
60.0 5.70 2.18 × 104
70.0 6.65 2.55 × 104
80.0 7.60 2.91 × 104
90.0 8.55 3.28 × 104
100 9.50 3.64 × 104
129 12.2 4.68 × 104
Steel I Beam: W12 × 26 (Wide Flange 12 inch tall × 26 lbf/ft)
L = 100 ft
P (lbf/ft) w_max (in) stress_max (psi)
26.0 3.77 1.17 × 104
30.0 4.35 1.35 × 104
40.0 5.79 1.80 × 104
50.0 7.24 2.25 × 104
60.0 8.69 2.70 × 104
70.0 10.1 3.14 × 104
80.0 11.6 3.59 × 104
84.4 12.2 3.79 × 104
Steel I Beam: W12 × 26 (Wide Flange 12 inch tall × 26 lbf/ft)
L = 125 ft
P (lbf/ft) w_max (in) stress_max (psi)
26.0 9.19 1.83 × 104
30.0 10.6 2.11 × 104
34.6 12.2 2.43 × 104
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