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Wide Flange Steel I Beam: W12 × 35
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Glossary » Beams » Simply Supported » Uniformly Distributed Load » Single Span » Wide Flange Steel I Beam » W12 × 35
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 = 285 in4) for the W12 × 35 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: W12 × 35 (Wide Flange 12 inch tall × 35 lbf/ft)
L = 3.00 ft
P (lbf/ft) w_max (in) stress_max (psi)
35.0 7.35 × 10-6 10.4
40.0 8.40 × 10-6 11.8
50.0 1.05 × 10-5 14.8
60.0 1.26 × 10-5 17.8
70.0 1.47 × 10-5 20.7
80.0 1.68 × 10-5 23.7
90.0 1.89 × 10-5 26.6
100 2.10 × 10-5 29.6
200 4.20 × 10-5 59.2
300 6.30 × 10-5 88.8
400 8.40 × 10-5 118
500 1.05 × 10-4 148
600 1.26 × 10-4 178
700 1.47 × 10-4 207
800 1.68 × 10-4 237
900 1.89 × 10-4 266
1000 2.10 × 10-4 296
2000 4.20 × 10-4 592
3000 6.30 × 10-4 888
4000 8.40 × 10-4 1180
5000 0.00105 1480
6000 0.00126 1780
7000 0.00147 2070
8000 0.00168 2370
9000 0.00189 2660
1.00 × 104 0.00210 2960
2.00 × 104 0.00420 5920
3.00 × 104 0.00630 8880
4.00 × 104 0.00840 1.18 × 104
5.00 × 104 0.0105 1.48 × 104
6.00 × 104 0.0126 1.78 × 104
7.00 × 104 0.0147 2.07 × 104
8.00 × 104 0.0168 2.37 × 104
9.00 × 104 0.0189 2.66 × 104
1.00 × 105 0.0210 2.96 × 104
2.00 × 105 0.0420 5.92 × 104
3.00 × 105 0.0630 8.88 × 104
4.00 × 105 0.0840 1.18 × 105
5.00 × 105 0.105 1.48 × 105
6.00 × 105 0.126 1.78 × 105
7.00 × 105 0.147 2.07 × 105
8.00 × 105 0.168 2.37 × 105
9.00 × 105 0.189 2.66 × 105
1.00 × 106 0.210 2.96 × 105
1.00 × 106 0.211 2.97 × 105
Steel I Beam: W12 × 35 (Wide Flange 12 inch tall × 35 lbf/ft)
L = 5.00 ft
P (lbf/ft) w_max (in) stress_max (psi)
35.0 5.67 × 10-5 28.8
40.0 6.48 × 10-5 32.9
50.0 8.10 × 10-5 41.1
60.0 9.72 × 10-5 49.3
70.0 1.13 × 10-4 57.6
80.0 1.30 × 10-4 65.8
90.0 1.46 × 10-4 74.0
100 1.62 × 10-4 82.2
200 3.24 × 10-4 164
300 4.86 × 10-4 247
400 6.48 × 10-4 329
500 8.10 × 10-4 411
600 9.72 × 10-4 493
700 0.00113 576
800 0.00130 658
900 0.00146 740
1000 0.00162 822
2000 0.00324 1640
3000 0.00486 2470
4000 0.00648 3290
5000 0.00810 4110
6000 0.00972 4930
7000 0.0113 5760
8000 0.0130 6580
9000 0.0146 7400
1.00 × 104 0.0162 8220
2.00 × 104 0.0324 1.64 × 104
3.00 × 104 0.0486 2.47 × 104
4.00 × 104 0.0648 3.29 × 104
5.00 × 104 0.0810 4.11 × 104
6.00 × 104 0.0972 4.93 × 104
7.00 × 104 0.113 5.76 × 104
8.00 × 104 0.130 6.58 × 104
9.00 × 104 0.146 7.40 × 104
1.00 × 105 0.162 8.22 × 104
2.00 × 105 0.324 1.64 × 105
3.00 × 105 0.486 2.47 × 105
3.61 × 105 0.585 2.97 × 105
Steel I Beam: W12 × 35 (Wide Flange 12 inch tall × 35 lbf/ft)
L = 10.0 ft
P (lbf/ft) w_max (in) stress_max (psi)
35.0 9.07 × 10-4 115
40.0 0.00104 132
50.0 0.00130 164
60.0 0.00156 197
70.0 0.00181 230
80.0 0.00207 263
90.0 0.00233 296
100 0.00259 329
200 0.00518 658
300 0.00778 987
400 0.0104 1320
500 0.0130 1640
600 0.0156 1970
700 0.0181 2300
800 0.0207 2630
900 0.0233 2960
1000 0.0259 3290
2000 0.0518 6580
3000 0.0778 9870
4000 0.104 1.32 × 104
5000 0.130 1.64 × 104
6000 0.156 1.97 × 104
7000 0.181 2.30 × 104
8000 0.207 2.63 × 104
9000 0.233 2.96 × 104
1.00 × 104 0.259 3.29 × 104
2.00 × 104 0.518 6.58 × 104
3.00 × 104 0.778 9.87 × 104
4.00 × 104 1.04 1.32 × 105
5.00 × 104 1.30 1.64 × 105
6.00 × 104 1.56 1.97 × 105
7.00 × 104 1.81 2.30 × 105
8.00 × 104 2.07 2.63 × 105
9.00 × 104 2.33 2.96 × 105
9.03 × 104 2.34 2.97 × 105
Steel I Beam: W12 × 35 (Wide Flange 12 inch tall × 35 lbf/ft)
L = 15.0 ft
P (lbf/ft) w_max (in) stress_max (psi)
35.0 0.00459 259
40.0 0.00525 296
50.0 0.00656 370
60.0 0.00787 444
70.0 0.00919 518
80.0 0.0105 592
90.0 0.0118 666
100 0.0131 740
200 0.0262 1480
300 0.0394 2220
400 0.0525 2960
500 0.0656 3700
600 0.0787 4440
700 0.0919 5180
800 0.105 5920
900 0.118 6660
1000 0.131 7400
2000 0.262 1.48 × 104
3000 0.394 2.22 × 104
4000 0.525 2.96 × 104
5000 0.656 3.70 × 104
6000 0.787 4.44 × 104
7000 0.919 5.18 × 104
8000 1.05 5.92 × 104
9000 1.18 6.66 × 104
1.00 × 104 1.31 7.40 × 104
2.00 × 104 2.62 1.48 × 105
3.00 × 104 3.94 2.22 × 105
4.00 × 104 5.25 2.96 × 105
4.01 × 104 5.27 2.97 × 105
Steel I Beam: W12 × 35 (Wide Flange 12 inch tall × 35 lbf/ft)
L = 20.0 ft
P (lbf/ft) w_max (in) stress_max (psi)
35.0 0.0145 461
40.0 0.0166 526
50.0 0.0207 658
60.0 0.0249 789
70.0 0.0290 921
80.0 0.0332 1050
90.0 0.0373 1180
100 0.0415 1320
200 0.0829 2630
300 0.124 3950
400 0.166 5260
500 0.207 6580
600 0.249 7890
700 0.290 9210
800 0.332 1.05 × 104
900 0.373 1.18 × 104
1000 0.415 1.32 × 104
2000 0.829 2.63 × 104
3000 1.24 3.95 × 104
4000 1.66 5.26 × 104
5000 2.07 6.58 × 104
6000 2.49 7.89 × 104
7000 2.90 9.21 × 104
8000 3.32 1.05 × 105
9000 3.73 1.18 × 105
1.00 × 104 4.15 1.32 × 105
2.00 × 104 8.29 2.63 × 105
2.26 × 104 9.36 2.97 × 105
Steel I Beam: W12 × 35 (Wide Flange 12 inch tall × 35 lbf/ft)
L = 25.0 ft
P (lbf/ft) w_max (in) stress_max (psi)
35.0 0.0354 720
40.0 0.0405 822
50.0 0.0506 1030
60.0 0.0608 1230
70.0 0.0709 1440
80.0 0.0810 1640
90.0 0.0911 1850
100 0.101 2060
200 0.203 4110
300 0.304 6170
400 0.405 8220
500 0.506 1.03 × 104
600 0.608 1.23 × 104
700 0.709 1.44 × 104
800 0.810 1.64 × 104
900 0.911 1.85 × 104
1000 1.01 2.06 × 104
2000 2.03 4.11 × 104
3000 3.04 6.17 × 104
4000 4.05 8.22 × 104
5000 5.06 1.03 × 105
6000 6.08 1.23 × 105
7000 7.09 1.44 × 105
8000 8.10 1.64 × 105
9000 9.11 1.85 × 105
1.00 × 104 10.1 2.06 × 105
1.44 × 104 14.6 2.97 × 105
Steel I Beam: W12 × 35 (Wide Flange 12 inch tall × 35 lbf/ft)
L = 30.0 ft
P (lbf/ft) w_max (in) stress_max (psi)
35.0 0.0735 1040
40.0 0.0840 1180
50.0 0.105 1480
60.0 0.126 1780
70.0 0.147 2070
80.0 0.168 2370
90.0 0.189 2660
100 0.210 2960
200 0.420 5920
300 0.630 8880
400 0.840 1.18 × 104
500 1.05 1.48 × 104
600 1.26 1.78 × 104
700 1.47 2.07 × 104
800 1.68 2.37 × 104
900 1.89 2.66 × 104
1000 2.10 2.96 × 104
2000 4.20 5.92 × 104
3000 6.30 8.88 × 104
4000 8.40 1.18 × 105
5000 10.5 1.48 × 105
5950 12.5 1.76 × 105
Steel I Beam: W12 × 35 (Wide Flange 12 inch tall × 35 lbf/ft)
L = 40.0 ft
P (lbf/ft) w_max (in) stress_max (psi)
35.0 0.232 1840
40.0 0.265 2110
50.0 0.332 2630
60.0 0.398 3160
70.0 0.464 3680
80.0 0.531 4210
90.0 0.597 4740
100 0.664 5260
200 1.33 1.05 × 104
300 1.99 1.58 × 104
400 2.65 2.11 × 104
500 3.32 2.63 × 104
600 3.98 3.16 × 104
700 4.64 3.68 × 104
800 5.31 4.21 × 104
900 5.97 4.74 × 104
1000 6.64 5.26 × 104
1880 12.5 9.91 × 104
Steel I Beam: W12 × 35 (Wide Flange 12 inch tall × 35 lbf/ft)
L = 50.0 ft
P (lbf/ft) w_max (in) stress_max (psi)
35.0 0.567 2880
40.0 0.648 3290
50.0 0.810 4110
60.0 0.972 4930
70.0 1.13 5760
80.0 1.30 6580
90.0 1.46 7400
100 1.62 8220
200 3.24 1.64 × 104
300 4.86 2.47 × 104
400 6.48 3.29 × 104
500 8.10 4.11 × 104
600 9.72 4.93 × 104
700 11.3 5.76 × 104
772 12.5 6.35 × 104
Steel I Beam: W12 × 35 (Wide Flange 12 inch tall × 35 lbf/ft)
L = 60.0 ft
P (lbf/ft) w_max (in) stress_max (psi)
35.0 1.18 4140
40.0 1.34 4740
50.0 1.68 5920
60.0 2.02 7110
70.0 2.35 8290
80.0 2.69 9470
90.0 3.02 1.07 × 104
100 3.36 1.18 × 104
200 6.72 2.37 × 104
300 10.1 3.55 × 104
372 12.5 4.41 × 104
Steel I Beam: W12 × 35 (Wide Flange 12 inch tall × 35 lbf/ft)
L = 70.0 ft
P (lbf/ft) w_max (in) stress_max (psi)
35.0 2.18 5640
40.0 2.49 6450
50.0 3.11 8060
60.0 3.73 9670
70.0 4.36 1.13 × 104
80.0 4.98 1.29 × 104
90.0 5.60 1.45 × 104
100 6.22 1.61 × 104
200 12.4 3.22 × 104
201 12.5 3.24 × 104
Steel I Beam: W12 × 35 (Wide Flange 12 inch tall × 35 lbf/ft)
L = 80.0 ft
P (lbf/ft) w_max (in) stress_max (psi)
35.0 3.72 7370
40.0 4.25 8420
50.0 5.31 1.05 × 104
60.0 6.37 1.26 × 104
70.0 7.43 1.47 × 104
80.0 8.49 1.68 × 104
90.0 9.56 1.89 × 104
100 10.6 2.11 × 104
118 12.5 2.48 × 104
Steel I Beam: W12 × 35 (Wide Flange 12 inch tall × 35 lbf/ft)
L = 90.0 ft
P (lbf/ft) w_max (in) stress_max (psi)
35.0 5.95 9330
40.0 6.80 1.07 × 104
50.0 8.50 1.33 × 104
60.0 10.2 1.60 × 104
70.0 11.9 1.87 × 104
73.5 12.5 1.96 × 104
Steel I Beam: W12 × 35 (Wide Flange 12 inch tall × 35 lbf/ft)
L = 100 ft
P (lbf/ft) w_max (in) stress_max (psi)
35.0 9.07 1.15 × 104
40.0 10.4 1.32 × 104
48.2 12.5 1.59 × 104
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