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Wide Flange Steel I Beam: W12 × 19
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Glossary » Beams » Simply Supported » Uniformly Distributed Load » Two Equal Spans » Wide Flange Steel I Beam » W12 × 19
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 = 130 in4) for the W12 × 19 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 × 19 (Wide Flange 12 inch tall × 19 lbf/ft)
L = 3.00 ft
P (lbf/ft) w_max (in) stress_max (psi)
19.0 3.50 × 10-6 12.0
20.0 3.68 × 10-6 12.6
30.0 5.52 × 10-6 18.9
40.0 7.36 × 10-6 25.3
50.0 9.21 × 10-6 31.6
60.0 1.10 × 10-5 37.9
70.0 1.29 × 10-5 44.2
80.0 1.47 × 10-5 50.5
90.0 1.66 × 10-5 56.8
100 1.84 × 10-5 63.1
200 3.68 × 10-5 126
300 5.52 × 10-5 189
400 7.36 × 10-5 253
500 9.21 × 10-5 316
600 1.10 × 10-4 379
700 1.29 × 10-4 442
800 1.47 × 10-4 505
900 1.66 × 10-4 568
1000 1.84 × 10-4 631
2000 3.68 × 10-4 1260
3000 5.52 × 10-4 1890
4000 7.36 × 10-4 2530
5000 9.21 × 10-4 3160
6000 0.00110 3790
7000 0.00129 4420
8000 0.00147 5050
9000 0.00166 5680
1.00 × 104 0.00184 6310
2.00 × 104 0.00368 1.26 × 104
3.00 × 104 0.00552 1.89 × 104
4.00 × 104 0.00736 2.53 × 104
5.00 × 104 0.00921 3.16 × 104
6.00 × 104 0.0110 3.79 × 104
7.00 × 104 0.0129 4.42 × 104
8.00 × 104 0.0147 5.05 × 104
9.00 × 104 0.0166 5.68 × 104
1.00 × 105 0.0184 6.31 × 104
2.00 × 105 0.0368 1.26 × 105
3.00 × 105 0.0552 1.89 × 105
4.00 × 105 0.0736 2.53 × 105
4.70 × 105 0.0866 2.97 × 105
Steel I Beam: W12 × 19 (Wide Flange 12 inch tall × 19 lbf/ft)
L = 5.00 ft
P (lbf/ft) w_max (in) stress_max (psi)
19.0 2.70 × 10-5 33.3
20.0 2.84 × 10-5 35.1
30.0 4.26 × 10-5 52.6
40.0 5.68 × 10-5 70.2
50.0 7.10 × 10-5 87.7
60.0 8.52 × 10-5 105
70.0 9.94 × 10-5 123
80.0 1.14 × 10-4 140
90.0 1.28 × 10-4 158
100 1.42 × 10-4 175
200 2.84 × 10-4 351
300 4.26 × 10-4 526
400 5.68 × 10-4 702
500 7.10 × 10-4 877
600 8.52 × 10-4 1050
700 9.94 × 10-4 1230
800 0.00114 1400
900 0.00128 1580
1000 0.00142 1750
2000 0.00284 3510
3000 0.00426 5260
4000 0.00568 7020
5000 0.00710 8770
6000 0.00852 1.05 × 104
7000 0.00994 1.23 × 104
8000 0.0114 1.40 × 104
9000 0.0128 1.58 × 104
1.00 × 104 0.0142 1.75 × 104
2.00 × 104 0.0284 3.51 × 104
3.00 × 104 0.0426 5.26 × 104
4.00 × 104 0.0568 7.02 × 104
5.00 × 104 0.0710 8.77 × 104
6.00 × 104 0.0852 1.05 × 105
7.00 × 104 0.0994 1.23 × 105
8.00 × 104 0.114 1.40 × 105
9.00 × 104 0.128 1.58 × 105
1.00 × 105 0.142 1.75 × 105
1.69 × 105 0.241 2.97 × 105
Steel I Beam: W12 × 19 (Wide Flange 12 inch tall × 19 lbf/ft)
L = 10.0 ft
P (lbf/ft) w_max (in) stress_max (psi)
19.0 4.32 × 10-4 133
20.0 4.55 × 10-4 140
30.0 6.82 × 10-4 210
40.0 9.09 × 10-4 281
50.0 0.00114 351
60.0 0.00136 421
70.0 0.00159 491
80.0 0.00182 561
90.0 0.00205 631
100 0.00227 702
200 0.00455 1400
300 0.00682 2100
400 0.00909 2810
500 0.0114 3510
600 0.0136 4210
700 0.0159 4910
800 0.0182 5610
900 0.0205 6310
1000 0.0227 7020
2000 0.0455 1.40 × 104
3000 0.0682 2.10 × 104
4000 0.0909 2.81 × 104
5000 0.114 3.51 × 104
6000 0.136 4.21 × 104
7000 0.159 4.91 × 104
8000 0.182 5.61 × 104
9000 0.205 6.31 × 104
1.00 × 104 0.227 7.02 × 104
2.00 × 104 0.455 1.40 × 105
3.00 × 104 0.682 2.10 × 105
4.00 × 104 0.909 2.81 × 105
4.23 × 104 0.962 2.97 × 105
Steel I Beam: W12 × 19 (Wide Flange 12 inch tall × 19 lbf/ft)
L = 15.0 ft
P (lbf/ft) w_max (in) stress_max (psi)
19.0 0.00219 300
20.0 0.00230 316
30.0 0.00345 474
40.0 0.00460 631
50.0 0.00575 789
60.0 0.00690 947
70.0 0.00805 1100
80.0 0.00921 1260
90.0 0.0104 1420
100 0.0115 1580
200 0.0230 3160
300 0.0345 4740
400 0.0460 6310
500 0.0575 7890
600 0.0690 9470
700 0.0805 1.10 × 104
800 0.0921 1.26 × 104
900 0.104 1.42 × 104
1000 0.115 1.58 × 104
2000 0.230 3.16 × 104
3000 0.345 4.74 × 104
4000 0.460 6.31 × 104
5000 0.575 7.89 × 104
6000 0.690 9.47 × 104
7000 0.805 1.10 × 105
8000 0.921 1.26 × 105
9000 1.04 1.42 × 105
1.00 × 104 1.15 1.58 × 105
1.88 × 104 2.17 2.97 × 105
Steel I Beam: W12 × 19 (Wide Flange 12 inch tall × 19 lbf/ft)
L = 20.0 ft
P (lbf/ft) w_max (in) stress_max (psi)
19.0 0.00691 533
20.0 0.00727 561
30.0 0.0109 842
40.0 0.0145 1120
50.0 0.0182 1400
60.0 0.0218 1680
70.0 0.0255 1960
80.0 0.0291 2240
90.0 0.0327 2530
100 0.0364 2810
200 0.0727 5610
300 0.109 8420
400 0.145 1.12 × 104
500 0.182 1.40 × 104
600 0.218 1.68 × 104
700 0.255 1.96 × 104
800 0.291 2.24 × 104
900 0.327 2.53 × 104
1000 0.364 2.81 × 104
2000 0.727 5.61 × 104
3000 1.09 8.42 × 104
4000 1.45 1.12 × 105
5000 1.82 1.40 × 105
6000 2.18 1.68 × 105
7000 2.55 1.96 × 105
8000 2.91 2.24 × 105
9000 3.27 2.53 × 105
1.00 × 104 3.64 2.81 × 105
1.06 × 104 3.85 2.97 × 105
Steel I Beam: W12 × 19 (Wide Flange 12 inch tall × 19 lbf/ft)
L = 25.0 ft
P (lbf/ft) w_max (in) stress_max (psi)
19.0 0.0169 833
20.0 0.0178 877
30.0 0.0266 1320
40.0 0.0355 1750
50.0 0.0444 2190
60.0 0.0533 2630
70.0 0.0622 3070
80.0 0.0710 3510
90.0 0.0799 3950
100 0.0888 4380
200 0.178 8770
300 0.266 1.32 × 104
400 0.355 1.75 × 104
500 0.444 2.19 × 104
600 0.533 2.63 × 104
700 0.622 3.07 × 104
800 0.710 3.51 × 104
900 0.799 3.95 × 104
1000 0.888 4.38 × 104
2000 1.78 8.77 × 104
3000 2.66 1.32 × 105
4000 3.55 1.75 × 105
5000 4.44 2.19 × 105
6000 5.33 2.63 × 105
6770 6.02 2.97 × 105
Steel I Beam: W12 × 19 (Wide Flange 12 inch tall × 19 lbf/ft)
L = 30.0 ft
P (lbf/ft) w_max (in) stress_max (psi)
19.0 0.0350 1200
20.0 0.0368 1260
30.0 0.0552 1890
40.0 0.0736 2530
50.0 0.0921 3160
60.0 0.110 3790
70.0 0.129 4420
80.0 0.147 5050
90.0 0.166 5680
100 0.184 6310
200 0.368 1.26 × 104
300 0.552 1.89 × 104
400 0.736 2.53 × 104
500 0.921 3.16 × 104
600 1.10 3.79 × 104
700 1.29 4.42 × 104
800 1.47 5.05 × 104
900 1.66 5.68 × 104
1000 1.84 6.31 × 104
2000 3.68 1.26 × 105
3000 5.52 1.89 × 105
4000 7.36 2.53 × 105
4700 8.66 2.97 × 105
Steel I Beam: W12 × 19 (Wide Flange 12 inch tall × 19 lbf/ft)
L = 40.0 ft
P (lbf/ft) w_max (in) stress_max (psi)
19.0 0.111 2130
20.0 0.116 2240
30.0 0.175 3370
40.0 0.233 4490
50.0 0.291 5610
60.0 0.349 6730
70.0 0.407 7860
80.0 0.466 8980
90.0 0.524 1.01 × 104
100 0.582 1.12 × 104
200 1.16 2.24 × 104
300 1.75 3.37 × 104
400 2.33 4.49 × 104
500 2.91 5.61 × 104
600 3.49 6.73 × 104
700 4.07 7.86 × 104
800 4.66 8.98 × 104
900 5.24 1.01 × 105
1000 5.82 1.12 × 105
2000 11.6 2.24 × 105
2650 15.4 2.97 × 105
Steel I Beam: W12 × 19 (Wide Flange 12 inch tall × 19 lbf/ft)
L = 50.0 ft
P (lbf/ft) w_max (in) stress_max (psi)
19.0 0.270 3330
20.0 0.284 3510
30.0 0.426 5260
40.0 0.568 7020
50.0 0.710 8770
60.0 0.852 1.05 × 104
70.0 0.994 1.23 × 104
80.0 1.14 1.40 × 104
90.0 1.28 1.58 × 104
100 1.42 1.75 × 104
200 2.84 3.51 × 104
300 4.26 5.26 × 104
400 5.68 7.02 × 104
500 7.10 8.77 × 104
600 8.52 1.05 × 105
700 9.94 1.23 × 105
800 11.4 1.40 × 105
856 12.2 1.50 × 105
Steel I Beam: W12 × 19 (Wide Flange 12 inch tall × 19 lbf/ft)
L = 60.0 ft
P (lbf/ft) w_max (in) stress_max (psi)
19.0 0.560 4800
20.0 0.589 5050
30.0 0.884 7580
40.0 1.18 1.01 × 104
50.0 1.47 1.26 × 104
60.0 1.77 1.52 × 104
70.0 2.06 1.77 × 104
80.0 2.36 2.02 × 104
90.0 2.65 2.27 × 104
100 2.95 2.53 × 104
200 5.89 5.05 × 104
300 8.84 7.58 × 104
400 11.8 1.01 × 105
413 12.2 1.04 × 105
Steel I Beam: W12 × 19 (Wide Flange 12 inch tall × 19 lbf/ft)
L = 70.0 ft
P (lbf/ft) w_max (in) stress_max (psi)
19.0 1.04 6530
20.0 1.09 6880
30.0 1.64 1.03 × 104
40.0 2.18 1.38 × 104
50.0 2.73 1.72 × 104
60.0 3.27 2.06 × 104
70.0 3.82 2.41 × 104
80.0 4.37 2.75 × 104
90.0 4.91 3.09 × 104
100 5.46 3.44 × 104
200 10.9 6.88 × 104
223 12.2 7.66 × 104
Steel I Beam: W12 × 19 (Wide Flange 12 inch tall × 19 lbf/ft)
L = 80.0 ft
P (lbf/ft) w_max (in) stress_max (psi)
19.0 1.77 8530
20.0 1.86 8980
30.0 2.79 1.35 × 104
40.0 3.72 1.80 × 104
50.0 4.66 2.24 × 104
60.0 5.59 2.69 × 104
70.0 6.52 3.14 × 104
80.0 7.45 3.59 × 104
90.0 8.38 4.04 × 104
100 9.31 4.49 × 104
131 12.2 5.86 × 104
Steel I Beam: W12 × 19 (Wide Flange 12 inch tall × 19 lbf/ft)
L = 90.0 ft
P (lbf/ft) w_max (in) stress_max (psi)
19.0 2.83 1.08 × 104
20.0 2.98 1.14 × 104
30.0 4.47 1.70 × 104
40.0 5.97 2.27 × 104
50.0 7.46 2.84 × 104
60.0 8.95 3.41 × 104
70.0 10.4 3.98 × 104
80.0 11.9 4.55 × 104
81.5 12.2 4.63 × 104
Steel I Beam: W12 × 19 (Wide Flange 12 inch tall × 19 lbf/ft)
L = 100 ft
P (lbf/ft) w_max (in) stress_max (psi)
19.0 4.32 1.33 × 104
20.0 4.55 1.40 × 104
30.0 6.82 2.10 × 104
40.0 9.09 2.81 × 104
50.0 11.4 3.51 × 104
53.5 12.2 3.75 × 104
Steel I Beam: W12 × 19 (Wide Flange 12 inch tall × 19 lbf/ft)
L = 125 ft
P (lbf/ft) w_max (in) stress_max (psi)
19.0 10.5 2.08 × 104
20.0 11.1 2.19 × 104
21.9 12.2 2.40 × 104
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