engineering fundamentals
Wide Flange Steel I Beam: W12 × 14
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Glossary » Beams » Simply Supported » Uniformly Distributed Load » Two Equal Spans » Wide Flange Steel I Beam » W12 × 14
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 = 88.6 in4) for the W12 × 14 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 × 14 (Wide Flange 12 inch tall × 14 lbf/ft)
L = 3.00 ft
P (lbf/ft) w_max (in) stress_max (psi)
14.0 3.78 × 10-6 12.7
20.0 5.40 × 10-6 18.1
30.0 8.10 × 10-6 27.2
40.0 1.08 × 10-5 36.3
50.0 1.35 × 10-5 45.4
60.0 1.62 × 10-5 54.4
70.0 1.89 × 10-5 63.5
80.0 2.16 × 10-5 72.6
90.0 2.43 × 10-5 81.7
100 2.70 × 10-5 90.7
200 5.40 × 10-5 181
300 8.10 × 10-5 272
400 1.08 × 10-4 363
500 1.35 × 10-4 454
600 1.62 × 10-4 544
700 1.89 × 10-4 635
800 2.16 × 10-4 726
900 2.43 × 10-4 817
1000 2.70 × 10-4 907
2000 5.40 × 10-4 1810
3000 8.10 × 10-4 2720
4000 0.00108 3630
5000 0.00135 4540
6000 0.00162 5440
7000 0.00189 6350
8000 0.00216 7260
9000 0.00243 8170
1.00 × 104 0.00270 9070
2.00 × 104 0.00540 1.81 × 104
3.00 × 104 0.00810 2.72 × 104
4.00 × 104 0.0108 3.63 × 104
5.00 × 104 0.0135 4.54 × 104
6.00 × 104 0.0162 5.44 × 104
7.00 × 104 0.0189 6.35 × 104
8.00 × 104 0.0216 7.26 × 104
9.00 × 104 0.0243 8.17 × 104
1.00 × 105 0.0270 9.07 × 104
2.00 × 105 0.0540 1.81 × 105
3.00 × 105 0.0810 2.72 × 105
3.27 × 105 0.0884 2.97 × 105
Steel I Beam: W12 × 14 (Wide Flange 12 inch tall × 14 lbf/ft)
L = 5.00 ft
P (lbf/ft) w_max (in) stress_max (psi)
14.0 2.92 × 10-5 35.3
20.0 4.17 × 10-5 50.4
30.0 6.25 × 10-5 75.6
40.0 8.34 × 10-5 101
50.0 1.04 × 10-4 126
60.0 1.25 × 10-4 151
70.0 1.46 × 10-4 176
80.0 1.67 × 10-4 202
90.0 1.88 × 10-4 227
100 2.08 × 10-4 252
200 4.17 × 10-4 504
300 6.25 × 10-4 756
400 8.34 × 10-4 1010
500 0.00104 1260
600 0.00125 1510
700 0.00146 1760
800 0.00167 2020
900 0.00188 2270
1000 0.00208 2520
2000 0.00417 5040
3000 0.00625 7560
4000 0.00834 1.01 × 104
5000 0.0104 1.26 × 104
6000 0.0125 1.51 × 104
7000 0.0146 1.76 × 104
8000 0.0167 2.02 × 104
9000 0.0188 2.27 × 104
1.00 × 104 0.0208 2.52 × 104
2.00 × 104 0.0417 5.04 × 104
3.00 × 104 0.0625 7.56 × 104
4.00 × 104 0.0834 1.01 × 105
5.00 × 104 0.104 1.26 × 105
6.00 × 104 0.125 1.51 × 105
7.00 × 104 0.146 1.76 × 105
8.00 × 104 0.167 2.02 × 105
9.00 × 104 0.188 2.27 × 105
1.00 × 105 0.208 2.52 × 105
1.18 × 105 0.246 2.97 × 105
Steel I Beam: W12 × 14 (Wide Flange 12 inch tall × 14 lbf/ft)
L = 10.0 ft
P (lbf/ft) w_max (in) stress_max (psi)
14.0 4.67 × 10-4 141
20.0 6.67 × 10-4 202
30.0 0.00100 302
40.0 0.00133 403
50.0 0.00167 504
60.0 0.00200 605
70.0 0.00233 706
80.0 0.00267 807
90.0 0.00300 907
100 0.00334 1010
200 0.00667 2020
300 0.0100 3020
400 0.0133 4030
500 0.0167 5040
600 0.0200 6050
700 0.0233 7060
800 0.0267 8070
900 0.0300 9070
1000 0.0334 1.01 × 104
2000 0.0667 2.02 × 104
3000 0.100 3.02 × 104
4000 0.133 4.03 × 104
5000 0.167 5.04 × 104
6000 0.200 6.05 × 104
7000 0.233 7.06 × 104
8000 0.267 8.07 × 104
9000 0.300 9.07 × 104
1.00 × 104 0.334 1.01 × 105
2.00 × 104 0.667 2.02 × 105
2.95 × 104 0.983 2.97 × 105
Steel I Beam: W12 × 14 (Wide Flange 12 inch tall × 14 lbf/ft)
L = 15.0 ft
P (lbf/ft) w_max (in) stress_max (psi)
14.0 0.00236 318
20.0 0.00338 454
30.0 0.00507 681
40.0 0.00675 907
50.0 0.00844 1130
60.0 0.0101 1360
70.0 0.0118 1590
80.0 0.0135 1810
90.0 0.0152 2040
100 0.0169 2270
200 0.0338 4540
300 0.0507 6810
400 0.0675 9070
500 0.0844 1.13 × 104
600 0.101 1.36 × 104
700 0.118 1.59 × 104
800 0.135 1.81 × 104
900 0.152 2.04 × 104
1000 0.169 2.27 × 104
2000 0.338 4.54 × 104
3000 0.507 6.81 × 104
4000 0.675 9.07 × 104
5000 0.844 1.13 × 105
6000 1.01 1.36 × 105
7000 1.18 1.59 × 105
8000 1.35 1.81 × 105
9000 1.52 2.04 × 105
1.00 × 104 1.69 2.27 × 105
1.31 × 104 2.21 2.97 × 105
Steel I Beam: W12 × 14 (Wide Flange 12 inch tall × 14 lbf/ft)
L = 20.0 ft
P (lbf/ft) w_max (in) stress_max (psi)
14.0 0.00747 565
20.0 0.0107 807
30.0 0.0160 1210
40.0 0.0213 1610
50.0 0.0267 2020
60.0 0.0320 2420
70.0 0.0374 2820
80.0 0.0427 3230
90.0 0.0480 3630
100 0.0534 4030
200 0.107 8070
300 0.160 1.21 × 104
400 0.213 1.61 × 104
500 0.267 2.02 × 104
600 0.320 2.42 × 104
700 0.374 2.82 × 104
800 0.427 3.23 × 104
900 0.480 3.63 × 104
1000 0.534 4.03 × 104
2000 1.07 8.07 × 104
3000 1.60 1.21 × 105
4000 2.13 1.61 × 105
5000 2.67 2.02 × 105
6000 3.20 2.42 × 105
7000 3.74 2.82 × 105
7370 3.93 2.97 × 105
Steel I Beam: W12 × 14 (Wide Flange 12 inch tall × 14 lbf/ft)
L = 25.0 ft
P (lbf/ft) w_max (in) stress_max (psi)
14.0 0.0182 882
20.0 0.0261 1260
30.0 0.0391 1890
40.0 0.0521 2520
50.0 0.0651 3150
60.0 0.0782 3780
70.0 0.0912 4410
80.0 0.104 5040
90.0 0.117 5670
100 0.130 6300
200 0.261 1.26 × 104
300 0.391 1.89 × 104
400 0.521 2.52 × 104
500 0.651 3.15 × 104
600 0.782 3.78 × 104
700 0.912 4.41 × 104
800 1.04 5.04 × 104
900 1.17 5.67 × 104
1000 1.30 6.30 × 104
2000 2.61 1.26 × 105
3000 3.91 1.89 × 105
4000 5.21 2.52 × 105
4710 6.14 2.97 × 105
Steel I Beam: W12 × 14 (Wide Flange 12 inch tall × 14 lbf/ft)
L = 30.0 ft
P (lbf/ft) w_max (in) stress_max (psi)
14.0 0.0378 1270
20.0 0.0540 1810
30.0 0.0810 2720
40.0 0.108 3630
50.0 0.135 4540
60.0 0.162 5440
70.0 0.189 6350
80.0 0.216 7260
90.0 0.243 8170
100 0.270 9070
200 0.540 1.81 × 104
300 0.810 2.72 × 104
400 1.08 3.63 × 104
500 1.35 4.54 × 104
600 1.62 5.44 × 104
700 1.89 6.35 × 104
800 2.16 7.26 × 104
900 2.43 8.17 × 104
1000 2.70 9.07 × 104
2000 5.40 1.81 × 105
3000 8.10 2.72 × 105
3270 8.84 2.97 × 105
Steel I Beam: W12 × 14 (Wide Flange 12 inch tall × 14 lbf/ft)
L = 40.0 ft
P (lbf/ft) w_max (in) stress_max (psi)
14.0 0.120 2260
20.0 0.171 3230
30.0 0.256 4840
40.0 0.342 6450
50.0 0.427 8070
60.0 0.512 9680
70.0 0.598 1.13 × 104
80.0 0.683 1.29 × 104
90.0 0.768 1.45 × 104
100 0.854 1.61 × 104
200 1.71 3.23 × 104
300 2.56 4.84 × 104
400 3.42 6.45 × 104
500 4.27 8.07 × 104
600 5.12 9.68 × 104
700 5.98 1.13 × 105
800 6.83 1.29 × 105
900 7.68 1.45 × 105
1000 8.54 1.61 × 105
1840 15.7 2.97 × 105
Steel I Beam: W12 × 14 (Wide Flange 12 inch tall × 14 lbf/ft)
L = 50.0 ft
P (lbf/ft) w_max (in) stress_max (psi)
14.0 0.292 3530
20.0 0.417 5040
30.0 0.625 7560
40.0 0.834 1.01 × 104
50.0 1.04 1.26 × 104
60.0 1.25 1.51 × 104
70.0 1.46 1.76 × 104
80.0 1.67 2.02 × 104
90.0 1.88 2.27 × 104
100 2.08 2.52 × 104
200 4.17 5.04 × 104
300 6.25 7.56 × 104
400 8.34 1.01 × 105
500 10.4 1.26 × 105
571 11.9 1.44 × 105
Steel I Beam: W12 × 14 (Wide Flange 12 inch tall × 14 lbf/ft)
L = 60.0 ft
P (lbf/ft) w_max (in) stress_max (psi)
14.0 0.605 5080
20.0 0.864 7260
30.0 1.30 1.09 × 104
40.0 1.73 1.45 × 104
50.0 2.16 1.81 × 104
60.0 2.59 2.18 × 104
70.0 3.03 2.54 × 104
80.0 3.46 2.90 × 104
90.0 3.89 3.27 × 104
100 4.32 3.63 × 104
200 8.64 7.26 × 104
276 11.9 1.00 × 105
Steel I Beam: W12 × 14 (Wide Flange 12 inch tall × 14 lbf/ft)
L = 70.0 ft
P (lbf/ft) w_max (in) stress_max (psi)
14.0 1.12 6920
20.0 1.60 9880
30.0 2.40 1.48 × 104
40.0 3.20 1.98 × 104
50.0 4.00 2.47 × 104
60.0 4.80 2.96 × 104
70.0 5.61 3.46 × 104
80.0 6.41 3.95 × 104
90.0 7.21 4.45 × 104
100 8.01 4.94 × 104
149 11.9 7.35 × 104
Steel I Beam: W12 × 14 (Wide Flange 12 inch tall × 14 lbf/ft)
L = 80.0 ft
P (lbf/ft) w_max (in) stress_max (psi)
14.0 1.91 9030
20.0 2.73 1.29 × 104
30.0 4.10 1.94 × 104
40.0 5.46 2.58 × 104
50.0 6.83 3.23 × 104
60.0 8.20 3.87 × 104
70.0 9.56 4.52 × 104
80.0 10.9 5.16 × 104
87.2 11.9 5.63 × 104
Steel I Beam: W12 × 14 (Wide Flange 12 inch tall × 14 lbf/ft)
L = 90.0 ft
P (lbf/ft) w_max (in) stress_max (psi)
14.0 3.06 1.14 × 104
20.0 4.38 1.63 × 104
30.0 6.56 2.45 × 104
40.0 8.75 3.27 × 104
50.0 10.9 4.08 × 104
54.4 11.9 4.44 × 104
Steel I Beam: W12 × 14 (Wide Flange 12 inch tall × 14 lbf/ft)
L = 100 ft
P (lbf/ft) w_max (in) stress_max (psi)
14.0 4.67 1.41 × 104
20.0 6.67 2.02 × 104
30.0 10.0 3.02 × 104
35.7 11.9 3.60 × 104
Steel I Beam: W12 × 14 (Wide Flange 12 inch tall × 14 lbf/ft)
L = 125 ft
P (lbf/ft) w_max (in) stress_max (psi)
14.0 11.4 2.21 × 104
14.6 11.9 2.30 × 104
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