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Glossary » Beams » Simply Supported » Uniformly Distributed Load » Three Equal Spans » Wide Flange Steel I Beam » W14 × 68
Wide Flange Steel I Beam | Single Span | Two Equal Spans | Three Equal Spans | Four Equal Spans

For a simply supported beam in three equal spans, we compute the displacement at the middle of the first and the third spans, and the maximum normal stress occuring at the second and third supports of the beam.
The tabulated data listed in this page are calculated based on the area moment of inertia (Ixx = 723 in4) for the W14 × 68 Wide Flange Steel I Beam and the typical Young's modulus (E = 3.046 × 107 psi) of steels. Note that the typical yielding stress 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.

 Steel I Beam: W14 × 68 (Wide Flange 14 inch tall × 68 lbf/ft) L = 3.00 ft (lbf/ft) (in) (psi) 68.0 2.94 × 10-6 7.13 70.0 3.03 × 10-6 7.34 80.0 3.46 × 10-6 8.39 90.0 3.89 × 10-6 9.44 100 4.32 × 10-6 10.5 200 8.64 × 10-6 21.0 300 1.30 × 10-5 31.5 400 1.73 × 10-5 41.9 500 2.16 × 10-5 52.4 600 2.59 × 10-5 62.9 700 3.03 × 10-5 73.4 800 3.46 × 10-5 83.9 900 3.89 × 10-5 94.4 1000 4.32 × 10-5 105 2000 8.64 × 10-5 210 3000 1.30 × 10-4 315 4000 1.73 × 10-4 419 5000 2.16 × 10-4 524 6000 2.59 × 10-4 629 7000 3.03 × 10-4 734 8000 3.46 × 10-4 839 9000 3.89 × 10-4 944 1.00 × 104 4.32 × 10-4 1050 2.00 × 104 8.64 × 10-4 2100 3.00 × 104 0.00130 3150 4.00 × 104 0.00173 4190 5.00 × 104 0.00216 5240 6.00 × 104 0.00259 6290 7.00 × 104 0.00303 7340 8.00 × 104 0.00346 8390 9.00 × 104 0.00389 9440 1.00 × 105 0.00432 1.05 × 104 2.00 × 105 0.00864 2.10 × 104 3.00 × 105 0.0130 3.15 × 104 4.00 × 105 0.0173 4.19 × 104 5.00 × 105 0.0216 5.24 × 104 6.00 × 105 0.0259 6.29 × 104 7.00 × 105 0.0303 7.34 × 104 8.00 × 105 0.0346 8.39 × 104 9.00 × 105 0.0389 9.44 × 104 1.00 × 106 0.0432 1.05 × 105 2.00 × 106 0.0864 2.10 × 105 2.83 × 106 0.122 2.97 × 105
 Steel I Beam: W14 × 68 (Wide Flange 14 inch tall × 68 lbf/ft) L = 5.00 ft (lbf/ft) (in) (psi) 68.0 2.27 × 10-5 19.8 70.0 2.33 × 10-5 20.4 80.0 2.67 × 10-5 23.3 90.0 3.00 × 10-5 26.2 100 3.33 × 10-5 29.1 200 6.67 × 10-5 58.3 300 1.00 × 10-4 87.4 400 1.33 × 10-4 117 500 1.67 × 10-4 146 600 2.00 × 10-4 175 700 2.33 × 10-4 204 800 2.67 × 10-4 233 900 3.00 × 10-4 262 1000 3.33 × 10-4 291 2000 6.67 × 10-4 583 3000 0.00100 874 4000 0.00133 1170 5000 0.00167 1460 6000 0.00200 1750 7000 0.00233 2040 8000 0.00267 2330 9000 0.00300 2620 1.00 × 104 0.00333 2910 2.00 × 104 0.00667 5830 3.00 × 104 0.0100 8740 4.00 × 104 0.0133 1.17 × 104 5.00 × 104 0.0167 1.46 × 104 6.00 × 104 0.0200 1.75 × 104 7.00 × 104 0.0233 2.04 × 104 8.00 × 104 0.0267 2.33 × 104 9.00 × 104 0.0300 2.62 × 104 1.00 × 105 0.0333 2.91 × 104 2.00 × 105 0.0667 5.83 × 104 3.00 × 105 0.100 8.74 × 104 4.00 × 105 0.133 1.17 × 105 5.00 × 105 0.167 1.46 × 105 6.00 × 105 0.200 1.75 × 105 7.00 × 105 0.233 2.04 × 105 8.00 × 105 0.267 2.33 × 105 9.00 × 105 0.300 2.62 × 105 1.00 × 106 0.333 2.91 × 105 1.02 × 106 0.340 2.97 × 105
 Steel I Beam: W14 × 68 (Wide Flange 14 inch tall × 68 lbf/ft) L = 10.0 ft (lbf/ft) (in) (psi) 68.0 3.63 × 10-4 79.2 70.0 3.74 × 10-4 81.6 80.0 4.27 × 10-4 93.2 90.0 4.80 × 10-4 105 100 5.34 × 10-4 117 200 0.00107 233 300 0.00160 350 400 0.00213 466 500 0.00267 583 600 0.00320 699 700 0.00374 816 800 0.00427 932 900 0.00480 1050 1000 0.00534 1170 2000 0.0107 2330 3000 0.0160 3500 4000 0.0213 4660 5000 0.0267 5830 6000 0.0320 6990 7000 0.0374 8160 8000 0.0427 9320 9000 0.0480 1.05 × 104 1.00 × 104 0.0534 1.17 × 104 2.00 × 104 0.107 2.33 × 104 3.00 × 104 0.160 3.50 × 104 4.00 × 104 0.213 4.66 × 104 5.00 × 104 0.267 5.83 × 104 6.00 × 104 0.320 6.99 × 104 7.00 × 104 0.374 8.16 × 104 8.00 × 104 0.427 9.32 × 104 9.00 × 104 0.480 1.05 × 105 1.00 × 105 0.534 1.17 × 105 2.00 × 105 1.07 2.33 × 105 2.55 × 105 1.36 2.97 × 105
 Steel I Beam: W14 × 68 (Wide Flange 14 inch tall × 68 lbf/ft) L = 15.0 ft (lbf/ft) (in) (psi) 68.0 0.00184 178 70.0 0.00189 184 80.0 0.00216 210 90.0 0.00243 236 100 0.00270 262 200 0.00540 524 300 0.00810 786 400 0.0108 1050 500 0.0135 1310 600 0.0162 1570 700 0.0189 1840 800 0.0216 2100 900 0.0243 2360 1000 0.0270 2620 2000 0.0540 5240 3000 0.0810 7860 4000 0.108 1.05 × 104 5000 0.135 1.31 × 104 6000 0.162 1.57 × 104 7000 0.189 1.84 × 104 8000 0.216 2.10 × 104 9000 0.243 2.36 × 104 1.00 × 104 0.270 2.62 × 104 2.00 × 104 0.540 5.24 × 104 3.00 × 104 0.810 7.86 × 104 4.00 × 104 1.08 1.05 × 105 5.00 × 104 1.35 1.31 × 105 6.00 × 104 1.62 1.57 × 105 7.00 × 104 1.89 1.84 × 105 8.00 × 104 2.16 2.10 × 105 9.00 × 104 2.43 2.36 × 105 1.00 × 105 2.70 2.62 × 105 1.13 × 105 3.06 2.97 × 105
 Steel I Beam: W14 × 68 (Wide Flange 14 inch tall × 68 lbf/ft) L = 20.0 ft (lbf/ft) (in) (psi) 68.0 0.00581 317 70.0 0.00598 326 80.0 0.00683 373 90.0 0.00768 419 100 0.00854 466 200 0.0171 932 300 0.0256 1400 400 0.0342 1860 500 0.0427 2330 600 0.0512 2800 700 0.0598 3260 800 0.0683 3730 900 0.0768 4190 1000 0.0854 4660 2000 0.171 9320 3000 0.256 1.40 × 104 4000 0.342 1.86 × 104 5000 0.427 2.33 × 104 6000 0.512 2.80 × 104 7000 0.598 3.26 × 104 8000 0.683 3.73 × 104 9000 0.768 4.19 × 104 1.00 × 104 0.854 4.66 × 104 2.00 × 104 1.71 9.32 × 104 3.00 × 104 2.56 1.40 × 105 4.00 × 104 3.42 1.86 × 105 5.00 × 104 4.27 2.33 × 105 6.00 × 104 5.12 2.80 × 105 6.37 × 104 5.44 2.97 × 105
 Steel I Beam: W14 × 68 (Wide Flange 14 inch tall × 68 lbf/ft) L = 25.0 ft (lbf/ft) (in) (psi) 68.0 0.0142 495 70.0 0.0146 510 80.0 0.0167 583 90.0 0.0188 655 100 0.0208 728 200 0.0417 1460 300 0.0625 2180 400 0.0834 2910 500 0.104 3640 600 0.125 4370 700 0.146 5100 800 0.167 5830 900 0.188 6550 1000 0.208 7280 2000 0.417 1.46 × 104 3000 0.625 2.18 × 104 4000 0.834 2.91 × 104 5000 1.04 3.64 × 104 6000 1.25 4.37 × 104 7000 1.46 5.10 × 104 8000 1.67 5.83 × 104 9000 1.88 6.55 × 104 1.00 × 104 2.08 7.28 × 104 2.00 × 104 4.17 1.46 × 105 3.00 × 104 6.25 2.18 × 105 4.00 × 104 8.34 2.91 × 105 4.08 × 104 8.50 2.97 × 105
 Steel I Beam: W14 × 68 (Wide Flange 14 inch tall × 68 lbf/ft) L = 30.0 ft (lbf/ft) (in) (psi) 68.0 0.0294 713 70.0 0.0303 734 80.0 0.0346 839 90.0 0.0389 944 100 0.0432 1050 200 0.0864 2100 300 0.130 3150 400 0.173 4190 500 0.216 5240 600 0.259 6290 700 0.303 7340 800 0.346 8390 900 0.389 9440 1000 0.432 1.05 × 104 2000 0.864 2.10 × 104 3000 1.30 3.15 × 104 4000 1.73 4.19 × 104 5000 2.16 5.24 × 104 6000 2.59 6.29 × 104 7000 3.03 7.34 × 104 8000 3.46 8.39 × 104 9000 3.89 9.44 × 104 1.00 × 104 4.32 1.05 × 105 2.00 × 104 8.64 2.10 × 105 2.83 × 104 12.2 2.97 × 105
 Steel I Beam: W14 × 68 (Wide Flange 14 inch tall × 68 lbf/ft) L = 40.0 ft (lbf/ft) (in) (psi) 68.0 0.0929 1270 70.0 0.0956 1300 80.0 0.109 1490 90.0 0.123 1680 100 0.137 1860 200 0.273 3730 300 0.410 5590 400 0.546 7460 500 0.683 9320 600 0.820 1.12 × 104 700 0.956 1.30 × 104 800 1.09 1.49 × 104 900 1.23 1.68 × 104 1000 1.37 1.86 × 104 2000 2.73 3.73 × 104 3000 4.10 5.59 × 104 4000 5.46 7.46 × 104 5000 6.83 9.32 × 104 6000 8.20 1.12 × 105 7000 9.56 1.30 × 105 8000 10.9 1.49 × 105 9000 12.3 1.68 × 105 1.00 × 104 13.7 1.86 × 105 1.59 × 104 21.8 2.97 × 105
 Steel I Beam: W14 × 68 (Wide Flange 14 inch tall × 68 lbf/ft) L = 50.0 ft (lbf/ft) (in) (psi) 68.0 0.227 1980 70.0 0.233 2040 80.0 0.267 2330 90.0 0.300 2620 100 0.333 2910 200 0.667 5830 300 1.00 8740 400 1.33 1.17 × 104 500 1.67 1.46 × 104 600 2.00 1.75 × 104 700 2.33 2.04 × 104 800 2.67 2.33 × 104 900 3.00 2.62 × 104 1000 3.33 2.91 × 104 2000 6.67 5.83 × 104 3000 10.0 8.74 × 104 4000 13.3 1.17 × 105 4210 14.0 1.23 × 105
 Steel I Beam: W14 × 68 (Wide Flange 14 inch tall × 68 lbf/ft) L = 60.0 ft (lbf/ft) (in) (psi) 68.0 0.470 2850 70.0 0.484 2940 80.0 0.553 3360 90.0 0.622 3780 100 0.692 4190 200 1.38 8390 300 2.07 1.26 × 104 400 2.77 1.68 × 104 500 3.46 2.10 × 104 600 4.15 2.52 × 104 700 4.84 2.94 × 104 800 5.53 3.36 × 104 900 6.22 3.78 × 104 1000 6.92 4.19 × 104 2000 13.8 8.39 × 104 2030 14.0 8.52 × 104
 Steel I Beam: W14 × 68 (Wide Flange 14 inch tall × 68 lbf/ft) L = 70.0 ft (lbf/ft) (in) (psi) 68.0 0.871 3880 70.0 0.897 4000 80.0 1.02 4570 90.0 1.15 5140 100 1.28 5710 200 2.56 1.14 × 104 300 3.84 1.71 × 104 400 5.12 2.28 × 104 500 6.41 2.85 × 104 600 7.69 3.43 × 104 700 8.97 4.00 × 104 800 10.2 4.57 × 104 900 11.5 5.14 × 104 1000 12.8 5.71 × 104 1100 14.0 6.26 × 104
 Steel I Beam: W14 × 68 (Wide Flange 14 inch tall × 68 lbf/ft) L = 80.0 ft (lbf/ft) (in) (psi) 68.0 1.49 5070 70.0 1.53 5220 80.0 1.75 5970 90.0 1.97 6710 100 2.19 7460 200 4.37 1.49 × 104 300 6.56 2.24 × 104 400 8.74 2.98 × 104 500 10.9 3.73 × 104 600 13.1 4.47 × 104 642 14.0 4.79 × 104
 Steel I Beam: W14 × 68 (Wide Flange 14 inch tall × 68 lbf/ft) L = 90.0 ft (lbf/ft) (in) (psi) 68.0 2.38 6420 70.0 2.45 6610 80.0 2.80 7550 90.0 3.15 8490 100 3.50 9440 200 7.00 1.89 × 104 300 10.5 2.83 × 104 400 14.0 3.78 × 104 401 14.0 3.78 × 104
 Steel I Beam: W14 × 68 (Wide Flange 14 inch tall × 68 lbf/ft) L = 100 ft (lbf/ft) (in) (psi) 68.0 3.63 7920 70.0 3.74 8160 80.0 4.27 9320 90.0 4.80 1.05 × 104 100 5.34 1.17 × 104 200 10.7 2.33 × 104 263 14.0 3.07 × 104
 Steel I Beam: W14 × 68 (Wide Flange 14 inch tall × 68 lbf/ft) L = 125 ft (lbf/ft) (in) (psi) 68.0 8.86 1.24 × 104 70.0 9.12 1.27 × 104 80.0 10.4 1.46 × 104 90.0 11.7 1.64 × 104 100 13.0 1.82 × 104 108 14.0 1.96 × 104