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Glossary » Beams » Simply Supported » Uniformly Distributed Load » Four Equal Spans » Wide Flange Steel I Beam » W14 × 43
Wide Flange Steel I Beam | Single Span | Two Equal Spans | Three Equal Spans | Four Equal Spans

For a simply supported beam in four equal spans, we compute the displacement at the middle of the first and fourth spans, and the maximum normal stress occuring at the second and fourth supports of the beam.
The tabulated data listed in this page are calculated based on the area moment of inertia (Ixx = 428 in4) for the W14 × 43 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 × 43 (Wide Flange 14 inch tall × 43 lbf/ft) L = 3.00 ft (lbf/ft) (in) (psi) 43.0 2.91 × 10-6 7.94 50.0 3.38 × 10-6 9.23 60.0 4.06 × 10-6 11.1 70.0 4.74 × 10-6 12.9 80.0 5.41 × 10-6 14.8 90.0 6.09 × 10-6 16.6 100 6.76 × 10-6 18.5 200 1.35 × 10-5 36.9 300 2.03 × 10-5 55.4 400 2.71 × 10-5 73.8 500 3.38 × 10-5 92.3 600 4.06 × 10-5 111 700 4.74 × 10-5 129 800 5.41 × 10-5 148 900 6.09 × 10-5 166 1000 6.76 × 10-5 185 2000 1.35 × 10-4 369 3000 2.03 × 10-4 554 4000 2.71 × 10-4 738 5000 3.38 × 10-4 923 6000 4.06 × 10-4 1110 7000 4.74 × 10-4 1290 8000 5.41 × 10-4 1480 9000 6.09 × 10-4 1660 1.00 × 104 6.76 × 10-4 1850 2.00 × 104 0.00135 3690 3.00 × 104 0.00203 5540 4.00 × 104 0.00271 7380 5.00 × 104 0.00338 9230 6.00 × 104 0.00406 1.11 × 104 7.00 × 104 0.00474 1.29 × 104 8.00 × 104 0.00541 1.48 × 104 9.00 × 104 0.00609 1.66 × 104 1.00 × 105 0.00676 1.85 × 104 2.00 × 105 0.0135 3.69 × 104 3.00 × 105 0.0203 5.54 × 104 4.00 × 105 0.0271 7.38 × 104 5.00 × 105 0.0338 9.23 × 104 6.00 × 105 0.0406 1.11 × 105 7.00 × 105 0.0474 1.29 × 105 8.00 × 105 0.0541 1.48 × 105 9.00 × 105 0.0609 1.66 × 105 1.00 × 106 0.0676 1.85 × 105 1.61 × 106 0.109 2.97 × 105
 Steel I Beam: W14 × 43 (Wide Flange 14 inch tall × 43 lbf/ft) L = 5.00 ft (lbf/ft) (in) (psi) 43.0 2.24 × 10-5 22.0 50.0 2.61 × 10-5 25.6 60.0 3.13 × 10-5 30.8 70.0 3.65 × 10-5 35.9 80.0 4.18 × 10-5 41.0 90.0 4.70 × 10-5 46.1 100 5.22 × 10-5 51.3 200 1.04 × 10-4 103 300 1.57 × 10-4 154 400 2.09 × 10-4 205 500 2.61 × 10-4 256 600 3.13 × 10-4 308 700 3.65 × 10-4 359 800 4.18 × 10-4 410 900 4.70 × 10-4 461 1000 5.22 × 10-4 513 2000 0.00104 1030 3000 0.00157 1540 4000 0.00209 2050 5000 0.00261 2560 6000 0.00313 3080 7000 0.00365 3590 8000 0.00418 4100 9000 0.00470 4610 1.00 × 104 0.00522 5130 2.00 × 104 0.0104 1.03 × 104 3.00 × 104 0.0157 1.54 × 104 4.00 × 104 0.0209 2.05 × 104 5.00 × 104 0.0261 2.56 × 104 6.00 × 104 0.0313 3.08 × 104 7.00 × 104 0.0365 3.59 × 104 8.00 × 104 0.0418 4.10 × 104 9.00 × 104 0.0470 4.61 × 104 1.00 × 105 0.0522 5.13 × 104 2.00 × 105 0.104 1.03 × 105 3.00 × 105 0.157 1.54 × 105 4.00 × 105 0.209 2.05 × 105 5.00 × 105 0.261 2.56 × 105 5.79 × 105 0.302 2.97 × 105
 Steel I Beam: W14 × 43 (Wide Flange 14 inch tall × 43 lbf/ft) L = 10.0 ft (lbf/ft) (in) (psi) 43.0 3.59 × 10-4 88.2 50.0 4.18 × 10-4 103 60.0 5.01 × 10-4 123 70.0 5.85 × 10-4 144 80.0 6.68 × 10-4 164 90.0 7.52 × 10-4 185 100 8.35 × 10-4 205 200 0.00167 410 300 0.00251 615 400 0.00334 820 500 0.00418 1030 600 0.00501 1230 700 0.00585 1440 800 0.00668 1640 900 0.00752 1850 1000 0.00835 2050 2000 0.0167 4100 3000 0.0251 6150 4000 0.0334 8200 5000 0.0418 1.03 × 104 6000 0.0501 1.23 × 104 7000 0.0585 1.44 × 104 8000 0.0668 1.64 × 104 9000 0.0752 1.85 × 104 1.00 × 104 0.0835 2.05 × 104 2.00 × 104 0.167 4.10 × 104 3.00 × 104 0.251 6.15 × 104 4.00 × 104 0.334 8.20 × 104 5.00 × 104 0.418 1.03 × 105 6.00 × 104 0.501 1.23 × 105 7.00 × 104 0.585 1.44 × 105 8.00 × 104 0.668 1.64 × 105 9.00 × 104 0.752 1.85 × 105 1.00 × 105 0.835 2.05 × 105 1.45 × 105 1.21 2.97 × 105
 Steel I Beam: W14 × 43 (Wide Flange 14 inch tall × 43 lbf/ft) L = 15.0 ft (lbf/ft) (in) (psi) 43.0 0.00182 198 50.0 0.00211 231 60.0 0.00254 277 70.0 0.00296 323 80.0 0.00338 369 90.0 0.00380 415 100 0.00423 461 200 0.00846 923 300 0.0127 1380 400 0.0169 1850 500 0.0211 2310 600 0.0254 2770 700 0.0296 3230 800 0.0338 3690 900 0.0380 4150 1000 0.0423 4610 2000 0.0846 9230 3000 0.127 1.38 × 104 4000 0.169 1.85 × 104 5000 0.211 2.31 × 104 6000 0.254 2.77 × 104 7000 0.296 3.23 × 104 8000 0.338 3.69 × 104 9000 0.380 4.15 × 104 1.00 × 104 0.423 4.61 × 104 2.00 × 104 0.846 9.23 × 104 3.00 × 104 1.27 1.38 × 105 4.00 × 104 1.69 1.85 × 105 5.00 × 104 2.11 2.31 × 105 6.00 × 104 2.54 2.77 × 105 6.44 × 104 2.72 2.97 × 105
 Steel I Beam: W14 × 43 (Wide Flange 14 inch tall × 43 lbf/ft) L = 20.0 ft (lbf/ft) (in) (psi) 43.0 0.00575 353 50.0 0.00668 410 60.0 0.00802 492 70.0 0.00935 574 80.0 0.0107 656 90.0 0.0120 738 100 0.0134 820 200 0.0267 1640 300 0.0401 2460 400 0.0534 3280 500 0.0668 4100 600 0.0802 4920 700 0.0935 5740 800 0.107 6560 900 0.120 7380 1000 0.134 8200 2000 0.267 1.64 × 104 3000 0.401 2.46 × 104 4000 0.534 3.28 × 104 5000 0.668 4.10 × 104 6000 0.802 4.92 × 104 7000 0.935 5.74 × 104 8000 1.07 6.56 × 104 9000 1.20 7.38 × 104 1.00 × 104 1.34 8.20 × 104 2.00 × 104 2.67 1.64 × 105 3.00 × 104 4.01 2.46 × 105 3.62 × 104 4.84 2.97 × 105
 Steel I Beam: W14 × 43 (Wide Flange 14 inch tall × 43 lbf/ft) L = 25.0 ft (lbf/ft) (in) (psi) 43.0 0.0140 551 50.0 0.0163 641 60.0 0.0196 769 70.0 0.0228 897 80.0 0.0261 1030 90.0 0.0294 1150 100 0.0326 1280 200 0.0652 2560 300 0.0979 3850 400 0.130 5130 500 0.163 6410 600 0.196 7690 700 0.228 8970 800 0.261 1.03 × 104 900 0.294 1.15 × 104 1000 0.326 1.28 × 104 2000 0.652 2.56 × 104 3000 0.979 3.85 × 104 4000 1.30 5.13 × 104 5000 1.63 6.41 × 104 6000 1.96 7.69 × 104 7000 2.28 8.97 × 104 8000 2.61 1.03 × 105 9000 2.94 1.15 × 105 1.00 × 104 3.26 1.28 × 105 2.00 × 104 6.52 2.56 × 105 2.32 × 104 7.56 2.97 × 105
 Steel I Beam: W14 × 43 (Wide Flange 14 inch tall × 43 lbf/ft) L = 30.0 ft (lbf/ft) (in) (psi) 43.0 0.0291 794 50.0 0.0338 923 60.0 0.0406 1110 70.0 0.0474 1290 80.0 0.0541 1480 90.0 0.0609 1660 100 0.0676 1850 200 0.135 3690 300 0.203 5540 400 0.271 7380 500 0.338 9230 600 0.406 1.11 × 104 700 0.474 1.29 × 104 800 0.541 1.48 × 104 900 0.609 1.66 × 104 1000 0.676 1.85 × 104 2000 1.35 3.69 × 104 3000 2.03 5.54 × 104 4000 2.71 7.38 × 104 5000 3.38 9.23 × 104 6000 4.06 1.11 × 105 7000 4.74 1.29 × 105 8000 5.41 1.48 × 105 9000 6.09 1.66 × 105 1.00 × 104 6.76 1.85 × 105 1.61 × 104 10.9 2.97 × 105
 Steel I Beam: W14 × 43 (Wide Flange 14 inch tall × 43 lbf/ft) L = 40.0 ft (lbf/ft) (in) (psi) 43.0 0.0919 1410 50.0 0.107 1640 60.0 0.128 1970 70.0 0.150 2300 80.0 0.171 2630 90.0 0.192 2950 100 0.214 3280 200 0.428 6560 300 0.641 9840 400 0.855 1.31 × 104 500 1.07 1.64 × 104 600 1.28 1.97 × 104 700 1.50 2.30 × 104 800 1.71 2.63 × 104 900 1.92 2.95 × 104 1000 2.14 3.28 × 104 2000 4.28 6.56 × 104 3000 6.41 9.84 × 104 4000 8.55 1.31 × 105 5000 10.7 1.64 × 105 6000 12.8 1.97 × 105 6390 13.7 2.10 × 105
 Steel I Beam: W14 × 43 (Wide Flange 14 inch tall × 43 lbf/ft) L = 50.0 ft (lbf/ft) (in) (psi) 43.0 0.224 2200 50.0 0.261 2560 60.0 0.313 3080 70.0 0.365 3590 80.0 0.418 4100 90.0 0.470 4610 100 0.522 5130 200 1.04 1.03 × 104 300 1.57 1.54 × 104 400 2.09 2.05 × 104 500 2.61 2.56 × 104 600 3.13 3.08 × 104 700 3.65 3.59 × 104 800 4.18 4.10 × 104 900 4.70 4.61 × 104 1000 5.22 5.13 × 104 2000 10.4 1.03 × 105 2620 13.7 1.34 × 105
 Steel I Beam: W14 × 43 (Wide Flange 14 inch tall × 43 lbf/ft) L = 60.0 ft (lbf/ft) (in) (psi) 43.0 0.465 3170 50.0 0.541 3690 60.0 0.649 4430 70.0 0.758 5170 80.0 0.866 5910 90.0 0.974 6640 100 1.08 7380 200 2.16 1.48 × 104 300 3.25 2.21 × 104 400 4.33 2.95 × 104 500 5.41 3.69 × 104 600 6.49 4.43 × 104 700 7.58 5.17 × 104 800 8.66 5.91 × 104 900 9.74 6.64 × 104 1000 10.8 7.38 × 104 1260 13.7 9.32 × 104
 Steel I Beam: W14 × 43 (Wide Flange 14 inch tall × 43 lbf/ft) L = 70.0 ft (lbf/ft) (in) (psi) 43.0 0.862 4320 50.0 1.00 5020 60.0 1.20 6030 70.0 1.40 7030 80.0 1.60 8040 90.0 1.80 9040 100 2.01 1.00 × 104 200 4.01 2.01 × 104 300 6.02 3.01 × 104 400 8.02 4.02 × 104 500 10.0 5.02 × 104 600 12.0 6.03 × 104 681 13.7 6.85 × 104
 Steel I Beam: W14 × 43 (Wide Flange 14 inch tall × 43 lbf/ft) L = 80.0 ft (lbf/ft) (in) (psi) 43.0 1.47 5640 50.0 1.71 6560 60.0 2.05 7880 70.0 2.39 9190 80.0 2.74 1.05 × 104 90.0 3.08 1.18 × 104 100 3.42 1.31 × 104 200 6.84 2.63 × 104 300 10.3 3.94 × 104 399 13.7 5.24 × 104
 Steel I Beam: W14 × 43 (Wide Flange 14 inch tall × 43 lbf/ft) L = 90.0 ft (lbf/ft) (in) (psi) 43.0 2.36 7140 50.0 2.74 8310 60.0 3.29 9970 70.0 3.84 1.16 × 104 80.0 4.38 1.33 × 104 90.0 4.93 1.50 × 104 100 5.48 1.66 × 104 200 11.0 3.32 × 104 249 13.7 4.14 × 104
 Steel I Beam: W14 × 43 (Wide Flange 14 inch tall × 43 lbf/ft) L = 100 ft (lbf/ft) (in) (psi) 43.0 3.59 8820 50.0 4.18 1.03 × 104 60.0 5.01 1.23 × 104 70.0 5.85 1.44 × 104 80.0 6.68 1.64 × 104 90.0 7.52 1.85 × 104 100 8.35 2.05 × 104 164 13.7 3.35 × 104
 Steel I Beam: W14 × 43 (Wide Flange 14 inch tall × 43 lbf/ft) L = 125 ft (lbf/ft) (in) (psi) 43.0 8.77 1.38 × 104 50.0 10.2 1.60 × 104 60.0 12.2 1.92 × 104 67.0 13.7 2.15 × 104