S Section Steel I Beam: S12 × 50

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Glossary » Beams » Simply Supported » Uniformly Distributed Load » Two Equal Spans » S Section Steel I Beam » S12 × 50
S Section 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 and the maximum normal stress 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 = 305 in4) for the S12 × 50 S Section 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: S12 × 50 (S12 inch tall × 50 lbf/ft) L = 3.00 ft (lbf/ft) (in) (psi) 50.0 3.92 × 10-6 13.3 60.0 4.71 × 10-6 15.9 70.0 5.49 × 10-6 18.6 80.0 6.28 × 10-6 21.2 90.0 7.06 × 10-6 23.9 100 7.85 × 10-6 26.6 200 1.57 × 10-5 53.1 300 2.35 × 10-5 79.7 400 3.14 × 10-5 106 500 3.92 × 10-5 133 600 4.71 × 10-5 159 700 5.49 × 10-5 186 800 6.28 × 10-5 212 900 7.06 × 10-5 239 1000 7.85 × 10-5 266 2000 1.57 × 10-4 531 3000 2.35 × 10-4 797 4000 3.14 × 10-4 1060 5000 3.92 × 10-4 1330 6000 4.71 × 10-4 1590 7000 5.49 × 10-4 1860 8000 6.28 × 10-4 2120 9000 7.06 × 10-4 2390 1.00 × 104 7.85 × 10-4 2660 2.00 × 104 0.00157 5310 3.00 × 104 0.00235 7970 4.00 × 104 0.00314 1.06 × 104 5.00 × 104 0.00392 1.33 × 104 6.00 × 104 0.00471 1.59 × 104 7.00 × 104 0.00549 1.86 × 104 8.00 × 104 0.00628 2.12 × 104 9.00 × 104 0.00706 2.39 × 104 1.00 × 105 0.00785 2.66 × 104 2.00 × 105 0.0157 5.31 × 104 3.00 × 105 0.0235 7.97 × 104 4.00 × 105 0.0314 1.06 × 105 5.00 × 105 0.0392 1.33 × 105 6.00 × 105 0.0471 1.59 × 105 7.00 × 105 0.0549 1.86 × 105 8.00 × 105 0.0628 2.12 × 105 9.00 × 105 0.0706 2.39 × 105 1.00 × 106 0.0785 2.66 × 105 1.12 × 106 0.0878 2.97 × 105
 Steel I Beam: S12 × 50 (S12 inch tall × 50 lbf/ft) L = 5.00 ft (lbf/ft) (in) (psi) 50.0 3.03 × 10-5 36.9 60.0 3.63 × 10-5 44.3 70.0 4.24 × 10-5 51.6 80.0 4.84 × 10-5 59.0 90.0 5.45 × 10-5 66.4 100 6.06 × 10-5 73.8 200 1.21 × 10-4 148 300 1.82 × 10-4 221 400 2.42 × 10-4 295 500 3.03 × 10-4 369 600 3.63 × 10-4 443 700 4.24 × 10-4 516 800 4.84 × 10-4 590 900 5.45 × 10-4 664 1000 6.06 × 10-4 738 2000 0.00121 1480 3000 0.00182 2210 4000 0.00242 2950 5000 0.00303 3690 6000 0.00363 4430 7000 0.00424 5160 8000 0.00484 5900 9000 0.00545 6640 1.00 × 104 0.00606 7380 2.00 × 104 0.0121 1.48 × 104 3.00 × 104 0.0182 2.21 × 104 4.00 × 104 0.0242 2.95 × 104 5.00 × 104 0.0303 3.69 × 104 6.00 × 104 0.0363 4.43 × 104 7.00 × 104 0.0424 5.16 × 104 8.00 × 104 0.0484 5.90 × 104 9.00 × 104 0.0545 6.64 × 104 1.00 × 105 0.0606 7.38 × 104 2.00 × 105 0.121 1.48 × 105 3.00 × 105 0.182 2.21 × 105 4.00 × 105 0.242 2.95 × 105 4.03 × 105 0.244 2.97 × 105
 Steel I Beam: S12 × 50 (S12 inch tall × 50 lbf/ft) L = 10.0 ft (lbf/ft) (in) (psi) 50.0 4.84 × 10-4 148 60.0 5.81 × 10-4 177 70.0 6.78 × 10-4 207 80.0 7.75 × 10-4 236 90.0 8.72 × 10-4 266 100 9.69 × 10-4 295 200 0.00194 590 300 0.00291 885 400 0.00388 1180 500 0.00484 1480 600 0.00581 1770 700 0.00678 2070 800 0.00775 2360 900 0.00872 2660 1000 0.00969 2950 2000 0.0194 5900 3000 0.0291 8850 4000 0.0388 1.18 × 104 5000 0.0484 1.48 × 104 6000 0.0581 1.77 × 104 7000 0.0678 2.07 × 104 8000 0.0775 2.36 × 104 9000 0.0872 2.66 × 104 1.00 × 104 0.0969 2.95 × 104 2.00 × 104 0.194 5.90 × 104 3.00 × 104 0.291 8.85 × 104 4.00 × 104 0.388 1.18 × 105 5.00 × 104 0.484 1.48 × 105 6.00 × 104 0.581 1.77 × 105 7.00 × 104 0.678 2.07 × 105 8.00 × 104 0.775 2.36 × 105 9.00 × 104 0.872 2.66 × 105 1.00 × 105 0.969 2.95 × 105 1.01 × 105 0.975 2.97 × 105
 Steel I Beam: S12 × 50 (S12 inch tall × 50 lbf/ft) L = 15.0 ft (lbf/ft) (in) (psi) 50.0 0.00245 332 60.0 0.00294 398 70.0 0.00343 465 80.0 0.00392 531 90.0 0.00441 598 100 0.00490 664 200 0.00981 1330 300 0.0147 1990 400 0.0196 2660 500 0.0245 3320 600 0.0294 3980 700 0.0343 4650 800 0.0392 5310 900 0.0441 5980 1000 0.0490 6640 2000 0.0981 1.33 × 104 3000 0.147 1.99 × 104 4000 0.196 2.66 × 104 5000 0.245 3.32 × 104 6000 0.294 3.98 × 104 7000 0.343 4.65 × 104 8000 0.392 5.31 × 104 9000 0.441 5.98 × 104 1.00 × 104 0.490 6.64 × 104 2.00 × 104 0.981 1.33 × 105 3.00 × 104 1.47 1.99 × 105 4.00 × 104 1.96 2.66 × 105 4.47 × 104 2.19 2.97 × 105
 Steel I Beam: S12 × 50 (S12 inch tall × 50 lbf/ft) L = 20.0 ft (lbf/ft) (in) (psi) 50.0 0.00775 590 60.0 0.00930 708 70.0 0.0109 826 80.0 0.0124 944 90.0 0.0140 1060 100 0.0155 1180 200 0.0310 2360 300 0.0465 3540 400 0.0620 4720 500 0.0775 5900 600 0.0930 7080 700 0.109 8260 800 0.124 9440 900 0.140 1.06 × 104 1000 0.155 1.18 × 104 2000 0.310 2.36 × 104 3000 0.465 3.54 × 104 4000 0.620 4.72 × 104 5000 0.775 5.90 × 104 6000 0.930 7.08 × 104 7000 1.09 8.26 × 104 8000 1.24 9.44 × 104 9000 1.40 1.06 × 105 1.00 × 104 1.55 1.18 × 105 2.00 × 104 3.10 2.36 × 105 2.52 × 104 3.90 2.97 × 105
 Steel I Beam: S12 × 50 (S12 inch tall × 50 lbf/ft) L = 25.0 ft (lbf/ft) (in) (psi) 50.0 0.0189 922 60.0 0.0227 1110 70.0 0.0265 1290 80.0 0.0303 1480 90.0 0.0341 1660 100 0.0378 1840 200 0.0757 3690 300 0.114 5530 400 0.151 7380 500 0.189 9220 600 0.227 1.11 × 104 700 0.265 1.29 × 104 800 0.303 1.48 × 104 900 0.341 1.66 × 104 1000 0.378 1.84 × 104 2000 0.757 3.69 × 104 3000 1.14 5.53 × 104 4000 1.51 7.38 × 104 5000 1.89 9.22 × 104 6000 2.27 1.11 × 105 7000 2.65 1.29 × 105 8000 3.03 1.48 × 105 9000 3.41 1.66 × 105 1.00 × 104 3.78 1.84 × 105 1.61 × 104 6.10 2.97 × 105
 Steel I Beam: S12 × 50 (S12 inch tall × 50 lbf/ft) L = 30.0 ft (lbf/ft) (in) (psi) 50.0 0.0392 1330 60.0 0.0471 1590 70.0 0.0549 1860 80.0 0.0628 2120 90.0 0.0706 2390 100 0.0785 2660 200 0.157 5310 300 0.235 7970 400 0.314 1.06 × 104 500 0.392 1.33 × 104 600 0.471 1.59 × 104 700 0.549 1.86 × 104 800 0.628 2.12 × 104 900 0.706 2.39 × 104 1000 0.785 2.66 × 104 2000 1.57 5.31 × 104 3000 2.35 7.97 × 104 4000 3.14 1.06 × 105 5000 3.92 1.33 × 105 6000 4.71 1.59 × 105 7000 5.49 1.86 × 105 8000 6.28 2.12 × 105 9000 7.06 2.39 × 105 1.00 × 104 7.85 2.66 × 105 1.12 × 104 8.78 2.97 × 105
 Steel I Beam: S12 × 50 (S12 inch tall × 50 lbf/ft) L = 40.0 ft (lbf/ft) (in) (psi) 50.0 0.124 2360 60.0 0.149 2830 70.0 0.174 3300 80.0 0.198 3780 90.0 0.223 4250 100 0.248 4720 200 0.496 9440 300 0.744 1.42 × 104 400 0.992 1.89 × 104 500 1.24 2.36 × 104 600 1.49 2.83 × 104 700 1.74 3.30 × 104 800 1.98 3.78 × 104 900 2.23 4.25 × 104 1000 2.48 4.72 × 104 2000 4.96 9.44 × 104 3000 7.44 1.42 × 105 4000 9.92 1.89 × 105 4840 12.0 2.28 × 105
 Steel I Beam: S12 × 50 (S12 inch tall × 50 lbf/ft) L = 50.0 ft (lbf/ft) (in) (psi) 50.0 0.303 3690 60.0 0.363 4430 70.0 0.424 5160 80.0 0.484 5900 90.0 0.545 6640 100 0.606 7380 200 1.21 1.48 × 104 300 1.82 2.21 × 104 400 2.42 2.95 × 104 500 3.03 3.69 × 104 600 3.63 4.43 × 104 700 4.24 5.16 × 104 800 4.84 5.90 × 104 900 5.45 6.64 × 104 1000 6.06 7.38 × 104 1980 12.0 1.46 × 105
 Steel I Beam: S12 × 50 (S12 inch tall × 50 lbf/ft) L = 60.0 ft (lbf/ft) (in) (psi) 50.0 0.628 5310 60.0 0.753 6370 70.0 0.879 7440 80.0 1.00 8500 90.0 1.13 9560 100 1.26 1.06 × 104 200 2.51 2.12 × 104 300 3.77 3.19 × 104 400 5.02 4.25 × 104 500 6.28 5.31 × 104 600 7.53 6.37 × 104 700 8.79 7.44 × 104 800 10.0 8.50 × 104 900 11.3 9.56 × 104 956 12.0 1.02 × 105
 Steel I Beam: S12 × 50 (S12 inch tall × 50 lbf/ft) L = 70.0 ft (lbf/ft) (in) (psi) 50.0 1.16 7230 60.0 1.40 8680 70.0 1.63 1.01 × 104 80.0 1.86 1.16 × 104 90.0 2.09 1.30 × 104 100 2.33 1.45 × 104 200 4.65 2.89 × 104 300 6.98 4.34 × 104 400 9.30 5.78 × 104 500 11.6 7.23 × 104 516 12.0 7.46 × 104
 Steel I Beam: S12 × 50 (S12 inch tall × 50 lbf/ft) L = 80.0 ft (lbf/ft) (in) (psi) 50.0 1.98 9440 60.0 2.38 1.13 × 104 70.0 2.78 1.32 × 104 80.0 3.17 1.51 × 104 90.0 3.57 1.70 × 104 100 3.97 1.89 × 104 200 7.94 3.78 × 104 300 11.9 5.67 × 104 302 12.0 5.71 × 104
 Steel I Beam: S12 × 50 (S12 inch tall × 50 lbf/ft) L = 90.0 ft (lbf/ft) (in) (psi) 50.0 3.18 1.20 × 104 60.0 3.81 1.43 × 104 70.0 4.45 1.67 × 104 80.0 5.09 1.91 × 104 90.0 5.72 2.15 × 104 100 6.36 2.39 × 104 189 12.0 4.51 × 104
 Steel I Beam: S12 × 50 (S12 inch tall × 50 lbf/ft) L = 100 ft (lbf/ft) (in) (psi) 50.0 4.84 1.48 × 104 60.0 5.81 1.77 × 104 70.0 6.78 2.07 × 104 80.0 7.75 2.36 × 104 90.0 8.72 2.66 × 104 100 9.69 2.95 × 104 124 12.0 3.65 × 104
 Steel I Beam: S12 × 50 (S12 inch tall × 50 lbf/ft) L = 125 ft (lbf/ft) (in) (psi) 50.0 11.8 2.31 × 104 50.7 12.0 2.34 × 104