S Section Steel I Beam: S12 × 35

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Glossary » Beams » Simply Supported » Uniformly Distributed Load » Two Equal Spans » S Section Steel I Beam » S12 × 35
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 = 229 in4) for the S12 × 35 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 × 35 (S12 inch tall × 35 lbf/ft) L = 3.00 ft (lbf/ft) (in) (psi) 35.0 3.66 × 10-6 12.4 40.0 4.18 × 10-6 14.1 50.0 5.23 × 10-6 17.7 60.0 6.27 × 10-6 21.2 70.0 7.32 × 10-6 24.8 80.0 8.36 × 10-6 28.3 90.0 9.41 × 10-6 31.8 100 1.05 × 10-5 35.4 200 2.09 × 10-5 70.7 300 3.14 × 10-5 106 400 4.18 × 10-5 141 500 5.23 × 10-5 177 600 6.27 × 10-5 212 700 7.32 × 10-5 248 800 8.36 × 10-5 283 900 9.41 × 10-5 318 1000 1.05 × 10-4 354 2000 2.09 × 10-4 707 3000 3.14 × 10-4 1060 4000 4.18 × 10-4 1410 5000 5.23 × 10-4 1770 6000 6.27 × 10-4 2120 7000 7.32 × 10-4 2480 8000 8.36 × 10-4 2830 9000 9.41 × 10-4 3180 1.00 × 104 0.00105 3540 2.00 × 104 0.00209 7070 3.00 × 104 0.00314 1.06 × 104 4.00 × 104 0.00418 1.41 × 104 5.00 × 104 0.00523 1.77 × 104 6.00 × 104 0.00627 2.12 × 104 7.00 × 104 0.00732 2.48 × 104 8.00 × 104 0.00836 2.83 × 104 9.00 × 104 0.00941 3.18 × 104 1.00 × 105 0.0105 3.54 × 104 2.00 × 105 0.0209 7.07 × 104 3.00 × 105 0.0314 1.06 × 105 4.00 × 105 0.0418 1.41 × 105 5.00 × 105 0.0523 1.77 × 105 6.00 × 105 0.0627 2.12 × 105 7.00 × 105 0.0732 2.48 × 105 8.00 × 105 0.0836 2.83 × 105 8.40 × 105 0.0878 2.97 × 105
 Steel I Beam: S12 × 35 (S12 inch tall × 35 lbf/ft) L = 5.00 ft (lbf/ft) (in) (psi) 35.0 2.82 × 10-5 34.4 40.0 3.23 × 10-5 39.3 50.0 4.03 × 10-5 49.1 60.0 4.84 × 10-5 59.0 70.0 5.65 × 10-5 68.8 80.0 6.45 × 10-5 78.6 90.0 7.26 × 10-5 88.4 100 8.06 × 10-5 98.3 200 1.61 × 10-4 197 300 2.42 × 10-4 295 400 3.23 × 10-4 393 500 4.03 × 10-4 491 600 4.84 × 10-4 590 700 5.65 × 10-4 688 800 6.45 × 10-4 786 900 7.26 × 10-4 884 1000 8.06 × 10-4 983 2000 0.00161 1970 3000 0.00242 2950 4000 0.00323 3930 5000 0.00403 4910 6000 0.00484 5900 7000 0.00565 6880 8000 0.00645 7860 9000 0.00726 8840 1.00 × 104 0.00806 9830 2.00 × 104 0.0161 1.97 × 104 3.00 × 104 0.0242 2.95 × 104 4.00 × 104 0.0323 3.93 × 104 5.00 × 104 0.0403 4.91 × 104 6.00 × 104 0.0484 5.90 × 104 7.00 × 104 0.0565 6.88 × 104 8.00 × 104 0.0645 7.86 × 104 9.00 × 104 0.0726 8.84 × 104 1.00 × 105 0.0806 9.83 × 104 2.00 × 105 0.161 1.97 × 105 3.00 × 105 0.242 2.95 × 105 3.02 × 105 0.244 2.97 × 105
 Steel I Beam: S12 × 35 (S12 inch tall × 35 lbf/ft) L = 10.0 ft (lbf/ft) (in) (psi) 35.0 4.52 × 10-4 138 40.0 5.16 × 10-4 157 50.0 6.45 × 10-4 197 60.0 7.74 × 10-4 236 70.0 9.03 × 10-4 275 80.0 0.00103 314 90.0 0.00116 354 100 0.00129 393 200 0.00258 786 300 0.00387 1180 400 0.00516 1570 500 0.00645 1970 600 0.00774 2360 700 0.00903 2750 800 0.0103 3140 900 0.0116 3540 1000 0.0129 3930 2000 0.0258 7860 3000 0.0387 1.18 × 104 4000 0.0516 1.57 × 104 5000 0.0645 1.97 × 104 6000 0.0774 2.36 × 104 7000 0.0903 2.75 × 104 8000 0.103 3.14 × 104 9000 0.116 3.54 × 104 1.00 × 104 0.129 3.93 × 104 2.00 × 104 0.258 7.86 × 104 3.00 × 104 0.387 1.18 × 105 4.00 × 104 0.516 1.57 × 105 5.00 × 104 0.645 1.97 × 105 6.00 × 104 0.774 2.36 × 105 7.00 × 104 0.903 2.75 × 105 7.56 × 104 0.975 2.97 × 105
 Steel I Beam: S12 × 35 (S12 inch tall × 35 lbf/ft) L = 15.0 ft (lbf/ft) (in) (psi) 35.0 0.00229 309 40.0 0.00261 354 50.0 0.00327 442 60.0 0.00392 531 70.0 0.00457 619 80.0 0.00523 707 90.0 0.00588 796 100 0.00653 884 200 0.0131 1770 300 0.0196 2650 400 0.0261 3540 500 0.0327 4420 600 0.0392 5310 700 0.0457 6190 800 0.0523 7070 900 0.0588 7960 1000 0.0653 8840 2000 0.131 1.77 × 104 3000 0.196 2.65 × 104 4000 0.261 3.54 × 104 5000 0.327 4.42 × 104 6000 0.392 5.31 × 104 7000 0.457 6.19 × 104 8000 0.523 7.07 × 104 9000 0.588 7.96 × 104 1.00 × 104 0.653 8.84 × 104 2.00 × 104 1.31 1.77 × 105 3.00 × 104 1.96 2.65 × 105 3.36 × 104 2.19 2.97 × 105
 Steel I Beam: S12 × 35 (S12 inch tall × 35 lbf/ft) L = 20.0 ft (lbf/ft) (in) (psi) 35.0 0.00723 550 40.0 0.00826 629 50.0 0.0103 786 60.0 0.0124 943 70.0 0.0145 1100 80.0 0.0165 1260 90.0 0.0186 1410 100 0.0206 1570 200 0.0413 3140 300 0.0619 4720 400 0.0826 6290 500 0.103 7860 600 0.124 9430 700 0.145 1.10 × 104 800 0.165 1.26 × 104 900 0.186 1.41 × 104 1000 0.206 1.57 × 104 2000 0.413 3.14 × 104 3000 0.619 4.72 × 104 4000 0.826 6.29 × 104 5000 1.03 7.86 × 104 6000 1.24 9.43 × 104 7000 1.45 1.10 × 105 8000 1.65 1.26 × 105 9000 1.86 1.41 × 105 1.00 × 104 2.06 1.57 × 105 1.89 × 104 3.90 2.97 × 105
 Steel I Beam: S12 × 35 (S12 inch tall × 35 lbf/ft) L = 25.0 ft (lbf/ft) (in) (psi) 35.0 0.0176 860 40.0 0.0202 983 50.0 0.0252 1230 60.0 0.0302 1470 70.0 0.0353 1720 80.0 0.0403 1970 90.0 0.0454 2210 100 0.0504 2460 200 0.101 4910 300 0.151 7370 400 0.202 9830 500 0.252 1.23 × 104 600 0.302 1.47 × 104 700 0.353 1.72 × 104 800 0.403 1.97 × 104 900 0.454 2.21 × 104 1000 0.504 2.46 × 104 2000 1.01 4.91 × 104 3000 1.51 7.37 × 104 4000 2.02 9.83 × 104 5000 2.52 1.23 × 105 6000 3.02 1.47 × 105 7000 3.53 1.72 × 105 8000 4.03 1.97 × 105 9000 4.54 2.21 × 105 1.00 × 104 5.04 2.46 × 105 1.21 × 104 6.10 2.97 × 105
 Steel I Beam: S12 × 35 (S12 inch tall × 35 lbf/ft) L = 30.0 ft (lbf/ft) (in) (psi) 35.0 0.0366 1240 40.0 0.0418 1410 50.0 0.0523 1770 60.0 0.0627 2120 70.0 0.0732 2480 80.0 0.0836 2830 90.0 0.0941 3180 100 0.105 3540 200 0.209 7070 300 0.314 1.06 × 104 400 0.418 1.41 × 104 500 0.523 1.77 × 104 600 0.627 2.12 × 104 700 0.732 2.48 × 104 800 0.836 2.83 × 104 900 0.941 3.18 × 104 1000 1.05 3.54 × 104 2000 2.09 7.07 × 104 3000 3.14 1.06 × 105 4000 4.18 1.41 × 105 5000 5.23 1.77 × 105 6000 6.27 2.12 × 105 7000 7.32 2.48 × 105 8000 8.36 2.83 × 105 8400 8.78 2.97 × 105
 Steel I Beam: S12 × 35 (S12 inch tall × 35 lbf/ft) L = 40.0 ft (lbf/ft) (in) (psi) 35.0 0.116 2200 40.0 0.132 2520 50.0 0.165 3140 60.0 0.198 3770 70.0 0.231 4400 80.0 0.264 5030 90.0 0.297 5660 100 0.330 6290 200 0.661 1.26 × 104 300 0.991 1.89 × 104 400 1.32 2.52 × 104 500 1.65 3.14 × 104 600 1.98 3.77 × 104 700 2.31 4.40 × 104 800 2.64 5.03 × 104 900 2.97 5.66 × 104 1000 3.30 6.29 × 104 2000 6.61 1.26 × 105 3000 9.91 1.89 × 105 3630 12.0 2.28 × 105
 Steel I Beam: S12 × 35 (S12 inch tall × 35 lbf/ft) L = 50.0 ft (lbf/ft) (in) (psi) 35.0 0.282 3440 40.0 0.323 3930 50.0 0.403 4910 60.0 0.484 5900 70.0 0.565 6880 80.0 0.645 7860 90.0 0.726 8840 100 0.806 9830 200 1.61 1.97 × 104 300 2.42 2.95 × 104 400 3.23 3.93 × 104 500 4.03 4.91 × 104 600 4.84 5.90 × 104 700 5.65 6.88 × 104 800 6.45 7.86 × 104 900 7.26 8.84 × 104 1000 8.06 9.83 × 104 1490 12.0 1.46 × 105
 Steel I Beam: S12 × 35 (S12 inch tall × 35 lbf/ft) L = 60.0 ft (lbf/ft) (in) (psi) 35.0 0.585 4950 40.0 0.669 5660 50.0 0.836 7070 60.0 1.00 8490 70.0 1.17 9900 80.0 1.34 1.13 × 104 90.0 1.51 1.27 × 104 100 1.67 1.41 × 104 200 3.34 2.83 × 104 300 5.02 4.24 × 104 400 6.69 5.66 × 104 500 8.36 7.07 × 104 600 10.0 8.49 × 104 700 11.7 9.90 × 104 718 12.0 1.02 × 105
 Steel I Beam: S12 × 35 (S12 inch tall × 35 lbf/ft) L = 70.0 ft (lbf/ft) (in) (psi) 35.0 1.08 6740 40.0 1.24 7700 50.0 1.55 9630 60.0 1.86 1.16 × 104 70.0 2.17 1.35 × 104 80.0 2.48 1.54 × 104 90.0 2.79 1.73 × 104 100 3.10 1.93 × 104 200 6.20 3.85 × 104 300 9.29 5.78 × 104 387 12.0 7.46 × 104
 Steel I Beam: S12 × 35 (S12 inch tall × 35 lbf/ft) L = 80.0 ft (lbf/ft) (in) (psi) 35.0 1.85 8800 40.0 2.11 1.01 × 104 50.0 2.64 1.26 × 104 60.0 3.17 1.51 × 104 70.0 3.70 1.76 × 104 80.0 4.23 2.01 × 104 90.0 4.76 2.26 × 104 100 5.29 2.52 × 104 200 10.6 5.03 × 104 227 12.0 5.71 × 104
 Steel I Beam: S12 × 35 (S12 inch tall × 35 lbf/ft) L = 90.0 ft (lbf/ft) (in) (psi) 35.0 2.96 1.11 × 104 40.0 3.39 1.27 × 104 50.0 4.23 1.59 × 104 60.0 5.08 1.91 × 104 70.0 5.93 2.23 × 104 80.0 6.77 2.55 × 104 90.0 7.62 2.87 × 104 100 8.47 3.18 × 104 142 12.0 4.51 × 104
 Steel I Beam: S12 × 35 (S12 inch tall × 35 lbf/ft) L = 100 ft (lbf/ft) (in) (psi) 35.0 4.52 1.38 × 104 40.0 5.16 1.57 × 104 50.0 6.45 1.97 × 104 60.0 7.74 2.36 × 104 70.0 9.03 2.75 × 104 80.0 10.3 3.14 × 104 90.0 11.6 3.54 × 104 93.0 12.0 3.65 × 104
 Steel I Beam: S12 × 35 (S12 inch tall × 35 lbf/ft) L = 125 ft (lbf/ft) (in) (psi) 35.0 11.0 2.15 × 104 38.1 12.0 2.34 × 104