S Section Steel I Beam: S12 × 35

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Glossary » Beams » Simply Supported » Uniformly Distributed Load » Four 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 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 = 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 4.42 × 10-6 10.6 40.0 5.06 × 10-6 12.1 50.0 6.32 × 10-6 15.2 60.0 7.59 × 10-6 18.2 70.0 8.85 × 10-6 21.2 80.0 1.01 × 10-5 24.2 90.0 1.14 × 10-5 27.3 100 1.26 × 10-5 30.3 200 2.53 × 10-5 60.6 300 3.79 × 10-5 90.9 400 5.06 × 10-5 121 500 6.32 × 10-5 152 600 7.59 × 10-5 182 700 8.85 × 10-5 212 800 1.01 × 10-4 242 900 1.14 × 10-4 273 1000 1.26 × 10-4 303 2000 2.53 × 10-4 606 3000 3.79 × 10-4 909 4000 5.06 × 10-4 1210 5000 6.32 × 10-4 1520 6000 7.59 × 10-4 1820 7000 8.85 × 10-4 2120 8000 0.00101 2420 9000 0.00114 2730 1.00 × 104 0.00126 3030 2.00 × 104 0.00253 6060 3.00 × 104 0.00379 9090 4.00 × 104 0.00506 1.21 × 104 5.00 × 104 0.00632 1.52 × 104 6.00 × 104 0.00759 1.82 × 104 7.00 × 104 0.00885 2.12 × 104 8.00 × 104 0.0101 2.42 × 104 9.00 × 104 0.0114 2.73 × 104 1.00 × 105 0.0126 3.03 × 104 2.00 × 105 0.0253 6.06 × 104 3.00 × 105 0.0379 9.09 × 104 4.00 × 105 0.0506 1.21 × 105 5.00 × 105 0.0632 1.52 × 105 6.00 × 105 0.0759 1.82 × 105 7.00 × 105 0.0885 2.12 × 105 8.00 × 105 0.101 2.42 × 105 9.00 × 105 0.114 2.73 × 105 9.80 × 105 0.124 2.97 × 105
 Steel I Beam: S12 × 35 (S12 inch tall × 35 lbf/ft) L = 5.00 ft (lbf/ft) (in) (psi) 35.0 3.41 × 10-5 29.5 40.0 3.90 × 10-5 33.7 50.0 4.88 × 10-5 42.1 60.0 5.85 × 10-5 50.5 70.0 6.83 × 10-5 58.9 80.0 7.80 × 10-5 67.3 90.0 8.78 × 10-5 75.8 100 9.76 × 10-5 84.2 200 1.95 × 10-4 168 300 2.93 × 10-4 253 400 3.90 × 10-4 337 500 4.88 × 10-4 421 600 5.85 × 10-4 505 700 6.83 × 10-4 589 800 7.80 × 10-4 673 900 8.78 × 10-4 758 1000 9.76 × 10-4 842 2000 0.00195 1680 3000 0.00293 2530 4000 0.00390 3370 5000 0.00488 4210 6000 0.00585 5050 7000 0.00683 5890 8000 0.00780 6730 9000 0.00878 7580 1.00 × 104 0.00976 8420 2.00 × 104 0.0195 1.68 × 104 3.00 × 104 0.0293 2.53 × 104 4.00 × 104 0.0390 3.37 × 104 5.00 × 104 0.0488 4.21 × 104 6.00 × 104 0.0585 5.05 × 104 7.00 × 104 0.0683 5.89 × 104 8.00 × 104 0.0780 6.73 × 104 9.00 × 104 0.0878 7.58 × 104 1.00 × 105 0.0976 8.42 × 104 2.00 × 105 0.195 1.68 × 105 3.00 × 105 0.293 2.53 × 105 3.53 × 105 0.344 2.97 × 105
 Steel I Beam: S12 × 35 (S12 inch tall × 35 lbf/ft) L = 10.0 ft (lbf/ft) (in) (psi) 35.0 5.46 × 10-4 118 40.0 6.24 × 10-4 135 50.0 7.80 × 10-4 168 60.0 9.36 × 10-4 202 70.0 0.00109 236 80.0 0.00125 269 90.0 0.00140 303 100 0.00156 337 200 0.00312 673 300 0.00468 1010 400 0.00624 1350 500 0.00780 1680 600 0.00936 2020 700 0.0109 2360 800 0.0125 2690 900 0.0140 3030 1000 0.0156 3370 2000 0.0312 6730 3000 0.0468 1.01 × 104 4000 0.0624 1.35 × 104 5000 0.0780 1.68 × 104 6000 0.0936 2.02 × 104 7000 0.109 2.36 × 104 8000 0.125 2.69 × 104 9000 0.140 3.03 × 104 1.00 × 104 0.156 3.37 × 104 2.00 × 104 0.312 6.73 × 104 3.00 × 104 0.468 1.01 × 105 4.00 × 104 0.624 1.35 × 105 5.00 × 104 0.780 1.68 × 105 6.00 × 104 0.936 2.02 × 105 7.00 × 104 1.09 2.36 × 105 8.00 × 104 1.25 2.69 × 105 8.82 × 104 1.38 2.97 × 105
 Steel I Beam: S12 × 35 (S12 inch tall × 35 lbf/ft) L = 15.0 ft (lbf/ft) (in) (psi) 35.0 0.00277 265 40.0 0.00316 303 50.0 0.00395 379 60.0 0.00474 455 70.0 0.00553 530 80.0 0.00632 606 90.0 0.00711 682 100 0.00790 758 200 0.0158 1520 300 0.0237 2270 400 0.0316 3030 500 0.0395 3790 600 0.0474 4550 700 0.0553 5300 800 0.0632 6060 900 0.0711 6820 1000 0.0790 7580 2000 0.158 1.52 × 104 3000 0.237 2.27 × 104 4000 0.316 3.03 × 104 5000 0.395 3.79 × 104 6000 0.474 4.55 × 104 7000 0.553 5.30 × 104 8000 0.632 6.06 × 104 9000 0.711 6.82 × 104 1.00 × 104 0.790 7.58 × 104 2.00 × 104 1.58 1.52 × 105 3.00 × 104 2.37 2.27 × 105 3.92 × 104 3.10 2.97 × 105
 Steel I Beam: S12 × 35 (S12 inch tall × 35 lbf/ft) L = 20.0 ft (lbf/ft) (in) (psi) 35.0 0.00874 471 40.0 0.00999 539 50.0 0.0125 673 60.0 0.0150 808 70.0 0.0175 943 80.0 0.0200 1080 90.0 0.0225 1210 100 0.0250 1350 200 0.0499 2690 300 0.0749 4040 400 0.0999 5390 500 0.125 6730 600 0.150 8080 700 0.175 9430 800 0.200 1.08 × 104 900 0.225 1.21 × 104 1000 0.250 1.35 × 104 2000 0.499 2.69 × 104 3000 0.749 4.04 × 104 4000 0.999 5.39 × 104 5000 1.25 6.73 × 104 6000 1.50 8.08 × 104 7000 1.75 9.43 × 104 8000 2.00 1.08 × 105 9000 2.25 1.21 × 105 1.00 × 104 2.50 1.35 × 105 2.00 × 104 4.99 2.69 × 105 2.21 × 104 5.51 2.97 × 105
 Steel I Beam: S12 × 35 (S12 inch tall × 35 lbf/ft) L = 25.0 ft (lbf/ft) (in) (psi) 35.0 0.0213 737 40.0 0.0244 842 50.0 0.0305 1050 60.0 0.0366 1260 70.0 0.0427 1470 80.0 0.0488 1680 90.0 0.0549 1890 100 0.0610 2100 200 0.122 4210 300 0.183 6310 400 0.244 8420 500 0.305 1.05 × 104 600 0.366 1.26 × 104 700 0.427 1.47 × 104 800 0.488 1.68 × 104 900 0.549 1.89 × 104 1000 0.610 2.10 × 104 2000 1.22 4.21 × 104 3000 1.83 6.31 × 104 4000 2.44 8.42 × 104 5000 3.05 1.05 × 105 6000 3.66 1.26 × 105 7000 4.27 1.47 × 105 8000 4.88 1.68 × 105 9000 5.49 1.89 × 105 1.00 × 104 6.10 2.10 × 105 1.41 × 104 8.61 2.97 × 105
 Steel I Beam: S12 × 35 (S12 inch tall × 35 lbf/ft) L = 30.0 ft (lbf/ft) (in) (psi) 35.0 0.0442 1060 40.0 0.0506 1210 50.0 0.0632 1520 60.0 0.0759 1820 70.0 0.0885 2120 80.0 0.101 2420 90.0 0.114 2730 100 0.126 3030 200 0.253 6060 300 0.379 9090 400 0.506 1.21 × 104 500 0.632 1.52 × 104 600 0.759 1.82 × 104 700 0.885 2.12 × 104 800 1.01 2.42 × 104 900 1.14 2.73 × 104 1000 1.26 3.03 × 104 2000 2.53 6.06 × 104 3000 3.79 9.09 × 104 4000 5.06 1.21 × 105 5000 6.32 1.52 × 105 6000 7.59 1.82 × 105 7000 8.85 2.12 × 105 8000 10.1 2.42 × 105 9000 11.4 2.73 × 105 9800 12.4 2.97 × 105
 Steel I Beam: S12 × 35 (S12 inch tall × 35 lbf/ft) L = 40.0 ft (lbf/ft) (in) (psi) 35.0 0.140 1890 40.0 0.160 2160 50.0 0.200 2690 60.0 0.240 3230 70.0 0.280 3770 80.0 0.320 4310 90.0 0.360 4850 100 0.400 5390 200 0.799 1.08 × 104 300 1.20 1.62 × 104 400 1.60 2.16 × 104 500 2.00 2.69 × 104 600 2.40 3.23 × 104 700 2.80 3.77 × 104 800 3.20 4.31 × 104 900 3.60 4.85 × 104 1000 4.00 5.39 × 104 2000 7.99 1.08 × 105 3000 12.0 1.62 × 105 3000 12.0 1.62 × 105
 Steel I Beam: S12 × 35 (S12 inch tall × 35 lbf/ft) L = 50.0 ft (lbf/ft) (in) (psi) 35.0 0.341 2950 40.0 0.390 3370 50.0 0.488 4210 60.0 0.585 5050 70.0 0.683 5890 80.0 0.780 6730 90.0 0.878 7580 100 0.976 8420 200 1.95 1.68 × 104 300 2.93 2.53 × 104 400 3.90 3.37 × 104 500 4.88 4.21 × 104 600 5.85 5.05 × 104 700 6.83 5.89 × 104 800 7.80 6.73 × 104 900 8.78 7.58 × 104 1000 9.76 8.42 × 104 1230 12.0 1.04 × 105
 Steel I Beam: S12 × 35 (S12 inch tall × 35 lbf/ft) L = 60.0 ft (lbf/ft) (in) (psi) 35.0 0.708 4240 40.0 0.809 4850 50.0 1.01 6060 60.0 1.21 7270 70.0 1.42 8490 80.0 1.62 9700 90.0 1.82 1.09 × 104 100 2.02 1.21 × 104 200 4.05 2.42 × 104 300 6.07 3.64 × 104 400 8.09 4.85 × 104 500 10.1 6.06 × 104 593 12.0 7.19 × 104
 Steel I Beam: S12 × 35 (S12 inch tall × 35 lbf/ft) L = 70.0 ft (lbf/ft) (in) (psi) 35.0 1.31 5770 40.0 1.50 6600 50.0 1.87 8250 60.0 2.25 9900 70.0 2.62 1.15 × 104 80.0 3.00 1.32 × 104 90.0 3.37 1.48 × 104 100 3.75 1.65 × 104 200 7.49 3.30 × 104 300 11.2 4.95 × 104 320 12.0 5.28 × 104
 Steel I Beam: S12 × 35 (S12 inch tall × 35 lbf/ft) L = 80.0 ft (lbf/ft) (in) (psi) 35.0 2.24 7540 40.0 2.56 8620 50.0 3.20 1.08 × 104 60.0 3.84 1.29 × 104 70.0 4.48 1.51 × 104 80.0 5.11 1.72 × 104 90.0 5.75 1.94 × 104 100 6.39 2.16 × 104 188 12.0 4.05 × 104
 Steel I Beam: S12 × 35 (S12 inch tall × 35 lbf/ft) L = 90.0 ft (lbf/ft) (in) (psi) 35.0 3.58 9550 40.0 4.10 1.09 × 104 50.0 5.12 1.36 × 104 60.0 6.14 1.64 × 104 70.0 7.17 1.91 × 104 80.0 8.19 2.18 × 104 90.0 9.22 2.45 × 104 100 10.2 2.73 × 104 117 12.0 3.20 × 104
 Steel I Beam: S12 × 35 (S12 inch tall × 35 lbf/ft) L = 100 ft (lbf/ft) (in) (psi) 35.0 5.46 1.18 × 104 40.0 6.24 1.35 × 104 50.0 7.80 1.68 × 104 60.0 9.36 2.02 × 104 70.0 10.9 2.36 × 104 76.9 12.0 2.59 × 104