S Section Steel I Beam: S12 × 40.8

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Glossary » Beams » Simply Supported » Uniformly Distributed Load » Single Span » S Section Steel I Beam » S12 × 40.8

For a simply supported beam in a single span, the maximum displacement and the maximum normal stress occur at the center of the beam.
The tabulated data listed in this page are calculated based on the area moment of inertia (Ixx = 272 in4) for the S12 × 40.8 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 × 40.8 (S Section 12 inch tall × 40.8 lbf/ft) L = 3.00 ft (lbf/ft) (in) (psi) 40.8 8.98 × 10-6 12.1 50.0 1.10 × 10-5 14.9 60.0 1.32 × 10-5 17.9 70.0 1.54 × 10-5 20.8 80.0 1.76 × 10-5 23.8 90.0 1.98 × 10-5 26.8 100 2.20 × 10-5 29.8 200 4.40 × 10-5 59.6 300 6.60 × 10-5 89.3 400 8.80 × 10-5 119 500 1.10 × 10-4 149 600 1.32 × 10-4 179 700 1.54 × 10-4 208 800 1.76 × 10-4 238 900 1.98 × 10-4 268 1000 2.20 × 10-4 298 2000 4.40 × 10-4 596 3000 6.60 × 10-4 893 4000 8.80 × 10-4 1190 5000 0.00110 1490 6000 0.00132 1790 7000 0.00154 2080 8000 0.00176 2380 9000 0.00198 2680 1.00 × 104 0.00220 2980 2.00 × 104 0.00440 5960 3.00 × 104 0.00660 8930 4.00 × 104 0.00880 1.19 × 104 5.00 × 104 0.0110 1.49 × 104 6.00 × 104 0.0132 1.79 × 104 7.00 × 104 0.0154 2.08 × 104 8.00 × 104 0.0176 2.38 × 104 9.00 × 104 0.0198 2.68 × 104 1.00 × 105 0.0220 2.98 × 104 2.00 × 105 0.0440 5.96 × 104 3.00 × 105 0.0660 8.93 × 104 4.00 × 105 0.0880 1.19 × 105 5.00 × 105 0.110 1.49 × 105 6.00 × 105 0.132 1.79 × 105 7.00 × 105 0.154 2.08 × 105 8.00 × 105 0.176 2.38 × 105 9.00 × 105 0.198 2.68 × 105 9.97 × 105 0.219 2.97 × 105
 Steel I Beam: S12 × 40.8 (S Section 12 inch tall × 40.8 lbf/ft) L = 5.00 ft (lbf/ft) (in) (psi) 40.8 6.93 × 10-5 33.8 50.0 8.49 × 10-5 41.4 60.0 1.02 × 10-4 49.6 70.0 1.19 × 10-4 57.9 80.0 1.36 × 10-4 66.2 90.0 1.53 × 10-4 74.4 100 1.70 × 10-4 82.7 200 3.39 × 10-4 165 300 5.09 × 10-4 248 400 6.79 × 10-4 331 500 8.49 × 10-4 414 600 0.00102 496 700 0.00119 579 800 0.00136 662 900 0.00153 744 1000 0.00170 827 2000 0.00339 1650 3000 0.00509 2480 4000 0.00679 3310 5000 0.00849 4140 6000 0.0102 4960 7000 0.0119 5790 8000 0.0136 6620 9000 0.0153 7440 1.00 × 104 0.0170 8270 2.00 × 104 0.0339 1.65 × 104 3.00 × 104 0.0509 2.48 × 104 4.00 × 104 0.0679 3.31 × 104 5.00 × 104 0.0849 4.14 × 104 6.00 × 104 0.102 4.96 × 104 7.00 × 104 0.119 5.79 × 104 8.00 × 104 0.136 6.62 × 104 9.00 × 104 0.153 7.44 × 104 1.00 × 105 0.170 8.27 × 104 2.00 × 105 0.339 1.65 × 105 3.00 × 105 0.509 2.48 × 105 3.59 × 105 0.610 2.97 × 105
 Steel I Beam: S12 × 40.8 (S Section 12 inch tall × 40.8 lbf/ft) L = 10.0 ft (lbf/ft) (in) (psi) 40.8 0.00111 135 50.0 0.00136 165 60.0 0.00163 199 70.0 0.00190 232 80.0 0.00217 265 90.0 0.00244 298 100 0.00272 331 200 0.00543 662 300 0.00815 993 400 0.0109 1320 500 0.0136 1650 600 0.0163 1990 700 0.0190 2320 800 0.0217 2650 900 0.0244 2980 1000 0.0272 3310 2000 0.0543 6620 3000 0.0815 9930 4000 0.109 1.32 × 104 5000 0.136 1.65 × 104 6000 0.163 1.99 × 104 7000 0.190 2.32 × 104 8000 0.217 2.65 × 104 9000 0.244 2.98 × 104 1.00 × 104 0.272 3.31 × 104 2.00 × 104 0.543 6.62 × 104 3.00 × 104 0.815 9.93 × 104 4.00 × 104 1.09 1.32 × 105 5.00 × 104 1.36 1.65 × 105 6.00 × 104 1.63 1.99 × 105 7.00 × 104 1.90 2.32 × 105 8.00 × 104 2.17 2.65 × 105 8.98 × 104 2.44 2.97 × 105
 Steel I Beam: S12 × 40.8 (S Section 12 inch tall × 40.8 lbf/ft) L = 15.0 ft (lbf/ft) (in) (psi) 40.8 0.00561 304 50.0 0.00687 372 60.0 0.00825 447 70.0 0.00962 521 80.0 0.0110 596 90.0 0.0124 670 100 0.0137 744 200 0.0275 1490 300 0.0412 2230 400 0.0550 2980 500 0.0687 3720 600 0.0825 4470 700 0.0962 5210 800 0.110 5960 900 0.124 6700 1000 0.137 7440 2000 0.275 1.49 × 104 3000 0.412 2.23 × 104 4000 0.550 2.98 × 104 5000 0.687 3.72 × 104 6000 0.825 4.47 × 104 7000 0.962 5.21 × 104 8000 1.10 5.96 × 104 9000 1.24 6.70 × 104 1.00 × 104 1.37 7.44 × 104 2.00 × 104 2.75 1.49 × 105 3.00 × 104 4.12 2.23 × 105 3.99 × 104 5.49 2.97 × 105
 Steel I Beam: S12 × 40.8 (S Section 12 inch tall × 40.8 lbf/ft) L = 20.0 ft (lbf/ft) (in) (psi) 40.8 0.0177 540 50.0 0.0217 662 60.0 0.0261 794 70.0 0.0304 926 80.0 0.0348 1060 90.0 0.0391 1190 100 0.0435 1320 200 0.0869 2650 300 0.130 3970 400 0.174 5290 500 0.217 6620 600 0.261 7940 700 0.304 9260 800 0.348 1.06 × 104 900 0.391 1.19 × 104 1000 0.435 1.32 × 104 2000 0.869 2.65 × 104 3000 1.30 3.97 × 104 4000 1.74 5.29 × 104 5000 2.17 6.62 × 104 6000 2.61 7.94 × 104 7000 3.04 9.26 × 104 8000 3.48 1.06 × 105 9000 3.91 1.19 × 105 1.00 × 104 4.35 1.32 × 105 2.00 × 104 8.69 2.65 × 105 2.24 × 104 9.75 2.97 × 105
 Steel I Beam: S12 × 40.8 (S Section 12 inch tall × 40.8 lbf/ft) L = 25.0 ft (lbf/ft) (in) (psi) 40.8 0.0433 844 50.0 0.0530 1030 60.0 0.0637 1240 70.0 0.0743 1450 80.0 0.0849 1650 90.0 0.0955 1860 100 0.106 2070 200 0.212 4140 300 0.318 6200 400 0.424 8270 500 0.530 1.03 × 104 600 0.637 1.24 × 104 700 0.743 1.45 × 104 800 0.849 1.65 × 104 900 0.955 1.86 × 104 1000 1.06 2.07 × 104 2000 2.12 4.14 × 104 3000 3.18 6.20 × 104 4000 4.24 8.27 × 104 5000 5.30 1.03 × 105 6000 6.37 1.24 × 105 7000 7.43 1.45 × 105 8000 8.49 1.65 × 105 9000 9.55 1.86 × 105 1.00 × 104 10.6 2.07 × 105 1.44 × 104 15.2 2.97 × 105
 Steel I Beam: S12 × 40.8 (S Section 12 inch tall × 40.8 lbf/ft) L = 30.0 ft (lbf/ft) (in) (psi) 40.8 0.0898 1220 50.0 0.110 1490 60.0 0.132 1790 70.0 0.154 2080 80.0 0.176 2380 90.0 0.198 2680 100 0.220 2980 200 0.440 5960 300 0.660 8930 400 0.880 1.19 × 104 500 1.10 1.49 × 104 600 1.32 1.79 × 104 700 1.54 2.08 × 104 800 1.76 2.38 × 104 900 1.98 2.68 × 104 1000 2.20 2.98 × 104 2000 4.40 5.96 × 104 3000 6.60 8.93 × 104 4000 8.80 1.19 × 105 5000 11.0 1.49 × 105 5450 12.0 1.62 × 105
 Steel I Beam: S12 × 40.8 (S Section 12 inch tall × 40.8 lbf/ft) L = 40.0 ft (lbf/ft) (in) (psi) 40.8 0.284 2160 50.0 0.348 2650 60.0 0.417 3180 70.0 0.487 3710 80.0 0.556 4240 90.0 0.626 4760 100 0.695 5290 200 1.39 1.06 × 104 300 2.09 1.59 × 104 400 2.78 2.12 × 104 500 3.48 2.65 × 104 600 4.17 3.18 × 104 700 4.87 3.71 × 104 800 5.56 4.24 × 104 900 6.26 4.76 × 104 1000 6.95 5.29 × 104 1730 12.0 9.14 × 104
 Steel I Beam: S12 × 40.8 (S Section 12 inch tall × 40.8 lbf/ft) L = 50.0 ft (lbf/ft) (in) (psi) 40.8 0.693 3380 50.0 0.849 4140 60.0 1.02 4960 70.0 1.19 5790 80.0 1.36 6620 90.0 1.53 7440 100 1.70 8270 200 3.39 1.65 × 104 300 5.09 2.48 × 104 400 6.79 3.31 × 104 500 8.49 4.14 × 104 600 10.2 4.96 × 104 700 11.9 5.79 × 104 707 12.0 5.85 × 104
 Steel I Beam: S12 × 40.8 (S Section 12 inch tall × 40.8 lbf/ft) L = 60.0 ft (lbf/ft) (in) (psi) 40.8 1.44 4860 50.0 1.76 5960 60.0 2.11 7150 70.0 2.46 8340 80.0 2.82 9530 90.0 3.17 1.07 × 104 100 3.52 1.19 × 104 200 7.04 2.38 × 104 300 10.6 3.57 × 104 341 12.0 4.06 × 104
 Steel I Beam: S12 × 40.8 (S Section 12 inch tall × 40.8 lbf/ft) L = 70.0 ft (lbf/ft) (in) (psi) 40.8 2.66 6620 50.0 3.26 8110 60.0 3.91 9730 70.0 4.56 1.13 × 104 80.0 5.22 1.30 × 104 90.0 5.87 1.46 × 104 100 6.52 1.62 × 104 184 12.0 2.98 × 104
 Steel I Beam: S12 × 40.8 (S Section 12 inch tall × 40.8 lbf/ft) L = 80.0 ft (lbf/ft) (in) (psi) 40.8 4.54 8640 50.0 5.56 1.06 × 104 60.0 6.67 1.27 × 104 70.0 7.79 1.48 × 104 80.0 8.90 1.69 × 104 90.0 10.0 1.91 × 104 100 11.1 2.12 × 104 108 12.0 2.28 × 104
 Steel I Beam: S12 × 40.8 (S Section 12 inch tall × 40.8 lbf/ft) L = 90.0 ft (lbf/ft) (in) (psi) 40.8 7.27 1.09 × 104 50.0 8.91 1.34 × 104 60.0 10.7 1.61 × 104 67.3 12.0 1.80 × 104
 Steel I Beam: S12 × 40.8 (S Section 12 inch tall × 40.8 lbf/ft) L = 100 ft (lbf/ft) (in) (psi) 40.8 11.1 1.35 × 104 44.2 12.0 1.46 × 104