S Section Steel I Beam: S15 × 42.9

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Glossary » Beams » Simply Supported » Uniformly Distributed Load » Three Equal Spans » S Section Steel I Beam » S15 × 42.9
S Section Steel I Beam | Single Span | Two Equal Spans | Three Equal Spans | Four Equal Spans

For a simply supported beam in three equal spans, we compute the displacement at the middle of the first and the third spans, and the maximum normal stress occuring at the second and third supports of the beam.
The tabulated data listed in this page are calculated based on the area moment of inertia (Ixx = 447 in4) for the S15 × 42.9 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: S15 × 42.9 (S15 inch tall × 42.9 lbf/ft) L = 3.00 ft (lbf/ft) (in) (psi) 42.9 3.00 × 10-6 7.77 50.0 3.50 × 10-6 9.06 60.0 4.19 × 10-6 10.9 70.0 4.89 × 10-6 12.7 80.0 5.59 × 10-6 14.5 90.0 6.29 × 10-6 16.3 100 6.99 × 10-6 18.1 200 1.40 × 10-5 36.2 300 2.10 × 10-5 54.4 400 2.80 × 10-5 72.5 500 3.50 × 10-5 90.6 600 4.19 × 10-5 109 700 4.89 × 10-5 127 800 5.59 × 10-5 145 900 6.29 × 10-5 163 1000 6.99 × 10-5 181 2000 1.40 × 10-4 362 3000 2.10 × 10-4 544 4000 2.80 × 10-4 725 5000 3.50 × 10-4 906 6000 4.19 × 10-4 1090 7000 4.89 × 10-4 1270 8000 5.59 × 10-4 1450 9000 6.29 × 10-4 1630 1.00 × 104 6.99 × 10-4 1810 2.00 × 104 0.00140 3620 3.00 × 104 0.00210 5440 4.00 × 104 0.00280 7250 5.00 × 104 0.00350 9060 6.00 × 104 0.00419 1.09 × 104 7.00 × 104 0.00489 1.27 × 104 8.00 × 104 0.00559 1.45 × 104 9.00 × 104 0.00629 1.63 × 104 1.00 × 105 0.00699 1.81 × 104 2.00 × 105 0.0140 3.62 × 104 3.00 × 105 0.0210 5.44 × 104 4.00 × 105 0.0280 7.25 × 104 5.00 × 105 0.0350 9.06 × 104 6.00 × 105 0.0419 1.09 × 105 7.00 × 105 0.0489 1.27 × 105 8.00 × 105 0.0559 1.45 × 105 9.00 × 105 0.0629 1.63 × 105 1.00 × 106 0.0699 1.81 × 105 1.64 × 106 0.115 2.97 × 105
 Steel I Beam: S15 × 42.9 (S15 inch tall × 42.9 lbf/ft) L = 5.00 ft (lbf/ft) (in) (psi) 42.9 2.31 × 10-5 21.6 50.0 2.70 × 10-5 25.2 60.0 3.24 × 10-5 30.2 70.0 3.78 × 10-5 35.2 80.0 4.32 × 10-5 40.3 90.0 4.85 × 10-5 45.3 100 5.39 × 10-5 50.3 200 1.08 × 10-4 101 300 1.62 × 10-4 151 400 2.16 × 10-4 201 500 2.70 × 10-4 252 600 3.24 × 10-4 302 700 3.78 × 10-4 352 800 4.32 × 10-4 403 900 4.85 × 10-4 453 1000 5.39 × 10-4 503 2000 0.00108 1010 3000 0.00162 1510 4000 0.00216 2010 5000 0.00270 2520 6000 0.00324 3020 7000 0.00378 3520 8000 0.00432 4030 9000 0.00485 4530 1.00 × 104 0.00539 5030 2.00 × 104 0.0108 1.01 × 104 3.00 × 104 0.0162 1.51 × 104 4.00 × 104 0.0216 2.01 × 104 5.00 × 104 0.0270 2.52 × 104 6.00 × 104 0.0324 3.02 × 104 7.00 × 104 0.0378 3.52 × 104 8.00 × 104 0.0432 4.03 × 104 9.00 × 104 0.0485 4.53 × 104 1.00 × 105 0.0539 5.03 × 104 2.00 × 105 0.108 1.01 × 105 3.00 × 105 0.162 1.51 × 105 4.00 × 105 0.216 2.01 × 105 5.00 × 105 0.270 2.52 × 105 5.90 × 105 0.318 2.97 × 105
 Steel I Beam: S15 × 42.9 (S15 inch tall × 42.9 lbf/ft) L = 10.0 ft (lbf/ft) (in) (psi) 42.9 3.70 × 10-4 86.4 50.0 4.32 × 10-4 101 60.0 5.18 × 10-4 121 70.0 6.04 × 10-4 141 80.0 6.90 × 10-4 161 90.0 7.77 × 10-4 181 100 8.63 × 10-4 201 200 0.00173 403 300 0.00259 604 400 0.00345 805 500 0.00432 1010 600 0.00518 1210 700 0.00604 1410 800 0.00690 1610 900 0.00777 1810 1000 0.00863 2010 2000 0.0173 4030 3000 0.0259 6040 4000 0.0345 8050 5000 0.0432 1.01 × 104 6000 0.0518 1.21 × 104 7000 0.0604 1.41 × 104 8000 0.0690 1.61 × 104 9000 0.0777 1.81 × 104 1.00 × 104 0.0863 2.01 × 104 2.00 × 104 0.173 4.03 × 104 3.00 × 104 0.259 6.04 × 104 4.00 × 104 0.345 8.05 × 104 5.00 × 104 0.432 1.01 × 105 6.00 × 104 0.518 1.21 × 105 7.00 × 104 0.604 1.41 × 105 8.00 × 104 0.690 1.61 × 105 9.00 × 104 0.777 1.81 × 105 1.00 × 105 0.863 2.01 × 105 1.48 × 105 1.27 2.97 × 105
 Steel I Beam: S15 × 42.9 (S15 inch tall × 42.9 lbf/ft) L = 15.0 ft (lbf/ft) (in) (psi) 42.9 0.00187 194 50.0 0.00218 227 60.0 0.00262 272 70.0 0.00306 317 80.0 0.00350 362 90.0 0.00393 408 100 0.00437 453 200 0.00874 906 300 0.0131 1360 400 0.0175 1810 500 0.0218 2270 600 0.0262 2720 700 0.0306 3170 800 0.0350 3620 900 0.0393 4080 1000 0.0437 4530 2000 0.0874 9060 3000 0.131 1.36 × 104 4000 0.175 1.81 × 104 5000 0.218 2.27 × 104 6000 0.262 2.72 × 104 7000 0.306 3.17 × 104 8000 0.350 3.62 × 104 9000 0.393 4.08 × 104 1.00 × 104 0.437 4.53 × 104 2.00 × 104 0.874 9.06 × 104 3.00 × 104 1.31 1.36 × 105 4.00 × 104 1.75 1.81 × 105 5.00 × 104 2.18 2.27 × 105 6.00 × 104 2.62 2.72 × 105 6.56 × 104 2.86 2.97 × 105
 Steel I Beam: S15 × 42.9 (S15 inch tall × 42.9 lbf/ft) L = 20.0 ft (lbf/ft) (in) (psi) 42.9 0.00592 346 50.0 0.00690 403 60.0 0.00829 483 70.0 0.00967 564 80.0 0.0110 644 90.0 0.0124 725 100 0.0138 805 200 0.0276 1610 300 0.0414 2420 400 0.0552 3220 500 0.0690 4030 600 0.0829 4830 700 0.0967 5640 800 0.110 6440 900 0.124 7250 1000 0.138 8050 2000 0.276 1.61 × 104 3000 0.414 2.42 × 104 4000 0.552 3.22 × 104 5000 0.690 4.03 × 104 6000 0.829 4.83 × 104 7000 0.967 5.64 × 104 8000 1.10 6.44 × 104 9000 1.24 7.25 × 104 1.00 × 104 1.38 8.05 × 104 2.00 × 104 2.76 1.61 × 105 3.00 × 104 4.14 2.42 × 105 3.69 × 104 5.09 2.97 × 105
 Steel I Beam: S15 × 42.9 (S15 inch tall × 42.9 lbf/ft) L = 25.0 ft (lbf/ft) (in) (psi) 42.9 0.0145 540 50.0 0.0169 629 60.0 0.0202 755 70.0 0.0236 881 80.0 0.0270 1010 90.0 0.0303 1130 100 0.0337 1260 200 0.0674 2520 300 0.101 3780 400 0.135 5030 500 0.169 6290 600 0.202 7550 700 0.236 8810 800 0.270 1.01 × 104 900 0.303 1.13 × 104 1000 0.337 1.26 × 104 2000 0.674 2.52 × 104 3000 1.01 3.78 × 104 4000 1.35 5.03 × 104 5000 1.69 6.29 × 104 6000 2.02 7.55 × 104 7000 2.36 8.81 × 104 8000 2.70 1.01 × 105 9000 3.03 1.13 × 105 1.00 × 104 3.37 1.26 × 105 2.00 × 104 6.74 2.52 × 105 2.36 × 104 7.96 2.97 × 105
 Steel I Beam: S15 × 42.9 (S15 inch tall × 42.9 lbf/ft) L = 30.0 ft (lbf/ft) (in) (psi) 42.9 0.0300 777 50.0 0.0350 906 60.0 0.0419 1090 70.0 0.0489 1270 80.0 0.0559 1450 90.0 0.0629 1630 100 0.0699 1810 200 0.140 3620 300 0.210 5440 400 0.280 7250 500 0.350 9060 600 0.419 1.09 × 104 700 0.489 1.27 × 104 800 0.559 1.45 × 104 900 0.629 1.63 × 104 1000 0.699 1.81 × 104 2000 1.40 3.62 × 104 3000 2.10 5.44 × 104 4000 2.80 7.25 × 104 5000 3.50 9.06 × 104 6000 4.19 1.09 × 105 7000 4.89 1.27 × 105 8000 5.59 1.45 × 105 9000 6.29 1.63 × 105 1.00 × 104 6.99 1.81 × 105 1.64 × 104 11.5 2.97 × 105
 Steel I Beam: S15 × 42.9 (S15 inch tall × 42.9 lbf/ft) L = 40.0 ft (lbf/ft) (in) (psi) 42.9 0.0948 1380 50.0 0.110 1610 60.0 0.133 1930 70.0 0.155 2260 80.0 0.177 2580 90.0 0.199 2900 100 0.221 3220 200 0.442 6440 300 0.663 9660 400 0.884 1.29 × 104 500 1.10 1.61 × 104 600 1.33 1.93 × 104 700 1.55 2.26 × 104 800 1.77 2.58 × 104 900 1.99 2.90 × 104 1000 2.21 3.22 × 104 2000 4.42 6.44 × 104 3000 6.63 9.66 × 104 4000 8.84 1.29 × 105 5000 11.0 1.61 × 105 6000 13.3 1.93 × 105 6790 15.0 2.19 × 105
 Steel I Beam: S15 × 42.9 (S15 inch tall × 42.9 lbf/ft) L = 50.0 ft (lbf/ft) (in) (psi) 42.9 0.231 2160 50.0 0.270 2520 60.0 0.324 3020 70.0 0.378 3520 80.0 0.432 4030 90.0 0.485 4530 100 0.539 5030 200 1.08 1.01 × 104 300 1.62 1.51 × 104 400 2.16 2.01 × 104 500 2.70 2.52 × 104 600 3.24 3.02 × 104 700 3.78 3.52 × 104 800 4.32 4.03 × 104 900 4.85 4.53 × 104 1000 5.39 5.03 × 104 2000 10.8 1.01 × 105 2780 15.0 1.40 × 105
 Steel I Beam: S15 × 42.9 (S15 inch tall × 42.9 lbf/ft) L = 60.0 ft (lbf/ft) (in) (psi) 42.9 0.480 3110 50.0 0.559 3620 60.0 0.671 4350 70.0 0.783 5070 80.0 0.895 5800 90.0 1.01 6520 100 1.12 7250 200 2.24 1.45 × 104 300 3.36 2.17 × 104 400 4.47 2.90 × 104 500 5.59 3.62 × 104 600 6.71 4.35 × 104 700 7.83 5.07 × 104 800 8.95 5.80 × 104 900 10.1 6.52 × 104 1000 11.2 7.25 × 104 1340 15.0 9.72 × 104
 Steel I Beam: S15 × 42.9 (S15 inch tall × 42.9 lbf/ft) L = 70.0 ft (lbf/ft) (in) (psi) 42.9 0.889 4230 50.0 1.04 4930 60.0 1.24 5920 70.0 1.45 6910 80.0 1.66 7890 90.0 1.86 8880 100 2.07 9870 200 4.14 1.97 × 104 300 6.22 2.96 × 104 400 8.29 3.95 × 104 500 10.4 4.93 × 104 600 12.4 5.92 × 104 700 14.5 6.91 × 104 724 15.0 7.14 × 104
 Steel I Beam: S15 × 42.9 (S15 inch tall × 42.9 lbf/ft) L = 80.0 ft (lbf/ft) (in) (psi) 42.9 1.52 5530 50.0 1.77 6440 60.0 2.12 7730 70.0 2.47 9020 80.0 2.83 1.03 × 104 90.0 3.18 1.16 × 104 100 3.54 1.29 × 104 200 7.07 2.58 × 104 300 10.6 3.87 × 104 400 14.1 5.15 × 104 424 15.0 5.47 × 104
 Steel I Beam: S15 × 42.9 (S15 inch tall × 42.9 lbf/ft) L = 90.0 ft (lbf/ft) (in) (psi) 42.9 2.43 7000 50.0 2.83 8150 60.0 3.40 9790 70.0 3.96 1.14 × 104 80.0 4.53 1.30 × 104 90.0 5.10 1.47 × 104 100 5.66 1.63 × 104 200 11.3 3.26 × 104 265 15.0 4.32 × 104
 Steel I Beam: S15 × 42.9 (S15 inch tall × 42.9 lbf/ft) L = 100 ft (lbf/ft) (in) (psi) 42.9 3.70 8640 50.0 4.32 1.01 × 104 60.0 5.18 1.21 × 104 70.0 6.04 1.41 × 104 80.0 6.90 1.61 × 104 90.0 7.77 1.81 × 104 100 8.63 2.01 × 104 174 15.0 3.50 × 104
 Steel I Beam: S15 × 42.9 (S15 inch tall × 42.9 lbf/ft) L = 125 ft (lbf/ft) (in) (psi) 42.9 9.04 1.35 × 104 50.0 10.5 1.57 × 104 60.0 12.6 1.89 × 104 70.0 14.7 2.20 × 104 71.2 15.0 2.24 × 104