Wide Flange Steel I Beam: W8 × 15

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Glossary » Beams » Simply Supported » Uniformly Distributed Load » Two Equal Spans » Wide Flange Steel I Beam » W8 × 15
Wide Flange 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 = 48.0 in4) for the W8 × 15 Wide Flange 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: W8 × 15 (Wide Flange 8 inch tall × 15 lbf/ft) L = 3.00 ft (lbf/ft) (in) (psi) 15.0 7.48 × 10-6 17.1 20.0 9.97 × 10-6 22.8 30.0 1.50 × 10-5 34.2 40.0 1.99 × 10-5 45.6 50.0 2.49 × 10-5 57.0 60.0 2.99 × 10-5 68.4 70.0 3.49 × 10-5 79.8 80.0 3.99 × 10-5 91.2 90.0 4.49 × 10-5 103 100 4.99 × 10-5 114 200 9.97 × 10-5 228 300 1.50 × 10-4 342 400 1.99 × 10-4 456 500 2.49 × 10-4 570 600 2.99 × 10-4 684 700 3.49 × 10-4 798 800 3.99 × 10-4 912 900 4.49 × 10-4 1030 1000 4.99 × 10-4 1140 2000 9.97 × 10-4 2280 3000 0.00150 3420 4000 0.00199 4560 5000 0.00249 5700 6000 0.00299 6840 7000 0.00349 7980 8000 0.00399 9120 9000 0.00449 1.03 × 104 1.00 × 104 0.00499 1.14 × 104 2.00 × 104 0.00997 2.28 × 104 3.00 × 104 0.0150 3.42 × 104 4.00 × 104 0.0199 4.56 × 104 5.00 × 104 0.0249 5.70 × 104 6.00 × 104 0.0299 6.84 × 104 7.00 × 104 0.0349 7.98 × 104 8.00 × 104 0.0399 9.12 × 104 9.00 × 104 0.0449 1.03 × 105 1.00 × 105 0.0499 1.14 × 105 2.00 × 105 0.0997 2.28 × 105 2.60 × 105 0.130 2.97 × 105
 Steel I Beam: W8 × 15 (Wide Flange 8 inch tall × 15 lbf/ft) L = 5.00 ft (lbf/ft) (in) (psi) 15.0 5.77 × 10-5 47.5 20.0 7.70 × 10-5 63.4 30.0 1.15 × 10-4 95.0 40.0 1.54 × 10-4 127 50.0 1.92 × 10-4 158 60.0 2.31 × 10-4 190 70.0 2.69 × 10-4 222 80.0 3.08 × 10-4 253 90.0 3.46 × 10-4 285 100 3.85 × 10-4 317 200 7.70 × 10-4 634 300 0.00115 950 400 0.00154 1270 500 0.00192 1580 600 0.00231 1900 700 0.00269 2220 800 0.00308 2530 900 0.00346 2850 1000 0.00385 3170 2000 0.00770 6340 3000 0.0115 9500 4000 0.0154 1.27 × 104 5000 0.0192 1.58 × 104 6000 0.0231 1.90 × 104 7000 0.0269 2.22 × 104 8000 0.0308 2.53 × 104 9000 0.0346 2.85 × 104 1.00 × 104 0.0385 3.17 × 104 2.00 × 104 0.0770 6.34 × 104 3.00 × 104 0.115 9.50 × 104 4.00 × 104 0.154 1.27 × 105 5.00 × 104 0.192 1.58 × 105 6.00 × 104 0.231 1.90 × 105 7.00 × 104 0.269 2.22 × 105 8.00 × 104 0.308 2.53 × 105 9.00 × 104 0.346 2.85 × 105 9.38 × 104 0.361 2.97 × 105
 Steel I Beam: W8 × 15 (Wide Flange 8 inch tall × 15 lbf/ft) L = 10.0 ft (lbf/ft) (in) (psi) 15.0 9.23 × 10-4 190 20.0 0.00123 253 30.0 0.00185 380 40.0 0.00246 507 50.0 0.00308 634 60.0 0.00369 760 70.0 0.00431 887 80.0 0.00492 1010 90.0 0.00554 1140 100 0.00616 1270 200 0.0123 2530 300 0.0185 3800 400 0.0246 5070 500 0.0308 6340 600 0.0369 7600 700 0.0431 8870 800 0.0492 1.01 × 104 900 0.0554 1.14 × 104 1000 0.0616 1.27 × 104 2000 0.123 2.53 × 104 3000 0.185 3.80 × 104 4000 0.246 5.07 × 104 5000 0.308 6.34 × 104 6000 0.369 7.60 × 104 7000 0.431 8.87 × 104 8000 0.492 1.01 × 105 9000 0.554 1.14 × 105 1.00 × 104 0.616 1.27 × 105 2.00 × 104 1.23 2.53 × 105 2.34 × 104 1.44 2.97 × 105
 Steel I Beam: W8 × 15 (Wide Flange 8 inch tall × 15 lbf/ft) L = 15.0 ft (lbf/ft) (in) (psi) 15.0 0.00467 428 20.0 0.00623 570 30.0 0.00935 855 40.0 0.0125 1140 50.0 0.0156 1430 60.0 0.0187 1710 70.0 0.0218 2000 80.0 0.0249 2280 90.0 0.0280 2570 100 0.0312 2850 200 0.0623 5700 300 0.0935 8550 400 0.125 1.14 × 104 500 0.156 1.43 × 104 600 0.187 1.71 × 104 700 0.218 2.00 × 104 800 0.249 2.28 × 104 900 0.280 2.57 × 104 1000 0.312 2.85 × 104 2000 0.623 5.70 × 104 3000 0.935 8.55 × 104 4000 1.25 1.14 × 105 5000 1.56 1.43 × 105 6000 1.87 1.71 × 105 7000 2.18 2.00 × 105 8000 2.49 2.28 × 105 9000 2.80 2.57 × 105 1.00 × 104 3.12 2.85 × 105 1.04 × 104 3.25 2.97 × 105
 Steel I Beam: W8 × 15 (Wide Flange 8 inch tall × 15 lbf/ft) L = 20.0 ft (lbf/ft) (in) (psi) 15.0 0.0148 760 20.0 0.0197 1010 30.0 0.0295 1520 40.0 0.0394 2030 50.0 0.0492 2530 60.0 0.0591 3040 70.0 0.0689 3550 80.0 0.0788 4060 90.0 0.0886 4560 100 0.0985 5070 200 0.197 1.01 × 104 300 0.295 1.52 × 104 400 0.394 2.03 × 104 500 0.492 2.53 × 104 600 0.591 3.04 × 104 700 0.689 3.55 × 104 800 0.788 4.06 × 104 900 0.886 4.56 × 104 1000 0.985 5.07 × 104 2000 1.97 1.01 × 105 3000 2.95 1.52 × 105 4000 3.94 2.03 × 105 5000 4.92 2.53 × 105 5860 5.77 2.97 × 105
 Steel I Beam: W8 × 15 (Wide Flange 8 inch tall × 15 lbf/ft) L = 25.0 ft (lbf/ft) (in) (psi) 15.0 0.0361 1190 20.0 0.0481 1580 30.0 0.0721 2380 40.0 0.0962 3170 50.0 0.120 3960 60.0 0.144 4750 70.0 0.168 5540 80.0 0.192 6340 90.0 0.216 7130 100 0.240 7920 200 0.481 1.58 × 104 300 0.721 2.38 × 104 400 0.962 3.17 × 104 500 1.20 3.96 × 104 600 1.44 4.75 × 104 700 1.68 5.54 × 104 800 1.92 6.34 × 104 900 2.16 7.13 × 104 1000 2.40 7.92 × 104 2000 4.81 1.58 × 105 3000 7.21 2.38 × 105 3750 9.02 2.97 × 105
 Steel I Beam: W8 × 15 (Wide Flange 8 inch tall × 15 lbf/ft) L = 30.0 ft (lbf/ft) (in) (psi) 15.0 0.0748 1710 20.0 0.0997 2280 30.0 0.150 3420 40.0 0.199 4560 50.0 0.249 5700 60.0 0.299 6840 70.0 0.349 7980 80.0 0.399 9120 90.0 0.449 1.03 × 104 100 0.499 1.14 × 104 200 0.997 2.28 × 104 300 1.50 3.42 × 104 400 1.99 4.56 × 104 500 2.49 5.70 × 104 600 2.99 6.84 × 104 700 3.49 7.98 × 104 800 3.99 9.12 × 104 900 4.49 1.03 × 105 1000 4.99 1.14 × 105 1630 8.11 1.85 × 105
 Steel I Beam: W8 × 15 (Wide Flange 8 inch tall × 15 lbf/ft) L = 40.0 ft (lbf/ft) (in) (psi) 15.0 0.236 3040 20.0 0.315 4060 30.0 0.473 6080 40.0 0.630 8110 50.0 0.788 1.01 × 104 60.0 0.946 1.22 × 104 70.0 1.10 1.42 × 104 80.0 1.26 1.62 × 104 90.0 1.42 1.82 × 104 100 1.58 2.03 × 104 200 3.15 4.06 × 104 300 4.73 6.08 × 104 400 6.30 8.11 × 104 500 7.88 1.01 × 105 515 8.11 1.04 × 105
 Steel I Beam: W8 × 15 (Wide Flange 8 inch tall × 15 lbf/ft) L = 50.0 ft (lbf/ft) (in) (psi) 15.0 0.577 4750 20.0 0.770 6340 30.0 1.15 9500 40.0 1.54 1.27 × 104 50.0 1.92 1.58 × 104 60.0 2.31 1.90 × 104 70.0 2.69 2.22 × 104 80.0 3.08 2.53 × 104 90.0 3.46 2.85 × 104 100 3.85 3.17 × 104 200 7.70 6.34 × 104 211 8.11 6.68 × 104
 Steel I Beam: W8 × 15 (Wide Flange 8 inch tall × 15 lbf/ft) L = 60.0 ft (lbf/ft) (in) (psi) 15.0 1.20 6840 20.0 1.60 9120 30.0 2.39 1.37 × 104 40.0 3.19 1.82 × 104 50.0 3.99 2.28 × 104 60.0 4.79 2.74 × 104 70.0 5.58 3.19 × 104 80.0 6.38 3.65 × 104 90.0 7.18 4.11 × 104 100 7.98 4.56 × 104 102 8.11 4.64 × 104
 Steel I Beam: W8 × 15 (Wide Flange 8 inch tall × 15 lbf/ft) L = 70.0 ft (lbf/ft) (in) (psi) 15.0 2.22 9310 20.0 2.96 1.24 × 104 30.0 4.43 1.86 × 104 40.0 5.91 2.48 × 104 50.0 7.39 3.10 × 104 54.9 8.11 3.41 × 104
 Steel I Beam: W8 × 15 (Wide Flange 8 inch tall × 15 lbf/ft) L = 80.0 ft (lbf/ft) (in) (psi) 15.0 3.78 1.22 × 104 20.0 5.04 1.62 × 104 30.0 7.56 2.43 × 104 32.2 8.11 2.61 × 104
 Steel I Beam: W8 × 15 (Wide Flange 8 inch tall × 15 lbf/ft) L = 90.0 ft (lbf/ft) (in) (psi) 15.0 6.06 1.54 × 104 20.0 8.08 2.05 × 104 20.1 8.11 2.06 × 104