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Glossary » Beams » Simply Supported » Uniformly Distributed Load » Three Equal Spans » Wide Flange Steel I Beam » W8 × 10
Wide Flange 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 = 30.8 in4) for the W8 × 10 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 × 10 (Wide Flange 8 inch tall × 10 lbf/ft) L = 3.00 ft (lbf/ft) (in) (psi) 10.0 1.01 × 10-5 13.8 20.0 2.03 × 10-5 27.7 30.0 3.04 × 10-5 41.5 40.0 4.06 × 10-5 55.3 50.0 5.07 × 10-5 69.2 60.0 6.09 × 10-5 83.0 70.0 7.10 × 10-5 96.8 80.0 8.12 × 10-5 111 90.0 9.13 × 10-5 124 100 1.01 × 10-4 138 200 2.03 × 10-4 277 300 3.04 × 10-4 415 400 4.06 × 10-4 553 500 5.07 × 10-4 692 600 6.09 × 10-4 830 700 7.10 × 10-4 968 800 8.12 × 10-4 1110 900 9.13 × 10-4 1240 1000 0.00101 1380 2000 0.00203 2770 3000 0.00304 4150 4000 0.00406 5530 5000 0.00507 6920 6000 0.00609 8300 7000 0.00710 9680 8000 0.00812 1.11 × 104 9000 0.00913 1.24 × 104 1.00 × 104 0.0101 1.38 × 104 2.00 × 104 0.0203 2.77 × 104 3.00 × 104 0.0304 4.15 × 104 4.00 × 104 0.0406 5.53 × 104 5.00 × 104 0.0507 6.92 × 104 6.00 × 104 0.0609 8.30 × 104 7.00 × 104 0.0710 9.68 × 104 8.00 × 104 0.0812 1.11 × 105 9.00 × 104 0.0913 1.24 × 105 1.00 × 105 0.101 1.38 × 105 2.00 × 105 0.203 2.77 × 105 2.15 × 105 0.218 2.97 × 105
 Steel I Beam: W8 × 10 (Wide Flange 8 inch tall × 10 lbf/ft) L = 5.00 ft (lbf/ft) (in) (psi) 10.0 7.83 × 10-5 38.4 20.0 1.57 × 10-4 76.9 30.0 2.35 × 10-4 115 40.0 3.13 × 10-4 154 50.0 3.91 × 10-4 192 60.0 4.70 × 10-4 231 70.0 5.48 × 10-4 269 80.0 6.26 × 10-4 307 90.0 7.05 × 10-4 346 100 7.83 × 10-4 384 200 0.00157 769 300 0.00235 1150 400 0.00313 1540 500 0.00391 1920 600 0.00470 2310 700 0.00548 2690 800 0.00626 3070 900 0.00705 3460 1000 0.00783 3840 2000 0.0157 7690 3000 0.0235 1.15 × 104 4000 0.0313 1.54 × 104 5000 0.0391 1.92 × 104 6000 0.0470 2.31 × 104 7000 0.0548 2.69 × 104 8000 0.0626 3.07 × 104 9000 0.0705 3.46 × 104 1.00 × 104 0.0783 3.84 × 104 2.00 × 104 0.157 7.69 × 104 3.00 × 104 0.235 1.15 × 105 4.00 × 104 0.313 1.54 × 105 5.00 × 104 0.391 1.92 × 105 6.00 × 104 0.470 2.31 × 105 7.00 × 104 0.548 2.69 × 105 7.73 × 104 0.605 2.97 × 105
 Steel I Beam: W8 × 10 (Wide Flange 8 inch tall × 10 lbf/ft) L = 10.0 ft (lbf/ft) (in) (psi) 10.0 0.00125 154 20.0 0.00251 307 30.0 0.00376 461 40.0 0.00501 615 50.0 0.00626 769 60.0 0.00752 922 70.0 0.00877 1080 80.0 0.0100 1230 90.0 0.0113 1380 100 0.0125 1540 200 0.0251 3070 300 0.0376 4610 400 0.0501 6150 500 0.0626 7690 600 0.0752 9220 700 0.0877 1.08 × 104 800 0.100 1.23 × 104 900 0.113 1.38 × 104 1000 0.125 1.54 × 104 2000 0.251 3.07 × 104 3000 0.376 4.61 × 104 4000 0.501 6.15 × 104 5000 0.626 7.69 × 104 6000 0.752 9.22 × 104 7000 0.877 1.08 × 105 8000 1.00 1.23 × 105 9000 1.13 1.38 × 105 1.00 × 104 1.25 1.54 × 105 1.93 × 104 2.42 2.97 × 105
 Steel I Beam: W8 × 10 (Wide Flange 8 inch tall × 10 lbf/ft) L = 15.0 ft (lbf/ft) (in) (psi) 10.0 0.00634 346 20.0 0.0127 692 30.0 0.0190 1040 40.0 0.0254 1380 50.0 0.0317 1730 60.0 0.0380 2070 70.0 0.0444 2420 80.0 0.0507 2770 90.0 0.0571 3110 100 0.0634 3460 200 0.127 6920 300 0.190 1.04 × 104 400 0.254 1.38 × 104 500 0.317 1.73 × 104 600 0.380 2.07 × 104 700 0.444 2.42 × 104 800 0.507 2.77 × 104 900 0.571 3.11 × 104 1000 0.634 3.46 × 104 2000 1.27 6.92 × 104 3000 1.90 1.04 × 105 4000 2.54 1.38 × 105 5000 3.17 1.73 × 105 6000 3.80 2.07 × 105 7000 4.44 2.42 × 105 8000 5.07 2.77 × 105 8590 5.45 2.97 × 105
 Steel I Beam: W8 × 10 (Wide Flange 8 inch tall × 10 lbf/ft) L = 20.0 ft (lbf/ft) (in) (psi) 10.0 0.0200 615 20.0 0.0401 1230 30.0 0.0601 1840 40.0 0.0802 2460 50.0 0.100 3070 60.0 0.120 3690 70.0 0.140 4300 80.0 0.160 4920 90.0 0.180 5530 100 0.200 6150 200 0.401 1.23 × 104 300 0.601 1.84 × 104 400 0.802 2.46 × 104 500 1.00 3.07 × 104 600 1.20 3.69 × 104 700 1.40 4.30 × 104 800 1.60 4.92 × 104 900 1.80 5.53 × 104 1000 2.00 6.15 × 104 2000 4.01 1.23 × 105 3000 6.01 1.84 × 105 3940 7.89 2.42 × 105
 Steel I Beam: W8 × 10 (Wide Flange 8 inch tall × 10 lbf/ft) L = 25.0 ft (lbf/ft) (in) (psi) 10.0 0.0489 961 20.0 0.0979 1920 30.0 0.147 2880 40.0 0.196 3840 50.0 0.245 4800 60.0 0.294 5760 70.0 0.342 6720 80.0 0.391 7690 90.0 0.440 8650 100 0.489 9610 200 0.979 1.92 × 104 300 1.47 2.88 × 104 400 1.96 3.84 × 104 500 2.45 4.80 × 104 600 2.94 5.76 × 104 700 3.42 6.72 × 104 800 3.91 7.69 × 104 900 4.40 8.65 × 104 1000 4.89 9.61 × 104 1610 7.89 1.55 × 105
 Steel I Beam: W8 × 10 (Wide Flange 8 inch tall × 10 lbf/ft) L = 30.0 ft (lbf/ft) (in) (psi) 10.0 0.101 1380 20.0 0.203 2770 30.0 0.304 4150 40.0 0.406 5530 50.0 0.507 6920 60.0 0.609 8300 70.0 0.710 9680 80.0 0.812 1.11 × 104 90.0 0.913 1.24 × 104 100 1.01 1.38 × 104 200 2.03 2.77 × 104 300 3.04 4.15 × 104 400 4.06 5.53 × 104 500 5.07 6.92 × 104 600 6.09 8.30 × 104 700 7.10 9.68 × 104 778 7.89 1.08 × 105
 Steel I Beam: W8 × 10 (Wide Flange 8 inch tall × 10 lbf/ft) L = 40.0 ft (lbf/ft) (in) (psi) 10.0 0.321 2460 20.0 0.641 4920 30.0 0.962 7380 40.0 1.28 9840 50.0 1.60 1.23 × 104 60.0 1.92 1.48 × 104 70.0 2.24 1.72 × 104 80.0 2.57 1.97 × 104 90.0 2.89 2.21 × 104 100 3.21 2.46 × 104 200 6.41 4.92 × 104 246 7.89 6.05 × 104
 Steel I Beam: W8 × 10 (Wide Flange 8 inch tall × 10 lbf/ft) L = 50.0 ft (lbf/ft) (in) (psi) 10.0 0.783 3840 20.0 1.57 7690 30.0 2.35 1.15 × 104 40.0 3.13 1.54 × 104 50.0 3.91 1.92 × 104 60.0 4.70 2.31 × 104 70.0 5.48 2.69 × 104 80.0 6.26 3.07 × 104 90.0 7.05 3.46 × 104 100 7.83 3.84 × 104 101 7.89 3.87 × 104
 Steel I Beam: W8 × 10 (Wide Flange 8 inch tall × 10 lbf/ft) L = 60.0 ft (lbf/ft) (in) (psi) 10.0 1.62 5530 20.0 3.25 1.11 × 104 30.0 4.87 1.66 × 104 40.0 6.49 2.21 × 104 48.6 7.89 2.69 × 104
 Steel I Beam: W8 × 10 (Wide Flange 8 inch tall × 10 lbf/ft) L = 70.0 ft (lbf/ft) (in) (psi) 10.0 3.01 7530 20.0 6.01 1.51 × 104 26.2 7.89 1.98 × 104
 Steel I Beam: W8 × 10 (Wide Flange 8 inch tall × 10 lbf/ft) L = 80.0 ft (lbf/ft) (in) (psi) 10.0 5.13 9840 15.4 7.89 1.51 × 104