Wide Flange Steel I Beam: W8 × 48

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Glossary » Beams » Simply Supported » Uniformly Distributed Load » Four Equal Spans » Wide Flange Steel I Beam » W8 × 48
Wide Flange 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 = 184 in4) for the W8 × 48 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 × 48 (Wide Flange 8 inch tall × 48 lbf/ft) L = 3.00 ft (lbf/ft) (in) (psi) 48.0 7.55 × 10-6 12.8 50.0 7.87 × 10-6 13.4 60.0 9.44 × 10-6 16.0 70.0 1.10 × 10-5 18.7 80.0 1.26 × 10-5 21.4 90.0 1.42 × 10-5 24.0 100 1.57 × 10-5 26.7 200 3.15 × 10-5 53.4 300 4.72 × 10-5 80.2 400 6.29 × 10-5 107 500 7.87 × 10-5 134 600 9.44 × 10-5 160 700 1.10 × 10-4 187 800 1.26 × 10-4 214 900 1.42 × 10-4 240 1000 1.57 × 10-4 267 2000 3.15 × 10-4 534 3000 4.72 × 10-4 802 4000 6.29 × 10-4 1070 5000 7.87 × 10-4 1340 6000 9.44 × 10-4 1600 7000 0.00110 1870 8000 0.00126 2140 9000 0.00142 2400 1.00 × 104 0.00157 2670 2.00 × 104 0.00315 5340 3.00 × 104 0.00472 8020 4.00 × 104 0.00629 1.07 × 104 5.00 × 104 0.00787 1.34 × 104 6.00 × 104 0.00944 1.60 × 104 7.00 × 104 0.0110 1.87 × 104 8.00 × 104 0.0126 2.14 × 104 9.00 × 104 0.0142 2.40 × 104 1.00 × 105 0.0157 2.67 × 104 2.00 × 105 0.0315 5.34 × 104 3.00 × 105 0.0472 8.02 × 104 4.00 × 105 0.0629 1.07 × 105 5.00 × 105 0.0787 1.34 × 105 6.00 × 105 0.0944 1.60 × 105 7.00 × 105 0.110 1.87 × 105 8.00 × 105 0.126 2.14 × 105 9.00 × 105 0.142 2.40 × 105 1.00 × 106 0.157 2.67 × 105 1.11 × 106 0.175 2.97 × 105
 Steel I Beam: W8 × 48 (Wide Flange 8 inch tall × 48 lbf/ft) L = 5.00 ft (lbf/ft) (in) (psi) 48.0 5.83 × 10-5 35.6 50.0 6.07 × 10-5 37.1 60.0 7.28 × 10-5 44.5 70.0 8.50 × 10-5 51.9 80.0 9.71 × 10-5 59.4 90.0 1.09 × 10-4 66.8 100 1.21 × 10-4 74.2 200 2.43 × 10-4 148 300 3.64 × 10-4 223 400 4.86 × 10-4 297 500 6.07 × 10-4 371 600 7.28 × 10-4 445 700 8.50 × 10-4 519 800 9.71 × 10-4 594 900 0.00109 668 1000 0.00121 742 2000 0.00243 1480 3000 0.00364 2230 4000 0.00486 2970 5000 0.00607 3710 6000 0.00728 4450 7000 0.00850 5190 8000 0.00971 5940 9000 0.0109 6680 1.00 × 104 0.0121 7420 2.00 × 104 0.0243 1.48 × 104 3.00 × 104 0.0364 2.23 × 104 4.00 × 104 0.0486 2.97 × 104 5.00 × 104 0.0607 3.71 × 104 6.00 × 104 0.0728 4.45 × 104 7.00 × 104 0.0850 5.19 × 104 8.00 × 104 0.0971 5.94 × 104 9.00 × 104 0.109 6.68 × 104 1.00 × 105 0.121 7.42 × 104 2.00 × 105 0.243 1.48 × 105 3.00 × 105 0.364 2.23 × 105 4.00 × 105 0.486 2.97 × 105 4.00 × 105 0.486 2.97 × 105
 Steel I Beam: W8 × 48 (Wide Flange 8 inch tall × 48 lbf/ft) L = 10.0 ft (lbf/ft) (in) (psi) 48.0 9.32 × 10-4 142 50.0 9.71 × 10-4 148 60.0 0.00117 178 70.0 0.00136 208 80.0 0.00155 237 90.0 0.00175 267 100 0.00194 297 200 0.00389 594 300 0.00583 891 400 0.00777 1190 500 0.00971 1480 600 0.0117 1780 700 0.0136 2080 800 0.0155 2370 900 0.0175 2670 1000 0.0194 2970 2000 0.0389 5940 3000 0.0583 8910 4000 0.0777 1.19 × 104 5000 0.0971 1.48 × 104 6000 0.117 1.78 × 104 7000 0.136 2.08 × 104 8000 0.155 2.37 × 104 9000 0.175 2.67 × 104 1.00 × 104 0.194 2.97 × 104 2.00 × 104 0.389 5.94 × 104 3.00 × 104 0.583 8.91 × 104 4.00 × 104 0.777 1.19 × 105 5.00 × 104 0.971 1.48 × 105 6.00 × 104 1.17 1.78 × 105 7.00 × 104 1.36 2.08 × 105 8.00 × 104 1.55 2.37 × 105 9.00 × 104 1.75 2.67 × 105 1.00 × 105 1.94 2.97 × 105 1.00 × 105 1.94 2.97 × 105
 Steel I Beam: W8 × 48 (Wide Flange 8 inch tall × 48 lbf/ft) L = 15.0 ft (lbf/ft) (in) (psi) 48.0 0.00472 321 50.0 0.00492 334 60.0 0.00590 401 70.0 0.00688 468 80.0 0.00787 534 90.0 0.00885 601 100 0.00983 668 200 0.0197 1340 300 0.0295 2000 400 0.0393 2670 500 0.0492 3340 600 0.0590 4010 700 0.0688 4680 800 0.0787 5340 900 0.0885 6010 1000 0.0983 6680 2000 0.197 1.34 × 104 3000 0.295 2.00 × 104 4000 0.393 2.67 × 104 5000 0.492 3.34 × 104 6000 0.590 4.01 × 104 7000 0.688 4.68 × 104 8000 0.787 5.34 × 104 9000 0.885 6.01 × 104 1.00 × 104 0.983 6.68 × 104 2.00 × 104 1.97 1.34 × 105 3.00 × 104 2.95 2.00 × 105 4.00 × 104 3.93 2.67 × 105 4.45 × 104 4.37 2.97 × 105
 Steel I Beam: W8 × 48 (Wide Flange 8 inch tall × 48 lbf/ft) L = 20.0 ft (lbf/ft) (in) (psi) 48.0 0.0149 570 50.0 0.0155 594 60.0 0.0186 712 70.0 0.0218 831 80.0 0.0249 950 90.0 0.0280 1070 100 0.0311 1190 200 0.0622 2370 300 0.0932 3560 400 0.124 4750 500 0.155 5940 600 0.186 7120 700 0.218 8310 800 0.249 9500 900 0.280 1.07 × 104 1000 0.311 1.19 × 104 2000 0.622 2.37 × 104 3000 0.932 3.56 × 104 4000 1.24 4.75 × 104 5000 1.55 5.94 × 104 6000 1.86 7.12 × 104 7000 2.18 8.31 × 104 8000 2.49 9.50 × 104 9000 2.80 1.07 × 105 1.00 × 104 3.11 1.19 × 105 2.00 × 104 6.22 2.37 × 105 2.50 × 104 7.77 2.97 × 105
 Steel I Beam: W8 × 48 (Wide Flange 8 inch tall × 48 lbf/ft) L = 25.0 ft (lbf/ft) (in) (psi) 48.0 0.0364 891 50.0 0.0379 928 60.0 0.0455 1110 70.0 0.0531 1300 80.0 0.0607 1480 90.0 0.0683 1670 100 0.0759 1860 200 0.152 3710 300 0.228 5570 400 0.304 7420 500 0.379 9280 600 0.455 1.11 × 104 700 0.531 1.30 × 104 800 0.607 1.48 × 104 900 0.683 1.67 × 104 1000 0.759 1.86 × 104 2000 1.52 3.71 × 104 3000 2.28 5.57 × 104 4000 3.04 7.42 × 104 5000 3.79 9.28 × 104 6000 4.55 1.11 × 105 7000 5.31 1.30 × 105 8000 6.07 1.48 × 105 9000 6.83 1.67 × 105 1.00 × 104 7.59 1.86 × 105 1.60 × 104 12.1 2.97 × 105
 Steel I Beam: W8 × 48 (Wide Flange 8 inch tall × 48 lbf/ft) L = 30.0 ft (lbf/ft) (in) (psi) 48.0 0.0755 1280 50.0 0.0787 1340 60.0 0.0944 1600 70.0 0.110 1870 80.0 0.126 2140 90.0 0.142 2400 100 0.157 2670 200 0.315 5340 300 0.472 8020 400 0.629 1.07 × 104 500 0.787 1.34 × 104 600 0.944 1.60 × 104 700 1.10 1.87 × 104 800 1.26 2.14 × 104 900 1.42 2.40 × 104 1000 1.57 2.67 × 104 2000 3.15 5.34 × 104 3000 4.72 8.02 × 104 4000 6.29 1.07 × 105 5000 7.87 1.34 × 105 5400 8.50 1.44 × 105
 Steel I Beam: W8 × 48 (Wide Flange 8 inch tall × 48 lbf/ft) L = 40.0 ft (lbf/ft) (in) (psi) 48.0 0.239 2280 50.0 0.249 2370 60.0 0.298 2850 70.0 0.348 3320 80.0 0.398 3800 90.0 0.448 4270 100 0.497 4750 200 0.995 9500 300 1.49 1.42 × 104 400 1.99 1.90 × 104 500 2.49 2.37 × 104 600 2.98 2.85 × 104 700 3.48 3.32 × 104 800 3.98 3.80 × 104 900 4.48 4.27 × 104 1000 4.97 4.75 × 104 1710 8.50 8.12 × 104
 Steel I Beam: W8 × 48 (Wide Flange 8 inch tall × 48 lbf/ft) L = 50.0 ft (lbf/ft) (in) (psi) 48.0 0.583 3560 50.0 0.607 3710 60.0 0.728 4450 70.0 0.850 5190 80.0 0.971 5940 90.0 1.09 6680 100 1.21 7420 200 2.43 1.48 × 104 300 3.64 2.23 × 104 400 4.86 2.97 × 104 500 6.07 3.71 × 104 600 7.28 4.45 × 104 700 8.50 5.19 × 104 700 8.50 5.20 × 104
 Steel I Beam: W8 × 48 (Wide Flange 8 inch tall × 48 lbf/ft) L = 60.0 ft (lbf/ft) (in) (psi) 48.0 1.21 5130 50.0 1.26 5340 60.0 1.51 6410 70.0 1.76 7480 80.0 2.01 8550 90.0 2.27 9620 100 2.52 1.07 × 104 200 5.04 2.14 × 104 300 7.55 3.21 × 104 338 8.50 3.61 × 104
 Steel I Beam: W8 × 48 (Wide Flange 8 inch tall × 48 lbf/ft) L = 70.0 ft (lbf/ft) (in) (psi) 48.0 2.24 6980 50.0 2.33 7270 60.0 2.80 8730 70.0 3.26 1.02 × 104 80.0 3.73 1.16 × 104 90.0 4.20 1.31 × 104 100 4.66 1.45 × 104 182 8.50 2.65 × 104
 Steel I Beam: W8 × 48 (Wide Flange 8 inch tall × 48 lbf/ft) L = 80.0 ft (lbf/ft) (in) (psi) 48.0 3.82 9120 50.0 3.98 9500 60.0 4.77 1.14 × 104 70.0 5.57 1.33 × 104 80.0 6.37 1.52 × 104 90.0 7.16 1.71 × 104 100 7.96 1.90 × 104 107 8.50 2.03 × 104
 Steel I Beam: W8 × 48 (Wide Flange 8 inch tall × 48 lbf/ft) L = 90.0 ft (lbf/ft) (in) (psi) 48.0 6.12 1.15 × 104 50.0 6.37 1.20 × 104 60.0 7.65 1.44 × 104 66.7 8.50 1.60 × 104