Wide Flange Steel I Beam: W8 × 48

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Glossary » Beams » Simply Supported » Uniformly Distributed Load » Three 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 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 = 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 8.15 × 10-6 12.0 50.0 8.49 × 10-6 12.5 60.0 1.02 × 10-5 15.0 70.0 1.19 × 10-5 17.5 80.0 1.36 × 10-5 20.0 90.0 1.53 × 10-5 22.5 100 1.70 × 10-5 24.9 200 3.40 × 10-5 49.9 300 5.09 × 10-5 74.8 400 6.79 × 10-5 99.8 500 8.49 × 10-5 125 600 1.02 × 10-4 150 700 1.19 × 10-4 175 800 1.36 × 10-4 200 900 1.53 × 10-4 225 1000 1.70 × 10-4 249 2000 3.40 × 10-4 499 3000 5.09 × 10-4 748 4000 6.79 × 10-4 998 5000 8.49 × 10-4 1250 6000 0.00102 1500 7000 0.00119 1750 8000 0.00136 2000 9000 0.00153 2250 1.00 × 104 0.00170 2490 2.00 × 104 0.00340 4990 3.00 × 104 0.00509 7480 4.00 × 104 0.00679 9980 5.00 × 104 0.00849 1.25 × 104 6.00 × 104 0.0102 1.50 × 104 7.00 × 104 0.0119 1.75 × 104 8.00 × 104 0.0136 2.00 × 104 9.00 × 104 0.0153 2.25 × 104 1.00 × 105 0.0170 2.49 × 104 2.00 × 105 0.0340 4.99 × 104 3.00 × 105 0.0509 7.48 × 104 4.00 × 105 0.0679 9.98 × 104 5.00 × 105 0.0849 1.25 × 105 6.00 × 105 0.102 1.50 × 105 7.00 × 105 0.119 1.75 × 105 8.00 × 105 0.136 2.00 × 105 9.00 × 105 0.153 2.25 × 105 1.00 × 106 0.170 2.49 × 105 1.19 × 106 0.202 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 6.29 × 10-5 33.3 50.0 6.55 × 10-5 34.6 60.0 7.86 × 10-5 41.6 70.0 9.17 × 10-5 48.5 80.0 1.05 × 10-4 55.4 90.0 1.18 × 10-4 62.4 100 1.31 × 10-4 69.3 200 2.62 × 10-4 139 300 3.93 × 10-4 208 400 5.24 × 10-4 277 500 6.55 × 10-4 346 600 7.86 × 10-4 416 700 9.17 × 10-4 485 800 0.00105 554 900 0.00118 624 1000 0.00131 693 2000 0.00262 1390 3000 0.00393 2080 4000 0.00524 2770 5000 0.00655 3460 6000 0.00786 4160 7000 0.00917 4850 8000 0.0105 5540 9000 0.0118 6240 1.00 × 104 0.0131 6930 2.00 × 104 0.0262 1.39 × 104 3.00 × 104 0.0393 2.08 × 104 4.00 × 104 0.0524 2.77 × 104 5.00 × 104 0.0655 3.46 × 104 6.00 × 104 0.0786 4.16 × 104 7.00 × 104 0.0917 4.85 × 104 8.00 × 104 0.105 5.54 × 104 9.00 × 104 0.118 6.24 × 104 1.00 × 105 0.131 6.93 × 104 2.00 × 105 0.262 1.39 × 105 3.00 × 105 0.393 2.08 × 105 4.00 × 105 0.524 2.77 × 105 4.29 × 105 0.562 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 0.00101 133 50.0 0.00105 139 60.0 0.00126 166 70.0 0.00147 194 80.0 0.00168 222 90.0 0.00189 249 100 0.00210 277 200 0.00419 554 300 0.00629 832 400 0.00839 1110 500 0.0105 1390 600 0.0126 1660 700 0.0147 1940 800 0.0168 2220 900 0.0189 2490 1000 0.0210 2770 2000 0.0419 5540 3000 0.0629 8320 4000 0.0839 1.11 × 104 5000 0.105 1.39 × 104 6000 0.126 1.66 × 104 7000 0.147 1.94 × 104 8000 0.168 2.22 × 104 9000 0.189 2.49 × 104 1.00 × 104 0.210 2.77 × 104 2.00 × 104 0.419 5.54 × 104 3.00 × 104 0.629 8.32 × 104 4.00 × 104 0.839 1.11 × 105 5.00 × 104 1.05 1.39 × 105 6.00 × 104 1.26 1.66 × 105 7.00 × 104 1.47 1.94 × 105 8.00 × 104 1.68 2.22 × 105 9.00 × 104 1.89 2.49 × 105 1.00 × 105 2.10 2.77 × 105 1.07 × 105 2.25 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 0.00509 299 50.0 0.00531 312 60.0 0.00637 374 70.0 0.00743 437 80.0 0.00849 499 90.0 0.00955 561 100 0.0106 624 200 0.0212 1250 300 0.0318 1870 400 0.0425 2490 500 0.0531 3120 600 0.0637 3740 700 0.0743 4370 800 0.0849 4990 900 0.0955 5610 1000 0.106 6240 2000 0.212 1.25 × 104 3000 0.318 1.87 × 104 4000 0.425 2.49 × 104 5000 0.531 3.12 × 104 6000 0.637 3.74 × 104 7000 0.743 4.37 × 104 8000 0.849 4.99 × 104 9000 0.955 5.61 × 104 1.00 × 104 1.06 6.24 × 104 2.00 × 104 2.12 1.25 × 105 3.00 × 104 3.18 1.87 × 105 4.00 × 104 4.25 2.49 × 105 4.76 × 104 5.06 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 0.0161 532 50.0 0.0168 554 60.0 0.0201 665 70.0 0.0235 776 80.0 0.0268 887 90.0 0.0302 998 100 0.0335 1110 200 0.0671 2220 300 0.101 3330 400 0.134 4430 500 0.168 5540 600 0.201 6650 700 0.235 7760 800 0.268 8870 900 0.302 9980 1000 0.335 1.11 × 104 2000 0.671 2.22 × 104 3000 1.01 3.33 × 104 4000 1.34 4.43 × 104 5000 1.68 5.54 × 104 6000 2.01 6.65 × 104 7000 2.35 7.76 × 104 8000 2.68 8.87 × 104 9000 3.02 9.98 × 104 1.00 × 104 3.35 1.11 × 105 2.00 × 104 6.71 2.22 × 105 2.68 × 104 8.99 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 0.0393 832 50.0 0.0410 866 60.0 0.0491 1040 70.0 0.0573 1210 80.0 0.0655 1390 90.0 0.0737 1560 100 0.0819 1730 200 0.164 3460 300 0.246 5200 400 0.328 6930 500 0.410 8660 600 0.491 1.04 × 104 700 0.573 1.21 × 104 800 0.655 1.39 × 104 900 0.737 1.56 × 104 1000 0.819 1.73 × 104 2000 1.64 3.46 × 104 3000 2.46 5.20 × 104 4000 3.28 6.93 × 104 5000 4.10 8.66 × 104 6000 4.91 1.04 × 105 7000 5.73 1.21 × 105 8000 6.55 1.39 × 105 9000 7.37 1.56 × 105 1.00 × 104 8.19 1.73 × 105 1.71 × 104 14.0 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 0.0815 1200 50.0 0.0849 1250 60.0 0.102 1500 70.0 0.119 1750 80.0 0.136 2000 90.0 0.153 2250 100 0.170 2490 200 0.340 4990 300 0.509 7480 400 0.679 9980 500 0.849 1.25 × 104 600 1.02 1.50 × 104 700 1.19 1.75 × 104 800 1.36 2.00 × 104 900 1.53 2.25 × 104 1000 1.70 2.49 × 104 2000 3.40 4.99 × 104 3000 5.09 7.48 × 104 4000 6.79 9.98 × 104 5000 8.49 1.25 × 105 5000 8.50 1.25 × 105
 Steel I Beam: W8 × 48 (Wide Flange 8 inch tall × 48 lbf/ft) L = 40.0 ft (lbf/ft) (in) (psi) 48.0 0.258 2130 50.0 0.268 2220 60.0 0.322 2660 70.0 0.376 3100 80.0 0.429 3550 90.0 0.483 3990 100 0.537 4430 200 1.07 8870 300 1.61 1.33 × 104 400 2.15 1.77 × 104 500 2.68 2.22 × 104 600 3.22 2.66 × 104 700 3.76 3.10 × 104 800 4.29 3.55 × 104 900 4.83 3.99 × 104 1000 5.37 4.43 × 104 1580 8.50 7.02 × 104
 Steel I Beam: W8 × 48 (Wide Flange 8 inch tall × 48 lbf/ft) L = 50.0 ft (lbf/ft) (in) (psi) 48.0 0.629 3330 50.0 0.655 3460 60.0 0.786 4160 70.0 0.917 4850 80.0 1.05 5540 90.0 1.18 6240 100 1.31 6930 200 2.62 1.39 × 104 300 3.93 2.08 × 104 400 5.24 2.77 × 104 500 6.55 3.46 × 104 600 7.86 4.16 × 104 649 8.50 4.49 × 104
 Steel I Beam: W8 × 48 (Wide Flange 8 inch tall × 48 lbf/ft) L = 60.0 ft (lbf/ft) (in) (psi) 48.0 1.30 4790 50.0 1.36 4990 60.0 1.63 5990 70.0 1.90 6980 80.0 2.17 7980 90.0 2.45 8980 100 2.72 9980 200 5.43 2.00 × 104 300 8.15 2.99 × 104 313 8.50 3.12 × 104
 Steel I Beam: W8 × 48 (Wide Flange 8 inch tall × 48 lbf/ft) L = 70.0 ft (lbf/ft) (in) (psi) 48.0 2.42 6520 50.0 2.52 6790 60.0 3.02 8150 70.0 3.52 9510 80.0 4.03 1.09 × 104 90.0 4.53 1.22 × 104 100 5.03 1.36 × 104 169 8.50 2.29 × 104
 Steel I Beam: W8 × 48 (Wide Flange 8 inch tall × 48 lbf/ft) L = 80.0 ft (lbf/ft) (in) (psi) 48.0 4.12 8510 50.0 4.29 8870 60.0 5.15 1.06 × 104 70.0 6.01 1.24 × 104 80.0 6.87 1.42 × 104 90.0 7.73 1.60 × 104 99.0 8.50 1.76 × 104
 Steel I Beam: W8 × 48 (Wide Flange 8 inch tall × 48 lbf/ft) L = 90.0 ft (lbf/ft) (in) (psi) 48.0 6.60 1.08 × 104 50.0 6.88 1.12 × 104 60.0 8.25 1.35 × 104 61.8 8.50 1.39 × 104