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Glossary » Beams » Simply Supported » Uniformly Distributed Load » Single Span » Wide Flange Steel I Beam » W12 × 30

For a simply supported beam in a single span, the maximum displacement and the maximum normal stress occur at the center of the beam.
The tabulated data listed in this page are calculated based on the area moment of inertia (Ixx = 238 in4) for the W12 × 30 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: W12 × 30 (Wide Flange 12 inch tall × 30 lbf/ft) L = 3.00 ft (lbf/ft) (in) (psi) 30.0 7.54 × 10-6 10.5 40.0 1.01 × 10-5 14.0 50.0 1.26 × 10-5 17.5 60.0 1.51 × 10-5 21.0 70.0 1.76 × 10-5 24.5 80.0 2.01 × 10-5 28.0 90.0 2.26 × 10-5 31.5 100 2.51 × 10-5 35.0 200 5.03 × 10-5 70.0 300 7.54 × 10-5 105 400 1.01 × 10-4 140 500 1.26 × 10-4 175 600 1.51 × 10-4 210 700 1.76 × 10-4 245 800 2.01 × 10-4 280 900 2.26 × 10-4 315 1000 2.51 × 10-4 350 2000 5.03 × 10-4 700 3000 7.54 × 10-4 1050 4000 0.00101 1400 5000 0.00126 1750 6000 0.00151 2100 7000 0.00176 2450 8000 0.00201 2800 9000 0.00226 3150 1.00 × 104 0.00251 3500 2.00 × 104 0.00503 7000 3.00 × 104 0.00754 1.05 × 104 4.00 × 104 0.0101 1.40 × 104 5.00 × 104 0.0126 1.75 × 104 6.00 × 104 0.0151 2.10 × 104 7.00 × 104 0.0176 2.45 × 104 8.00 × 104 0.0201 2.80 × 104 9.00 × 104 0.0226 3.15 × 104 1.00 × 105 0.0251 3.50 × 104 2.00 × 105 0.0503 7.00 × 104 3.00 × 105 0.0754 1.05 × 105 4.00 × 105 0.101 1.40 × 105 5.00 × 105 0.126 1.75 × 105 6.00 × 105 0.151 2.10 × 105 7.00 × 105 0.176 2.45 × 105 8.00 × 105 0.201 2.80 × 105 8.49 × 105 0.213 2.97 × 105
 Steel I Beam: W12 × 30 (Wide Flange 12 inch tall × 30 lbf/ft) L = 5.00 ft (lbf/ft) (in) (psi) 30.0 5.82 × 10-5 29.2 40.0 7.76 × 10-5 38.9 50.0 9.70 × 10-5 48.6 60.0 1.16 × 10-4 58.3 70.0 1.36 × 10-4 68.1 80.0 1.55 × 10-4 77.8 90.0 1.75 × 10-4 87.5 100 1.94 × 10-4 97.2 200 3.88 × 10-4 194 300 5.82 × 10-4 292 400 7.76 × 10-4 389 500 9.70 × 10-4 486 600 0.00116 583 700 0.00136 681 800 0.00155 778 900 0.00175 875 1000 0.00194 972 2000 0.00388 1940 3000 0.00582 2920 4000 0.00776 3890 5000 0.00970 4860 6000 0.0116 5830 7000 0.0136 6810 8000 0.0155 7780 9000 0.0175 8750 1.00 × 104 0.0194 9720 2.00 × 104 0.0388 1.94 × 104 3.00 × 104 0.0582 2.92 × 104 4.00 × 104 0.0776 3.89 × 104 5.00 × 104 0.0970 4.86 × 104 6.00 × 104 0.116 5.83 × 104 7.00 × 104 0.136 6.81 × 104 8.00 × 104 0.155 7.78 × 104 9.00 × 104 0.175 8.75 × 104 1.00 × 105 0.194 9.72 × 104 2.00 × 105 0.388 1.94 × 105 3.00 × 105 0.582 2.92 × 105 3.06 × 105 0.593 2.97 × 105
 Steel I Beam: W12 × 30 (Wide Flange 12 inch tall × 30 lbf/ft) L = 10.0 ft (lbf/ft) (in) (psi) 30.0 9.31 × 10-4 117 40.0 0.00124 156 50.0 0.00155 194 60.0 0.00186 233 70.0 0.00217 272 80.0 0.00248 311 90.0 0.00279 350 100 0.00310 389 200 0.00621 778 300 0.00931 1170 400 0.0124 1560 500 0.0155 1940 600 0.0186 2330 700 0.0217 2720 800 0.0248 3110 900 0.0279 3500 1000 0.0310 3890 2000 0.0621 7780 3000 0.0931 1.17 × 104 4000 0.124 1.56 × 104 5000 0.155 1.94 × 104 6000 0.186 2.33 × 104 7000 0.217 2.72 × 104 8000 0.248 3.11 × 104 9000 0.279 3.50 × 104 1.00 × 104 0.310 3.89 × 104 2.00 × 104 0.621 7.78 × 104 3.00 × 104 0.931 1.17 × 105 4.00 × 104 1.24 1.56 × 105 5.00 × 104 1.55 1.94 × 105 6.00 × 104 1.86 2.33 × 105 7.00 × 104 2.17 2.72 × 105 7.64 × 104 2.37 2.97 × 105
 Steel I Beam: W12 × 30 (Wide Flange 12 inch tall × 30 lbf/ft) L = 15.0 ft (lbf/ft) (in) (psi) 30.0 0.00471 262 40.0 0.00629 350 50.0 0.00786 437 60.0 0.00943 525 70.0 0.0110 612 80.0 0.0126 700 90.0 0.0141 787 100 0.0157 875 200 0.0314 1750 300 0.0471 2620 400 0.0629 3500 500 0.0786 4370 600 0.0943 5250 700 0.110 6120 800 0.126 7000 900 0.141 7870 1000 0.157 8750 2000 0.314 1.75 × 104 3000 0.471 2.62 × 104 4000 0.629 3.50 × 104 5000 0.786 4.37 × 104 6000 0.943 5.25 × 104 7000 1.10 6.12 × 104 8000 1.26 7.00 × 104 9000 1.41 7.87 × 104 1.00 × 104 1.57 8.75 × 104 2.00 × 104 3.14 1.75 × 105 3.00 × 104 4.71 2.62 × 105 3.39 × 104 5.33 2.97 × 105
 Steel I Beam: W12 × 30 (Wide Flange 12 inch tall × 30 lbf/ft) L = 20.0 ft (lbf/ft) (in) (psi) 30.0 0.0149 467 40.0 0.0199 622 50.0 0.0248 778 60.0 0.0298 933 70.0 0.0348 1090 80.0 0.0397 1240 90.0 0.0447 1400 100 0.0497 1560 200 0.0993 3110 300 0.149 4670 400 0.199 6220 500 0.248 7780 600 0.298 9330 700 0.348 1.09 × 104 800 0.397 1.24 × 104 900 0.447 1.40 × 104 1000 0.497 1.56 × 104 2000 0.993 3.11 × 104 3000 1.49 4.67 × 104 4000 1.99 6.22 × 104 5000 2.48 7.78 × 104 6000 2.98 9.33 × 104 7000 3.48 1.09 × 105 8000 3.97 1.24 × 105 9000 4.47 1.40 × 105 1.00 × 104 4.97 1.56 × 105 1.91 × 104 9.48 2.97 × 105
 Steel I Beam: W12 × 30 (Wide Flange 12 inch tall × 30 lbf/ft) L = 25.0 ft (lbf/ft) (in) (psi) 30.0 0.0364 729 40.0 0.0485 972 50.0 0.0606 1220 60.0 0.0727 1460 70.0 0.0849 1700 80.0 0.0970 1940 90.0 0.109 2190 100 0.121 2430 200 0.242 4860 300 0.364 7290 400 0.485 9720 500 0.606 1.22 × 104 600 0.727 1.46 × 104 700 0.849 1.70 × 104 800 0.970 1.94 × 104 900 1.09 2.19 × 104 1000 1.21 2.43 × 104 2000 2.42 4.86 × 104 3000 3.64 7.29 × 104 4000 4.85 9.72 × 104 5000 6.06 1.22 × 105 6000 7.27 1.46 × 105 7000 8.49 1.70 × 105 8000 9.70 1.94 × 105 9000 10.9 2.19 × 105 1.00 × 104 12.1 2.43 × 105 1.22 × 104 14.8 2.97 × 105
 Steel I Beam: W12 × 30 (Wide Flange 12 inch tall × 30 lbf/ft) L = 30.0 ft (lbf/ft) (in) (psi) 30.0 0.0754 1050 40.0 0.101 1400 50.0 0.126 1750 60.0 0.151 2100 70.0 0.176 2450 80.0 0.201 2800 90.0 0.226 3150 100 0.251 3500 200 0.503 7000 300 0.754 1.05 × 104 400 1.01 1.40 × 104 500 1.26 1.75 × 104 600 1.51 2.10 × 104 700 1.76 2.45 × 104 800 2.01 2.80 × 104 900 2.26 3.15 × 104 1000 2.51 3.50 × 104 2000 5.03 7.00 × 104 3000 7.54 1.05 × 105 4000 10.1 1.40 × 105 4910 12.3 1.72 × 105
 Steel I Beam: W12 × 30 (Wide Flange 12 inch tall × 30 lbf/ft) L = 40.0 ft (lbf/ft) (in) (psi) 30.0 0.238 1870 40.0 0.318 2490 50.0 0.397 3110 60.0 0.477 3730 70.0 0.556 4360 80.0 0.636 4980 90.0 0.715 5600 100 0.795 6220 200 1.59 1.24 × 104 300 2.38 1.87 × 104 400 3.18 2.49 × 104 500 3.97 3.11 × 104 600 4.77 3.73 × 104 700 5.56 4.36 × 104 800 6.36 4.98 × 104 900 7.15 5.60 × 104 1000 7.95 6.22 × 104 1550 12.3 9.66 × 104
 Steel I Beam: W12 × 30 (Wide Flange 12 inch tall × 30 lbf/ft) L = 50.0 ft (lbf/ft) (in) (psi) 30.0 0.582 2920 40.0 0.776 3890 50.0 0.970 4860 60.0 1.16 5830 70.0 1.36 6810 80.0 1.55 7780 90.0 1.75 8750 100 1.94 9720 200 3.88 1.94 × 104 300 5.82 2.92 × 104 400 7.76 3.89 × 104 500 9.70 4.86 × 104 600 11.6 5.83 × 104 636 12.3 6.18 × 104
 Steel I Beam: W12 × 30 (Wide Flange 12 inch tall × 30 lbf/ft) L = 60.0 ft (lbf/ft) (in) (psi) 30.0 1.21 4200 40.0 1.61 5600 50.0 2.01 7000 60.0 2.41 8400 70.0 2.82 9800 80.0 3.22 1.12 × 104 90.0 3.62 1.26 × 104 100 4.02 1.40 × 104 200 8.05 2.80 × 104 300 12.1 4.20 × 104 307 12.3 4.29 × 104
 Steel I Beam: W12 × 30 (Wide Flange 12 inch tall × 30 lbf/ft) L = 70.0 ft (lbf/ft) (in) (psi) 30.0 2.24 5720 40.0 2.98 7620 50.0 3.73 9530 60.0 4.47 1.14 × 104 70.0 5.22 1.33 × 104 80.0 5.96 1.52 × 104 90.0 6.71 1.71 × 104 100 7.45 1.91 × 104 166 12.3 3.16 × 104
 Steel I Beam: W12 × 30 (Wide Flange 12 inch tall × 30 lbf/ft) L = 80.0 ft (lbf/ft) (in) (psi) 30.0 3.81 7470 40.0 5.09 9950 50.0 6.36 1.24 × 104 60.0 7.63 1.49 × 104 70.0 8.90 1.74 × 104 80.0 10.2 1.99 × 104 90.0 11.4 2.24 × 104 97.1 12.3 2.42 × 104
 Steel I Beam: W12 × 30 (Wide Flange 12 inch tall × 30 lbf/ft) L = 90.0 ft (lbf/ft) (in) (psi) 30.0 6.11 9450 40.0 8.15 1.26 × 104 50.0 10.2 1.57 × 104 60.0 12.2 1.89 × 104 60.6 12.3 1.91 × 104
 Steel I Beam: W12 × 30 (Wide Flange 12 inch tall × 30 lbf/ft) L = 100 ft (lbf/ft) (in) (psi) 30.0 9.31 1.17 × 104 39.8 12.3 1.55 × 104