Wide Flange Steel I Beam: W16 × 45

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Glossary » Beams » Simply Supported » Uniformly Distributed Load » Three Equal Spans » Wide Flange Steel I Beam » W16 × 45
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 = 586 in4) for the W16 × 45 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: W16 × 45 (Wide Flange 16 inch tall × 45 lbf/ft) L = 3.00 ft (lbf/ft) (in) (psi) 45.0 2.40 × 10-6 6.69 50.0 2.67 × 10-6 7.43 60.0 3.20 × 10-6 8.92 70.0 3.73 × 10-6 10.4 80.0 4.27 × 10-6 11.9 90.0 4.80 × 10-6 13.4 100 5.33 × 10-6 14.9 200 1.07 × 10-5 29.7 300 1.60 × 10-5 44.6 400 2.13 × 10-5 59.5 500 2.67 × 10-5 74.3 600 3.20 × 10-5 89.2 700 3.73 × 10-5 104 800 4.27 × 10-5 119 900 4.80 × 10-5 134 1000 5.33 × 10-5 149 2000 1.07 × 10-4 297 3000 1.60 × 10-4 446 4000 2.13 × 10-4 595 5000 2.67 × 10-4 743 6000 3.20 × 10-4 892 7000 3.73 × 10-4 1040 8000 4.27 × 10-4 1190 9000 4.80 × 10-4 1340 1.00 × 104 5.33 × 10-4 1490 2.00 × 104 0.00107 2970 3.00 × 104 0.00160 4460 4.00 × 104 0.00213 5950 5.00 × 104 0.00267 7430 6.00 × 104 0.00320 8920 7.00 × 104 0.00373 1.04 × 104 8.00 × 104 0.00427 1.19 × 104 9.00 × 104 0.00480 1.34 × 104 1.00 × 105 0.00533 1.49 × 104 2.00 × 105 0.0107 2.97 × 104 3.00 × 105 0.0160 4.46 × 104 4.00 × 105 0.0213 5.95 × 104 5.00 × 105 0.0267 7.43 × 104 6.00 × 105 0.0320 8.92 × 104 7.00 × 105 0.0373 1.04 × 105 8.00 × 105 0.0427 1.19 × 105 9.00 × 105 0.0480 1.34 × 105 1.00 × 106 0.0533 1.49 × 105 2.00 × 106 0.107 2.97 × 105
 Steel I Beam: W16 × 45 (Wide Flange 16 inch tall × 45 lbf/ft) L = 5.00 ft (lbf/ft) (in) (psi) 45.0 1.85 × 10-5 18.6 50.0 2.06 × 10-5 20.6 60.0 2.47 × 10-5 24.8 70.0 2.88 × 10-5 28.9 80.0 3.29 × 10-5 33.0 90.0 3.70 × 10-5 37.2 100 4.11 × 10-5 41.3 200 8.23 × 10-5 82.6 300 1.23 × 10-4 124 400 1.65 × 10-4 165 500 2.06 × 10-4 206 600 2.47 × 10-4 248 700 2.88 × 10-4 289 800 3.29 × 10-4 330 900 3.70 × 10-4 372 1000 4.11 × 10-4 413 2000 8.23 × 10-4 826 3000 0.00123 1240 4000 0.00165 1650 5000 0.00206 2060 6000 0.00247 2480 7000 0.00288 2890 8000 0.00329 3300 9000 0.00370 3720 1.00 × 104 0.00411 4130 2.00 × 104 0.00823 8260 3.00 × 104 0.0123 1.24 × 104 4.00 × 104 0.0165 1.65 × 104 5.00 × 104 0.0206 2.06 × 104 6.00 × 104 0.0247 2.48 × 104 7.00 × 104 0.0288 2.89 × 104 8.00 × 104 0.0329 3.30 × 104 9.00 × 104 0.0370 3.72 × 104 1.00 × 105 0.0411 4.13 × 104 2.00 × 105 0.0823 8.26 × 104 3.00 × 105 0.123 1.24 × 105 4.00 × 105 0.165 1.65 × 105 5.00 × 105 0.206 2.06 × 105 6.00 × 105 0.247 2.48 × 105 7.00 × 105 0.288 2.89 × 105 7.19 × 105 0.296 2.97 × 105
 Steel I Beam: W16 × 45 (Wide Flange 16 inch tall × 45 lbf/ft) L = 10.0 ft (lbf/ft) (in) (psi) 45.0 2.96 × 10-4 74.3 50.0 3.29 × 10-4 82.6 60.0 3.95 × 10-4 99.1 70.0 4.61 × 10-4 116 80.0 5.27 × 10-4 132 90.0 5.93 × 10-4 149 100 6.58 × 10-4 165 200 0.00132 330 300 0.00198 495 400 0.00263 661 500 0.00329 826 600 0.00395 991 700 0.00461 1160 800 0.00527 1320 900 0.00593 1490 1000 0.00658 1650 2000 0.0132 3300 3000 0.0198 4950 4000 0.0263 6610 5000 0.0329 8260 6000 0.0395 9910 7000 0.0461 1.16 × 104 8000 0.0527 1.32 × 104 9000 0.0593 1.49 × 104 1.00 × 104 0.0658 1.65 × 104 2.00 × 104 0.132 3.30 × 104 3.00 × 104 0.198 4.95 × 104 4.00 × 104 0.263 6.61 × 104 5.00 × 104 0.329 8.26 × 104 6.00 × 104 0.395 9.91 × 104 7.00 × 104 0.461 1.16 × 105 8.00 × 104 0.527 1.32 × 105 9.00 × 104 0.593 1.49 × 105 1.00 × 105 0.658 1.65 × 105 1.80 × 105 1.18 2.97 × 105
 Steel I Beam: W16 × 45 (Wide Flange 16 inch tall × 45 lbf/ft) L = 15.0 ft (lbf/ft) (in) (psi) 45.0 0.00150 167 50.0 0.00167 186 60.0 0.00200 223 70.0 0.00233 260 80.0 0.00267 297 90.0 0.00300 334 100 0.00333 372 200 0.00667 743 300 0.0100 1110 400 0.0133 1490 500 0.0167 1860 600 0.0200 2230 700 0.0233 2600 800 0.0267 2970 900 0.0300 3340 1000 0.0333 3720 2000 0.0667 7430 3000 0.100 1.11 × 104 4000 0.133 1.49 × 104 5000 0.167 1.86 × 104 6000 0.200 2.23 × 104 7000 0.233 2.60 × 104 8000 0.267 2.97 × 104 9000 0.300 3.34 × 104 1.00 × 104 0.333 3.72 × 104 2.00 × 104 0.667 7.43 × 104 3.00 × 104 1.00 1.11 × 105 4.00 × 104 1.33 1.49 × 105 5.00 × 104 1.67 1.86 × 105 6.00 × 104 2.00 2.23 × 105 7.00 × 104 2.33 2.60 × 105 7.99 × 104 2.66 2.97 × 105
 Steel I Beam: W16 × 45 (Wide Flange 16 inch tall × 45 lbf/ft) L = 20.0 ft (lbf/ft) (in) (psi) 45.0 0.00474 297 50.0 0.00527 330 60.0 0.00632 396 70.0 0.00737 462 80.0 0.00843 528 90.0 0.00948 595 100 0.0105 661 200 0.0211 1320 300 0.0316 1980 400 0.0421 2640 500 0.0527 3300 600 0.0632 3960 700 0.0737 4620 800 0.0843 5280 900 0.0948 5950 1000 0.105 6610 2000 0.211 1.32 × 104 3000 0.316 1.98 × 104 4000 0.421 2.64 × 104 5000 0.527 3.30 × 104 6000 0.632 3.96 × 104 7000 0.737 4.62 × 104 8000 0.843 5.28 × 104 9000 0.948 5.95 × 104 1.00 × 104 1.05 6.61 × 104 2.00 × 104 2.11 1.32 × 105 3.00 × 104 3.16 1.98 × 105 4.00 × 104 4.21 2.64 × 105 4.50 × 104 4.74 2.97 × 105
 Steel I Beam: W16 × 45 (Wide Flange 16 inch tall × 45 lbf/ft) L = 25.0 ft (lbf/ft) (in) (psi) 45.0 0.0116 464 50.0 0.0129 516 60.0 0.0154 619 70.0 0.0180 723 80.0 0.0206 826 90.0 0.0231 929 100 0.0257 1030 200 0.0514 2060 300 0.0771 3100 400 0.103 4130 500 0.129 5160 600 0.154 6190 700 0.180 7230 800 0.206 8260 900 0.231 9290 1000 0.257 1.03 × 104 2000 0.514 2.06 × 104 3000 0.771 3.10 × 104 4000 1.03 4.13 × 104 5000 1.29 5.16 × 104 6000 1.54 6.19 × 104 7000 1.80 7.23 × 104 8000 2.06 8.26 × 104 9000 2.31 9.29 × 104 1.00 × 104 2.57 1.03 × 105 2.00 × 104 5.14 2.06 × 105 2.88 × 104 7.40 2.97 × 105
 Steel I Beam: W16 × 45 (Wide Flange 16 inch tall × 45 lbf/ft) L = 30.0 ft (lbf/ft) (in) (psi) 45.0 0.0240 669 50.0 0.0267 743 60.0 0.0320 892 70.0 0.0373 1040 80.0 0.0427 1190 90.0 0.0480 1340 100 0.0533 1490 200 0.107 2970 300 0.160 4460 400 0.213 5950 500 0.267 7430 600 0.320 8920 700 0.373 1.04 × 104 800 0.427 1.19 × 104 900 0.480 1.34 × 104 1000 0.533 1.49 × 104 2000 1.07 2.97 × 104 3000 1.60 4.46 × 104 4000 2.13 5.95 × 104 5000 2.67 7.43 × 104 6000 3.20 8.92 × 104 7000 3.73 1.04 × 105 8000 4.27 1.19 × 105 9000 4.80 1.34 × 105 1.00 × 104 5.33 1.49 × 105 2.00 × 104 10.7 2.97 × 105
 Steel I Beam: W16 × 45 (Wide Flange 16 inch tall × 45 lbf/ft) L = 40.0 ft (lbf/ft) (in) (psi) 45.0 0.0758 1190 50.0 0.0843 1320 60.0 0.101 1590 70.0 0.118 1850 80.0 0.135 2110 90.0 0.152 2380 100 0.169 2640 200 0.337 5280 300 0.506 7930 400 0.674 1.06 × 104 500 0.843 1.32 × 104 600 1.01 1.59 × 104 700 1.18 1.85 × 104 800 1.35 2.11 × 104 900 1.52 2.38 × 104 1000 1.69 2.64 × 104 2000 3.37 5.28 × 104 3000 5.06 7.93 × 104 4000 6.74 1.06 × 105 5000 8.43 1.32 × 105 6000 10.1 1.59 × 105 7000 11.8 1.85 × 105 8000 13.5 2.11 × 105 9000 15.2 2.38 × 105 9570 16.1 2.53 × 105
 Steel I Beam: W16 × 45 (Wide Flange 16 inch tall × 45 lbf/ft) L = 50.0 ft (lbf/ft) (in) (psi) 45.0 0.185 1860 50.0 0.206 2060 60.0 0.247 2480 70.0 0.288 2890 80.0 0.329 3300 90.0 0.370 3720 100 0.411 4130 200 0.823 8260 300 1.23 1.24 × 104 400 1.65 1.65 × 104 500 2.06 2.06 × 104 600 2.47 2.48 × 104 700 2.88 2.89 × 104 800 3.29 3.30 × 104 900 3.70 3.72 × 104 1000 4.11 4.13 × 104 2000 8.23 8.26 × 104 3000 12.3 1.24 × 105 3920 16.1 1.62 × 105
 Steel I Beam: W16 × 45 (Wide Flange 16 inch tall × 45 lbf/ft) L = 60.0 ft (lbf/ft) (in) (psi) 45.0 0.384 2680 50.0 0.427 2970 60.0 0.512 3570 70.0 0.597 4160 80.0 0.683 4760 90.0 0.768 5350 100 0.853 5950 200 1.71 1.19 × 104 300 2.56 1.78 × 104 400 3.41 2.38 × 104 500 4.27 2.97 × 104 600 5.12 3.57 × 104 700 5.97 4.16 × 104 800 6.83 4.76 × 104 900 7.68 5.35 × 104 1000 8.53 5.95 × 104 1890 16.1 1.12 × 105
 Steel I Beam: W16 × 45 (Wide Flange 16 inch tall × 45 lbf/ft) L = 70.0 ft (lbf/ft) (in) (psi) 45.0 0.711 3640 50.0 0.790 4050 60.0 0.948 4860 70.0 1.11 5660 80.0 1.26 6470 90.0 1.42 7280 100 1.58 8090 200 3.16 1.62 × 104 300 4.74 2.43 × 104 400 6.32 3.24 × 104 500 7.90 4.05 × 104 600 9.48 4.86 × 104 700 11.1 5.66 × 104 800 12.6 6.47 × 104 900 14.2 7.28 × 104 1000 15.8 8.09 × 104 1020 16.1 8.26 × 104
 Steel I Beam: W16 × 45 (Wide Flange 16 inch tall × 45 lbf/ft) L = 80.0 ft (lbf/ft) (in) (psi) 45.0 1.21 4760 50.0 1.35 5280 60.0 1.62 6340 70.0 1.89 7400 80.0 2.16 8460 90.0 2.43 9510 100 2.70 1.06 × 104 200 5.39 2.11 × 104 300 8.09 3.17 × 104 400 10.8 4.23 × 104 500 13.5 5.28 × 104 598 16.1 6.32 × 104
 Steel I Beam: W16 × 45 (Wide Flange 16 inch tall × 45 lbf/ft) L = 90.0 ft (lbf/ft) (in) (psi) 45.0 1.94 6020 50.0 2.16 6690 60.0 2.59 8030 70.0 3.02 9360 80.0 3.46 1.07 × 104 90.0 3.89 1.20 × 104 100 4.32 1.34 × 104 200 8.64 2.68 × 104 300 13.0 4.01 × 104 373 16.1 5.00 × 104
 Steel I Beam: W16 × 45 (Wide Flange 16 inch tall × 45 lbf/ft) L = 100 ft (lbf/ft) (in) (psi) 45.0 2.96 7430 50.0 3.29 8260 60.0 3.95 9910 70.0 4.61 1.16 × 104 80.0 5.27 1.32 × 104 90.0 5.93 1.49 × 104 100 6.58 1.65 × 104 200 13.2 3.30 × 104 245 16.1 4.05 × 104
 Steel I Beam: W16 × 45 (Wide Flange 16 inch tall × 45 lbf/ft) L = 125 ft (lbf/ft) (in) (psi) 45.0 7.23 1.16 × 104 50.0 8.04 1.29 × 104 60.0 9.64 1.55 × 104 70.0 11.3 1.81 × 104 80.0 12.9 2.06 × 104 90.0 14.5 2.32 × 104 100 16.1 2.58 × 104 100 16.1 2.59 × 104
 Steel I Beam: W16 × 45 (Wide Flange 16 inch tall × 45 lbf/ft) L = 150 ft (lbf/ft) (in) (psi) 45.0 15.0 1.67 × 104 48.4 16.1 1.80 × 104