Materials Design Center Processes Unit Conversion Formulas Mathematics
 Calculators Discussion Forum Trade Publications Directory Service
3D Scanners

A white paper to assist in the evaluation of 3D scanning hardware solutions.

Essentials of Manufacturing

Information, coverage of important developments and expert commentary in manufacturing.

Learn the best principles to negotiate the salary you deserve!

Autonomous Vehicle Engineering

The No. 1 media source for those developing the next generation mobility solutions.

more free magazines
Glossary » Beams » Simply Supported » Uniformly Distributed Load » Two Equal Spans » S Section Steel I Beam » S18 × 54.7
S Section Steel I Beam | Single Span | Two Equal Spans | Three Equal Spans | Four Equal Spans

For a simply supported beam in two equal spans, we compute the displacement at the middle of each span and the maximum normal stress occuring at the center support of the beam.
The tabulated data listed in this page are calculated based on the area moment of inertia (Ixx = 804 in4) for the S18 × 54.7 S Section 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: S18 × 54.7 (S18 inch tall × 54.7 lbf/ft) L = 3.00 ft (lbf/ft) (in) (psi) 54.7 1.63 × 10-6 8.27 60.0 1.79 × 10-6 9.07 70.0 2.08 × 10-6 10.6 80.0 2.38 × 10-6 12.1 90.0 2.68 × 10-6 13.6 100 2.98 × 10-6 15.1 200 5.95 × 10-6 30.2 300 8.93 × 10-6 45.3 400 1.19 × 10-5 60.4 500 1.49 × 10-5 75.6 600 1.79 × 10-5 90.7 700 2.08 × 10-5 106 800 2.38 × 10-5 121 900 2.68 × 10-5 136 1000 2.98 × 10-5 151 2000 5.95 × 10-5 302 3000 8.93 × 10-5 453 4000 1.19 × 10-4 604 5000 1.49 × 10-4 756 6000 1.79 × 10-4 907 7000 2.08 × 10-4 1060 8000 2.38 × 10-4 1210 9000 2.68 × 10-4 1360 1.00 × 104 2.98 × 10-4 1510 2.00 × 104 5.95 × 10-4 3020 3.00 × 104 8.93 × 10-4 4530 4.00 × 104 0.00119 6040 5.00 × 104 0.00149 7560 6.00 × 104 0.00179 9070 7.00 × 104 0.00208 1.06 × 104 8.00 × 104 0.00238 1.21 × 104 9.00 × 104 0.00268 1.36 × 104 1.00 × 105 0.00298 1.51 × 104 2.00 × 105 0.00595 3.02 × 104 3.00 × 105 0.00893 4.53 × 104 4.00 × 105 0.0119 6.04 × 104 5.00 × 105 0.0149 7.56 × 104 6.00 × 105 0.0179 9.07 × 104 7.00 × 105 0.0208 1.06 × 105 8.00 × 105 0.0238 1.21 × 105 9.00 × 105 0.0268 1.36 × 105 1.00 × 106 0.0298 1.51 × 105 1.97 × 106 0.0585 2.97 × 105
 Steel I Beam: S18 × 54.7 (S18 inch tall × 54.7 lbf/ft) L = 5.00 ft (lbf/ft) (in) (psi) 54.7 1.26 × 10-5 23.0 60.0 1.38 × 10-5 25.2 70.0 1.61 × 10-5 29.4 80.0 1.84 × 10-5 33.6 90.0 2.07 × 10-5 37.8 100 2.30 × 10-5 42.0 200 4.59 × 10-5 84.0 300 6.89 × 10-5 126 400 9.19 × 10-5 168 500 1.15 × 10-4 210 600 1.38 × 10-4 252 700 1.61 × 10-4 294 800 1.84 × 10-4 336 900 2.07 × 10-4 378 1000 2.30 × 10-4 420 2000 4.59 × 10-4 840 3000 6.89 × 10-4 1260 4000 9.19 × 10-4 1680 5000 0.00115 2100 6000 0.00138 2520 7000 0.00161 2940 8000 0.00184 3360 9000 0.00207 3780 1.00 × 104 0.00230 4200 2.00 × 104 0.00459 8400 3.00 × 104 0.00689 1.26 × 104 4.00 × 104 0.00919 1.68 × 104 5.00 × 104 0.0115 2.10 × 104 6.00 × 104 0.0138 2.52 × 104 7.00 × 104 0.0161 2.94 × 104 8.00 × 104 0.0184 3.36 × 104 9.00 × 104 0.0207 3.78 × 104 1.00 × 105 0.0230 4.20 × 104 2.00 × 105 0.0459 8.40 × 104 3.00 × 105 0.0689 1.26 × 105 4.00 × 105 0.0919 1.68 × 105 5.00 × 105 0.115 2.10 × 105 6.00 × 105 0.138 2.52 × 105 7.00 × 105 0.161 2.94 × 105 7.08 × 105 0.163 2.97 × 105
 Steel I Beam: S18 × 54.7 (S18 inch tall × 54.7 lbf/ft) L = 10.0 ft (lbf/ft) (in) (psi) 54.7 2.01 × 10-4 91.8 60.0 2.21 × 10-4 101 70.0 2.57 × 10-4 118 80.0 2.94 × 10-4 134 90.0 3.31 × 10-4 151 100 3.68 × 10-4 168 200 7.35 × 10-4 336 300 0.00110 504 400 0.00147 672 500 0.00184 840 600 0.00221 1010 700 0.00257 1180 800 0.00294 1340 900 0.00331 1510 1000 0.00368 1680 2000 0.00735 3360 3000 0.0110 5040 4000 0.0147 6720 5000 0.0184 8400 6000 0.0221 1.01 × 104 7000 0.0257 1.18 × 104 8000 0.0294 1.34 × 104 9000 0.0331 1.51 × 104 1.00 × 104 0.0368 1.68 × 104 2.00 × 104 0.0735 3.36 × 104 3.00 × 104 0.110 5.04 × 104 4.00 × 104 0.147 6.72 × 104 5.00 × 104 0.184 8.40 × 104 6.00 × 104 0.221 1.01 × 105 7.00 × 104 0.257 1.18 × 105 8.00 × 104 0.294 1.34 × 105 9.00 × 104 0.331 1.51 × 105 1.00 × 105 0.368 1.68 × 105 1.77 × 105 0.650 2.97 × 105
 Steel I Beam: S18 × 54.7 (S18 inch tall × 54.7 lbf/ft) L = 15.0 ft (lbf/ft) (in) (psi) 54.7 0.00102 207 60.0 0.00112 227 70.0 0.00130 264 80.0 0.00149 302 90.0 0.00167 340 100 0.00186 378 200 0.00372 756 300 0.00558 1130 400 0.00744 1510 500 0.00930 1890 600 0.0112 2270 700 0.0130 2640 800 0.0149 3020 900 0.0167 3400 1000 0.0186 3780 2000 0.0372 7560 3000 0.0558 1.13 × 104 4000 0.0744 1.51 × 104 5000 0.0930 1.89 × 104 6000 0.112 2.27 × 104 7000 0.130 2.64 × 104 8000 0.149 3.02 × 104 9000 0.167 3.40 × 104 1.00 × 104 0.186 3.78 × 104 2.00 × 104 0.372 7.56 × 104 3.00 × 104 0.558 1.13 × 105 4.00 × 104 0.744 1.51 × 105 5.00 × 104 0.930 1.89 × 105 6.00 × 104 1.12 2.27 × 105 7.00 × 104 1.30 2.64 × 105 7.86 × 104 1.46 2.97 × 105
 Steel I Beam: S18 × 54.7 (S18 inch tall × 54.7 lbf/ft) L = 20.0 ft (lbf/ft) (in) (psi) 54.7 0.00322 367 60.0 0.00353 403 70.0 0.00412 470 80.0 0.00470 537 90.0 0.00529 604 100 0.00588 672 200 0.0118 1340 300 0.0176 2010 400 0.0235 2690 500 0.0294 3360 600 0.0353 4030 700 0.0412 4700 800 0.0470 5370 900 0.0529 6040 1000 0.0588 6720 2000 0.118 1.34 × 104 3000 0.176 2.01 × 104 4000 0.235 2.69 × 104 5000 0.294 3.36 × 104 6000 0.353 4.03 × 104 7000 0.412 4.70 × 104 8000 0.470 5.37 × 104 9000 0.529 6.04 × 104 1.00 × 104 0.588 6.72 × 104 2.00 × 104 1.18 1.34 × 105 3.00 × 104 1.76 2.01 × 105 4.00 × 104 2.35 2.69 × 105 4.42 × 104 2.60 2.97 × 105
 Steel I Beam: S18 × 54.7 (S18 inch tall × 54.7 lbf/ft) L = 25.0 ft (lbf/ft) (in) (psi) 54.7 0.00785 574 60.0 0.00861 630 70.0 0.0100 735 80.0 0.0115 840 90.0 0.0129 944 100 0.0144 1050 200 0.0287 2100 300 0.0431 3150 400 0.0574 4200 500 0.0718 5250 600 0.0861 6300 700 0.100 7350 800 0.115 8400 900 0.129 9440 1000 0.144 1.05 × 104 2000 0.287 2.10 × 104 3000 0.431 3.15 × 104 4000 0.574 4.20 × 104 5000 0.718 5.25 × 104 6000 0.861 6.30 × 104 7000 1.00 7.35 × 104 8000 1.15 8.40 × 104 9000 1.29 9.44 × 104 1.00 × 104 1.44 1.05 × 105 2.00 × 104 2.87 2.10 × 105 2.83 × 104 4.06 2.97 × 105
 Steel I Beam: S18 × 54.7 (S18 inch tall × 54.7 lbf/ft) L = 30.0 ft (lbf/ft) (in) (psi) 54.7 0.0163 827 60.0 0.0179 907 70.0 0.0208 1060 80.0 0.0238 1210 90.0 0.0268 1360 100 0.0298 1510 200 0.0595 3020 300 0.0893 4530 400 0.119 6040 500 0.149 7560 600 0.179 9070 700 0.208 1.06 × 104 800 0.238 1.21 × 104 900 0.268 1.36 × 104 1000 0.298 1.51 × 104 2000 0.595 3.02 × 104 3000 0.893 4.53 × 104 4000 1.19 6.04 × 104 5000 1.49 7.56 × 104 6000 1.79 9.07 × 104 7000 2.08 1.06 × 105 8000 2.38 1.21 × 105 9000 2.68 1.36 × 105 1.00 × 104 2.98 1.51 × 105 1.97 × 104 5.85 2.97 × 105
 Steel I Beam: S18 × 54.7 (S18 inch tall × 54.7 lbf/ft) L = 40.0 ft (lbf/ft) (in) (psi) 54.7 0.0515 1470 60.0 0.0565 1610 70.0 0.0659 1880 80.0 0.0753 2150 90.0 0.0847 2420 100 0.0941 2690 200 0.188 5370 300 0.282 8060 400 0.376 1.07 × 104 500 0.470 1.34 × 104 600 0.565 1.61 × 104 700 0.659 1.88 × 104 800 0.753 2.15 × 104 900 0.847 2.42 × 104 1000 0.941 2.69 × 104 2000 1.88 5.37 × 104 3000 2.82 8.06 × 104 4000 3.76 1.07 × 105 5000 4.70 1.34 × 105 6000 5.65 1.61 × 105 7000 6.59 1.88 × 105 8000 7.53 2.15 × 105 9000 8.47 2.42 × 105 1.00 × 104 9.41 2.69 × 105 1.11 × 104 10.4 2.97 × 105
 Steel I Beam: S18 × 54.7 (S18 inch tall × 54.7 lbf/ft) L = 50.0 ft (lbf/ft) (in) (psi) 54.7 0.126 2300 60.0 0.138 2520 70.0 0.161 2940 80.0 0.184 3360 90.0 0.207 3780 100 0.230 4200 200 0.459 8400 300 0.689 1.26 × 104 400 0.919 1.68 × 104 500 1.15 2.10 × 104 600 1.38 2.52 × 104 700 1.61 2.94 × 104 800 1.84 3.36 × 104 900 2.07 3.78 × 104 1000 2.30 4.20 × 104 2000 4.59 8.40 × 104 3000 6.89 1.26 × 105 4000 9.19 1.68 × 105 5000 11.5 2.10 × 105 6000 13.8 2.52 × 105 7000 16.1 2.94 × 105 7080 16.3 2.97 × 105
 Steel I Beam: S18 × 54.7 (S18 inch tall × 54.7 lbf/ft) L = 60.0 ft (lbf/ft) (in) (psi) 54.7 0.261 3310 60.0 0.286 3630 70.0 0.333 4230 80.0 0.381 4840 90.0 0.429 5440 100 0.476 6040 200 0.953 1.21 × 104 300 1.43 1.81 × 104 400 1.91 2.42 × 104 500 2.38 3.02 × 104 600 2.86 3.63 × 104 700 3.33 4.23 × 104 800 3.81 4.84 × 104 900 4.29 5.44 × 104 1000 4.76 6.04 × 104 2000 9.53 1.21 × 105 3000 14.3 1.81 × 105 3780 18.0 2.28 × 105
 Steel I Beam: S18 × 54.7 (S18 inch tall × 54.7 lbf/ft) L = 70.0 ft (lbf/ft) (in) (psi) 54.7 0.483 4500 60.0 0.529 4940 70.0 0.618 5760 80.0 0.706 6580 90.0 0.794 7400 100 0.882 8230 200 1.76 1.65 × 104 300 2.65 2.47 × 104 400 3.53 3.29 × 104 500 4.41 4.11 × 104 600 5.29 4.94 × 104 700 6.18 5.76 × 104 800 7.06 6.58 × 104 900 7.94 7.40 × 104 1000 8.82 8.23 × 104 2000 17.6 1.65 × 105 2040 18.0 1.68 × 105
 Steel I Beam: S18 × 54.7 (S18 inch tall × 54.7 lbf/ft) L = 80.0 ft (lbf/ft) (in) (psi) 54.7 0.823 5880 60.0 0.903 6450 70.0 1.05 7520 80.0 1.20 8600 90.0 1.35 9670 100 1.51 1.07 × 104 200 3.01 2.15 × 104 300 4.52 3.22 × 104 400 6.02 4.30 × 104 500 7.53 5.37 × 104 600 9.03 6.45 × 104 700 10.5 7.52 × 104 800 12.0 8.60 × 104 900 13.5 9.67 × 104 1000 15.1 1.07 × 105 1200 18.0 1.28 × 105
 Steel I Beam: S18 × 54.7 (S18 inch tall × 54.7 lbf/ft) L = 90.0 ft (lbf/ft) (in) (psi) 54.7 1.32 7440 60.0 1.45 8160 70.0 1.69 9520 80.0 1.93 1.09 × 104 90.0 2.17 1.22 × 104 100 2.41 1.36 × 104 200 4.82 2.72 × 104 300 7.23 4.08 × 104 400 9.65 5.44 × 104 500 12.1 6.80 × 104 600 14.5 8.16 × 104 700 16.9 9.52 × 104 746 18.0 1.02 × 105
 Steel I Beam: S18 × 54.7 (S18 inch tall × 54.7 lbf/ft) L = 100 ft (lbf/ft) (in) (psi) 54.7 2.01 9180 60.0 2.21 1.01 × 104 70.0 2.57 1.18 × 104 80.0 2.94 1.34 × 104 90.0 3.31 1.51 × 104 100 3.68 1.68 × 104 200 7.35 3.36 × 104 300 11.0 5.04 × 104 400 14.7 6.72 × 104 490 18.0 8.22 × 104
 Steel I Beam: S18 × 54.7 (S18 inch tall × 54.7 lbf/ft) L = 125 ft (lbf/ft) (in) (psi) 54.7 4.91 1.44 × 104 60.0 5.38 1.57 × 104 70.0 6.28 1.84 × 104 80.0 7.18 2.10 × 104 90.0 8.08 2.36 × 104 100 8.97 2.62 × 104 200 17.9 5.25 × 104 201 18.0 5.26 × 104
 Steel I Beam: S18 × 54.7 (S18 inch tall × 54.7 lbf/ft) L = 150 ft (lbf/ft) (in) (psi) 54.7 10.2 2.07 × 104 60.0 11.2 2.27 × 104 70.0 13.0 2.64 × 104 80.0 14.9 3.02 × 104 90.0 16.7 3.40 × 104 96.7 18.0 3.65 × 104