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Glossary » Beams » Simply Supported » Uniformly Distributed Load » Two Equal Spans » S Section Steel I Beam » S7 × 15.3
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 = 36.7 in4) for the S7 × 15.3 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: S7 × 15.3 (S7 inch tall × 15.3 lbf/ft) L = 3.00 ft (lbf/ft) (in) (psi) 15.3 9.98 × 10-6 19.7 20.0 1.30 × 10-5 25.7 30.0 1.96 × 10-5 38.6 40.0 2.61 × 10-5 51.5 50.0 3.26 × 10-5 64.4 60.0 3.91 × 10-5 77.2 70.0 4.57 × 10-5 90.1 80.0 5.22 × 10-5 103 90.0 5.87 × 10-5 116 100 6.52 × 10-5 129 200 1.30 × 10-4 257 300 1.96 × 10-4 386 400 2.61 × 10-4 515 500 3.26 × 10-4 644 600 3.91 × 10-4 772 700 4.57 × 10-4 901 800 5.22 × 10-4 1030 900 5.87 × 10-4 1160 1000 6.52 × 10-4 1290 2000 0.00130 2570 3000 0.00196 3860 4000 0.00261 5150 5000 0.00326 6440 6000 0.00391 7720 7000 0.00457 9010 8000 0.00522 1.03 × 104 9000 0.00587 1.16 × 104 1.00 × 104 0.00652 1.29 × 104 2.00 × 104 0.0130 2.57 × 104 3.00 × 104 0.0196 3.86 × 104 4.00 × 104 0.0261 5.15 × 104 5.00 × 104 0.0326 6.44 × 104 6.00 × 104 0.0391 7.72 × 104 7.00 × 104 0.0457 9.01 × 104 8.00 × 104 0.0522 1.03 × 105 9.00 × 104 0.0587 1.16 × 105 1.00 × 105 0.0652 1.29 × 105 2.00 × 105 0.130 2.57 × 105 2.31 × 105 0.150 2.97 × 105
 Steel I Beam: S7 × 15.3 (S7 inch tall × 15.3 lbf/ft) L = 5.00 ft (lbf/ft) (in) (psi) 15.3 7.70 × 10-5 54.7 20.0 1.01 × 10-4 71.5 30.0 1.51 × 10-4 107 40.0 2.01 × 10-4 143 50.0 2.52 × 10-4 179 60.0 3.02 × 10-4 215 70.0 3.52 × 10-4 250 80.0 4.03 × 10-4 286 90.0 4.53 × 10-4 322 100 5.03 × 10-4 358 200 0.00101 715 300 0.00151 1070 400 0.00201 1430 500 0.00252 1790 600 0.00302 2150 700 0.00352 2500 800 0.00403 2860 900 0.00453 3220 1000 0.00503 3580 2000 0.0101 7150 3000 0.0151 1.07 × 104 4000 0.0201 1.43 × 104 5000 0.0252 1.79 × 104 6000 0.0302 2.15 × 104 7000 0.0352 2.50 × 104 8000 0.0403 2.86 × 104 9000 0.0453 3.22 × 104 1.00 × 104 0.0503 3.58 × 104 2.00 × 104 0.101 7.15 × 104 3.00 × 104 0.151 1.07 × 105 4.00 × 104 0.201 1.43 × 105 5.00 × 104 0.252 1.79 × 105 6.00 × 104 0.302 2.15 × 105 7.00 × 104 0.352 2.50 × 105 8.00 × 104 0.403 2.86 × 105 8.31 × 104 0.418 2.97 × 105
 Steel I Beam: S7 × 15.3 (S7 inch tall × 15.3 lbf/ft) L = 10.0 ft (lbf/ft) (in) (psi) 15.3 0.00123 219 20.0 0.00161 286 30.0 0.00242 429 40.0 0.00322 572 50.0 0.00403 715 60.0 0.00483 858 70.0 0.00564 1000 80.0 0.00644 1140 90.0 0.00725 1290 100 0.00805 1430 200 0.0161 2860 300 0.0242 4290 400 0.0322 5720 500 0.0403 7150 600 0.0483 8580 700 0.0564 1.00 × 104 800 0.0644 1.14 × 104 900 0.0725 1.29 × 104 1000 0.0805 1.43 × 104 2000 0.161 2.86 × 104 3000 0.242 4.29 × 104 4000 0.322 5.72 × 104 5000 0.403 7.15 × 104 6000 0.483 8.58 × 104 7000 0.564 1.00 × 105 8000 0.644 1.14 × 105 9000 0.725 1.29 × 105 1.00 × 104 0.805 1.43 × 105 2.00 × 104 1.61 2.86 × 105 2.08 × 104 1.67 2.97 × 105
 Steel I Beam: S7 × 15.3 (S7 inch tall × 15.3 lbf/ft) L = 15.0 ft (lbf/ft) (in) (psi) 15.3 0.00624 492 20.0 0.00815 644 30.0 0.0122 966 40.0 0.0163 1290 50.0 0.0204 1610 60.0 0.0245 1930 70.0 0.0285 2250 80.0 0.0326 2570 90.0 0.0367 2900 100 0.0408 3220 200 0.0815 6440 300 0.122 9660 400 0.163 1.29 × 104 500 0.204 1.61 × 104 600 0.245 1.93 × 104 700 0.285 2.25 × 104 800 0.326 2.57 × 104 900 0.367 2.90 × 104 1000 0.408 3.22 × 104 2000 0.815 6.44 × 104 3000 1.22 9.66 × 104 4000 1.63 1.29 × 105 5000 2.04 1.61 × 105 6000 2.45 1.93 × 105 7000 2.85 2.25 × 105 8000 3.26 2.57 × 105 9000 3.67 2.90 × 105 9230 3.76 2.97 × 105
 Steel I Beam: S7 × 15.3 (S7 inch tall × 15.3 lbf/ft) L = 20.0 ft (lbf/ft) (in) (psi) 15.3 0.0197 875 20.0 0.0258 1140 30.0 0.0386 1720 40.0 0.0515 2290 50.0 0.0644 2860 60.0 0.0773 3430 70.0 0.0902 4010 80.0 0.103 4580 90.0 0.116 5150 100 0.129 5720 200 0.258 1.14 × 104 300 0.386 1.72 × 104 400 0.515 2.29 × 104 500 0.644 2.86 × 104 600 0.773 3.43 × 104 700 0.902 4.01 × 104 800 1.03 4.58 × 104 900 1.16 5.15 × 104 1000 1.29 5.72 × 104 2000 2.58 1.14 × 105 3000 3.86 1.72 × 105 4000 5.15 2.29 × 105 5000 6.44 2.86 × 105 5190 6.69 2.97 × 105
 Steel I Beam: S7 × 15.3 (S7 inch tall × 15.3 lbf/ft) L = 25.0 ft (lbf/ft) (in) (psi) 15.3 0.0481 1370 20.0 0.0629 1790 30.0 0.0944 2680 40.0 0.126 3580 50.0 0.157 4470 60.0 0.189 5360 70.0 0.220 6260 80.0 0.252 7150 90.0 0.283 8050 100 0.315 8940 200 0.629 1.79 × 104 300 0.944 2.68 × 104 400 1.26 3.58 × 104 500 1.57 4.47 × 104 600 1.89 5.36 × 104 700 2.20 6.26 × 104 800 2.52 7.15 × 104 900 2.83 8.05 × 104 1000 3.15 8.94 × 104 2000 6.29 1.79 × 105 2230 7.00 1.99 × 105
 Steel I Beam: S7 × 15.3 (S7 inch tall × 15.3 lbf/ft) L = 30.0 ft (lbf/ft) (in) (psi) 15.3 0.0998 1970 20.0 0.130 2570 30.0 0.196 3860 40.0 0.261 5150 50.0 0.326 6440 60.0 0.391 7720 70.0 0.457 9010 80.0 0.522 1.03 × 104 90.0 0.587 1.16 × 104 100 0.652 1.29 × 104 200 1.30 2.57 × 104 300 1.96 3.86 × 104 400 2.61 5.15 × 104 500 3.26 6.44 × 104 600 3.91 7.72 × 104 700 4.57 9.01 × 104 800 5.22 1.03 × 105 900 5.87 1.16 × 105 1000 6.52 1.29 × 105 1070 7.00 1.38 × 105
 Steel I Beam: S7 × 15.3 (S7 inch tall × 15.3 lbf/ft) L = 40.0 ft (lbf/ft) (in) (psi) 15.3 0.315 3500 20.0 0.412 4580 30.0 0.618 6870 40.0 0.824 9160 50.0 1.03 1.14 × 104 60.0 1.24 1.37 × 104 70.0 1.44 1.60 × 104 80.0 1.65 1.83 × 104 90.0 1.86 2.06 × 104 100 2.06 2.29 × 104 200 4.12 4.58 × 104 300 6.18 6.87 × 104 340 7.00 7.77 × 104
 Steel I Beam: S7 × 15.3 (S7 inch tall × 15.3 lbf/ft) L = 50.0 ft (lbf/ft) (in) (psi) 15.3 0.770 5470 20.0 1.01 7150 30.0 1.51 1.07 × 104 40.0 2.01 1.43 × 104 50.0 2.52 1.79 × 104 60.0 3.02 2.15 × 104 70.0 3.52 2.50 × 104 80.0 4.03 2.86 × 104 90.0 4.53 3.22 × 104 100 5.03 3.58 × 104 139 7.00 4.97 × 104
 Steel I Beam: S7 × 15.3 (S7 inch tall × 15.3 lbf/ft) L = 60.0 ft (lbf/ft) (in) (psi) 15.3 1.60 7880 20.0 2.09 1.03 × 104 30.0 3.13 1.54 × 104 40.0 4.17 2.06 × 104 50.0 5.22 2.57 × 104 60.0 6.26 3.09 × 104 67.1 7.00 3.45 × 104
 Steel I Beam: S7 × 15.3 (S7 inch tall × 15.3 lbf/ft) L = 70.0 ft (lbf/ft) (in) (psi) 15.3 2.96 1.07 × 104 20.0 3.87 1.40 × 104 30.0 5.80 2.10 × 104 36.2 7.00 2.54 × 104
 Steel I Beam: S7 × 15.3 (S7 inch tall × 15.3 lbf/ft) L = 80.0 ft (lbf/ft) (in) (psi) 15.3 5.05 1.40 × 104 20.0 6.60 1.83 × 104 21.2 7.00 1.94 × 104
Related Pages
Injection Molding Design Guide

Guide for high quality and cost-effective plastic injection molding.

Essentials of Manufacturing

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

3D Scanners

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

Mechanical Engineers Outlook

Guide for those interested in becoming a mechanical engineer. Includes qualifications, pay, and job duties.