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Glossary » Beams » Simply Supported » Uniformly Distributed Load » Four Equal Spans » S Section Steel I Beam » S6 × 17.25
S Section Steel I Beam | Single Span | Two Equal Spans | Three Equal Spans | Four Equal Spans

For a simply supported beam in four equal spans, we compute the displacement at the middle of the first and fourth spans, and the maximum normal stress occuring at the second and fourth supports of the beam.
The tabulated data listed in this page are calculated based on the area moment of inertia (Ixx = 26.3 in4) for the S6 × 17.25 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: S6 × 17.25 (S6 inch tall × 17.25 lbf/ft) L = 3.00 ft (lbf/ft) (in) (psi) 17.3 1.90 × 10-5 22.8 20.0 2.20 × 10-5 26.4 30.0 3.30 × 10-5 39.6 40.0 4.40 × 10-5 52.8 50.0 5.50 × 10-5 66.0 60.0 6.60 × 10-5 79.2 70.0 7.71 × 10-5 92.4 80.0 8.81 × 10-5 106 90.0 9.91 × 10-5 119 100 1.10 × 10-4 132 200 2.20 × 10-4 264 300 3.30 × 10-4 396 400 4.40 × 10-4 528 500 5.50 × 10-4 660 600 6.60 × 10-4 792 700 7.71 × 10-4 924 800 8.81 × 10-4 1060 900 9.91 × 10-4 1190 1000 0.00110 1320 2000 0.00220 2640 3000 0.00330 3960 4000 0.00440 5280 5000 0.00550 6600 6000 0.00660 7920 7000 0.00771 9240 8000 0.00881 1.06 × 104 9000 0.00991 1.19 × 104 1.00 × 104 0.0110 1.32 × 104 2.00 × 104 0.0220 2.64 × 104 3.00 × 104 0.0330 3.96 × 104 4.00 × 104 0.0440 5.28 × 104 5.00 × 104 0.0550 6.60 × 104 6.00 × 104 0.0660 7.92 × 104 7.00 × 104 0.0771 9.24 × 104 8.00 × 104 0.0881 1.06 × 105 9.00 × 104 0.0991 1.19 × 105 1.00 × 105 0.110 1.32 × 105 2.00 × 105 0.220 2.64 × 105 2.25 × 105 0.248 2.97 × 105
 Steel I Beam: S6 × 17.25 (S6 inch tall × 17.25 lbf/ft) L = 5.00 ft (lbf/ft) (in) (psi) 17.3 1.47 × 10-4 63.2 20.0 1.70 × 10-4 73.3 30.0 2.55 × 10-4 110 40.0 3.40 × 10-4 147 50.0 4.25 × 10-4 183 60.0 5.10 × 10-4 220 70.0 5.95 × 10-4 257 80.0 6.80 × 10-4 293 90.0 7.64 × 10-4 330 100 8.49 × 10-4 367 200 0.00170 733 300 0.00255 1100 400 0.00340 1470 500 0.00425 1830 600 0.00510 2200 700 0.00595 2570 800 0.00680 2930 900 0.00764 3300 1000 0.00849 3670 2000 0.0170 7330 3000 0.0255 1.10 × 104 4000 0.0340 1.47 × 104 5000 0.0425 1.83 × 104 6000 0.0510 2.20 × 104 7000 0.0595 2.57 × 104 8000 0.0680 2.93 × 104 9000 0.0764 3.30 × 104 1.00 × 104 0.0849 3.67 × 104 2.00 × 104 0.170 7.33 × 104 3.00 × 104 0.255 1.10 × 105 4.00 × 104 0.340 1.47 × 105 5.00 × 104 0.425 1.83 × 105 6.00 × 104 0.510 2.20 × 105 7.00 × 104 0.595 2.57 × 105 8.00 × 104 0.680 2.93 × 105 8.10 × 104 0.688 2.97 × 105
 Steel I Beam: S6 × 17.25 (S6 inch tall × 17.25 lbf/ft) L = 10.0 ft (lbf/ft) (in) (psi) 17.3 0.00234 253 20.0 0.00272 293 30.0 0.00408 440 40.0 0.00544 586 50.0 0.00680 733 60.0 0.00815 880 70.0 0.00951 1030 80.0 0.0109 1170 90.0 0.0122 1320 100 0.0136 1470 200 0.0272 2930 300 0.0408 4400 400 0.0544 5860 500 0.0680 7330 600 0.0815 8800 700 0.0951 1.03 × 104 800 0.109 1.17 × 104 900 0.122 1.32 × 104 1000 0.136 1.47 × 104 2000 0.272 2.93 × 104 3000 0.408 4.40 × 104 4000 0.544 5.86 × 104 5000 0.680 7.33 × 104 6000 0.815 8.80 × 104 7000 0.951 1.03 × 105 8000 1.09 1.17 × 105 9000 1.22 1.32 × 105 1.00 × 104 1.36 1.47 × 105 2.00 × 104 2.72 2.93 × 105 2.03 × 104 2.75 2.97 × 105
 Steel I Beam: S6 × 17.25 (S6 inch tall × 17.25 lbf/ft) L = 15.0 ft (lbf/ft) (in) (psi) 17.3 0.0119 569 20.0 0.0138 660 30.0 0.0206 990 40.0 0.0275 1320 50.0 0.0344 1650 60.0 0.0413 1980 70.0 0.0482 2310 80.0 0.0550 2640 90.0 0.0619 2970 100 0.0688 3300 200 0.138 6600 300 0.206 9900 400 0.275 1.32 × 104 500 0.344 1.65 × 104 600 0.413 1.98 × 104 700 0.482 2.31 × 104 800 0.550 2.64 × 104 900 0.619 2.97 × 104 1000 0.688 3.30 × 104 2000 1.38 6.60 × 104 3000 2.06 9.90 × 104 4000 2.75 1.32 × 105 5000 3.44 1.65 × 105 6000 4.13 1.98 × 105 7000 4.82 2.31 × 105 8000 5.50 2.64 × 105 8720 6.00 2.88 × 105
 Steel I Beam: S6 × 17.25 (S6 inch tall × 17.25 lbf/ft) L = 20.0 ft (lbf/ft) (in) (psi) 17.3 0.0375 1010 20.0 0.0435 1170 30.0 0.0652 1760 40.0 0.0870 2350 50.0 0.109 2930 60.0 0.130 3520 70.0 0.152 4100 80.0 0.174 4690 90.0 0.196 5280 100 0.217 5860 200 0.435 1.17 × 104 300 0.652 1.76 × 104 400 0.870 2.35 × 104 500 1.09 2.93 × 104 600 1.30 3.52 × 104 700 1.52 4.10 × 104 800 1.74 4.69 × 104 900 1.96 5.28 × 104 1000 2.17 5.86 × 104 2000 4.35 1.17 × 105 2760 6.00 1.62 × 105
 Steel I Beam: S6 × 17.25 (S6 inch tall × 17.25 lbf/ft) L = 25.0 ft (lbf/ft) (in) (psi) 17.3 0.0916 1580 20.0 0.106 1830 30.0 0.159 2750 40.0 0.212 3670 50.0 0.265 4580 60.0 0.319 5500 70.0 0.372 6410 80.0 0.425 7330 90.0 0.478 8250 100 0.531 9160 200 1.06 1.83 × 104 300 1.59 2.75 × 104 400 2.12 3.67 × 104 500 2.65 4.58 × 104 600 3.19 5.50 × 104 700 3.72 6.41 × 104 800 4.25 7.33 × 104 900 4.78 8.25 × 104 1000 5.31 9.16 × 104 1130 6.00 1.04 × 105
 Steel I Beam: S6 × 17.25 (S6 inch tall × 17.25 lbf/ft) L = 30.0 ft (lbf/ft) (in) (psi) 17.3 0.190 2280 20.0 0.220 2640 30.0 0.330 3960 40.0 0.440 5280 50.0 0.550 6600 60.0 0.660 7920 70.0 0.771 9240 80.0 0.881 1.06 × 104 90.0 0.991 1.19 × 104 100 1.10 1.32 × 104 200 2.20 2.64 × 104 300 3.30 3.96 × 104 400 4.40 5.28 × 104 500 5.50 6.60 × 104 545 6.00 7.19 × 104
 Steel I Beam: S6 × 17.25 (S6 inch tall × 17.25 lbf/ft) L = 40.0 ft (lbf/ft) (in) (psi) 17.3 0.600 4050 20.0 0.696 4690 30.0 1.04 7040 40.0 1.39 9380 50.0 1.74 1.17 × 104 60.0 2.09 1.41 × 104 70.0 2.44 1.64 × 104 80.0 2.78 1.88 × 104 90.0 3.13 2.11 × 104 100 3.48 2.35 × 104 172 6.00 4.05 × 104
 Steel I Beam: S6 × 17.25 (S6 inch tall × 17.25 lbf/ft) L = 50.0 ft (lbf/ft) (in) (psi) 17.3 1.47 6320 20.0 1.70 7330 30.0 2.55 1.10 × 104 40.0 3.40 1.47 × 104 50.0 4.25 1.83 × 104 60.0 5.10 2.20 × 104 70.0 5.95 2.57 × 104 70.6 6.00 2.59 × 104
 Steel I Beam: S6 × 17.25 (S6 inch tall × 17.25 lbf/ft) L = 60.0 ft (lbf/ft) (in) (psi) 17.3 3.04 9100 20.0 3.52 1.06 × 104 30.0 5.28 1.58 × 104 34.1 6.00 1.80 × 104
 Steel I Beam: S6 × 17.25 (S6 inch tall × 17.25 lbf/ft) L = 70.0 ft (lbf/ft) (in) (psi) 17.3 5.63 1.24 × 104 18.4 6.00 1.32 × 104
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