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S Section Steel I Beam: S8 × 23
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Glossary » Beams » Simply Supported » Uniformly Distributed Load » Two Equal Spans » S Section Steel I Beam » S8 × 23
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 w_mid and the maximum normal stress stress_max 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 = 64.9 in4) for the S8 × 23 S Section Steel I Beam and the typical Young's modulus (E = 3.046 × 107 psi) of steels. Note that the typical yielding stress Yield 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.
L = 3 ft
L = 5 ft
L = 10 ft
L = 15 ft
L = 20 ft
L = 25 ft
L = 30 ft
L = 40 ft
L = 50 ft
L = 60 ft
L = 70 ft
L = 80 ft
L = 90 ft
  
Steel I Beam: S8 × 23 (S8 inch tall × 23 lbf/ft)
L = 3.00 ft
P (lbf/ft) w_max (in) stress_max (psi)
23.0 8.48 × 10-6 19.1
30.0 1.11 × 10-5 25.0
40.0 1.48 × 10-5 33.3
50.0 1.84 × 10-5 41.6
60.0 2.21 × 10-5 49.9
70.0 2.58 × 10-5 58.2
80.0 2.95 × 10-5 66.6
90.0 3.32 × 10-5 74.9
100 3.69 × 10-5 83.2
200 7.38 × 10-5 166
300 1.11 × 10-4 250
400 1.48 × 10-4 333
500 1.84 × 10-4 416
600 2.21 × 10-4 499
700 2.58 × 10-4 582
800 2.95 × 10-4 666
900 3.32 × 10-4 749
1000 3.69 × 10-4 832
2000 7.38 × 10-4 1660
3000 0.00111 2500
4000 0.00148 3330
5000 0.00184 4160
6000 0.00221 4990
7000 0.00258 5820
8000 0.00295 6660
9000 0.00332 7490
1.00 × 104 0.00369 8320
2.00 × 104 0.00738 1.66 × 104
3.00 × 104 0.0111 2.50 × 104
4.00 × 104 0.0148 3.33 × 104
5.00 × 104 0.0184 4.16 × 104
6.00 × 104 0.0221 4.99 × 104
7.00 × 104 0.0258 5.82 × 104
8.00 × 104 0.0295 6.66 × 104
9.00 × 104 0.0332 7.49 × 104
1.00 × 105 0.0369 8.32 × 104
2.00 × 105 0.0738 1.66 × 105
3.00 × 105 0.111 2.50 × 105
3.57 × 105 0.132 2.97 × 105
Steel I Beam: S8 × 23 (S8 inch tall × 23 lbf/ft)
L = 5.00 ft
P (lbf/ft) w_max (in) stress_max (psi)
23.0 6.54 × 10-5 53.2
30.0 8.54 × 10-5 69.3
40.0 1.14 × 10-4 92.4
50.0 1.42 × 10-4 116
60.0 1.71 × 10-4 139
70.0 1.99 × 10-4 162
80.0 2.28 × 10-4 185
90.0 2.56 × 10-4 208
100 2.85 × 10-4 231
200 5.69 × 10-4 462
300 8.54 × 10-4 693
400 0.00114 924
500 0.00142 1160
600 0.00171 1390
700 0.00199 1620
800 0.00228 1850
900 0.00256 2080
1000 0.00285 2310
2000 0.00569 4620
3000 0.00854 6930
4000 0.0114 9240
5000 0.0142 1.16 × 104
6000 0.0171 1.39 × 104
7000 0.0199 1.62 × 104
8000 0.0228 1.85 × 104
9000 0.0256 2.08 × 104
1.00 × 104 0.0285 2.31 × 104
2.00 × 104 0.0569 4.62 × 104
3.00 × 104 0.0854 6.93 × 104
4.00 × 104 0.114 9.24 × 104
5.00 × 104 0.142 1.16 × 105
6.00 × 104 0.171 1.39 × 105
7.00 × 104 0.199 1.62 × 105
8.00 × 104 0.228 1.85 × 105
9.00 × 104 0.256 2.08 × 105
1.00 × 105 0.285 2.31 × 105
1.29 × 105 0.366 2.97 × 105
Steel I Beam: S8 × 23 (S8 inch tall × 23 lbf/ft)
L = 10.0 ft
P (lbf/ft) w_max (in) stress_max (psi)
23.0 0.00105 213
30.0 0.00137 277
40.0 0.00182 370
50.0 0.00228 462
60.0 0.00273 555
70.0 0.00319 647
80.0 0.00364 740
90.0 0.00410 832
100 0.00455 924
200 0.00911 1850
300 0.0137 2770
400 0.0182 3700
500 0.0228 4620
600 0.0273 5550
700 0.0319 6470
800 0.0364 7400
900 0.0410 8320
1000 0.0455 9240
2000 0.0911 1.85 × 104
3000 0.137 2.77 × 104
4000 0.182 3.70 × 104
5000 0.228 4.62 × 104
6000 0.273 5.55 × 104
7000 0.319 6.47 × 104
8000 0.364 7.40 × 104
9000 0.410 8.32 × 104
1.00 × 104 0.455 9.24 × 104
2.00 × 104 0.911 1.85 × 105
3.00 × 104 1.37 2.77 × 105
3.21 × 104 1.46 2.97 × 105
Steel I Beam: S8 × 23 (S8 inch tall × 23 lbf/ft)
L = 15.0 ft
P (lbf/ft) w_max (in) stress_max (psi)
23.0 0.00530 478
30.0 0.00691 624
40.0 0.00922 832
50.0 0.0115 1040
60.0 0.0138 1250
70.0 0.0161 1460
80.0 0.0184 1660
90.0 0.0207 1870
100 0.0230 2080
200 0.0461 4160
300 0.0691 6240
400 0.0922 8320
500 0.115 1.04 × 104
600 0.138 1.25 × 104
700 0.161 1.46 × 104
800 0.184 1.66 × 104
900 0.207 1.87 × 104
1000 0.230 2.08 × 104
2000 0.461 4.16 × 104
3000 0.691 6.24 × 104
4000 0.922 8.32 × 104
5000 1.15 1.04 × 105
6000 1.38 1.25 × 105
7000 1.61 1.46 × 105
8000 1.84 1.66 × 105
9000 2.07 1.87 × 105
1.00 × 104 2.30 2.08 × 105
1.43 × 104 3.29 2.97 × 105
Steel I Beam: S8 × 23 (S8 inch tall × 23 lbf/ft)
L = 20.0 ft
P (lbf/ft) w_max (in) stress_max (psi)
23.0 0.0168 851
30.0 0.0219 1110
40.0 0.0291 1480
50.0 0.0364 1850
60.0 0.0437 2220
70.0 0.0510 2590
80.0 0.0583 2960
90.0 0.0656 3330
100 0.0728 3700
200 0.146 7400
300 0.219 1.11 × 104
400 0.291 1.48 × 104
500 0.364 1.85 × 104
600 0.437 2.22 × 104
700 0.510 2.59 × 104
800 0.583 2.96 × 104
900 0.656 3.33 × 104
1000 0.728 3.70 × 104
2000 1.46 7.40 × 104
3000 2.19 1.11 × 105
4000 2.91 1.48 × 105
5000 3.64 1.85 × 105
6000 4.37 2.22 × 105
7000 5.10 2.59 × 105
8000 5.83 2.96 × 105
8030 5.85 2.97 × 105
Steel I Beam: S8 × 23 (S8 inch tall × 23 lbf/ft)
L = 25.0 ft
P (lbf/ft) w_max (in) stress_max (psi)
23.0 0.0409 1330
30.0 0.0534 1730
40.0 0.0711 2310
50.0 0.0889 2890
60.0 0.107 3470
70.0 0.124 4040
80.0 0.142 4620
90.0 0.160 5200
100 0.178 5780
200 0.356 1.16 × 104
300 0.534 1.73 × 104
400 0.711 2.31 × 104
500 0.889 2.89 × 104
600 1.07 3.47 × 104
700 1.24 4.04 × 104
800 1.42 4.62 × 104
900 1.60 5.20 × 104
1000 1.78 5.78 × 104
2000 3.56 1.16 × 105
3000 5.34 1.73 × 105
4000 7.11 2.31 × 105
4500 8.00 2.60 × 105
Steel I Beam: S8 × 23 (S8 inch tall × 23 lbf/ft)
L = 30.0 ft
P (lbf/ft) w_max (in) stress_max (psi)
23.0 0.0848 1910
30.0 0.111 2500
40.0 0.148 3330
50.0 0.184 4160
60.0 0.221 4990
70.0 0.258 5820
80.0 0.295 6660
90.0 0.332 7490
100 0.369 8320
200 0.738 1.66 × 104
300 1.11 2.50 × 104
400 1.48 3.33 × 104
500 1.84 4.16 × 104
600 2.21 4.99 × 104
700 2.58 5.82 × 104
800 2.95 6.66 × 104
900 3.32 7.49 × 104
1000 3.69 8.32 × 104
2000 7.38 1.66 × 105
2170 8.00 1.80 × 105
Steel I Beam: S8 × 23 (S8 inch tall × 23 lbf/ft)
L = 40.0 ft
P (lbf/ft) w_max (in) stress_max (psi)
23.0 0.268 3400
30.0 0.350 4440
40.0 0.466 5920
50.0 0.583 7400
60.0 0.699 8880
70.0 0.816 1.04 × 104
80.0 0.932 1.18 × 104
90.0 1.05 1.33 × 104
100 1.17 1.48 × 104
200 2.33 2.96 × 104
300 3.50 4.44 × 104
400 4.66 5.92 × 104
500 5.83 7.40 × 104
600 6.99 8.88 × 104
686 8.00 1.02 × 105
Steel I Beam: S8 × 23 (S8 inch tall × 23 lbf/ft)
L = 50.0 ft
P (lbf/ft) w_max (in) stress_max (psi)
23.0 0.654 5320
30.0 0.854 6930
40.0 1.14 9240
50.0 1.42 1.16 × 104
60.0 1.71 1.39 × 104
70.0 1.99 1.62 × 104
80.0 2.28 1.85 × 104
90.0 2.56 2.08 × 104
100 2.85 2.31 × 104
200 5.69 4.62 × 104
281 8.00 6.50 × 104
Steel I Beam: S8 × 23 (S8 inch tall × 23 lbf/ft)
L = 60.0 ft
P (lbf/ft) w_max (in) stress_max (psi)
23.0 1.36 7650
30.0 1.77 9980
40.0 2.36 1.33 × 104
50.0 2.95 1.66 × 104
60.0 3.54 2.00 × 104
70.0 4.13 2.33 × 104
80.0 4.72 2.66 × 104
90.0 5.31 3.00 × 104
100 5.90 3.33 × 104
136 8.00 4.51 × 104
Steel I Beam: S8 × 23 (S8 inch tall × 23 lbf/ft)
L = 70.0 ft
P (lbf/ft) w_max (in) stress_max (psi)
23.0 2.51 1.04 × 104
30.0 3.28 1.36 × 104
40.0 4.37 1.81 × 104
50.0 5.47 2.27 × 104
60.0 6.56 2.72 × 104
70.0 7.65 3.17 × 104
73.2 8.00 3.32 × 104
Steel I Beam: S8 × 23 (S8 inch tall × 23 lbf/ft)
L = 80.0 ft
P (lbf/ft) w_max (in) stress_max (psi)
23.0 4.29 1.36 × 104
30.0 5.59 1.78 × 104
40.0 7.46 2.37 × 104
42.9 8.00 2.54 × 104
Steel I Beam: S8 × 23 (S8 inch tall × 23 lbf/ft)
L = 90.0 ft
P (lbf/ft) w_max (in) stress_max (psi)
23.0 6.87 1.72 × 104
26.8 8.00 2.01 × 104
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