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Wide Flange Steel I Beam: W8 × 58
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Glossary » Beams » Simply Supported » Uniformly Distributed Load » Four Equal Spans » Wide Flange Steel I Beam » W8 × 58
Wide Flange 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 stress_max 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 = 228 in4) for the W8 × 58 Wide Flange 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: W8 × 58 (Wide Flange 8 inch tall × 58 lbf/ft)
L = 3.00 ft
P (lbf/ft) w_max (in) stress_max (psi)
58.0 7.36 × 10-6 12.9
60.0 7.62 × 10-6 13.3
70.0 8.89 × 10-6 15.5
80.0 1.02 × 10-5 17.8
90.0 1.14 × 10-5 20.0
100 1.27 × 10-5 22.2
200 2.54 × 10-5 44.4
300 3.81 × 10-5 66.6
400 5.08 × 10-5 88.8
500 6.35 × 10-5 111
600 7.62 × 10-5 133
700 8.89 × 10-5 155
800 1.02 × 10-4 178
900 1.14 × 10-4 200
1000 1.27 × 10-4 222
2000 2.54 × 10-4 444
3000 3.81 × 10-4 666
4000 5.08 × 10-4 888
5000 6.35 × 10-4 1110
6000 7.62 × 10-4 1330
7000 8.89 × 10-4 1550
8000 0.00102 1780
9000 0.00114 2000
1.00 × 104 0.00127 2220
2.00 × 104 0.00254 4440
3.00 × 104 0.00381 6660
4.00 × 104 0.00508 8880
5.00 × 104 0.00635 1.11 × 104
6.00 × 104 0.00762 1.33 × 104
7.00 × 104 0.00889 1.55 × 104
8.00 × 104 0.0102 1.78 × 104
9.00 × 104 0.0114 2.00 × 104
1.00 × 105 0.0127 2.22 × 104
2.00 × 105 0.0254 4.44 × 104
3.00 × 105 0.0381 6.66 × 104
4.00 × 105 0.0508 8.88 × 104
5.00 × 105 0.0635 1.11 × 105
6.00 × 105 0.0762 1.33 × 105
7.00 × 105 0.0889 1.55 × 105
8.00 × 105 0.102 1.78 × 105
9.00 × 105 0.114 2.00 × 105
1.00 × 106 0.127 2.22 × 105
1.34 × 106 0.170 2.97 × 105
Steel I Beam: W8 × 58 (Wide Flange 8 inch tall × 58 lbf/ft)
L = 5.00 ft
P (lbf/ft) w_max (in) stress_max (psi)
58.0 5.68 × 10-5 35.8
60.0 5.88 × 10-5 37.0
70.0 6.86 × 10-5 43.2
80.0 7.84 × 10-5 49.3
90.0 8.82 × 10-5 55.5
100 9.80 × 10-5 61.7
200 1.96 × 10-4 123
300 2.94 × 10-4 185
400 3.92 × 10-4 247
500 4.90 × 10-4 308
600 5.88 × 10-4 370
700 6.86 × 10-4 432
800 7.84 × 10-4 493
900 8.82 × 10-4 555
1000 9.80 × 10-4 617
2000 0.00196 1230
3000 0.00294 1850
4000 0.00392 2470
5000 0.00490 3080
6000 0.00588 3700
7000 0.00686 4320
8000 0.00784 4930
9000 0.00882 5550
1.00 × 104 0.00980 6170
2.00 × 104 0.0196 1.23 × 104
3.00 × 104 0.0294 1.85 × 104
4.00 × 104 0.0392 2.47 × 104
5.00 × 104 0.0490 3.08 × 104
6.00 × 104 0.0588 3.70 × 104
7.00 × 104 0.0686 4.32 × 104
8.00 × 104 0.0784 4.93 × 104
9.00 × 104 0.0882 5.55 × 104
1.00 × 105 0.0980 6.17 × 104
2.00 × 105 0.196 1.23 × 105
3.00 × 105 0.294 1.85 × 105
4.00 × 105 0.392 2.47 × 105
4.82 × 105 0.472 2.97 × 105
Steel I Beam: W8 × 58 (Wide Flange 8 inch tall × 58 lbf/ft)
L = 10.0 ft
P (lbf/ft) w_max (in) stress_max (psi)
58.0 9.09 × 10-4 143
60.0 9.41 × 10-4 148
70.0 0.00110 173
80.0 0.00125 197
90.0 0.00141 222
100 0.00157 247
200 0.00314 493
300 0.00470 740
400 0.00627 986
500 0.00784 1230
600 0.00941 1480
700 0.0110 1730
800 0.0125 1970
900 0.0141 2220
1000 0.0157 2470
2000 0.0314 4930
3000 0.0470 7400
4000 0.0627 9860
5000 0.0784 1.23 × 104
6000 0.0941 1.48 × 104
7000 0.110 1.73 × 104
8000 0.125 1.97 × 104
9000 0.141 2.22 × 104
1.00 × 104 0.157 2.47 × 104
2.00 × 104 0.314 4.93 × 104
3.00 × 104 0.470 7.40 × 104
4.00 × 104 0.627 9.86 × 104
5.00 × 104 0.784 1.23 × 105
6.00 × 104 0.941 1.48 × 105
7.00 × 104 1.10 1.73 × 105
8.00 × 104 1.25 1.97 × 105
9.00 × 104 1.41 2.22 × 105
1.00 × 105 1.57 2.47 × 105
1.20 × 105 1.89 2.97 × 105
Steel I Beam: W8 × 58 (Wide Flange 8 inch tall × 58 lbf/ft)
L = 15.0 ft
P (lbf/ft) w_max (in) stress_max (psi)
58.0 0.00460 322
60.0 0.00476 333
70.0 0.00556 388
80.0 0.00635 444
90.0 0.00714 499
100 0.00794 555
200 0.0159 1110
300 0.0238 1660
400 0.0317 2220
500 0.0397 2770
600 0.0476 3330
700 0.0556 3880
800 0.0635 4440
900 0.0714 4990
1000 0.0794 5550
2000 0.159 1.11 × 104
3000 0.238 1.66 × 104
4000 0.317 2.22 × 104
5000 0.397 2.77 × 104
6000 0.476 3.33 × 104
7000 0.556 3.88 × 104
8000 0.635 4.44 × 104
9000 0.714 4.99 × 104
1.00 × 104 0.794 5.55 × 104
2.00 × 104 1.59 1.11 × 105
3.00 × 104 2.38 1.66 × 105
4.00 × 104 3.17 2.22 × 105
5.00 × 104 3.97 2.77 × 105
5.35 × 104 4.25 2.97 × 105
Steel I Beam: W8 × 58 (Wide Flange 8 inch tall × 58 lbf/ft)
L = 20.0 ft
P (lbf/ft) w_max (in) stress_max (psi)
58.0 0.0145 572
60.0 0.0150 592
70.0 0.0176 691
80.0 0.0201 789
90.0 0.0226 888
100 0.0251 986
200 0.0502 1970
300 0.0752 2960
400 0.100 3950
500 0.125 4930
600 0.150 5920
700 0.176 6910
800 0.201 7890
900 0.226 8880
1000 0.251 9860
2000 0.502 1.97 × 104
3000 0.752 2.96 × 104
4000 1.00 3.95 × 104
5000 1.25 4.93 × 104
6000 1.50 5.92 × 104
7000 1.76 6.91 × 104
8000 2.01 7.89 × 104
9000 2.26 8.88 × 104
1.00 × 104 2.51 9.86 × 104
2.00 × 104 5.02 1.97 × 105
3.00 × 104 7.52 2.96 × 105
3.01 × 104 7.55 2.97 × 105
Steel I Beam: W8 × 58 (Wide Flange 8 inch tall × 58 lbf/ft)
L = 25.0 ft
P (lbf/ft) w_max (in) stress_max (psi)
58.0 0.0355 894
60.0 0.0367 925
70.0 0.0429 1080
80.0 0.0490 1230
90.0 0.0551 1390
100 0.0612 1540
200 0.122 3080
300 0.184 4620
400 0.245 6170
500 0.306 7710
600 0.367 9250
700 0.429 1.08 × 104
800 0.490 1.23 × 104
900 0.551 1.39 × 104
1000 0.612 1.54 × 104
2000 1.22 3.08 × 104
3000 1.84 4.62 × 104
4000 2.45 6.17 × 104
5000 3.06 7.71 × 104
6000 3.67 9.25 × 104
7000 4.29 1.08 × 105
8000 4.90 1.23 × 105
9000 5.51 1.39 × 105
1.00 × 104 6.12 1.54 × 105
1.93 × 104 11.8 2.97 × 105
Steel I Beam: W8 × 58 (Wide Flange 8 inch tall × 58 lbf/ft)
L = 30.0 ft
P (lbf/ft) w_max (in) stress_max (psi)
58.0 0.0736 1290
60.0 0.0762 1330
70.0 0.0889 1550
80.0 0.102 1780
90.0 0.114 2000
100 0.127 2220
200 0.254 4440
300 0.381 6660
400 0.508 8880
500 0.635 1.11 × 104
600 0.762 1.33 × 104
700 0.889 1.55 × 104
800 1.02 1.78 × 104
900 1.14 2.00 × 104
1000 1.27 2.22 × 104
2000 2.54 4.44 × 104
3000 3.81 6.66 × 104
4000 5.08 8.88 × 104
5000 6.35 1.11 × 105
6000 7.62 1.33 × 105
6890 8.75 1.53 × 105
Steel I Beam: W8 × 58 (Wide Flange 8 inch tall × 58 lbf/ft)
L = 40.0 ft
P (lbf/ft) w_max (in) stress_max (psi)
58.0 0.233 2290
60.0 0.241 2370
70.0 0.281 2760
80.0 0.321 3160
90.0 0.361 3550
100 0.401 3950
200 0.803 7890
300 1.20 1.18 × 104
400 1.61 1.58 × 104
500 2.01 1.97 × 104
600 2.41 2.37 × 104
700 2.81 2.76 × 104
800 3.21 3.16 × 104
900 3.61 3.55 × 104
1000 4.01 3.95 × 104
2000 8.03 7.89 × 104
2180 8.75 8.60 × 104
Steel I Beam: W8 × 58 (Wide Flange 8 inch tall × 58 lbf/ft)
L = 50.0 ft
P (lbf/ft) w_max (in) stress_max (psi)
58.0 0.568 3580
60.0 0.588 3700
70.0 0.686 4320
80.0 0.784 4930
90.0 0.882 5550
100 0.980 6170
200 1.96 1.23 × 104
300 2.94 1.85 × 104
400 3.92 2.47 × 104
500 4.90 3.08 × 104
600 5.88 3.70 × 104
700 6.86 4.32 × 104
800 7.84 4.93 × 104
893 8.75 5.51 × 104
Steel I Beam: W8 × 58 (Wide Flange 8 inch tall × 58 lbf/ft)
L = 60.0 ft
P (lbf/ft) w_max (in) stress_max (psi)
58.0 1.18 5150
60.0 1.22 5330
70.0 1.42 6210
80.0 1.63 7100
90.0 1.83 7990
100 2.03 8880
200 4.06 1.78 × 104
300 6.10 2.66 × 104
400 8.13 3.55 × 104
431 8.75 3.82 × 104
Steel I Beam: W8 × 58 (Wide Flange 8 inch tall × 58 lbf/ft)
L = 70.0 ft
P (lbf/ft) w_max (in) stress_max (psi)
58.0 2.18 7010
60.0 2.26 7250
70.0 2.63 8460
80.0 3.01 9670
90.0 3.39 1.09 × 104
100 3.76 1.21 × 104
200 7.53 2.42 × 104
232 8.75 2.81 × 104
Steel I Beam: W8 × 58 (Wide Flange 8 inch tall × 58 lbf/ft)
L = 80.0 ft
P (lbf/ft) w_max (in) stress_max (psi)
58.0 3.72 9150
60.0 3.85 9470
70.0 4.49 1.10 × 104
80.0 5.14 1.26 × 104
90.0 5.78 1.42 × 104
100 6.42 1.58 × 104
136 8.75 2.15 × 104
Steel I Beam: W8 × 58 (Wide Flange 8 inch tall × 58 lbf/ft)
L = 90.0 ft
P (lbf/ft) w_max (in) stress_max (psi)
58.0 5.97 1.16 × 104
60.0 6.17 1.20 × 104
70.0 7.20 1.40 × 104
80.0 8.23 1.60 × 104
85.1 8.75 1.70 × 104
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