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Wide Flange Steel I Beam: W8 × 58
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Glossary » Beams » Simply Supported » Uniformly Distributed Load » Two 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 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 = 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
L = 100 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 6.09 × 10-6 15.0
60.0 6.30 × 10-6 15.5
70.0 7.35 × 10-6 18.1
80.0 8.40 × 10-6 20.7
90.0 9.45 × 10-6 23.3
100 1.05 × 10-5 25.9
200 2.10 × 10-5 51.8
300 3.15 × 10-5 77.7
400 4.20 × 10-5 104
500 5.25 × 10-5 130
600 6.30 × 10-5 155
700 7.35 × 10-5 181
800 8.40 × 10-5 207
900 9.45 × 10-5 233
1000 1.05 × 10-4 259
2000 2.10 × 10-4 518
3000 3.15 × 10-4 777
4000 4.20 × 10-4 1040
5000 5.25 × 10-4 1300
6000 6.30 × 10-4 1550
7000 7.35 × 10-4 1810
8000 8.40 × 10-4 2070
9000 9.45 × 10-4 2330
1.00 × 104 0.00105 2590
2.00 × 104 0.00210 5180
3.00 × 104 0.00315 7770
4.00 × 104 0.00420 1.04 × 104
5.00 × 104 0.00525 1.30 × 104
6.00 × 104 0.00630 1.55 × 104
7.00 × 104 0.00735 1.81 × 104
8.00 × 104 0.00840 2.07 × 104
9.00 × 104 0.00945 2.33 × 104
1.00 × 105 0.0105 2.59 × 104
2.00 × 105 0.0210 5.18 × 104
3.00 × 105 0.0315 7.77 × 104
4.00 × 105 0.0420 1.04 × 105
5.00 × 105 0.0525 1.30 × 105
6.00 × 105 0.0630 1.55 × 105
7.00 × 105 0.0735 1.81 × 105
8.00 × 105 0.0840 2.07 × 105
9.00 × 105 0.0945 2.33 × 105
1.00 × 106 0.105 2.59 × 105
1.15 × 106 0.120 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 4.70 × 10-5 41.7
60.0 4.86 × 10-5 43.2
70.0 5.67 × 10-5 50.4
80.0 6.48 × 10-5 57.6
90.0 7.29 × 10-5 64.8
100 8.10 × 10-5 72.0
200 1.62 × 10-4 144
300 2.43 × 10-4 216
400 3.24 × 10-4 288
500 4.05 × 10-4 360
600 4.86 × 10-4 432
700 5.67 × 10-4 504
800 6.48 × 10-4 576
900 7.29 × 10-4 648
1000 8.10 × 10-4 720
2000 0.00162 1440
3000 0.00243 2160
4000 0.00324 2880
5000 0.00405 3600
6000 0.00486 4320
7000 0.00567 5040
8000 0.00648 5760
9000 0.00729 6480
1.00 × 104 0.00810 7200
2.00 × 104 0.0162 1.44 × 104
3.00 × 104 0.0243 2.16 × 104
4.00 × 104 0.0324 2.88 × 104
5.00 × 104 0.0405 3.60 × 104
6.00 × 104 0.0486 4.32 × 104
7.00 × 104 0.0567 5.04 × 104
8.00 × 104 0.0648 5.76 × 104
9.00 × 104 0.0729 6.48 × 104
1.00 × 105 0.0810 7.20 × 104
2.00 × 105 0.162 1.44 × 105
3.00 × 105 0.243 2.16 × 105
4.00 × 105 0.324 2.88 × 105
4.13 × 105 0.334 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 7.52 × 10-4 167
60.0 7.78 × 10-4 173
70.0 9.07 × 10-4 201
80.0 0.00104 230
90.0 0.00117 259
100 0.00130 288
200 0.00259 576
300 0.00389 863
400 0.00518 1150
500 0.00648 1440
600 0.00778 1730
700 0.00907 2010
800 0.0104 2300
900 0.0117 2590
1000 0.0130 2880
2000 0.0259 5760
3000 0.0389 8630
4000 0.0518 1.15 × 104
5000 0.0648 1.44 × 104
6000 0.0778 1.73 × 104
7000 0.0907 2.01 × 104
8000 0.104 2.30 × 104
9000 0.117 2.59 × 104
1.00 × 104 0.130 2.88 × 104
2.00 × 104 0.259 5.76 × 104
3.00 × 104 0.389 8.63 × 104
4.00 × 104 0.518 1.15 × 105
5.00 × 104 0.648 1.44 × 105
6.00 × 104 0.778 1.73 × 105
7.00 × 104 0.907 2.01 × 105
8.00 × 104 1.04 2.30 × 105
9.00 × 104 1.17 2.59 × 105
1.00 × 105 1.30 2.88 × 105
1.03 × 105 1.34 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 0.00381 376
60.0 0.00394 389
70.0 0.00459 453
80.0 0.00525 518
90.0 0.00590 583
100 0.00656 648
200 0.0131 1300
300 0.0197 1940
400 0.0262 2590
500 0.0328 3240
600 0.0394 3890
700 0.0459 4530
800 0.0525 5180
900 0.0590 5830
1000 0.0656 6480
2000 0.131 1.30 × 104
3000 0.197 1.94 × 104
4000 0.262 2.59 × 104
5000 0.328 3.24 × 104
6000 0.394 3.89 × 104
7000 0.459 4.53 × 104
8000 0.525 5.18 × 104
9000 0.590 5.83 × 104
1.00 × 104 0.656 6.48 × 104
2.00 × 104 1.31 1.30 × 105
3.00 × 104 1.97 1.94 × 105
4.00 × 104 2.62 2.59 × 105
4.59 × 104 3.01 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 0.0120 668
60.0 0.0124 691
70.0 0.0145 806
80.0 0.0166 921
90.0 0.0187 1040
100 0.0207 1150
200 0.0415 2300
300 0.0622 3450
400 0.0829 4610
500 0.104 5760
600 0.124 6910
700 0.145 8060
800 0.166 9210
900 0.187 1.04 × 104
1000 0.207 1.15 × 104
2000 0.415 2.30 × 104
3000 0.622 3.45 × 104
4000 0.829 4.61 × 104
5000 1.04 5.76 × 104
6000 1.24 6.91 × 104
7000 1.45 8.06 × 104
8000 1.66 9.21 × 104
9000 1.87 1.04 × 105
1.00 × 104 2.07 1.15 × 105
2.00 × 104 4.15 2.30 × 105
2.58 × 104 5.35 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 0.0294 1040
60.0 0.0304 1080
70.0 0.0354 1260
80.0 0.0405 1440
90.0 0.0456 1620
100 0.0506 1800
200 0.101 3600
300 0.152 5400
400 0.203 7200
500 0.253 8990
600 0.304 1.08 × 104
700 0.354 1.26 × 104
800 0.405 1.44 × 104
900 0.456 1.62 × 104
1000 0.506 1.80 × 104
2000 1.01 3.60 × 104
3000 1.52 5.40 × 104
4000 2.03 7.20 × 104
5000 2.53 8.99 × 104
6000 3.04 1.08 × 105
7000 3.54 1.26 × 105
8000 4.05 1.44 × 105
9000 4.56 1.62 × 105
1.00 × 104 5.06 1.80 × 105
1.65 × 104 8.36 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 0.0609 1500
60.0 0.0630 1550
70.0 0.0735 1810
80.0 0.0840 2070
90.0 0.0945 2330
100 0.105 2590
200 0.210 5180
300 0.315 7770
400 0.420 1.04 × 104
500 0.525 1.30 × 104
600 0.630 1.55 × 104
700 0.735 1.81 × 104
800 0.840 2.07 × 104
900 0.945 2.33 × 104
1000 1.05 2.59 × 104
2000 2.10 5.18 × 104
3000 3.15 7.77 × 104
4000 4.20 1.04 × 105
5000 5.25 1.30 × 105
6000 6.30 1.55 × 105
7000 7.35 1.81 × 105
8000 8.40 2.07 × 105
8340 8.75 2.16 × 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 0.192 2670
60.0 0.199 2760
70.0 0.232 3220
80.0 0.265 3680
90.0 0.299 4140
100 0.332 4610
200 0.664 9210
300 0.995 1.38 × 104
400 1.33 1.84 × 104
500 1.66 2.30 × 104
600 1.99 2.76 × 104
700 2.32 3.22 × 104
800 2.65 3.68 × 104
900 2.99 4.14 × 104
1000 3.32 4.61 × 104
2000 6.64 9.21 × 104
2640 8.75 1.21 × 105
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 0.470 4170
60.0 0.486 4320
70.0 0.567 5040
80.0 0.648 5760
90.0 0.729 6480
100 0.810 7200
200 1.62 1.44 × 104
300 2.43 2.16 × 104
400 3.24 2.88 × 104
500 4.05 3.60 × 104
600 4.86 4.32 × 104
700 5.67 5.04 × 104
800 6.48 5.76 × 104
900 7.29 6.48 × 104
1000 8.10 7.20 × 104
1080 8.75 7.77 × 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 0.974 6010
60.0 1.01 6220
70.0 1.18 7250
80.0 1.34 8290
90.0 1.51 9330
100 1.68 1.04 × 104
200 3.36 2.07 × 104
300 5.04 3.11 × 104
400 6.72 4.14 × 104
500 8.40 5.18 × 104
521 8.75 5.40 × 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 1.80 8180
60.0 1.87 8460
70.0 2.18 9870
80.0 2.49 1.13 × 104
90.0 2.80 1.27 × 104
100 3.11 1.41 × 104
200 6.22 2.82 × 104
281 8.75 3.97 × 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 3.08 1.07 × 104
60.0 3.19 1.11 × 104
70.0 3.72 1.29 × 104
80.0 4.25 1.47 × 104
90.0 4.78 1.66 × 104
100 5.31 1.84 × 104
165 8.75 3.04 × 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 4.93 1.35 × 104
60.0 5.10 1.40 × 104
70.0 5.95 1.63 × 104
80.0 6.80 1.87 × 104
90.0 7.65 2.10 × 104
100 8.50 2.33 × 104
103 8.75 2.40 × 104
Steel I Beam: W8 × 58 (Wide Flange 8 inch tall × 58 lbf/ft)
L = 100 ft
P (lbf/ft) w_max (in) stress_max (psi)
58.0 7.52 1.67 × 104
60.0 7.78 1.73 × 104
67.5 8.75 1.94 × 104
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