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Wide Flange Steel I Beam: W10 × 45
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Glossary » Beams » Simply Supported » Uniformly Distributed Load » Two Equal Spans » Wide Flange Steel I Beam » W10 × 45
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 = 248 in4) for the W10 × 45 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: W10 × 45 (Wide Flange 10 inch tall × 45 lbf/ft)
L = 3.00 ft
P (lbf/ft) w_max (in) stress_max (psi)
45.0 4.34 × 10-6 12.4
50.0 4.83 × 10-6 13.7
60.0 5.79 × 10-6 16.5
70.0 6.76 × 10-6 19.2
80.0 7.72 × 10-6 22.0
90.0 8.69 × 10-6 24.7
100 9.65 × 10-6 27.5
200 1.93 × 10-5 55.0
300 2.90 × 10-5 82.5
400 3.86 × 10-5 110
500 4.83 × 10-5 137
600 5.79 × 10-5 165
700 6.76 × 10-5 192
800 7.72 × 10-5 220
900 8.69 × 10-5 247
1000 9.65 × 10-5 275
2000 1.93 × 10-4 550
3000 2.90 × 10-4 825
4000 3.86 × 10-4 1100
5000 4.83 × 10-4 1370
6000 5.79 × 10-4 1650
7000 6.76 × 10-4 1920
8000 7.72 × 10-4 2200
9000 8.69 × 10-4 2470
1.00 × 104 9.65 × 10-4 2750
2.00 × 104 0.00193 5500
3.00 × 104 0.00290 8250
4.00 × 104 0.00386 1.10 × 104
5.00 × 104 0.00483 1.37 × 104
6.00 × 104 0.00579 1.65 × 104
7.00 × 104 0.00676 1.92 × 104
8.00 × 104 0.00772 2.20 × 104
9.00 × 104 0.00869 2.47 × 104
1.00 × 105 0.00965 2.75 × 104
2.00 × 105 0.0193 5.50 × 104
3.00 × 105 0.0290 8.25 × 104
4.00 × 105 0.0386 1.10 × 105
5.00 × 105 0.0483 1.37 × 105
6.00 × 105 0.0579 1.65 × 105
7.00 × 105 0.0676 1.92 × 105
8.00 × 105 0.0772 2.20 × 105
9.00 × 105 0.0869 2.47 × 105
1.00 × 106 0.0965 2.75 × 105
1.08 × 106 0.104 2.97 × 105
Steel I Beam: W10 × 45 (Wide Flange 10 inch tall × 45 lbf/ft)
L = 5.00 ft
P (lbf/ft) w_max (in) stress_max (psi)
45.0 3.35 × 10-5 34.4
50.0 3.72 × 10-5 38.2
60.0 4.47 × 10-5 45.8
70.0 5.21 × 10-5 53.5
80.0 5.96 × 10-5 61.1
90.0 6.70 × 10-5 68.7
100 7.45 × 10-5 76.4
200 1.49 × 10-4 153
300 2.23 × 10-4 229
400 2.98 × 10-4 305
500 3.72 × 10-4 382
600 4.47 × 10-4 458
700 5.21 × 10-4 535
800 5.96 × 10-4 611
900 6.70 × 10-4 687
1000 7.45 × 10-4 764
2000 0.00149 1530
3000 0.00223 2290
4000 0.00298 3050
5000 0.00372 3820
6000 0.00447 4580
7000 0.00521 5350
8000 0.00596 6110
9000 0.00670 6870
1.00 × 104 0.00745 7640
2.00 × 104 0.0149 1.53 × 104
3.00 × 104 0.0223 2.29 × 104
4.00 × 104 0.0298 3.05 × 104
5.00 × 104 0.0372 3.82 × 104
6.00 × 104 0.0447 4.58 × 104
7.00 × 104 0.0521 5.35 × 104
8.00 × 104 0.0596 6.11 × 104
9.00 × 104 0.0670 6.87 × 104
1.00 × 105 0.0745 7.64 × 104
2.00 × 105 0.149 1.53 × 105
3.00 × 105 0.223 2.29 × 105
3.89 × 105 0.290 2.97 × 105
Steel I Beam: W10 × 45 (Wide Flange 10 inch tall × 45 lbf/ft)
L = 10.0 ft
P (lbf/ft) w_max (in) stress_max (psi)
45.0 5.36 × 10-4 137
50.0 5.96 × 10-4 153
60.0 7.15 × 10-4 183
70.0 8.34 × 10-4 214
80.0 9.53 × 10-4 244
90.0 0.00107 275
100 0.00119 305
200 0.00238 611
300 0.00357 916
400 0.00477 1220
500 0.00596 1530
600 0.00715 1830
700 0.00834 2140
800 0.00953 2440
900 0.0107 2750
1000 0.0119 3050
2000 0.0238 6110
3000 0.0357 9160
4000 0.0477 1.22 × 104
5000 0.0596 1.53 × 104
6000 0.0715 1.83 × 104
7000 0.0834 2.14 × 104
8000 0.0953 2.44 × 104
9000 0.107 2.75 × 104
1.00 × 104 0.119 3.05 × 104
2.00 × 104 0.238 6.11 × 104
3.00 × 104 0.357 9.16 × 104
4.00 × 104 0.477 1.22 × 105
5.00 × 104 0.596 1.53 × 105
6.00 × 104 0.715 1.83 × 105
7.00 × 104 0.834 2.14 × 105
8.00 × 104 0.953 2.44 × 105
9.00 × 104 1.07 2.75 × 105
9.72 × 104 1.16 2.97 × 105
Steel I Beam: W10 × 45 (Wide Flange 10 inch tall × 45 lbf/ft)
L = 15.0 ft
P (lbf/ft) w_max (in) stress_max (psi)
45.0 0.00271 309
50.0 0.00302 344
60.0 0.00362 412
70.0 0.00422 481
80.0 0.00483 550
90.0 0.00543 619
100 0.00603 687
200 0.0121 1370
300 0.0181 2060
400 0.0241 2750
500 0.0302 3440
600 0.0362 4120
700 0.0422 4810
800 0.0483 5500
900 0.0543 6190
1000 0.0603 6870
2000 0.121 1.37 × 104
3000 0.181 2.06 × 104
4000 0.241 2.75 × 104
5000 0.302 3.44 × 104
6000 0.362 4.12 × 104
7000 0.422 4.81 × 104
8000 0.483 5.50 × 104
9000 0.543 6.19 × 104
1.00 × 104 0.603 6.87 × 104
2.00 × 104 1.21 1.37 × 105
3.00 × 104 1.81 2.06 × 105
4.00 × 104 2.41 2.75 × 105
4.32 × 104 2.61 2.97 × 105
Steel I Beam: W10 × 45 (Wide Flange 10 inch tall × 45 lbf/ft)
L = 20.0 ft
P (lbf/ft) w_max (in) stress_max (psi)
45.0 0.00858 550
50.0 0.00953 611
60.0 0.0114 733
70.0 0.0133 855
80.0 0.0153 977
90.0 0.0172 1100
100 0.0191 1220
200 0.0381 2440
300 0.0572 3670
400 0.0763 4890
500 0.0953 6110
600 0.114 7330
700 0.133 8550
800 0.153 9770
900 0.172 1.10 × 104
1000 0.191 1.22 × 104
2000 0.381 2.44 × 104
3000 0.572 3.67 × 104
4000 0.763 4.89 × 104
5000 0.953 6.11 × 104
6000 1.14 7.33 × 104
7000 1.33 8.55 × 104
8000 1.53 9.77 × 104
9000 1.72 1.10 × 105
1.00 × 104 1.91 1.22 × 105
2.00 × 104 3.81 2.44 × 105
2.43 × 104 4.63 2.97 × 105
Steel I Beam: W10 × 45 (Wide Flange 10 inch tall × 45 lbf/ft)
L = 25.0 ft
P (lbf/ft) w_max (in) stress_max (psi)
45.0 0.0209 859
50.0 0.0233 955
60.0 0.0279 1150
70.0 0.0326 1340
80.0 0.0372 1530
90.0 0.0419 1720
100 0.0465 1910
200 0.0931 3820
300 0.140 5730
400 0.186 7640
500 0.233 9550
600 0.279 1.15 × 104
700 0.326 1.34 × 104
800 0.372 1.53 × 104
900 0.419 1.72 × 104
1000 0.465 1.91 × 104
2000 0.931 3.82 × 104
3000 1.40 5.73 × 104
4000 1.86 7.64 × 104
5000 2.33 9.55 × 104
6000 2.79 1.15 × 105
7000 3.26 1.34 × 105
8000 3.72 1.53 × 105
9000 4.19 1.72 × 105
1.00 × 104 4.65 1.91 × 105
1.56 × 104 7.24 2.97 × 105
Steel I Beam: W10 × 45 (Wide Flange 10 inch tall × 45 lbf/ft)
L = 30.0 ft
P (lbf/ft) w_max (in) stress_max (psi)
45.0 0.0434 1240
50.0 0.0483 1370
60.0 0.0579 1650
70.0 0.0676 1920
80.0 0.0772 2200
90.0 0.0869 2470
100 0.0965 2750
200 0.193 5500
300 0.290 8250
400 0.386 1.10 × 104
500 0.483 1.37 × 104
600 0.579 1.65 × 104
700 0.676 1.92 × 104
800 0.772 2.20 × 104
900 0.869 2.47 × 104
1000 0.965 2.75 × 104
2000 1.93 5.50 × 104
3000 2.90 8.25 × 104
4000 3.86 1.10 × 105
5000 4.83 1.37 × 105
6000 5.79 1.65 × 105
7000 6.76 1.92 × 105
8000 7.72 2.20 × 105
9000 8.69 2.47 × 105
1.00 × 104 9.65 2.75 × 105
1.08 × 104 10.4 2.97 × 105
Steel I Beam: W10 × 45 (Wide Flange 10 inch tall × 45 lbf/ft)
L = 40.0 ft
P (lbf/ft) w_max (in) stress_max (psi)
45.0 0.137 2200
50.0 0.153 2440
60.0 0.183 2930
70.0 0.214 3420
80.0 0.244 3910
90.0 0.275 4400
100 0.305 4890
200 0.610 9770
300 0.915 1.47 × 104
400 1.22 1.95 × 104
500 1.53 2.44 × 104
600 1.83 2.93 × 104
700 2.14 3.42 × 104
800 2.44 3.91 × 104
900 2.75 4.40 × 104
1000 3.05 4.89 × 104
2000 6.10 9.77 × 104
3000 9.15 1.47 × 105
3310 10.1 1.62 × 105
Steel I Beam: W10 × 45 (Wide Flange 10 inch tall × 45 lbf/ft)
L = 50.0 ft
P (lbf/ft) w_max (in) stress_max (psi)
45.0 0.335 3440
50.0 0.372 3820
60.0 0.447 4580
70.0 0.521 5350
80.0 0.596 6110
90.0 0.670 6870
100 0.745 7640
200 1.49 1.53 × 104
300 2.23 2.29 × 104
400 2.98 3.05 × 104
500 3.72 3.82 × 104
600 4.47 4.58 × 104
700 5.21 5.35 × 104
800 5.96 6.11 × 104
900 6.70 6.87 × 104
1000 7.45 7.64 × 104
1360 10.1 1.04 × 105
Steel I Beam: W10 × 45 (Wide Flange 10 inch tall × 45 lbf/ft)
L = 60.0 ft
P (lbf/ft) w_max (in) stress_max (psi)
45.0 0.695 4950
50.0 0.772 5500
60.0 0.927 6600
70.0 1.08 7700
80.0 1.24 8800
90.0 1.39 9900
100 1.54 1.10 × 104
200 3.09 2.20 × 104
300 4.63 3.30 × 104
400 6.18 4.40 × 104
500 7.72 5.50 × 104
600 9.27 6.60 × 104
654 10.1 7.19 × 104
Steel I Beam: W10 × 45 (Wide Flange 10 inch tall × 45 lbf/ft)
L = 70.0 ft
P (lbf/ft) w_max (in) stress_max (psi)
45.0 1.29 6740
50.0 1.43 7480
60.0 1.72 8980
70.0 2.00 1.05 × 104
80.0 2.29 1.20 × 104
90.0 2.57 1.35 × 104
100 2.86 1.50 × 104
200 5.72 2.99 × 104
300 8.58 4.49 × 104
353 10.1 5.28 × 104
Steel I Beam: W10 × 45 (Wide Flange 10 inch tall × 45 lbf/ft)
L = 80.0 ft
P (lbf/ft) w_max (in) stress_max (psi)
45.0 2.20 8800
50.0 2.44 9770
60.0 2.93 1.17 × 104
70.0 3.42 1.37 × 104
80.0 3.90 1.56 × 104
90.0 4.39 1.76 × 104
100 4.88 1.95 × 104
200 9.76 3.91 × 104
207 10.1 4.05 × 104
Steel I Beam: W10 × 45 (Wide Flange 10 inch tall × 45 lbf/ft)
L = 90.0 ft
P (lbf/ft) w_max (in) stress_max (psi)
45.0 3.52 1.11 × 104
50.0 3.91 1.24 × 104
60.0 4.69 1.48 × 104
70.0 5.47 1.73 × 104
80.0 6.25 1.98 × 104
90.0 7.04 2.23 × 104
100 7.82 2.47 × 104
129 10.1 3.20 × 104
Steel I Beam: W10 × 45 (Wide Flange 10 inch tall × 45 lbf/ft)
L = 100 ft
P (lbf/ft) w_max (in) stress_max (psi)
45.0 5.36 1.37 × 104
50.0 5.96 1.53 × 104
60.0 7.15 1.83 × 104
70.0 8.34 2.14 × 104
80.0 9.53 2.44 × 104
84.8 10.1 2.59 × 104
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