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Wide Flange Steel I Beam: W10 × 49
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Glossary » Beams » Simply Supported » Uniformly Distributed Load » Two Equal Spans » Wide Flange Steel I Beam » W10 × 49
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 = 272 in4) for the W10 × 49 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 × 49 (Wide Flange 10 inch tall × 49 lbf/ft)
L = 3.00 ft
P (lbf/ft) w_max (in) stress_max (psi)
49.0 4.31 × 10-6 12.1
50.0 4.40 × 10-6 12.4
60.0 5.28 × 10-6 14.9
70.0 6.16 × 10-6 17.3
80.0 7.04 × 10-6 19.8
90.0 7.92 × 10-6 22.3
100 8.80 × 10-6 24.8
200 1.76 × 10-5 49.5
300 2.64 × 10-5 74.3
400 3.52 × 10-5 99.1
500 4.40 × 10-5 124
600 5.28 × 10-5 149
700 6.16 × 10-5 173
800 7.04 × 10-5 198
900 7.92 × 10-5 223
1000 8.80 × 10-5 248
2000 1.76 × 10-4 495
3000 2.64 × 10-4 743
4000 3.52 × 10-4 991
5000 4.40 × 10-4 1240
6000 5.28 × 10-4 1490
7000 6.16 × 10-4 1730
8000 7.04 × 10-4 1980
9000 7.92 × 10-4 2230
1.00 × 104 8.80 × 10-4 2480
2.00 × 104 0.00176 4950
3.00 × 104 0.00264 7430
4.00 × 104 0.00352 9910
5.00 × 104 0.00440 1.24 × 104
6.00 × 104 0.00528 1.49 × 104
7.00 × 104 0.00616 1.73 × 104
8.00 × 104 0.00704 1.98 × 104
9.00 × 104 0.00792 2.23 × 104
1.00 × 105 0.00880 2.48 × 104
2.00 × 105 0.0176 4.95 × 104
3.00 × 105 0.0264 7.43 × 104
4.00 × 105 0.0352 9.91 × 104
5.00 × 105 0.0440 1.24 × 105
6.00 × 105 0.0528 1.49 × 105
7.00 × 105 0.0616 1.73 × 105
8.00 × 105 0.0704 1.98 × 105
9.00 × 105 0.0792 2.23 × 105
1.00 × 106 0.0880 2.48 × 105
1.20 × 106 0.106 2.97 × 105
Steel I Beam: W10 × 49 (Wide Flange 10 inch tall × 49 lbf/ft)
L = 5.00 ft
P (lbf/ft) w_max (in) stress_max (psi)
49.0 3.33 × 10-5 33.7
50.0 3.39 × 10-5 34.4
60.0 4.07 × 10-5 41.3
70.0 4.75 × 10-5 48.2
80.0 5.43 × 10-5 55.0
90.0 6.11 × 10-5 61.9
100 6.79 × 10-5 68.8
200 1.36 × 10-4 138
300 2.04 × 10-4 206
400 2.72 × 10-4 275
500 3.39 × 10-4 344
600 4.07 × 10-4 413
700 4.75 × 10-4 482
800 5.43 × 10-4 550
900 6.11 × 10-4 619
1000 6.79 × 10-4 688
2000 0.00136 1380
3000 0.00204 2060
4000 0.00272 2750
5000 0.00339 3440
6000 0.00407 4130
7000 0.00475 4820
8000 0.00543 5500
9000 0.00611 6190
1.00 × 104 0.00679 6880
2.00 × 104 0.0136 1.38 × 104
3.00 × 104 0.0204 2.06 × 104
4.00 × 104 0.0272 2.75 × 104
5.00 × 104 0.0339 3.44 × 104
6.00 × 104 0.0407 4.13 × 104
7.00 × 104 0.0475 4.82 × 104
8.00 × 104 0.0543 5.50 × 104
9.00 × 104 0.0611 6.19 × 104
1.00 × 105 0.0679 6.88 × 104
2.00 × 105 0.136 1.38 × 105
3.00 × 105 0.204 2.06 × 105
4.00 × 105 0.272 2.75 × 105
4.32 × 105 0.293 2.97 × 105
Steel I Beam: W10 × 49 (Wide Flange 10 inch tall × 49 lbf/ft)
L = 10.0 ft
P (lbf/ft) w_max (in) stress_max (psi)
49.0 5.32 × 10-4 135
50.0 5.43 × 10-4 138
60.0 6.52 × 10-4 165
70.0 7.60 × 10-4 193
80.0 8.69 × 10-4 220
90.0 9.78 × 10-4 248
100 0.00109 275
200 0.00217 550
300 0.00326 826
400 0.00435 1100
500 0.00543 1380
600 0.00652 1650
700 0.00760 1930
800 0.00869 2200
900 0.00978 2480
1000 0.0109 2750
2000 0.0217 5500
3000 0.0326 8260
4000 0.0435 1.10 × 104
5000 0.0543 1.38 × 104
6000 0.0652 1.65 × 104
7000 0.0760 1.93 × 104
8000 0.0869 2.20 × 104
9000 0.0978 2.48 × 104
1.00 × 104 0.109 2.75 × 104
2.00 × 104 0.217 5.50 × 104
3.00 × 104 0.326 8.26 × 104
4.00 × 104 0.435 1.10 × 105
5.00 × 104 0.543 1.38 × 105
6.00 × 104 0.652 1.65 × 105
7.00 × 104 0.760 1.93 × 105
8.00 × 104 0.869 2.20 × 105
9.00 × 104 0.978 2.48 × 105
1.00 × 105 1.09 2.75 × 105
1.08 × 105 1.17 2.97 × 105
Steel I Beam: W10 × 49 (Wide Flange 10 inch tall × 49 lbf/ft)
L = 15.0 ft
P (lbf/ft) w_max (in) stress_max (psi)
49.0 0.00269 303
50.0 0.00275 310
60.0 0.00330 371
70.0 0.00385 433
80.0 0.00440 495
90.0 0.00495 557
100 0.00550 619
200 0.0110 1240
300 0.0165 1860
400 0.0220 2480
500 0.0275 3100
600 0.0330 3710
700 0.0385 4330
800 0.0440 4950
900 0.0495 5570
1000 0.0550 6190
2000 0.110 1.24 × 104
3000 0.165 1.86 × 104
4000 0.220 2.48 × 104
5000 0.275 3.10 × 104
6000 0.330 3.71 × 104
7000 0.385 4.33 × 104
8000 0.440 4.95 × 104
9000 0.495 5.57 × 104
1.00 × 104 0.550 6.19 × 104
2.00 × 104 1.10 1.24 × 105
3.00 × 104 1.65 1.86 × 105
4.00 × 104 2.20 2.48 × 105
4.80 × 104 2.64 2.97 × 105
Steel I Beam: W10 × 49 (Wide Flange 10 inch tall × 49 lbf/ft)
L = 20.0 ft
P (lbf/ft) w_max (in) stress_max (psi)
49.0 0.00852 539
50.0 0.00869 550
60.0 0.0104 660
70.0 0.0122 771
80.0 0.0139 881
90.0 0.0156 991
100 0.0174 1100
200 0.0348 2200
300 0.0521 3300
400 0.0695 4400
500 0.0869 5500
600 0.104 6600
700 0.122 7710
800 0.139 8810
900 0.156 9910
1000 0.174 1.10 × 104
2000 0.348 2.20 × 104
3000 0.521 3.30 × 104
4000 0.695 4.40 × 104
5000 0.869 5.50 × 104
6000 1.04 6.60 × 104
7000 1.22 7.71 × 104
8000 1.39 8.81 × 104
9000 1.56 9.91 × 104
1.00 × 104 1.74 1.10 × 105
2.00 × 104 3.48 2.20 × 105
2.70 × 104 4.69 2.97 × 105
Steel I Beam: W10 × 49 (Wide Flange 10 inch tall × 49 lbf/ft)
L = 25.0 ft
P (lbf/ft) w_max (in) stress_max (psi)
49.0 0.0208 843
50.0 0.0212 860
60.0 0.0255 1030
70.0 0.0297 1200
80.0 0.0339 1380
90.0 0.0382 1550
100 0.0424 1720
200 0.0849 3440
300 0.127 5160
400 0.170 6880
500 0.212 8600
600 0.255 1.03 × 104
700 0.297 1.20 × 104
800 0.339 1.38 × 104
900 0.382 1.55 × 104
1000 0.424 1.72 × 104
2000 0.849 3.44 × 104
3000 1.27 5.16 × 104
4000 1.70 6.88 × 104
5000 2.12 8.60 × 104
6000 2.55 1.03 × 105
7000 2.97 1.20 × 105
8000 3.39 1.38 × 105
9000 3.82 1.55 × 105
1.00 × 104 4.24 1.72 × 105
1.73 × 104 7.33 2.97 × 105
Steel I Beam: W10 × 49 (Wide Flange 10 inch tall × 49 lbf/ft)
L = 30.0 ft
P (lbf/ft) w_max (in) stress_max (psi)
49.0 0.0431 1210
50.0 0.0440 1240
60.0 0.0528 1490
70.0 0.0616 1730
80.0 0.0704 1980
90.0 0.0792 2230
100 0.0880 2480
200 0.176 4950
300 0.264 7430
400 0.352 9910
500 0.440 1.24 × 104
600 0.528 1.49 × 104
700 0.616 1.73 × 104
800 0.704 1.98 × 104
900 0.792 2.23 × 104
1000 0.880 2.48 × 104
2000 1.76 4.95 × 104
3000 2.64 7.43 × 104
4000 3.52 9.91 × 104
5000 4.40 1.24 × 105
6000 5.28 1.49 × 105
7000 6.16 1.73 × 105
8000 7.04 1.98 × 105
9000 7.92 2.23 × 105
1.00 × 104 8.80 2.48 × 105
1.20 × 104 10.6 2.97 × 105
Steel I Beam: W10 × 49 (Wide Flange 10 inch tall × 49 lbf/ft)
L = 40.0 ft
P (lbf/ft) w_max (in) stress_max (psi)
49.0 0.136 2160
50.0 0.139 2200
60.0 0.167 2640
70.0 0.195 3080
80.0 0.222 3520
90.0 0.250 3960
100 0.278 4400
200 0.556 8810
300 0.834 1.32 × 104
400 1.11 1.76 × 104
500 1.39 2.20 × 104
600 1.67 2.64 × 104
700 1.95 3.08 × 104
800 2.22 3.52 × 104
900 2.50 3.96 × 104
1000 2.78 4.40 × 104
2000 5.56 8.81 × 104
3000 8.34 1.32 × 105
3590 9.98 1.58 × 105
Steel I Beam: W10 × 49 (Wide Flange 10 inch tall × 49 lbf/ft)
L = 50.0 ft
P (lbf/ft) w_max (in) stress_max (psi)
49.0 0.333 3370
50.0 0.339 3440
60.0 0.407 4130
70.0 0.475 4820
80.0 0.543 5500
90.0 0.611 6190
100 0.679 6880
200 1.36 1.38 × 104
300 2.04 2.06 × 104
400 2.72 2.75 × 104
500 3.39 3.44 × 104
600 4.07 4.13 × 104
700 4.75 4.82 × 104
800 5.43 5.50 × 104
900 6.11 6.19 × 104
1000 6.79 6.88 × 104
1470 9.98 1.01 × 105
Steel I Beam: W10 × 49 (Wide Flange 10 inch tall × 49 lbf/ft)
L = 60.0 ft
P (lbf/ft) w_max (in) stress_max (psi)
49.0 0.690 4850
50.0 0.704 4950
60.0 0.845 5940
70.0 0.986 6930
80.0 1.13 7930
90.0 1.27 8920
100 1.41 9910
200 2.82 1.98 × 104
300 4.22 2.97 × 104
400 5.63 3.96 × 104
500 7.04 4.95 × 104
600 8.45 5.94 × 104
700 9.86 6.93 × 104
709 9.98 7.02 × 104
Steel I Beam: W10 × 49 (Wide Flange 10 inch tall × 49 lbf/ft)
L = 70.0 ft
P (lbf/ft) w_max (in) stress_max (psi)
49.0 1.28 6610
50.0 1.30 6740
60.0 1.57 8090
70.0 1.83 9440
80.0 2.09 1.08 × 104
90.0 2.35 1.21 × 104
100 2.61 1.35 × 104
200 5.22 2.70 × 104
300 7.83 4.05 × 104
383 9.98 5.16 × 104
Steel I Beam: W10 × 49 (Wide Flange 10 inch tall × 49 lbf/ft)
L = 80.0 ft
P (lbf/ft) w_max (in) stress_max (psi)
49.0 2.18 8630
50.0 2.22 8810
60.0 2.67 1.06 × 104
70.0 3.11 1.23 × 104
80.0 3.56 1.41 × 104
90.0 4.00 1.59 × 104
100 4.45 1.76 × 104
200 8.90 3.52 × 104
224 9.98 3.95 × 104
Steel I Beam: W10 × 49 (Wide Flange 10 inch tall × 49 lbf/ft)
L = 90.0 ft
P (lbf/ft) w_max (in) stress_max (psi)
49.0 3.49 1.09 × 104
50.0 3.56 1.11 × 104
60.0 4.28 1.34 × 104
70.0 4.99 1.56 × 104
80.0 5.70 1.78 × 104
90.0 6.41 2.01 × 104
100 7.13 2.23 × 104
140 9.98 3.12 × 104
Steel I Beam: W10 × 49 (Wide Flange 10 inch tall × 49 lbf/ft)
L = 100 ft
P (lbf/ft) w_max (in) stress_max (psi)
49.0 5.32 1.35 × 104
50.0 5.43 1.38 × 104
60.0 6.52 1.65 × 104
70.0 7.60 1.93 × 104
80.0 8.69 2.20 × 104
90.0 9.78 2.48 × 104
91.9 9.98 2.53 × 104
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