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Wide Flange Steel I Beam: W6 × 16
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Glossary » Beams » Simply Supported » Uniformly Distributed Load » Three Equal Spans » Wide Flange Steel I Beam » W6 × 16
Wide Flange Steel I Beam | Single Span | Two Equal Spans | Three Equal Spans | Four Equal Spans

For a simply supported beam in three equal spans, we compute the displacement at the middle of the first and the third span and the maximum normal stress stress_max occuring at the second and third support of the beam.
The tabulated data listed in this page are calculated based on the area moment of inertia (Ixx = 32.1 in4) for the W6 × 16 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
   
Steel I Beam: W6 × 16 (Wide Flange 6 inch tall × 16 lbf/ft)
L = 3.00 ft
P (lbf/ft) w_max (in) stress_max (psi)
16.0 1.56 × 10-5 16.9
20.0 1.95 × 10-5 21.1
30.0 2.92 × 10-5 31.7
40.0 3.89 × 10-5 42.3
50.0 4.87 × 10-5 52.8
60.0 5.84 × 10-5 63.4
70.0 6.81 × 10-5 74.0
80.0 7.79 × 10-5 84.5
90.0 8.76 × 10-5 95.1
100 9.73 × 10-5 106
200 1.95 × 10-4 211
300 2.92 × 10-4 317
400 3.89 × 10-4 423
500 4.87 × 10-4 528
600 5.84 × 10-4 634
700 6.81 × 10-4 740
800 7.79 × 10-4 845
900 8.76 × 10-4 951
1000 9.73 × 10-4 1060
2000 0.00195 2110
3000 0.00292 3170
4000 0.00389 4230
5000 0.00487 5280
6000 0.00584 6340
7000 0.00681 7400
8000 0.00779 8450
9000 0.00876 9510
1.00 × 104 0.00973 1.06 × 104
2.00 × 104 0.0195 2.11 × 104
3.00 × 104 0.0292 3.17 × 104
4.00 × 104 0.0389 4.23 × 104
5.00 × 104 0.0487 5.28 × 104
6.00 × 104 0.0584 6.34 × 104
7.00 × 104 0.0681 7.40 × 104
8.00 × 104 0.0779 8.45 × 104
9.00 × 104 0.0876 9.51 × 104
1.00 × 105 0.0973 1.06 × 105
2.00 × 105 0.195 2.11 × 105
2.81 × 105 0.274 2.97 × 105
Steel I Beam: W6 × 16 (Wide Flange 6 inch tall × 16 lbf/ft)
L = 5.00 ft
P (lbf/ft) w_max (in) stress_max (psi)
16.0 1.20 × 10-4 47.0
20.0 1.50 × 10-4 58.7
30.0 2.25 × 10-4 88.0
40.0 3.00 × 10-4 117
50.0 3.76 × 10-4 147
60.0 4.51 × 10-4 176
70.0 5.26 × 10-4 205
80.0 6.01 × 10-4 235
90.0 6.76 × 10-4 264
100 7.51 × 10-4 293
200 0.00150 587
300 0.00225 880
400 0.00300 1170
500 0.00376 1470
600 0.00451 1760
700 0.00526 2050
800 0.00601 2350
900 0.00676 2640
1000 0.00751 2930
2000 0.0150 5870
3000 0.0225 8800
4000 0.0300 1.17 × 104
5000 0.0376 1.47 × 104
6000 0.0451 1.76 × 104
7000 0.0526 2.05 × 104
8000 0.0601 2.35 × 104
9000 0.0676 2.64 × 104
1.00 × 104 0.0751 2.93 × 104
2.00 × 104 0.150 5.87 × 104
3.00 × 104 0.225 8.80 × 104
4.00 × 104 0.300 1.17 × 105
5.00 × 104 0.376 1.47 × 105
6.00 × 104 0.451 1.76 × 105
7.00 × 104 0.526 2.05 × 105
8.00 × 104 0.601 2.35 × 105
9.00 × 104 0.676 2.64 × 105
1.00 × 105 0.751 2.93 × 105
1.01 × 105 0.760 2.97 × 105
Steel I Beam: W6 × 16 (Wide Flange 6 inch tall × 16 lbf/ft)
L = 10.0 ft
P (lbf/ft) w_max (in) stress_max (psi)
16.0 0.00192 188
20.0 0.00240 235
30.0 0.00361 352
40.0 0.00481 470
50.0 0.00601 587
60.0 0.00721 704
70.0 0.00841 822
80.0 0.00961 939
90.0 0.0108 1060
100 0.0120 1170
200 0.0240 2350
300 0.0361 3520
400 0.0481 4700
500 0.0601 5870
600 0.0721 7040
700 0.0841 8220
800 0.0961 9390
900 0.108 1.06 × 104
1000 0.120 1.17 × 104
2000 0.240 2.35 × 104
3000 0.361 3.52 × 104
4000 0.481 4.70 × 104
5000 0.601 5.87 × 104
6000 0.721 7.04 × 104
7000 0.841 8.22 × 104
8000 0.961 9.39 × 104
9000 1.08 1.06 × 105
1.00 × 104 1.20 1.17 × 105
2.00 × 104 2.40 2.35 × 105
2.53 × 104 3.04 2.97 × 105
Steel I Beam: W6 × 16 (Wide Flange 6 inch tall × 16 lbf/ft)
L = 15.0 ft
P (lbf/ft) w_max (in) stress_max (psi)
16.0 0.00973 423
20.0 0.0122 528
30.0 0.0183 792
40.0 0.0243 1060
50.0 0.0304 1320
60.0 0.0365 1580
70.0 0.0426 1850
80.0 0.0487 2110
90.0 0.0548 2380
100 0.0608 2640
200 0.122 5280
300 0.183 7920
400 0.243 1.06 × 104
500 0.304 1.32 × 104
600 0.365 1.58 × 104
700 0.426 1.85 × 104
800 0.487 2.11 × 104
900 0.548 2.38 × 104
1000 0.608 2.64 × 104
2000 1.22 5.28 × 104
3000 1.83 7.92 × 104
4000 2.43 1.06 × 105
5000 3.04 1.32 × 105
6000 3.65 1.58 × 105
7000 4.26 1.85 × 105
8000 4.87 2.11 × 105
9000 5.48 2.38 × 105
1.00 × 104 6.08 2.64 × 105
1.12 × 104 6.84 2.97 × 105
Steel I Beam: W6 × 16 (Wide Flange 6 inch tall × 16 lbf/ft)
L = 20.0 ft
P (lbf/ft) w_max (in) stress_max (psi)
16.0 0.0308 751
20.0 0.0385 939
30.0 0.0577 1410
40.0 0.0769 1880
50.0 0.0961 2350
60.0 0.115 2820
70.0 0.135 3290
80.0 0.154 3760
90.0 0.173 4230
100 0.192 4700
200 0.385 9390
300 0.577 1.41 × 104
400 0.769 1.88 × 104
500 0.961 2.35 × 104
600 1.15 2.82 × 104
700 1.35 3.29 × 104
800 1.54 3.76 × 104
900 1.73 4.23 × 104
1000 1.92 4.70 × 104
2000 3.85 9.39 × 104
3000 5.77 1.41 × 105
3270 6.28 1.53 × 105
Steel I Beam: W6 × 16 (Wide Flange 6 inch tall × 16 lbf/ft)
L = 25.0 ft
P (lbf/ft) w_max (in) stress_max (psi)
16.0 0.0751 1170
20.0 0.0939 1470
30.0 0.141 2200
40.0 0.188 2930
50.0 0.235 3670
60.0 0.282 4400
70.0 0.329 5140
80.0 0.376 5870
90.0 0.423 6600
100 0.469 7340
200 0.939 1.47 × 104
300 1.41 2.20 × 104
400 1.88 2.93 × 104
500 2.35 3.67 × 104
600 2.82 4.40 × 104
700 3.29 5.14 × 104
800 3.76 5.87 × 104
900 4.23 6.60 × 104
1000 4.69 7.34 × 104
1340 6.28 9.81 × 104
Steel I Beam: W6 × 16 (Wide Flange 6 inch tall × 16 lbf/ft)
L = 30.0 ft
P (lbf/ft) w_max (in) stress_max (psi)
16.0 0.156 1690
20.0 0.195 2110
30.0 0.292 3170
40.0 0.389 4230
50.0 0.487 5280
60.0 0.584 6340
70.0 0.681 7400
80.0 0.779 8450
90.0 0.876 9510
100 0.973 1.06 × 104
200 1.95 2.11 × 104
300 2.92 3.17 × 104
400 3.89 4.23 × 104
500 4.87 5.28 × 104
600 5.84 6.34 × 104
645 6.28 6.82 × 104
Steel I Beam: W6 × 16 (Wide Flange 6 inch tall × 16 lbf/ft)
L = 40.0 ft
P (lbf/ft) w_max (in) stress_max (psi)
16.0 0.492 3010
20.0 0.615 3760
30.0 0.923 5630
40.0 1.23 7510
50.0 1.54 9390
60.0 1.85 1.13 × 104
70.0 2.15 1.31 × 104
80.0 2.46 1.50 × 104
90.0 2.77 1.69 × 104
100 3.08 1.88 × 104
200 6.15 3.76 × 104
204 6.28 3.83 × 104
Steel I Beam: W6 × 16 (Wide Flange 6 inch tall × 16 lbf/ft)
L = 50.0 ft
P (lbf/ft) w_max (in) stress_max (psi)
16.0 1.20 4700
20.0 1.50 5870
30.0 2.25 8800
40.0 3.00 1.17 × 104
50.0 3.76 1.47 × 104
60.0 4.51 1.76 × 104
70.0 5.26 2.05 × 104
80.0 6.01 2.35 × 104
83.6 6.28 2.45 × 104
Steel I Beam: W6 × 16 (Wide Flange 6 inch tall × 16 lbf/ft)
L = 60.0 ft
P (lbf/ft) w_max (in) stress_max (psi)
16.0 2.49 6760
20.0 3.12 8450
30.0 4.67 1.27 × 104
40.0 6.23 1.69 × 104
40.3 6.28 1.70 × 104
Steel I Beam: W6 × 16 (Wide Flange 6 inch tall × 16 lbf/ft)
L = 70.0 ft
P (lbf/ft) w_max (in) stress_max (psi)
16.0 4.62 9200
20.0 5.77 1.15 × 104
21.8 6.28 1.25 × 104
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