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Wide Flange Steel I Beam: W6 × 16
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Glossary » Beams » Simply Supported » Uniformly Distributed Load » Four 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 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 = 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 1.44 × 10-5 18.1
20.0 1.80 × 10-5 22.6
30.0 2.71 × 10-5 33.9
40.0 3.61 × 10-5 45.3
50.0 4.51 × 10-5 56.6
60.0 5.41 × 10-5 67.9
70.0 6.31 × 10-5 79.2
80.0 7.22 × 10-5 90.5
90.0 8.12 × 10-5 102
100 9.02 × 10-5 113
200 1.80 × 10-4 226
300 2.71 × 10-4 339
400 3.61 × 10-4 453
500 4.51 × 10-4 566
600 5.41 × 10-4 679
700 6.31 × 10-4 792
800 7.22 × 10-4 905
900 8.12 × 10-4 1020
1000 9.02 × 10-4 1130
2000 0.00180 2260
3000 0.00271 3390
4000 0.00361 4530
5000 0.00451 5660
6000 0.00541 6790
7000 0.00631 7920
8000 0.00722 9050
9000 0.00812 1.02 × 104
1.00 × 104 0.00902 1.13 × 104
2.00 × 104 0.0180 2.26 × 104
3.00 × 104 0.0271 3.39 × 104
4.00 × 104 0.0361 4.53 × 104
5.00 × 104 0.0451 5.66 × 104
6.00 × 104 0.0541 6.79 × 104
7.00 × 104 0.0631 7.92 × 104
8.00 × 104 0.0722 9.05 × 104
9.00 × 104 0.0812 1.02 × 105
1.00 × 105 0.0902 1.13 × 105
2.00 × 105 0.180 2.26 × 105
2.63 × 105 0.237 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 1.11 × 10-4 50.3
20.0 1.39 × 10-4 62.9
30.0 2.09 × 10-4 94.3
40.0 2.78 × 10-4 126
50.0 3.48 × 10-4 157
60.0 4.18 × 10-4 189
70.0 4.87 × 10-4 220
80.0 5.57 × 10-4 251
90.0 6.26 × 10-4 283
100 6.96 × 10-4 314
200 0.00139 629
300 0.00209 943
400 0.00278 1260
500 0.00348 1570
600 0.00418 1890
700 0.00487 2200
800 0.00557 2510
900 0.00626 2830
1000 0.00696 3140
2000 0.0139 6290
3000 0.0209 9430
4000 0.0278 1.26 × 104
5000 0.0348 1.57 × 104
6000 0.0418 1.89 × 104
7000 0.0487 2.20 × 104
8000 0.0557 2.51 × 104
9000 0.0626 2.83 × 104
1.00 × 104 0.0696 3.14 × 104
2.00 × 104 0.139 6.29 × 104
3.00 × 104 0.209 9.43 × 104
4.00 × 104 0.278 1.26 × 105
5.00 × 104 0.348 1.57 × 105
6.00 × 104 0.418 1.89 × 105
7.00 × 104 0.487 2.20 × 105
8.00 × 104 0.557 2.51 × 105
9.00 × 104 0.626 2.83 × 105
9.45 × 104 0.658 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 0.00178 201
20.0 0.00223 251
30.0 0.00334 377
40.0 0.00445 503
50.0 0.00557 629
60.0 0.00668 754
70.0 0.00779 880
80.0 0.00891 1010
90.0 0.0100 1130
100 0.0111 1260
200 0.0223 2510
300 0.0334 3770
400 0.0445 5030
500 0.0557 6290
600 0.0668 7540
700 0.0779 8800
800 0.0891 1.01 × 104
900 0.100 1.13 × 104
1000 0.111 1.26 × 104
2000 0.223 2.51 × 104
3000 0.334 3.77 × 104
4000 0.445 5.03 × 104
5000 0.557 6.29 × 104
6000 0.668 7.54 × 104
7000 0.779 8.80 × 104
8000 0.891 1.01 × 105
9000 1.00 1.13 × 105
1.00 × 104 1.11 1.26 × 105
2.00 × 104 2.23 2.51 × 105
2.36 × 104 2.63 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 0.00902 453
20.0 0.0113 566
30.0 0.0169 849
40.0 0.0225 1130
50.0 0.0282 1410
60.0 0.0338 1700
70.0 0.0395 1980
80.0 0.0451 2260
90.0 0.0507 2550
100 0.0564 2830
200 0.113 5660
300 0.169 8490
400 0.225 1.13 × 104
500 0.282 1.41 × 104
600 0.338 1.70 × 104
700 0.395 1.98 × 104
800 0.451 2.26 × 104
900 0.507 2.55 × 104
1000 0.564 2.83 × 104
2000 1.13 5.66 × 104
3000 1.69 8.49 × 104
4000 2.25 1.13 × 105
5000 2.82 1.41 × 105
6000 3.38 1.70 × 105
7000 3.95 1.98 × 105
8000 4.51 2.26 × 105
9000 5.07 2.55 × 105
1.00 × 104 5.64 2.83 × 105
1.05 × 104 5.92 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 0.0285 805
20.0 0.0356 1010
30.0 0.0534 1510
40.0 0.0713 2010
50.0 0.0891 2510
60.0 0.107 3020
70.0 0.125 3520
80.0 0.143 4020
90.0 0.160 4530
100 0.178 5030
200 0.356 1.01 × 104
300 0.534 1.51 × 104
400 0.713 2.01 × 104
500 0.891 2.51 × 104
600 1.07 3.02 × 104
700 1.25 3.52 × 104
800 1.43 4.02 × 104
900 1.60 4.53 × 104
1000 1.78 5.03 × 104
2000 3.56 1.01 × 105
3000 5.34 1.51 × 105
3530 6.28 1.77 × 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 0.0696 1260
20.0 0.0870 1570
30.0 0.130 2360
40.0 0.174 3140
50.0 0.217 3930
60.0 0.261 4710
70.0 0.304 5500
80.0 0.348 6290
90.0 0.391 7070
100 0.435 7860
200 0.870 1.57 × 104
300 1.30 2.36 × 104
400 1.74 3.14 × 104
500 2.17 3.93 × 104
600 2.61 4.71 × 104
700 3.04 5.50 × 104
800 3.48 6.29 × 104
900 3.91 7.07 × 104
1000 4.35 7.86 × 104
1440 6.28 1.13 × 105
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 0.144 1810
20.0 0.180 2260
30.0 0.271 3390
40.0 0.361 4530
50.0 0.451 5660
60.0 0.541 6790
70.0 0.631 7920
80.0 0.722 9050
90.0 0.812 1.02 × 104
100 0.902 1.13 × 104
200 1.80 2.26 × 104
300 2.71 3.39 × 104
400 3.61 4.53 × 104
500 4.51 5.66 × 104
600 5.41 6.79 × 104
696 6.28 7.88 × 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 0.456 3220
20.0 0.570 4020
30.0 0.855 6030
40.0 1.14 8050
50.0 1.43 1.01 × 104
60.0 1.71 1.21 × 104
70.0 2.00 1.41 × 104
80.0 2.28 1.61 × 104
90.0 2.57 1.81 × 104
100 2.85 2.01 × 104
200 5.70 4.02 × 104
220 6.28 4.43 × 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 1.11 5030
20.0 1.39 6290
30.0 2.09 9430
40.0 2.78 1.26 × 104
50.0 3.48 1.57 × 104
60.0 4.18 1.89 × 104
70.0 4.87 2.20 × 104
80.0 5.57 2.51 × 104
90.0 6.26 2.83 × 104
90.2 6.28 2.84 × 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 2.31 7240
20.0 2.89 9050
30.0 4.33 1.36 × 104
40.0 5.77 1.81 × 104
43.5 6.28 1.97 × 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 4.28 9860
20.0 5.35 1.23 × 104
23.5 6.28 1.45 × 104
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