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Wide Flange Steel I Beam: W6 × 9
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Glossary » Beams » Simply Supported » Uniformly Distributed Load » Single Span » Wide Flange Steel I Beam » W6 × 9
Wide Flange Steel I Beam | Single Span | Two Equal Spans | Three Equal Spans | Four Equal Spans

For a simply supported beam in a single span, the maximum displacement w_max and the maximum normal stress stress_max occur at the center of the beam.
The tabulated data listed in this page are calculated based on the area moment of inertia (Ixx = 16.4 in4) for the W6 × 9 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
   
Steel I Beam: W6 × 9 (Wide Flange 6 inch tall × 9 lbf/ft)
L = 3.00 ft
P (lbf/ft) w_max (in) stress_max (psi)
9.00 3.28 × 10-5 21.9
10.0 3.65 × 10-5 24.3
20.0 7.30 × 10-5 48.6
30.0 1.09 × 10-4 72.9
40.0 1.46 × 10-4 97.1
50.0 1.82 × 10-4 121
60.0 2.19 × 10-4 146
70.0 2.55 × 10-4 170
80.0 2.92 × 10-4 194
90.0 3.28 × 10-4 219
100 3.65 × 10-4 243
200 7.30 × 10-4 486
300 0.00109 729
400 0.00146 971
500 0.00182 1210
600 0.00219 1460
700 0.00255 1700
800 0.00292 1940
900 0.00328 2190
1000 0.00365 2430
2000 0.00730 4860
3000 0.0109 7290
4000 0.0146 9710
5000 0.0182 1.21 × 104
6000 0.0219 1.46 × 104
7000 0.0255 1.70 × 104
8000 0.0292 1.94 × 104
9000 0.0328 2.19 × 104
1.00 × 104 0.0365 2.43 × 104
2.00 × 104 0.0730 4.86 × 104
3.00 × 104 0.109 7.29 × 104
4.00 × 104 0.146 9.71 × 104
5.00 × 104 0.182 1.21 × 105
6.00 × 104 0.219 1.46 × 105
7.00 × 104 0.255 1.70 × 105
8.00 × 104 0.292 1.94 × 105
9.00 × 104 0.328 2.19 × 105
1.00 × 105 0.365 2.43 × 105
1.22 × 105 0.446 2.97 × 105
Steel I Beam: W6 × 9 (Wide Flange 6 inch tall × 9 lbf/ft)
L = 5.00 ft
P (lbf/ft) w_max (in) stress_max (psi)
9.00 2.53 × 10-4 60.7
10.0 2.82 × 10-4 67.5
20.0 5.63 × 10-4 135
30.0 8.45 × 10-4 202
40.0 0.00113 270
50.0 0.00141 337
60.0 0.00169 405
70.0 0.00197 472
80.0 0.00225 540
90.0 0.00253 607
100 0.00282 675
200 0.00563 1350
300 0.00845 2020
400 0.0113 2700
500 0.0141 3370
600 0.0169 4050
700 0.0197 4720
800 0.0225 5400
900 0.0253 6070
1000 0.0282 6750
2000 0.0563 1.35 × 104
3000 0.0845 2.02 × 104
4000 0.113 2.70 × 104
5000 0.141 3.37 × 104
6000 0.169 4.05 × 104
7000 0.197 4.72 × 104
8000 0.225 5.40 × 104
9000 0.253 6.07 × 104
1.00 × 104 0.282 6.75 × 104
2.00 × 104 0.563 1.35 × 105
3.00 × 104 0.845 2.02 × 105
4.00 × 104 1.13 2.70 × 105
4.40 × 104 1.24 2.97 × 105
Steel I Beam: W6 × 9 (Wide Flange 6 inch tall × 9 lbf/ft)
L = 10.0 ft
P (lbf/ft) w_max (in) stress_max (psi)
9.00 0.00405 243
10.0 0.00450 270
20.0 0.00901 540
30.0 0.0135 809
40.0 0.0180 1080
50.0 0.0225 1350
60.0 0.0270 1620
70.0 0.0315 1890
80.0 0.0360 2160
90.0 0.0405 2430
100 0.0450 2700
200 0.0901 5400
300 0.135 8090
400 0.180 1.08 × 104
500 0.225 1.35 × 104
600 0.270 1.62 × 104
700 0.315 1.89 × 104
800 0.360 2.16 × 104
900 0.405 2.43 × 104
1000 0.450 2.70 × 104
2000 0.901 5.40 × 104
3000 1.35 8.09 × 104
4000 1.80 1.08 × 105
5000 2.25 1.35 × 105
6000 2.70 1.62 × 105
7000 3.15 1.89 × 105
8000 3.60 2.16 × 105
9000 4.05 2.43 × 105
1.00 × 104 4.50 2.70 × 105
1.10 × 104 4.96 2.97 × 105
Steel I Beam: W6 × 9 (Wide Flange 6 inch tall × 9 lbf/ft)
L = 15.0 ft
P (lbf/ft) w_max (in) stress_max (psi)
9.00 0.0205 546
10.0 0.0228 607
20.0 0.0456 1210
30.0 0.0684 1820
40.0 0.0912 2430
50.0 0.114 3040
60.0 0.137 3640
70.0 0.160 4250
80.0 0.182 4860
90.0 0.205 5460
100 0.228 6070
200 0.456 1.21 × 104
300 0.684 1.82 × 104
400 0.912 2.43 × 104
500 1.14 3.04 × 104
600 1.37 3.64 × 104
700 1.60 4.25 × 104
800 1.82 4.86 × 104
900 2.05 5.46 × 104
1000 2.28 6.07 × 104
2000 4.56 1.21 × 105
2590 5.90 1.57 × 105
Steel I Beam: W6 × 9 (Wide Flange 6 inch tall × 9 lbf/ft)
L = 20.0 ft
P (lbf/ft) w_max (in) stress_max (psi)
9.00 0.0649 971
10.0 0.0721 1080
20.0 0.144 2160
30.0 0.216 3240
40.0 0.288 4320
50.0 0.360 5400
60.0 0.432 6480
70.0 0.504 7550
80.0 0.577 8630
90.0 0.649 9710
100 0.721 1.08 × 104
200 1.44 2.16 × 104
300 2.16 3.24 × 104
400 2.88 4.32 × 104
500 3.60 5.40 × 104
600 4.32 6.48 × 104
700 5.04 7.55 × 104
800 5.77 8.63 × 104
819 5.90 8.84 × 104
Steel I Beam: W6 × 9 (Wide Flange 6 inch tall × 9 lbf/ft)
L = 25.0 ft
P (lbf/ft) w_max (in) stress_max (psi)
9.00 0.158 1520
10.0 0.176 1690
20.0 0.352 3370
30.0 0.528 5060
40.0 0.704 6750
50.0 0.880 8430
60.0 1.06 1.01 × 104
70.0 1.23 1.18 × 104
80.0 1.41 1.35 × 104
90.0 1.58 1.52 × 104
100 1.76 1.69 × 104
200 3.52 3.37 × 104
300 5.28 5.06 × 104
335 5.90 5.65 × 104
Steel I Beam: W6 × 9 (Wide Flange 6 inch tall × 9 lbf/ft)
L = 30.0 ft
P (lbf/ft) w_max (in) stress_max (psi)
9.00 0.328 2190
10.0 0.365 2430
20.0 0.730 4860
30.0 1.09 7290
40.0 1.46 9710
50.0 1.82 1.21 × 104
60.0 2.19 1.46 × 104
70.0 2.55 1.70 × 104
80.0 2.92 1.94 × 104
90.0 3.28 2.19 × 104
100 3.65 2.43 × 104
162 5.90 3.93 × 104
Steel I Beam: W6 × 9 (Wide Flange 6 inch tall × 9 lbf/ft)
L = 40.0 ft
P (lbf/ft) w_max (in) stress_max (psi)
9.00 1.04 3890
10.0 1.15 4320
20.0 2.31 8630
30.0 3.46 1.30 × 104
40.0 4.61 1.73 × 104
50.0 5.77 2.16 × 104
51.2 5.90 2.21 × 104
Steel I Beam: W6 × 9 (Wide Flange 6 inch tall × 9 lbf/ft)
L = 50.0 ft
P (lbf/ft) w_max (in) stress_max (psi)
9.00 2.53 6070
10.0 2.82 6750
20.0 5.63 1.35 × 104
21.0 5.90 1.41 × 104
Steel I Beam: W6 × 9 (Wide Flange 6 inch tall × 9 lbf/ft)
L = 60.0 ft
P (lbf/ft) w_max (in) stress_max (psi)
9.00 5.25 8740
10.0 5.84 9710
10.1 5.90 9820
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