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Aluminum I Beam: 8.00 × 6.181
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Glossary » Beams » Simply Supported » Uniformly Distributed Load » Single Span » Aluminum I Beam » 8.00 × 6.181
Aluminum 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 = 59.69 in4) for the 8.00 × 6.181 Aluminum I Beam and the typical Young's modulus (E = 1.015 × 107 psi) of aluminum alloys. Note that the typical yielding stress Yield of aluminum alloys can range from 4061 to 7.614 × 104 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
  
Aluminum I Beam: 8.00 × 6.181 (8.00 inch tall × 6.181 lbf/ft)
L = 3.00 ft
P (lbf/ft) w_max (in) stress_max (psi)
6.18 1.86 × 10-5 5.59
7.00 2.11 × 10-5 6.33
8.00 2.41 × 10-5 7.24
9.00 2.71 × 10-5 8.14
10.0 3.01 × 10-5 9.05
20.0 6.01 × 10-5 18.1
30.0 9.02 × 10-5 27.1
40.0 1.20 × 10-4 36.2
50.0 1.50 × 10-4 45.2
60.0 1.80 × 10-4 54.3
70.0 2.11 × 10-4 63.3
80.0 2.41 × 10-4 72.4
90.0 2.71 × 10-4 81.4
100 3.01 × 10-4 90.5
200 6.01 × 10-4 181
300 9.02 × 10-4 271
400 0.00120 362
500 0.00150 452
600 0.00180 543
700 0.00211 633
800 0.00241 724
900 0.00271 814
1000 0.00301 905
2000 0.00601 1810
3000 0.00902 2710
4000 0.0120 3620
5000 0.0150 4520
6000 0.0180 5430
7000 0.0211 6330
8000 0.0241 7240
9000 0.0271 8140
1.00 × 104 0.0301 9050
2.00 × 104 0.0601 1.81 × 104
3.00 × 104 0.0902 2.71 × 104
4.00 × 104 0.120 3.62 × 104
5.00 × 104 0.150 4.52 × 104
6.00 × 104 0.180 5.43 × 104
7.00 × 104 0.211 6.33 × 104
8.00 × 104 0.241 7.24 × 104
8.42 × 104 0.253 7.61 × 104
Aluminum I Beam: 8.00 × 6.181 (8.00 inch tall × 6.181 lbf/ft)
L = 5.00 ft
P (lbf/ft) w_max (in) stress_max (psi)
6.18 1.43 × 10-4 15.5
7.00 1.62 × 10-4 17.6
8.00 1.86 × 10-4 20.1
9.00 2.09 × 10-4 22.6
10.0 2.32 × 10-4 25.1
20.0 4.64 × 10-4 50.3
30.0 6.96 × 10-4 75.4
40.0 9.28 × 10-4 101
50.0 0.00116 126
60.0 0.00139 151
70.0 0.00162 176
80.0 0.00186 201
90.0 0.00209 226
100 0.00232 251
200 0.00464 503
300 0.00696 754
400 0.00928 1010
500 0.0116 1260
600 0.0139 1510
700 0.0162 1760
800 0.0186 2010
900 0.0209 2260
1000 0.0232 2510
2000 0.0464 5030
3000 0.0696 7540
4000 0.0928 1.01 × 104
5000 0.116 1.26 × 104
6000 0.139 1.51 × 104
7000 0.162 1.76 × 104
8000 0.186 2.01 × 104
9000 0.209 2.26 × 104
1.00 × 104 0.232 2.51 × 104
2.00 × 104 0.464 5.03 × 104
3.00 × 104 0.696 7.54 × 104
3.03 × 104 0.703 7.61 × 104
Aluminum I Beam: 8.00 × 6.181 (8.00 inch tall × 6.181 lbf/ft)
L = 10.0 ft
P (lbf/ft) w_max (in) stress_max (psi)
6.18 0.00229 62.1
7.00 0.00260 70.4
8.00 0.00297 80.4
9.00 0.00334 90.5
10.0 0.00371 101
20.0 0.00743 201
30.0 0.0111 302
40.0 0.0149 402
50.0 0.0186 503
60.0 0.0223 603
70.0 0.0260 704
80.0 0.0297 804
90.0 0.0334 905
100 0.0371 1010
200 0.0743 2010
300 0.111 3020
400 0.149 4020
500 0.186 5030
600 0.223 6030
700 0.260 7040
800 0.297 8040
900 0.334 9050
1000 0.371 1.01 × 104
2000 0.743 2.01 × 104
3000 1.11 3.02 × 104
4000 1.49 4.02 × 104
5000 1.86 5.03 × 104
6000 2.23 6.03 × 104
7000 2.60 7.04 × 104
7580 2.81 7.61 × 104
Aluminum I Beam: 8.00 × 6.181 (8.00 inch tall × 6.181 lbf/ft)
L = 15.0 ft
P (lbf/ft) w_max (in) stress_max (psi)
6.18 0.0116 140
7.00 0.0132 158
8.00 0.0150 181
9.00 0.0169 204
10.0 0.0188 226
20.0 0.0376 452
30.0 0.0564 679
40.0 0.0752 905
50.0 0.0940 1130
60.0 0.113 1360
70.0 0.132 1580
80.0 0.150 1810
90.0 0.169 2040
100 0.188 2260
200 0.376 4520
300 0.564 6790
400 0.752 9050
500 0.940 1.13 × 104
600 1.13 1.36 × 104
700 1.32 1.58 × 104
800 1.50 1.81 × 104
900 1.69 2.04 × 104
1000 1.88 2.26 × 104
2000 3.76 4.52 × 104
3000 5.64 6.79 × 104
3370 6.33 7.61 × 104
Aluminum I Beam: 8.00 × 6.181 (8.00 inch tall × 6.181 lbf/ft)
L = 20.0 ft
P (lbf/ft) w_max (in) stress_max (psi)
6.18 0.0367 249
7.00 0.0416 281
8.00 0.0475 322
9.00 0.0535 362
10.0 0.0594 402
20.0 0.119 804
30.0 0.178 1210
40.0 0.238 1610
50.0 0.297 2010
60.0 0.356 2410
70.0 0.416 2810
80.0 0.475 3220
90.0 0.535 3620
100 0.594 4020
200 1.19 8040
300 1.78 1.21 × 104
400 2.38 1.61 × 104
500 2.97 2.01 × 104
600 3.56 2.41 × 104
700 4.16 2.81 × 104
800 4.75 3.22 × 104
900 5.35 3.62 × 104
1000 5.94 4.02 × 104
1890 11.3 7.61 × 104
Aluminum I Beam: 8.00 × 6.181 (8.00 inch tall × 6.181 lbf/ft)
L = 25.0 ft
P (lbf/ft) w_max (in) stress_max (psi)
6.18 0.0896 388
7.00 0.102 440
8.00 0.116 503
9.00 0.131 565
10.0 0.145 628
20.0 0.290 1260
30.0 0.435 1880
40.0 0.580 2510
50.0 0.725 3140
60.0 0.870 3770
70.0 1.02 4400
80.0 1.16 5030
90.0 1.31 5650
100 1.45 6280
200 2.90 1.26 × 104
300 4.35 1.88 × 104
400 5.80 2.51 × 104
500 7.25 3.14 × 104
552 8.00 3.47 × 104
Aluminum I Beam: 8.00 × 6.181 (8.00 inch tall × 6.181 lbf/ft)
L = 30.0 ft
P (lbf/ft) w_max (in) stress_max (psi)
6.18 0.186 559
7.00 0.211 633
8.00 0.241 724
9.00 0.271 814
10.0 0.301 905
20.0 0.601 1810
30.0 0.902 2710
40.0 1.20 3620
50.0 1.50 4520
60.0 1.80 5430
70.0 2.11 6330
80.0 2.41 7240
90.0 2.71 8140
100 3.01 9050
200 6.01 1.81 × 104
266 8.00 2.41 × 104
Aluminum I Beam: 8.00 × 6.181 (8.00 inch tall × 6.181 lbf/ft)
L = 40.0 ft
P (lbf/ft) w_max (in) stress_max (psi)
6.18 0.587 994
7.00 0.665 1130
8.00 0.760 1290
9.00 0.855 1450
10.0 0.950 1610
20.0 1.90 3220
30.0 2.85 4820
40.0 3.80 6430
50.0 4.75 8040
60.0 5.70 9650
70.0 6.65 1.13 × 104
80.0 7.60 1.29 × 104
84.2 8.00 1.35 × 104
Aluminum I Beam: 8.00 × 6.181 (8.00 inch tall × 6.181 lbf/ft)
L = 50.0 ft
P (lbf/ft) w_max (in) stress_max (psi)
6.18 1.43 1550
7.00 1.62 1760
8.00 1.86 2010
9.00 2.09 2260
10.0 2.32 2510
20.0 4.64 5030
30.0 6.96 7540
34.5 8.00 8660
Aluminum I Beam: 8.00 × 6.181 (8.00 inch tall × 6.181 lbf/ft)
L = 60.0 ft
P (lbf/ft) w_max (in) stress_max (psi)
6.18 2.97 2240
7.00 3.37 2530
8.00 3.85 2890
9.00 4.33 3260
10.0 4.81 3620
16.6 8.00 6020
Aluminum I Beam: 8.00 × 6.181 (8.00 inch tall × 6.181 lbf/ft)
L = 70.0 ft
P (lbf/ft) w_max (in) stress_max (psi)
6.18 5.51 3040
7.00 6.24 3450
8.00 7.13 3940
8.97 8.00 4420
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