engineering fundamentals
Aluminum I Beam: 10.00 × 8.646
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Glossary » Beams » Simply Supported » Uniformly Distributed Load » Two Equal Spans » Aluminum I Beam » 10.00 × 8.646
Aluminum 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 = 132.09 in4) for the 10.00 × 8.646 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
L = 80 ft
L = 90 ft
L = 100 ft
   
Aluminum I Beam: 10.00 × 8.646 (10.00 inch tall × 8.646 lbf/ft)
L = 3.00 ft
P (lbf/ft) w_mid (in) stress_max (psi)
8.65 4.70 × 10-6 4.42
9.00 4.89 × 10-6 4.60
10.0 5.44 × 10-6 5.11
20.0 1.09 × 10-5 10.2
30.0 1.63 × 10-5 15.3
40.0 2.17 × 10-5 20.4
50.0 2.72 × 10-5 25.6
60.0 3.26 × 10-5 30.7
70.0 3.81 × 10-5 35.8
80.0 4.35 × 10-5 40.9
90.0 4.89 × 10-5 46.0
100 5.44 × 10-5 51.1
200 1.09 × 10-4 102
300 1.63 × 10-4 153
400 2.17 × 10-4 204
500 2.72 × 10-4 256
600 3.26 × 10-4 307
700 3.81 × 10-4 358
800 4.35 × 10-4 409
900 4.89 × 10-4 460
1000 5.44 × 10-4 511
2000 0.00109 1020
3000 0.00163 1530
4000 0.00217 2040
5000 0.00272 2560
6000 0.00326 3070
7000 0.00381 3580
8000 0.00435 4090
9000 0.00489 4600
1.00 × 104 0.00544 5110
2.00 × 104 0.0109 1.02 × 104
3.00 × 104 0.0163 1.53 × 104
4.00 × 104 0.0217 2.04 × 104
5.00 × 104 0.0272 2.56 × 104
6.00 × 104 0.0326 3.07 × 104
7.00 × 104 0.0381 3.58 × 104
8.00 × 104 0.0435 4.09 × 104
9.00 × 104 0.0489 4.60 × 104
1.00 × 105 0.0544 5.11 × 104
1.49 × 105 0.0810 7.61 × 104
Aluminum I Beam: 10.00 × 8.646 (10.00 inch tall × 8.646 lbf/ft)
L = 5.00 ft
P (lbf/ft) w_mid (in) stress_max (psi)
8.65 3.63 × 10-5 12.3
9.00 3.77 × 10-5 12.8
10.0 4.19 × 10-5 14.2
20.0 8.39 × 10-5 28.4
30.0 1.26 × 10-4 42.6
40.0 1.68 × 10-4 56.8
50.0 2.10 × 10-4 71.0
60.0 2.52 × 10-4 85.2
70.0 2.94 × 10-4 99.4
80.0 3.36 × 10-4 114
90.0 3.77 × 10-4 128
100 4.19 × 10-4 142
200 8.39 × 10-4 284
300 0.00126 426
400 0.00168 568
500 0.00210 710
600 0.00252 852
700 0.00294 994
800 0.00336 1140
900 0.00377 1280
1000 0.00419 1420
2000 0.00839 2840
3000 0.0126 4260
4000 0.0168 5680
5000 0.0210 7100
6000 0.0252 8520
7000 0.0294 9940
8000 0.0336 1.14 × 104
9000 0.0377 1.28 × 104
1.00 × 104 0.0419 1.42 × 104
2.00 × 104 0.0839 2.84 × 104
3.00 × 104 0.126 4.26 × 104
4.00 × 104 0.168 5.68 × 104
5.00 × 104 0.210 7.10 × 104
5.36 × 104 0.225 7.61 × 104
Aluminum I Beam: 10.00 × 8.646 (10.00 inch tall × 8.646 lbf/ft)
L = 10.0 ft
P (lbf/ft) w_mid (in) stress_max (psi)
8.65 5.80 × 10-4 49.1
9.00 6.04 × 10-4 51.1
10.0 6.71 × 10-4 56.8
20.0 0.00134 114
30.0 0.00201 170
40.0 0.00268 227
50.0 0.00336 284
60.0 0.00403 341
70.0 0.00470 397
80.0 0.00537 454
90.0 0.00604 511
100 0.00671 568
200 0.0134 1140
300 0.0201 1700
400 0.0268 2270
500 0.0336 2840
600 0.0403 3410
700 0.0470 3970
800 0.0537 4540
900 0.0604 5110
1000 0.0671 5680
2000 0.134 1.14 × 104
3000 0.201 1.70 × 104
4000 0.268 2.27 × 104
5000 0.336 2.84 × 104
6000 0.403 3.41 × 104
7000 0.470 3.97 × 104
8000 0.537 4.54 × 104
9000 0.604 5.11 × 104
1.00 × 104 0.671 5.68 × 104
1.34 × 104 0.900 7.61 × 104
Aluminum I Beam: 10.00 × 8.646 (10.00 inch tall × 8.646 lbf/ft)
L = 15.0 ft
P (lbf/ft) w_mid (in) stress_max (psi)
8.65 0.00294 110
9.00 0.00306 115
10.0 0.00340 128
20.0 0.00679 256
30.0 0.0102 383
40.0 0.0136 511
50.0 0.0170 639
60.0 0.0204 767
70.0 0.0238 894
80.0 0.0272 1020
90.0 0.0306 1150
100 0.0340 1280
200 0.0679 2560
300 0.102 3830
400 0.136 5110
500 0.170 6390
600 0.204 7670
700 0.238 8940
800 0.272 1.02 × 104
900 0.306 1.15 × 104
1000 0.340 1.28 × 104
2000 0.679 2.56 × 104
3000 1.02 3.83 × 104
4000 1.36 5.11 × 104
5000 1.70 6.39 × 104
5960 2.03 7.61 × 104
Aluminum I Beam: 10.00 × 8.646 (10.00 inch tall × 8.646 lbf/ft)
L = 20.0 ft
P (lbf/ft) w_mid (in) stress_max (psi)
8.65 0.00928 196
9.00 0.00966 204
10.0 0.0107 227
20.0 0.0215 454
30.0 0.0322 681
40.0 0.0430 908
50.0 0.0537 1140
60.0 0.0644 1360
70.0 0.0752 1590
80.0 0.0859 1820
90.0 0.0966 2040
100 0.107 2270
200 0.215 4540
300 0.322 6810
400 0.430 9080
500 0.537 1.14 × 104
600 0.644 1.36 × 104
700 0.752 1.59 × 104
800 0.859 1.82 × 104
900 0.966 2.04 × 104
1000 1.07 2.27 × 104
2000 2.15 4.54 × 104
3000 3.22 6.81 × 104
3350 3.60 7.61 × 104
Aluminum I Beam: 10.00 × 8.646 (10.00 inch tall × 8.646 lbf/ft)
L = 25.0 ft
P (lbf/ft) w_mid (in) stress_max (psi)
8.65 0.0227 307
9.00 0.0236 319
10.0 0.0262 355
20.0 0.0524 710
30.0 0.0786 1060
40.0 0.105 1420
50.0 0.131 1770
60.0 0.157 2130
70.0 0.184 2480
80.0 0.210 2840
90.0 0.236 3190
100 0.262 3550
200 0.524 7100
300 0.786 1.06 × 104
400 1.05 1.42 × 104
500 1.31 1.77 × 104
600 1.57 2.13 × 104
700 1.84 2.48 × 104
800 2.10 2.84 × 104
900 2.36 3.19 × 104
1000 2.62 3.55 × 104
2000 5.24 7.10 × 104
2150 5.63 7.61 × 104
Aluminum I Beam: 10.00 × 8.646 (10.00 inch tall × 8.646 lbf/ft)
L = 30.0 ft
P (lbf/ft) w_mid (in) stress_max (psi)
8.65 0.0470 442
9.00 0.0489 460
10.0 0.0544 511
20.0 0.109 1020
30.0 0.163 1530
40.0 0.217 2040
50.0 0.272 2560
60.0 0.326 3070
70.0 0.381 3580
80.0 0.435 4090
90.0 0.489 4600
100 0.544 5110
200 1.09 1.02 × 104
300 1.63 1.53 × 104
400 2.17 2.04 × 104
500 2.72 2.56 × 104
600 3.26 3.07 × 104
700 3.81 3.58 × 104
800 4.35 4.09 × 104
900 4.89 4.60 × 104
1000 5.44 5.11 × 104
1490 8.10 7.61 × 104
Aluminum I Beam: 10.00 × 8.646 (10.00 inch tall × 8.646 lbf/ft)
L = 40.0 ft
P (lbf/ft) w_mid (in) stress_max (psi)
8.65 0.149 785
9.00 0.155 818
10.0 0.172 908
20.0 0.344 1820
30.0 0.515 2730
40.0 0.687 3630
50.0 0.859 4540
60.0 1.03 5450
70.0 1.20 6360
80.0 1.37 7270
90.0 1.55 8180
100 1.72 9080
200 3.44 1.82 × 104
300 5.15 2.73 × 104
400 6.87 3.63 × 104
500 8.59 4.54 × 104
582 10.0 5.29 × 104
Aluminum I Beam: 10.00 × 8.646 (10.00 inch tall × 8.646 lbf/ft)
L = 50.0 ft
P (lbf/ft) w_mid (in) stress_max (psi)
8.65 0.363 1230
9.00 0.377 1280
10.0 0.419 1420
20.0 0.839 2840
30.0 1.26 4260
40.0 1.68 5680
50.0 2.10 7100
60.0 2.52 8520
70.0 2.94 9940
80.0 3.36 1.14 × 104
90.0 3.77 1.28 × 104
100 4.19 1.42 × 104
200 8.39 2.84 × 104
238 10.0 3.38 × 104
Aluminum I Beam: 10.00 × 8.646 (10.00 inch tall × 8.646 lbf/ft)
L = 60.0 ft
P (lbf/ft) w_mid (in) stress_max (psi)
8.65 0.752 1770
9.00 0.783 1840
10.0 0.870 2040
20.0 1.74 4090
30.0 2.61 6130
40.0 3.48 8180
50.0 4.35 1.02 × 104
60.0 5.22 1.23 × 104
70.0 6.09 1.43 × 104
80.0 6.96 1.64 × 104
90.0 7.83 1.84 × 104
100 8.70 2.04 × 104
115 10.0 2.35 × 104
Aluminum I Beam: 10.00 × 8.646 (10.00 inch tall × 8.646 lbf/ft)
L = 70.0 ft
P (lbf/ft) w_mid (in) stress_max (psi)
8.65 1.39 2410
9.00 1.45 2500
10.0 1.61 2780
20.0 3.22 5560
30.0 4.83 8350
40.0 6.45 1.11 × 104
50.0 8.06 1.39 × 104
60.0 9.67 1.67 × 104
62.1 10.0 1.73 × 104
Aluminum I Beam: 10.00 × 8.646 (10.00 inch tall × 8.646 lbf/ft)
L = 80.0 ft
P (lbf/ft) w_mid (in) stress_max (psi)
8.65 2.38 3140
9.00 2.47 3270
10.0 2.75 3630
20.0 5.50 7270
30.0 8.25 1.09 × 104
36.4 10.0 1.32 × 104
Aluminum I Beam: 10.00 × 8.646 (10.00 inch tall × 8.646 lbf/ft)
L = 90.0 ft
P (lbf/ft) w_mid (in) stress_max (psi)
8.65 3.81 3980
9.00 3.96 4140
10.0 4.40 4600
20.0 8.81 9200
22.7 10.0 1.04 × 104
Aluminum I Beam: 10.00 × 8.646 (10.00 inch tall × 8.646 lbf/ft)
L = 100 ft
P (lbf/ft) w_mid (in) stress_max (psi)
8.65 5.80 4910
9.00 6.04 5110
10.0 6.71 5680
14.9 10.0 8460
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