engineering fundamentals
Aluminum I Beam: 12.00 × 11.672
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Glossary » Beams » Simply Supported » Uniformly Distributed Load » Single Span » Aluminum I Beam » 12.00 × 11.672
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 = 255.57 in4) for the 12.00 × 11.672 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: 12.00 × 11.672 (12.00 inch tall × 11.672 lbf/ft)
L = 3.00 ft
P (lbf/ft) w_max (in) stress_max (psi)
11.7 8.20 × 10-6 3.70
20.0 1.40 × 10-5 6.34
30.0 2.11 × 10-5 9.51
40.0 2.81 × 10-5 12.7
50.0 3.51 × 10-5 15.8
60.0 4.21 × 10-5 19.0
70.0 4.92 × 10-5 22.2
80.0 5.62 × 10-5 25.4
90.0 6.32 × 10-5 28.5
100 7.02 × 10-5 31.7
200 1.40 × 10-4 63.4
300 2.11 × 10-4 95.1
400 2.81 × 10-4 127
500 3.51 × 10-4 158
600 4.21 × 10-4 190
700 4.92 × 10-4 222
800 5.62 × 10-4 254
900 6.32 × 10-4 285
1000 7.02 × 10-4 317
2000 0.00140 634
3000 0.00211 951
4000 0.00281 1270
5000 0.00351 1580
6000 0.00421 1900
7000 0.00492 2220
8000 0.00562 2540
9000 0.00632 2850
1.00 × 104 0.00702 3170
2.00 × 104 0.0140 6340
3.00 × 104 0.0211 9510
4.00 × 104 0.0281 1.27 × 104
5.00 × 104 0.0351 1.58 × 104
6.00 × 104 0.0421 1.90 × 104
7.00 × 104 0.0492 2.22 × 104
8.00 × 104 0.0562 2.54 × 104
9.00 × 104 0.0632 2.85 × 104
1.00 × 105 0.0702 3.17 × 104
2.00 × 105 0.140 6.34 × 104
2.40 × 105 0.169 7.61 × 104
Aluminum I Beam: 12.00 × 11.672 (12.00 inch tall × 11.672 lbf/ft)
L = 5.00 ft
P (lbf/ft) w_max (in) stress_max (psi)
11.7 6.33 × 10-5 10.3
20.0 1.08 × 10-4 17.6
30.0 1.63 × 10-4 26.4
40.0 2.17 × 10-4 35.2
50.0 2.71 × 10-4 44.0
60.0 3.25 × 10-4 52.8
70.0 3.79 × 10-4 61.6
80.0 4.34 × 10-4 70.4
90.0 4.88 × 10-4 79.2
100 5.42 × 10-4 88.0
200 0.00108 176
300 0.00163 264
400 0.00217 352
500 0.00271 440
600 0.00325 528
700 0.00379 616
800 0.00434 704
900 0.00488 792
1000 0.00542 880
2000 0.0108 1760
3000 0.0163 2640
4000 0.0217 3520
5000 0.0271 4400
6000 0.0325 5280
7000 0.0379 6160
8000 0.0434 7040
9000 0.0488 7920
1.00 × 104 0.0542 8800
2.00 × 104 0.108 1.76 × 104
3.00 × 104 0.163 2.64 × 104
4.00 × 104 0.217 3.52 × 104
5.00 × 104 0.271 4.40 × 104
6.00 × 104 0.325 5.28 × 104
7.00 × 104 0.379 6.16 × 104
8.00 × 104 0.434 7.04 × 104
8.65 × 104 0.469 7.61 × 104
Aluminum I Beam: 12.00 × 11.672 (12.00 inch tall × 11.672 lbf/ft)
L = 10.0 ft
P (lbf/ft) w_max (in) stress_max (psi)
11.7 0.00101 41.1
20.0 0.00173 70.4
30.0 0.00260 106
40.0 0.00347 141
50.0 0.00434 176
60.0 0.00520 211
70.0 0.00607 247
80.0 0.00694 282
90.0 0.00780 317
100 0.00867 352
200 0.0173 704
300 0.0260 1060
400 0.0347 1410
500 0.0434 1760
600 0.0520 2110
700 0.0607 2470
800 0.0694 2820
900 0.0780 3170
1000 0.0867 3520
2000 0.173 7040
3000 0.260 1.06 × 104
4000 0.347 1.41 × 104
5000 0.434 1.76 × 104
6000 0.520 2.11 × 104
7000 0.607 2.47 × 104
8000 0.694 2.82 × 104
9000 0.780 3.17 × 104
1.00 × 104 0.867 3.52 × 104
2.00 × 104 1.73 7.04 × 104
2.16 × 104 1.88 7.61 × 104
Aluminum I Beam: 12.00 × 11.672 (12.00 inch tall × 11.672 lbf/ft)
L = 15.0 ft
P (lbf/ft) w_max (in) stress_max (psi)
11.7 0.00512 92.5
20.0 0.00878 158
30.0 0.0132 238
40.0 0.0176 317
50.0 0.0219 396
60.0 0.0263 475
70.0 0.0307 555
80.0 0.0351 634
90.0 0.0395 713
100 0.0439 792
200 0.0878 1580
300 0.132 2380
400 0.176 3170
500 0.219 3960
600 0.263 4750
700 0.307 5550
800 0.351 6340
900 0.395 7130
1000 0.439 7920
2000 0.878 1.58 × 104
3000 1.32 2.38 × 104
4000 1.76 3.17 × 104
5000 2.19 3.96 × 104
6000 2.63 4.75 × 104
7000 3.07 5.55 × 104
8000 3.51 6.34 × 104
9000 3.95 7.13 × 104
9610 4.22 7.61 × 104
Aluminum I Beam: 12.00 × 11.672 (12.00 inch tall × 11.672 lbf/ft)
L = 20.0 ft
P (lbf/ft) w_max (in) stress_max (psi)
11.7 0.0162 164
20.0 0.0277 282
30.0 0.0416 423
40.0 0.0555 563
50.0 0.0694 704
60.0 0.0832 845
70.0 0.0971 986
80.0 0.111 1130
90.0 0.125 1270
100 0.139 1410
200 0.277 2820
300 0.416 4230
400 0.555 5630
500 0.694 7040
600 0.832 8450
700 0.971 9860
800 1.11 1.13 × 104
900 1.25 1.27 × 104
1000 1.39 1.41 × 104
2000 2.77 2.82 × 104
3000 4.16 4.23 × 104
4000 5.55 5.63 × 104
5000 6.94 7.04 × 104
5410 7.50 7.61 × 104
Aluminum I Beam: 12.00 × 11.672 (12.00 inch tall × 11.672 lbf/ft)
L = 25.0 ft
P (lbf/ft) w_max (in) stress_max (psi)
11.7 0.0395 257
20.0 0.0677 440
30.0 0.102 660
40.0 0.135 880
50.0 0.169 1100
60.0 0.203 1320
70.0 0.237 1540
80.0 0.271 1760
90.0 0.305 1980
100 0.339 2200
200 0.677 4400
300 1.02 6600
400 1.35 8800
500 1.69 1.10 × 104
600 2.03 1.32 × 104
700 2.37 1.54 × 104
800 2.71 1.76 × 104
900 3.05 1.98 × 104
1000 3.39 2.20 × 104
2000 6.77 4.40 × 104
3000 10.2 6.60 × 104
3460 11.7 7.61 × 104
Aluminum I Beam: 12.00 × 11.672 (12.00 inch tall × 11.672 lbf/ft)
L = 30.0 ft
P (lbf/ft) w_max (in) stress_max (psi)
11.7 0.0820 370
20.0 0.140 634
30.0 0.211 951
40.0 0.281 1270
50.0 0.351 1580
60.0 0.421 1900
70.0 0.492 2220
80.0 0.562 2540
90.0 0.632 2850
100 0.702 3170
200 1.40 6340
300 2.11 9510
400 2.81 1.27 × 104
500 3.51 1.58 × 104
600 4.21 1.90 × 104
700 4.92 2.22 × 104
800 5.62 2.54 × 104
900 6.32 2.85 × 104
1000 7.02 3.17 × 104
1710 12.0 5.41 × 104
Aluminum I Beam: 12.00 × 11.672 (12.00 inch tall × 11.672 lbf/ft)
L = 40.0 ft
P (lbf/ft) w_max (in) stress_max (psi)
11.7 0.259 658
20.0 0.444 1130
30.0 0.666 1690
40.0 0.888 2250
50.0 1.11 2820
60.0 1.33 3380
70.0 1.55 3940
80.0 1.78 4510
90.0 2.00 5070
100 2.22 5630
200 4.44 1.13 × 104
300 6.66 1.69 × 104
400 8.88 2.25 × 104
500 11.1 2.82 × 104
541 12.0 3.05 × 104
Aluminum I Beam: 12.00 × 11.672 (12.00 inch tall × 11.672 lbf/ft)
L = 50.0 ft
P (lbf/ft) w_max (in) stress_max (psi)
11.7 0.633 1030
20.0 1.08 1760
30.0 1.63 2640
40.0 2.17 3520
50.0 2.71 4400
60.0 3.25 5280
70.0 3.79 6160
80.0 4.34 7040
90.0 4.88 7920
100 5.42 8800
200 10.8 1.76 × 104
221 12.0 1.95 × 104
Aluminum I Beam: 12.00 × 11.672 (12.00 inch tall × 11.672 lbf/ft)
L = 60.0 ft
P (lbf/ft) w_max (in) stress_max (psi)
11.7 1.31 1480
20.0 2.25 2540
30.0 3.37 3800
40.0 4.50 5070
50.0 5.62 6340
60.0 6.74 7610
70.0 7.87 8870
80.0 8.99 1.01 × 104
90.0 10.1 1.14 × 104
100 11.2 1.27 × 104
107 12.0 1.35 × 104
Aluminum I Beam: 12.00 × 11.672 (12.00 inch tall × 11.672 lbf/ft)
L = 70.0 ft
P (lbf/ft) w_max (in) stress_max (psi)
11.7 2.43 2010
20.0 4.16 3450
30.0 6.25 5180
40.0 8.33 6900
50.0 10.4 8630
57.6 12.0 9950
Aluminum I Beam: 12.00 × 11.672 (12.00 inch tall × 11.672 lbf/ft)
L = 80.0 ft
P (lbf/ft) w_max (in) stress_max (psi)
11.7 4.15 2630
20.0 7.10 4510
30.0 10.7 6760
33.8 12.0 7610
Aluminum I Beam: 12.00 × 11.672 (12.00 inch tall × 11.672 lbf/ft)
L = 90.0 ft
P (lbf/ft) w_max (in) stress_max (psi)
11.7 6.64 3330
20.0 11.4 5700
21.1 12.0 6020
Aluminum I Beam: 12.00 × 11.672 (12.00 inch tall × 11.672 lbf/ft)
L = 100 ft
P (lbf/ft) w_max (in) stress_max (psi)
11.7 10.1 4110
13.8 12.0 4870
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