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Glossary » Beams » Simply Supported » Uniformly Distributed Load » Two Equal Spans » 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 two equal spans, we compute the displacement at the middle of each span and the maximum normal stress 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 = 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 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.

 Aluminum I Beam: 12.00 × 11.672 (12.00 inch tall × 11.672 lbf/ft) L = 3.00 ft (lbf/ft) (in) (psi) 11.7 3.28 × 10-6 3.70 20.0 5.62 × 10-6 6.34 30.0 8.43 × 10-6 9.51 40.0 1.12 × 10-5 12.7 50.0 1.40 × 10-5 15.8 60.0 1.69 × 10-5 19.0 70.0 1.97 × 10-5 22.2 80.0 2.25 × 10-5 25.4 90.0 2.53 × 10-5 28.5 100 2.81 × 10-5 31.7 200 5.62 × 10-5 63.4 300 8.43 × 10-5 95.1 400 1.12 × 10-4 127 500 1.40 × 10-4 158 600 1.69 × 10-4 190 700 1.97 × 10-4 222 800 2.25 × 10-4 254 900 2.53 × 10-4 285 1000 2.81 × 10-4 317 2000 5.62 × 10-4 634 3000 8.43 × 10-4 951 4000 0.00112 1270 5000 0.00140 1580 6000 0.00169 1900 7000 0.00197 2220 8000 0.00225 2540 9000 0.00253 2850 1.00 × 104 0.00281 3170 2.00 × 104 0.00562 6340 3.00 × 104 0.00843 9510 4.00 × 104 0.0112 1.27 × 104 5.00 × 104 0.0140 1.58 × 104 6.00 × 104 0.0169 1.90 × 104 7.00 × 104 0.0197 2.22 × 104 8.00 × 104 0.0225 2.54 × 104 9.00 × 104 0.0253 2.85 × 104 1.00 × 105 0.0281 3.17 × 104 2.00 × 105 0.0562 6.34 × 104 2.40 × 105 0.0675 7.61 × 104
 Aluminum I Beam: 12.00 × 11.672 (12.00 inch tall × 11.672 lbf/ft) L = 5.00 ft (lbf/ft) (in) (psi) 11.7 2.53 × 10-5 10.3 20.0 4.34 × 10-5 17.6 30.0 6.50 × 10-5 26.4 40.0 8.67 × 10-5 35.2 50.0 1.08 × 10-4 44.0 60.0 1.30 × 10-4 52.8 70.0 1.52 × 10-4 61.6 80.0 1.73 × 10-4 70.4 90.0 1.95 × 10-4 79.2 100 2.17 × 10-4 88.0 200 4.34 × 10-4 176 300 6.50 × 10-4 264 400 8.67 × 10-4 352 500 0.00108 440 600 0.00130 528 700 0.00152 616 800 0.00173 704 900 0.00195 792 1000 0.00217 880 2000 0.00434 1760 3000 0.00650 2640 4000 0.00867 3520 5000 0.0108 4400 6000 0.0130 5280 7000 0.0152 6160 8000 0.0173 7040 9000 0.0195 7920 1.00 × 104 0.0217 8800 2.00 × 104 0.0434 1.76 × 104 3.00 × 104 0.0650 2.64 × 104 4.00 × 104 0.0867 3.52 × 104 5.00 × 104 0.108 4.40 × 104 6.00 × 104 0.130 5.28 × 104 7.00 × 104 0.152 6.16 × 104 8.00 × 104 0.173 7.04 × 104 8.65 × 104 0.188 7.61 × 104
 Aluminum I Beam: 12.00 × 11.672 (12.00 inch tall × 11.672 lbf/ft) L = 10.0 ft (lbf/ft) (in) (psi) 11.7 4.05 × 10-4 41.1 20.0 6.94 × 10-4 70.4 30.0 0.00104 106 40.0 0.00139 141 50.0 0.00173 176 60.0 0.00208 211 70.0 0.00243 247 80.0 0.00277 282 90.0 0.00312 317 100 0.00347 352 200 0.00694 704 300 0.0104 1060 400 0.0139 1410 500 0.0173 1760 600 0.0208 2110 700 0.0243 2470 800 0.0277 2820 900 0.0312 3170 1000 0.0347 3520 2000 0.0694 7040 3000 0.104 1.06 × 104 4000 0.139 1.41 × 104 5000 0.173 1.76 × 104 6000 0.208 2.11 × 104 7000 0.243 2.47 × 104 8000 0.277 2.82 × 104 9000 0.312 3.17 × 104 1.00 × 104 0.347 3.52 × 104 2.00 × 104 0.694 7.04 × 104 2.16 × 104 0.750 7.61 × 104
 Aluminum I Beam: 12.00 × 11.672 (12.00 inch tall × 11.672 lbf/ft) L = 15.0 ft (lbf/ft) (in) (psi) 11.7 0.00205 92.5 20.0 0.00351 158 30.0 0.00527 238 40.0 0.00702 317 50.0 0.00878 396 60.0 0.0105 475 70.0 0.0123 555 80.0 0.0140 634 90.0 0.0158 713 100 0.0176 792 200 0.0351 1580 300 0.0527 2380 400 0.0702 3170 500 0.0878 3960 600 0.105 4750 700 0.123 5550 800 0.140 6340 900 0.158 7130 1000 0.176 7920 2000 0.351 1.58 × 104 3000 0.527 2.38 × 104 4000 0.702 3.17 × 104 5000 0.878 3.96 × 104 6000 1.05 4.75 × 104 7000 1.23 5.55 × 104 8000 1.40 6.34 × 104 9000 1.58 7.13 × 104 9610 1.69 7.61 × 104
 Aluminum I Beam: 12.00 × 11.672 (12.00 inch tall × 11.672 lbf/ft) L = 20.0 ft (lbf/ft) (in) (psi) 11.7 0.00648 164 20.0 0.0111 282 30.0 0.0166 423 40.0 0.0222 563 50.0 0.0277 704 60.0 0.0333 845 70.0 0.0388 986 80.0 0.0444 1130 90.0 0.0499 1270 100 0.0555 1410 200 0.111 2820 300 0.166 4230 400 0.222 5630 500 0.277 7040 600 0.333 8450 700 0.388 9860 800 0.444 1.13 × 104 900 0.499 1.27 × 104 1000 0.555 1.41 × 104 2000 1.11 2.82 × 104 3000 1.66 4.23 × 104 4000 2.22 5.63 × 104 5000 2.77 7.04 × 104 5410 3.00 7.61 × 104
 Aluminum I Beam: 12.00 × 11.672 (12.00 inch tall × 11.672 lbf/ft) L = 25.0 ft (lbf/ft) (in) (psi) 11.7 0.0158 257 20.0 0.0271 440 30.0 0.0406 660 40.0 0.0542 880 50.0 0.0677 1100 60.0 0.0813 1320 70.0 0.0948 1540 80.0 0.108 1760 90.0 0.122 1980 100 0.135 2200 200 0.271 4400 300 0.406 6600 400 0.542 8800 500 0.677 1.10 × 104 600 0.813 1.32 × 104 700 0.948 1.54 × 104 800 1.08 1.76 × 104 900 1.22 1.98 × 104 1000 1.35 2.20 × 104 2000 2.71 4.40 × 104 3000 4.06 6.60 × 104 3460 4.69 7.61 × 104
 Aluminum I Beam: 12.00 × 11.672 (12.00 inch tall × 11.672 lbf/ft) L = 30.0 ft (lbf/ft) (in) (psi) 11.7 0.0328 370 20.0 0.0562 634 30.0 0.0843 951 40.0 0.112 1270 50.0 0.140 1580 60.0 0.169 1900 70.0 0.197 2220 80.0 0.225 2540 90.0 0.253 2850 100 0.281 3170 200 0.562 6340 300 0.843 9510 400 1.12 1.27 × 104 500 1.40 1.58 × 104 600 1.69 1.90 × 104 700 1.97 2.22 × 104 800 2.25 2.54 × 104 900 2.53 2.85 × 104 1000 2.81 3.17 × 104 2000 5.62 6.34 × 104 2400 6.75 7.61 × 104
 Aluminum I Beam: 12.00 × 11.672 (12.00 inch tall × 11.672 lbf/ft) L = 40.0 ft (lbf/ft) (in) (psi) 11.7 0.104 658 20.0 0.178 1130 30.0 0.266 1690 40.0 0.355 2250 50.0 0.444 2820 60.0 0.533 3380 70.0 0.622 3940 80.0 0.710 4510 90.0 0.799 5070 100 0.888 5630 200 1.78 1.13 × 104 300 2.66 1.69 × 104 400 3.55 2.25 × 104 500 4.44 2.82 × 104 600 5.33 3.38 × 104 700 6.22 3.94 × 104 800 7.10 4.51 × 104 900 7.99 5.07 × 104 1000 8.88 5.63 × 104 1350 12.0 7.61 × 104
 Aluminum I Beam: 12.00 × 11.672 (12.00 inch tall × 11.672 lbf/ft) L = 50.0 ft (lbf/ft) (in) (psi) 11.7 0.253 1030 20.0 0.434 1760 30.0 0.650 2640 40.0 0.867 3520 50.0 1.08 4400 60.0 1.30 5280 70.0 1.52 6160 80.0 1.73 7040 90.0 1.95 7920 100 2.17 8800 200 4.34 1.76 × 104 300 6.50 2.64 × 104 400 8.67 3.52 × 104 500 10.8 4.40 × 104 554 12.0 4.87 × 104
 Aluminum I Beam: 12.00 × 11.672 (12.00 inch tall × 11.672 lbf/ft) L = 60.0 ft (lbf/ft) (in) (psi) 11.7 0.525 1480 20.0 0.899 2540 30.0 1.35 3800 40.0 1.80 5070 50.0 2.25 6340 60.0 2.70 7610 70.0 3.15 8870 80.0 3.60 1.01 × 104 90.0 4.05 1.14 × 104 100 4.50 1.27 × 104 200 8.99 2.54 × 104 267 12.0 3.38 × 104
 Aluminum I Beam: 12.00 × 11.672 (12.00 inch tall × 11.672 lbf/ft) L = 70.0 ft (lbf/ft) (in) (psi) 11.7 0.972 2010 20.0 1.67 3450 30.0 2.50 5180 40.0 3.33 6900 50.0 4.16 8630 60.0 5.00 1.04 × 104 70.0 5.83 1.21 × 104 80.0 6.66 1.38 × 104 90.0 7.50 1.55 × 104 100 8.33 1.73 × 104 144 12.0 2.49 × 104
 Aluminum I Beam: 12.00 × 11.672 (12.00 inch tall × 11.672 lbf/ft) L = 80.0 ft (lbf/ft) (in) (psi) 11.7 1.66 2630 20.0 2.84 4510 30.0 4.26 6760 40.0 5.68 9020 50.0 7.10 1.13 × 104 60.0 8.52 1.35 × 104 70.0 9.95 1.58 × 104 80.0 11.4 1.80 × 104 84.5 12.0 1.90 × 104
 Aluminum I Beam: 12.00 × 11.672 (12.00 inch tall × 11.672 lbf/ft) L = 90.0 ft (lbf/ft) (in) (psi) 11.7 2.66 3330 20.0 4.55 5700 30.0 6.83 8560 40.0 9.10 1.14 × 104 50.0 11.4 1.43 × 104 52.7 12.0 1.50 × 104
 Aluminum I Beam: 12.00 × 11.672 (12.00 inch tall × 11.672 lbf/ft) L = 100 ft (lbf/ft) (in) (psi) 11.7 4.05 4110 20.0 6.94 7040 30.0 10.4 1.06 × 104 34.6 12.0 1.22 × 104
 Aluminum I Beam: 12.00 × 11.672 (12.00 inch tall × 11.672 lbf/ft) L = 125 ft (lbf/ft) (in) (psi) 11.7 9.88 6420 14.2 12.0 7800
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