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Glossary » Beams » Simply Supported » Uniformly Distributed Load » Three Equal Spans » Aluminum I Beam » 12.00 × 14.292
Aluminum I Beam | Single Span | Two Equal Spans | Three Equal Spans | Four Equal Spans

For a simply supported beam in three equal spans, we compute the displacement at the middle of the first and the third spans, and the maximum normal stress occuring at the second and third supports of the beam.
The tabulated data listed in this page are calculated based on the area moment of inertia (Ixx = 317.33 in4) for the 12.00 × 14.292 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 × 14.292 (12.00 inch tall × 14.292 lbf/ft) L = 3.00 ft (lbf/ft) (in) (psi) 14.3 4.22 × 10-6 2.92 20.0 5.91 × 10-6 4.08 30.0 8.86 × 10-6 6.13 40.0 1.18 × 10-5 8.17 50.0 1.48 × 10-5 10.2 60.0 1.77 × 10-5 12.3 70.0 2.07 × 10-5 14.3 80.0 2.36 × 10-5 16.3 90.0 2.66 × 10-5 18.4 100 2.95 × 10-5 20.4 200 5.91 × 10-5 40.8 300 8.86 × 10-5 61.3 400 1.18 × 10-4 81.7 500 1.48 × 10-4 102 600 1.77 × 10-4 123 700 2.07 × 10-4 143 800 2.36 × 10-4 163 900 2.66 × 10-4 184 1000 2.95 × 10-4 204 2000 5.91 × 10-4 408 3000 8.86 × 10-4 613 4000 0.00118 817 5000 0.00148 1020 6000 0.00177 1230 7000 0.00207 1430 8000 0.00236 1630 9000 0.00266 1840 1.00 × 104 0.00295 2040 2.00 × 104 0.00591 4080 3.00 × 104 0.00886 6130 4.00 × 104 0.0118 8170 5.00 × 104 0.0148 1.02 × 104 6.00 × 104 0.0177 1.23 × 104 7.00 × 104 0.0207 1.43 × 104 8.00 × 104 0.0236 1.63 × 104 9.00 × 104 0.0266 1.84 × 104 1.00 × 105 0.0295 2.04 × 104 2.00 × 105 0.0591 4.08 × 104 3.00 × 105 0.0886 6.13 × 104 3.73 × 105 0.110 7.61 × 104
 Aluminum I Beam: 12.00 × 14.292 (12.00 inch tall × 14.292 lbf/ft) L = 5.00 ft (lbf/ft) (in) (psi) 14.3 3.26 × 10-5 8.11 20.0 4.56 × 10-5 11.3 30.0 6.84 × 10-5 17.0 40.0 9.12 × 10-5 22.7 50.0 1.14 × 10-4 28.4 60.0 1.37 × 10-4 34.0 70.0 1.60 × 10-4 39.7 80.0 1.82 × 10-4 45.4 90.0 2.05 × 10-4 51.1 100 2.28 × 10-4 56.7 200 4.56 × 10-4 113 300 6.84 × 10-4 170 400 9.12 × 10-4 227 500 0.00114 284 600 0.00137 340 700 0.00160 397 800 0.00182 454 900 0.00205 511 1000 0.00228 567 2000 0.00456 1130 3000 0.00684 1700 4000 0.00912 2270 5000 0.0114 2840 6000 0.0137 3400 7000 0.0160 3970 8000 0.0182 4540 9000 0.0205 5110 1.00 × 104 0.0228 5670 2.00 × 104 0.0456 1.13 × 104 3.00 × 104 0.0684 1.70 × 104 4.00 × 104 0.0912 2.27 × 104 5.00 × 104 0.114 2.84 × 104 6.00 × 104 0.137 3.40 × 104 7.00 × 104 0.160 3.97 × 104 8.00 × 104 0.182 4.54 × 104 9.00 × 104 0.205 5.11 × 104 1.00 × 105 0.228 5.67 × 104 1.34 × 105 0.306 7.61 × 104
 Aluminum I Beam: 12.00 × 14.292 (12.00 inch tall × 14.292 lbf/ft) L = 10.0 ft (lbf/ft) (in) (psi) 14.3 5.21 × 10-4 32.4 20.0 7.29 × 10-4 45.4 30.0 0.00109 68.1 40.0 0.00146 90.8 50.0 0.00182 113 60.0 0.00219 136 70.0 0.00255 159 80.0 0.00292 182 90.0 0.00328 204 100 0.00365 227 200 0.00729 454 300 0.0109 681 400 0.0146 908 500 0.0182 1130 600 0.0219 1360 700 0.0255 1590 800 0.0292 1820 900 0.0328 2040 1000 0.0365 2270 2000 0.0729 4540 3000 0.109 6810 4000 0.146 9080 5000 0.182 1.13 × 104 6000 0.219 1.36 × 104 7000 0.255 1.59 × 104 8000 0.292 1.82 × 104 9000 0.328 2.04 × 104 1.00 × 104 0.365 2.27 × 104 2.00 × 104 0.729 4.54 × 104 3.00 × 104 1.09 6.81 × 104 3.36 × 104 1.22 7.61 × 104
 Aluminum I Beam: 12.00 × 14.292 (12.00 inch tall × 14.292 lbf/ft) L = 15.0 ft (lbf/ft) (in) (psi) 14.3 0.00264 73.0 20.0 0.00369 102 30.0 0.00554 153 40.0 0.00739 204 50.0 0.00923 255 60.0 0.0111 306 70.0 0.0129 357 80.0 0.0148 408 90.0 0.0166 459 100 0.0185 511 200 0.0369 1020 300 0.0554 1530 400 0.0739 2040 500 0.0923 2550 600 0.111 3060 700 0.129 3570 800 0.148 4080 900 0.166 4590 1000 0.185 5110 2000 0.369 1.02 × 104 3000 0.554 1.53 × 104 4000 0.739 2.04 × 104 5000 0.923 2.55 × 104 6000 1.11 3.06 × 104 7000 1.29 3.57 × 104 8000 1.48 4.08 × 104 9000 1.66 4.59 × 104 1.00 × 104 1.85 5.11 × 104 1.49 × 104 2.75 7.61 × 104
 Aluminum I Beam: 12.00 × 14.292 (12.00 inch tall × 14.292 lbf/ft) L = 20.0 ft (lbf/ft) (in) (psi) 14.3 0.00834 130 20.0 0.0117 182 30.0 0.0175 272 40.0 0.0233 363 50.0 0.0292 454 60.0 0.0350 545 70.0 0.0408 635 80.0 0.0467 726 90.0 0.0525 817 100 0.0584 908 200 0.117 1820 300 0.175 2720 400 0.233 3630 500 0.292 4540 600 0.350 5450 700 0.408 6350 800 0.467 7260 900 0.525 8170 1000 0.584 9080 2000 1.17 1.82 × 104 3000 1.75 2.72 × 104 4000 2.33 3.63 × 104 5000 2.92 4.54 × 104 6000 3.50 5.45 × 104 7000 4.08 6.35 × 104 8000 4.67 7.26 × 104 8390 4.90 7.61 × 104
 Aluminum I Beam: 12.00 × 14.292 (12.00 inch tall × 14.292 lbf/ft) L = 25.0 ft (lbf/ft) (in) (psi) 14.3 0.0204 203 20.0 0.0285 284 30.0 0.0427 425 40.0 0.0570 567 50.0 0.0712 709 60.0 0.0855 851 70.0 0.0997 993 80.0 0.114 1130 90.0 0.128 1280 100 0.142 1420 200 0.285 2840 300 0.427 4250 400 0.570 5670 500 0.712 7090 600 0.855 8510 700 0.997 9930 800 1.14 1.13 × 104 900 1.28 1.28 × 104 1000 1.42 1.42 × 104 2000 2.85 2.84 × 104 3000 4.27 4.25 × 104 4000 5.70 5.67 × 104 5000 7.12 7.09 × 104 5370 7.65 7.61 × 104
 Aluminum I Beam: 12.00 × 14.292 (12.00 inch tall × 14.292 lbf/ft) L = 30.0 ft (lbf/ft) (in) (psi) 14.3 0.0422 292 20.0 0.0591 408 30.0 0.0886 613 40.0 0.118 817 50.0 0.148 1020 60.0 0.177 1230 70.0 0.207 1430 80.0 0.236 1630 90.0 0.266 1840 100 0.295 2040 200 0.591 4080 300 0.886 6130 400 1.18 8170 500 1.48 1.02 × 104 600 1.77 1.23 × 104 700 2.07 1.43 × 104 800 2.36 1.63 × 104 900 2.66 1.84 × 104 1000 2.95 2.04 × 104 2000 5.91 4.08 × 104 3000 8.86 6.13 × 104 3730 11.0 7.61 × 104
 Aluminum I Beam: 12.00 × 14.292 (12.00 inch tall × 14.292 lbf/ft) L = 40.0 ft (lbf/ft) (in) (psi) 14.3 0.133 519 20.0 0.187 726 30.0 0.280 1090 40.0 0.373 1450 50.0 0.467 1820 60.0 0.560 2180 70.0 0.654 2540 80.0 0.747 2900 90.0 0.840 3270 100 0.934 3630 200 1.87 7260 300 2.80 1.09 × 104 400 3.73 1.45 × 104 500 4.67 1.82 × 104 600 5.60 2.18 × 104 700 6.54 2.54 × 104 800 7.47 2.90 × 104 900 8.40 3.27 × 104 1000 9.34 3.63 × 104 1290 12.0 4.67 × 104
 Aluminum I Beam: 12.00 × 14.292 (12.00 inch tall × 14.292 lbf/ft) L = 50.0 ft (lbf/ft) (in) (psi) 14.3 0.326 811 20.0 0.456 1130 30.0 0.684 1700 40.0 0.912 2270 50.0 1.14 2840 60.0 1.37 3400 70.0 1.60 3970 80.0 1.82 4540 90.0 2.05 5110 100 2.28 5670 200 4.56 1.13 × 104 300 6.84 1.70 × 104 400 9.12 2.27 × 104 500 11.4 2.84 × 104 526 12.0 2.99 × 104
 Aluminum I Beam: 12.00 × 14.292 (12.00 inch tall × 14.292 lbf/ft) L = 60.0 ft (lbf/ft) (in) (psi) 14.3 0.676 1170 20.0 0.945 1630 30.0 1.42 2450 40.0 1.89 3270 50.0 2.36 4080 60.0 2.84 4900 70.0 3.31 5720 80.0 3.78 6530 90.0 4.25 7350 100 4.73 8170 200 9.45 1.63 × 104 254 12.0 2.07 × 104
 Aluminum I Beam: 12.00 × 14.292 (12.00 inch tall × 14.292 lbf/ft) L = 70.0 ft (lbf/ft) (in) (psi) 14.3 1.25 1590 20.0 1.75 2220 30.0 2.63 3340 40.0 3.50 4450 50.0 4.38 5560 60.0 5.25 6670 70.0 6.13 7780 80.0 7.01 8890 90.0 7.88 1.00 × 104 100 8.76 1.11 × 104 137 12.0 1.52 × 104
 Aluminum I Beam: 12.00 × 14.292 (12.00 inch tall × 14.292 lbf/ft) L = 80.0 ft (lbf/ft) (in) (psi) 14.3 2.14 2080 20.0 2.99 2900 30.0 4.48 4360 40.0 5.98 5810 50.0 7.47 7260 60.0 8.96 8710 70.0 10.5 1.02 × 104 80.0 12.0 1.16 × 104 80.3 12.0 1.17 × 104
 Aluminum I Beam: 12.00 × 14.292 (12.00 inch tall × 14.292 lbf/ft) L = 90.0 ft (lbf/ft) (in) (psi) 14.3 3.42 2630 20.0 4.79 3680 30.0 7.18 5510 40.0 9.57 7350 50.0 12.0 9190 50.1 12.0 9220
 Aluminum I Beam: 12.00 × 14.292 (12.00 inch tall × 14.292 lbf/ft) L = 100 ft (lbf/ft) (in) (psi) 14.3 5.21 3240 20.0 7.29 4540 30.0 10.9 6810 32.9 12.0 7470