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Glossary » Beams » Simply Supported » Uniformly Distributed Load » Two Equal Spans » Aluminum I Beam » 3.00 × 1.637
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 = 2.24 in4) for the 3.00 × 1.637 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: 3.00 × 1.637 (3.00 inch tall × 1.637 lbf/ft) L = 3.00 ft (lbf/ft) (in) (psi) 1.64 5.25 × 10-5 14.8 2.00 6.41 × 10-5 18.1 3.00 9.62 × 10-5 27.1 4.00 1.28 × 10-4 36.2 5.00 1.60 × 10-4 45.2 6.00 1.92 × 10-4 54.2 7.00 2.24 × 10-4 63.3 8.00 2.56 × 10-4 72.3 9.00 2.88 × 10-4 81.4 10.0 3.21 × 10-4 90.4 20.0 6.41 × 10-4 181 30.0 9.62 × 10-4 271 40.0 0.00128 362 50.0 0.00160 452 60.0 0.00192 542 70.0 0.00224 633 80.0 0.00256 723 90.0 0.00288 814 100 0.00321 904 200 0.00641 1810 300 0.00962 2710 400 0.0128 3620 500 0.0160 4520 600 0.0192 5420 700 0.0224 6330 800 0.0256 7230 900 0.0288 8140 1000 0.0321 9040 2000 0.0641 1.81 × 104 3000 0.0962 2.71 × 104 4000 0.128 3.62 × 104 5000 0.160 4.52 × 104 6000 0.192 5.42 × 104 7000 0.224 6.33 × 104 8000 0.256 7.23 × 104 8420 0.270 7.61 × 104
 Aluminum I Beam: 3.00 × 1.637 (3.00 inch tall × 1.637 lbf/ft) L = 5.00 ft (lbf/ft) (in) (psi) 1.64 4.05 × 10-4 41.1 2.00 4.95 × 10-4 50.2 3.00 7.42 × 10-4 75.3 4.00 9.89 × 10-4 100 5.00 0.00124 126 6.00 0.00148 151 7.00 0.00173 176 8.00 0.00198 201 9.00 0.00223 226 10.0 0.00247 251 20.0 0.00495 502 30.0 0.00742 753 40.0 0.00989 1000 50.0 0.0124 1260 60.0 0.0148 1510 70.0 0.0173 1760 80.0 0.0198 2010 90.0 0.0223 2260 100 0.0247 2510 200 0.0495 5020 300 0.0742 7530 400 0.0989 1.00 × 104 500 0.124 1.26 × 104 600 0.148 1.51 × 104 700 0.173 1.76 × 104 800 0.198 2.01 × 104 900 0.223 2.26 × 104 1000 0.247 2.51 × 104 2000 0.495 5.02 × 104 3000 0.742 7.53 × 104 3030 0.750 7.61 × 104
 Aluminum I Beam: 3.00 × 1.637 (3.00 inch tall × 1.637 lbf/ft) L = 10.0 ft (lbf/ft) (in) (psi) 1.64 0.00648 164 2.00 0.00791 201 3.00 0.0119 301 4.00 0.0158 402 5.00 0.0198 502 6.00 0.0237 603 7.00 0.0277 703 8.00 0.0317 804 9.00 0.0356 904 10.0 0.0396 1000 20.0 0.0791 2010 30.0 0.119 3010 40.0 0.158 4020 50.0 0.198 5020 60.0 0.237 6030 70.0 0.277 7030 80.0 0.317 8040 90.0 0.356 9040 100 0.396 1.00 × 104 200 0.791 2.01 × 104 300 1.19 3.01 × 104 400 1.58 4.02 × 104 500 1.98 5.02 × 104 600 2.37 6.03 × 104 700 2.77 7.03 × 104 758 3.00 7.61 × 104
 Aluminum I Beam: 3.00 × 1.637 (3.00 inch tall × 1.637 lbf/ft) L = 15.0 ft (lbf/ft) (in) (psi) 1.64 0.0328 370 2.00 0.0401 452 3.00 0.0601 678 4.00 0.0801 904 5.00 0.100 1130 6.00 0.120 1360 7.00 0.140 1580 8.00 0.160 1810 9.00 0.180 2030 10.0 0.200 2260 20.0 0.401 4520 30.0 0.601 6780 40.0 0.801 9040 50.0 1.00 1.13 × 104 60.0 1.20 1.36 × 104 70.0 1.40 1.58 × 104 80.0 1.60 1.81 × 104 90.0 1.80 2.03 × 104 100 2.00 2.26 × 104 150 3.00 3.38 × 104
 Aluminum I Beam: 3.00 × 1.637 (3.00 inch tall × 1.637 lbf/ft) L = 20.0 ft (lbf/ft) (in) (psi) 1.64 0.104 658 2.00 0.127 804 3.00 0.190 1210 4.00 0.253 1610 5.00 0.317 2010 6.00 0.380 2410 7.00 0.443 2810 8.00 0.507 3210 9.00 0.570 3620 10.0 0.633 4020 20.0 1.27 8040 30.0 1.90 1.21 × 104 40.0 2.53 1.61 × 104 47.4 3.00 1.90 × 104
 Aluminum I Beam: 3.00 × 1.637 (3.00 inch tall × 1.637 lbf/ft) L = 25.0 ft (lbf/ft) (in) (psi) 1.64 0.253 1030 2.00 0.309 1260 3.00 0.464 1880 4.00 0.618 2510 5.00 0.773 3140 6.00 0.928 3770 7.00 1.08 4390 8.00 1.24 5020 9.00 1.39 5650 10.0 1.55 6280 19.4 3.00 1.22 × 104
 Aluminum I Beam: 3.00 × 1.637 (3.00 inch tall × 1.637 lbf/ft) L = 30.0 ft (lbf/ft) (in) (psi) 1.64 0.525 1480 2.00 0.641 1810 3.00 0.962 2710 4.00 1.28 3620 5.00 1.60 4520 6.00 1.92 5420 7.00 2.24 6330 8.00 2.56 7230 9.00 2.88 8140 9.36 3.00 8460
 Aluminum I Beam: 3.00 × 1.637 (3.00 inch tall × 1.637 lbf/ft) L = 40.0 ft (lbf/ft) (in) (psi) 1.64 1.66 2630 2.00 2.03 3210 2.96 3.00 4760
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