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Glossary » Beams » Simply Supported » Uniformly Distributed Load » Two Equal Spans » Aluminum I Beam » 4.00 × 2.793
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 = 6.71 in4) for the 4.00 × 2.793 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: 4.00 × 2.793 (4.00 inch tall × 2.793 lbf/ft) L = 3.00 ft (lbf/ft) (in) (psi) 2.79 2.99 × 10-5 11.2 3.00 3.21 × 10-5 12.1 4.00 4.28 × 10-5 16.1 5.00 5.35 × 10-5 20.1 6.00 6.42 × 10-5 24.1 7.00 7.49 × 10-5 28.2 8.00 8.56 × 10-5 32.2 9.00 9.63 × 10-5 36.2 10.0 1.07 × 10-4 40.2 20.0 2.14 × 10-4 80.5 30.0 3.21 × 10-4 121 40.0 4.28 × 10-4 161 50.0 5.35 × 10-4 201 60.0 6.42 × 10-4 241 70.0 7.49 × 10-4 282 80.0 8.56 × 10-4 322 90.0 9.63 × 10-4 362 100 0.00107 402 200 0.00214 805 300 0.00321 1210 400 0.00428 1610 500 0.00535 2010 600 0.00642 2410 700 0.00749 2820 800 0.00856 3220 900 0.00963 3620 1000 0.0107 4020 2000 0.0214 8050 3000 0.0321 1.21 × 104 4000 0.0428 1.61 × 104 5000 0.0535 2.01 × 104 6000 0.0642 2.41 × 104 7000 0.0749 2.82 × 104 8000 0.0856 3.22 × 104 9000 0.0963 3.62 × 104 1.00 × 104 0.107 4.02 × 104 1.89 × 104 0.202 7.61 × 104
 Aluminum I Beam: 4.00 × 2.793 (4.00 inch tall × 2.793 lbf/ft) L = 5.00 ft (lbf/ft) (in) (psi) 2.79 2.31 × 10-4 31.2 3.00 2.48 × 10-4 33.5 4.00 3.30 × 10-4 44.7 5.00 4.13 × 10-4 55.9 6.00 4.95 × 10-4 67.1 7.00 5.78 × 10-4 78.2 8.00 6.61 × 10-4 89.4 9.00 7.43 × 10-4 101 10.0 8.26 × 10-4 112 20.0 0.00165 224 30.0 0.00248 335 40.0 0.00330 447 50.0 0.00413 559 60.0 0.00495 671 70.0 0.00578 782 80.0 0.00661 894 90.0 0.00743 1010 100 0.00826 1120 200 0.0165 2240 300 0.0248 3350 400 0.0330 4470 500 0.0413 5590 600 0.0495 6710 700 0.0578 7820 800 0.0661 8940 900 0.0743 1.01 × 104 1000 0.0826 1.12 × 104 2000 0.165 2.24 × 104 3000 0.248 3.35 × 104 4000 0.330 4.47 × 104 5000 0.413 5.59 × 104 6000 0.495 6.71 × 104 6810 0.562 7.61 × 104
 Aluminum I Beam: 4.00 × 2.793 (4.00 inch tall × 2.793 lbf/ft) L = 10.0 ft (lbf/ft) (in) (psi) 2.79 0.00369 125 3.00 0.00396 134 4.00 0.00528 179 5.00 0.00661 224 6.00 0.00793 268 7.00 0.00925 313 8.00 0.0106 358 9.00 0.0119 402 10.0 0.0132 447 20.0 0.0264 894 30.0 0.0396 1340 40.0 0.0528 1790 50.0 0.0661 2240 60.0 0.0793 2680 70.0 0.0925 3130 80.0 0.106 3580 90.0 0.119 4020 100 0.132 4470 200 0.264 8940 300 0.396 1.34 × 104 400 0.528 1.79 × 104 500 0.661 2.24 × 104 600 0.793 2.68 × 104 700 0.925 3.13 × 104 800 1.06 3.58 × 104 900 1.19 4.02 × 104 1000 1.32 4.47 × 104 1700 2.25 7.61 × 104
 Aluminum I Beam: 4.00 × 2.793 (4.00 inch tall × 2.793 lbf/ft) L = 15.0 ft (lbf/ft) (in) (psi) 2.79 0.0187 281 3.00 0.0201 302 4.00 0.0268 402 5.00 0.0334 503 6.00 0.0401 604 7.00 0.0468 704 8.00 0.0535 805 9.00 0.0602 905 10.0 0.0669 1010 20.0 0.134 2010 30.0 0.201 3020 40.0 0.268 4020 50.0 0.334 5030 60.0 0.401 6040 70.0 0.468 7040 80.0 0.535 8050 90.0 0.602 9050 100 0.669 1.01 × 104 200 1.34 2.01 × 104 300 2.01 3.02 × 104 400 2.68 4.02 × 104 500 3.34 5.03 × 104 598 4.00 6.02 × 104
 Aluminum I Beam: 4.00 × 2.793 (4.00 inch tall × 2.793 lbf/ft) L = 20.0 ft (lbf/ft) (in) (psi) 2.79 0.0590 499 3.00 0.0634 537 4.00 0.0846 715 5.00 0.106 894 6.00 0.127 1070 7.00 0.148 1250 8.00 0.169 1430 9.00 0.190 1610 10.0 0.211 1790 20.0 0.423 3580 30.0 0.634 5370 40.0 0.846 7150 50.0 1.06 8940 60.0 1.27 1.07 × 104 70.0 1.48 1.25 × 104 80.0 1.69 1.43 × 104 90.0 1.90 1.61 × 104 100 2.11 1.79 × 104 189 4.00 3.38 × 104
 Aluminum I Beam: 4.00 × 2.793 (4.00 inch tall × 2.793 lbf/ft) L = 25.0 ft (lbf/ft) (in) (psi) 2.79 0.144 780 3.00 0.155 838 4.00 0.206 1120 5.00 0.258 1400 6.00 0.310 1680 7.00 0.361 1960 8.00 0.413 2240 9.00 0.464 2510 10.0 0.516 2790 20.0 1.03 5590 30.0 1.55 8380 40.0 2.06 1.12 × 104 50.0 2.58 1.40 × 104 60.0 3.10 1.68 × 104 70.0 3.61 1.96 × 104 77.5 4.00 2.17 × 104
 Aluminum I Beam: 4.00 × 2.793 (4.00 inch tall × 2.793 lbf/ft) L = 30.0 ft (lbf/ft) (in) (psi) 2.79 0.299 1120 3.00 0.321 1210 4.00 0.428 1610 5.00 0.535 2010 6.00 0.642 2410 7.00 0.749 2820 8.00 0.856 3220 9.00 0.963 3620 10.0 1.07 4020 20.0 2.14 8050 30.0 3.21 1.21 × 104 37.4 4.00 1.50 × 104
 Aluminum I Beam: 4.00 × 2.793 (4.00 inch tall × 2.793 lbf/ft) L = 40.0 ft (lbf/ft) (in) (psi) 2.79 0.945 2000 3.00 1.01 2150 4.00 1.35 2860 5.00 1.69 3580 6.00 2.03 4290 7.00 2.37 5010 8.00 2.71 5720 9.00 3.04 6440 10.0 3.38 7150 11.8 4.00 8460
 Aluminum I Beam: 4.00 × 2.793 (4.00 inch tall × 2.793 lbf/ft) L = 50.0 ft (lbf/ft) (in) (psi) 2.79 2.31 3120 3.00 2.48 3350 4.00 3.30 4470 4.84 4.00 5410
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