Materials Design Center Processes Unit Conversion Formulas Mathematics
 Calculators Discussion Forum Trade Publications Directory Service
STEM Career Outlook

Wages, employment opportunities, and growth projections for STEM jobs.

3D Scanners

A white paper to assist in the evaluation of 3D scanning hardware solutions.

Selecting the Right 3D Printer

Discover how to choose the right 3D printer for your needs and the key performance attributes to consider.

Learn the best principles to negotiate the salary you deserve!

more free publications
Glossary » Beams » Simply Supported » Uniformly Distributed Load » Three 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 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 = 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 3.90 × 10-5 8.99 3.00 4.19 × 10-5 9.66 4.00 5.59 × 10-5 12.9 5.00 6.99 × 10-5 16.1 6.00 8.38 × 10-5 19.3 7.00 9.78 × 10-5 22.5 8.00 1.12 × 10-4 25.8 9.00 1.26 × 10-4 29.0 10.0 1.40 × 10-4 32.2 20.0 2.79 × 10-4 64.4 30.0 4.19 × 10-4 96.6 40.0 5.59 × 10-4 129 50.0 6.99 × 10-4 161 60.0 8.38 × 10-4 193 70.0 9.78 × 10-4 225 80.0 0.00112 258 90.0 0.00126 290 100 0.00140 322 200 0.00279 644 300 0.00419 966 400 0.00559 1290 500 0.00699 1610 600 0.00838 1930 700 0.00978 2250 800 0.0112 2580 900 0.0126 2900 1000 0.0140 3220 2000 0.0279 6440 3000 0.0419 9660 4000 0.0559 1.29 × 104 5000 0.0699 1.61 × 104 6000 0.0838 1.93 × 104 7000 0.0978 2.25 × 104 8000 0.112 2.58 × 104 9000 0.126 2.90 × 104 1.00 × 104 0.140 3.22 × 104 2.00 × 104 0.279 6.44 × 104 2.37 × 104 0.330 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 3.01 × 10-4 25.0 3.00 3.23 × 10-4 26.8 4.00 4.31 × 10-4 35.8 5.00 5.39 × 10-4 44.7 6.00 6.47 × 10-4 53.7 7.00 7.55 × 10-4 62.6 8.00 8.62 × 10-4 71.5 9.00 9.70 × 10-4 80.5 10.0 0.00108 89.4 20.0 0.00216 179 30.0 0.00323 268 40.0 0.00431 358 50.0 0.00539 447 60.0 0.00647 537 70.0 0.00755 626 80.0 0.00862 715 90.0 0.00970 805 100 0.0108 894 200 0.0216 1790 300 0.0323 2680 400 0.0431 3580 500 0.0539 4470 600 0.0647 5370 700 0.0755 6260 800 0.0862 7150 900 0.0970 8050 1000 0.108 8940 2000 0.216 1.79 × 104 3000 0.323 2.68 × 104 4000 0.431 3.58 × 104 5000 0.539 4.47 × 104 6000 0.647 5.37 × 104 7000 0.755 6.26 × 104 8000 0.862 7.15 × 104 8520 0.918 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 0.00482 99.9 3.00 0.00517 107 4.00 0.00690 143 5.00 0.00862 179 6.00 0.0103 215 7.00 0.0121 250 8.00 0.0138 286 9.00 0.0155 322 10.0 0.0172 358 20.0 0.0345 715 30.0 0.0517 1070 40.0 0.0690 1430 50.0 0.0862 1790 60.0 0.103 2150 70.0 0.121 2500 80.0 0.138 2860 90.0 0.155 3220 100 0.172 3580 200 0.345 7150 300 0.517 1.07 × 104 400 0.690 1.43 × 104 500 0.862 1.79 × 104 600 1.03 2.15 × 104 700 1.21 2.50 × 104 800 1.38 2.86 × 104 900 1.55 3.22 × 104 1000 1.72 3.58 × 104 2000 3.45 7.15 × 104 2130 3.67 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 0.0244 225 3.00 0.0262 241 4.00 0.0349 322 5.00 0.0437 402 6.00 0.0524 483 7.00 0.0611 563 8.00 0.0699 644 9.00 0.0786 724 10.0 0.0873 805 20.0 0.175 1610 30.0 0.262 2410 40.0 0.349 3220 50.0 0.437 4020 60.0 0.524 4830 70.0 0.611 5630 80.0 0.699 6440 90.0 0.786 7240 100 0.873 8050 200 1.75 1.61 × 104 300 2.62 2.41 × 104 400 3.49 3.22 × 104 458 4.00 3.69 × 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 0.0771 400 3.00 0.0828 429 4.00 0.110 572 5.00 0.138 715 6.00 0.166 858 7.00 0.193 1000 8.00 0.221 1140 9.00 0.248 1290 10.0 0.276 1430 20.0 0.552 2860 30.0 0.828 4290 40.0 1.10 5720 50.0 1.38 7150 60.0 1.66 8580 70.0 1.93 1.00 × 104 80.0 2.21 1.14 × 104 90.0 2.48 1.29 × 104 100 2.76 1.43 × 104 145 4.00 2.07 × 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 0.188 624 3.00 0.202 671 4.00 0.270 894 5.00 0.337 1120 6.00 0.404 1340 7.00 0.472 1560 8.00 0.539 1790 9.00 0.606 2010 10.0 0.674 2240 20.0 1.35 4470 30.0 2.02 6710 40.0 2.70 8940 50.0 3.37 1.12 × 104 59.4 4.00 1.33 × 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 0.390 899 3.00 0.419 966 4.00 0.559 1290 5.00 0.699 1610 6.00 0.838 1930 7.00 0.978 2250 8.00 1.12 2580 9.00 1.26 2900 10.0 1.40 3220 20.0 2.79 6440 28.6 4.00 9220
 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 1.23 1600 3.00 1.32 1720 4.00 1.77 2290 5.00 2.21 2860 6.00 2.65 3430 7.00 3.09 4010 8.00 3.53 4580 9.00 3.97 5150 9.06 4.00 5180
 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 3.01 2500 3.00 3.23 2680 3.71 4.00 3320
Related Pages
STEM Career Outlook

Wages, employment opportunities, and growth projections for STEM jobs.

3D Scanners

A white paper to assist in the evaluation of 3D scanning hardware solutions.

Selecting the Right 3D Printer

Discover how to choose the right 3D printer for your needs and the key performance attributes to consider.