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Glossary » Beams » Simply Supported » Uniformly Distributed Load » Single Span » Aluminum I Beam » 5.00 × 3.700
Aluminum I Beam | Single Span | Two Equal Spans | Three Equal Spans | Four Equal Spans

For a simply supported beam in a single span, the maximum displacement w_max and the maximum normal stress stress_max occur at the center of the beam.
The tabulated data listed in this page are calculated based on the area moment of inertia (Ixx = 13.94 in4) for the 5.00 × 3.700 Aluminum I Beam and the typical Young's modulus (E = 1.015 × 107 psi) of aluminum alloys. Note that the typical yielding stress Yield 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.
L = 3 ft
L = 5 ft
L = 10 ft
L = 15 ft
L = 20 ft
L = 25 ft
L = 30 ft
L = 40 ft
L = 50 ft
   
Aluminum I Beam: 5.00 × 3.700 (5.00 inch tall × 3.700 lbf/ft)
L = 3.00 ft
P (lbf/ft) w_max (in) stress_max (psi)
3.70 4.76 × 10-5 8.96
4.00 5.15 × 10-5 9.68
5.00 6.44 × 10-5 12.1
6.00 7.73 × 10-5 14.5
7.00 9.01 × 10-5 16.9
8.00 1.03 × 10-4 19.4
9.00 1.16 × 10-4 21.8
10.0 1.29 × 10-4 24.2
20.0 2.58 × 10-4 48.4
30.0 3.86 × 10-4 72.6
40.0 5.15 × 10-4 96.8
50.0 6.44 × 10-4 121
60.0 7.73 × 10-4 145
70.0 9.01 × 10-4 169
80.0 0.00103 194
90.0 0.00116 218
100 0.00129 242
200 0.00258 484
300 0.00386 726
400 0.00515 968
500 0.00644 1210
600 0.00773 1450
700 0.00901 1690
800 0.0103 1940
900 0.0116 2180
1000 0.0129 2420
2000 0.0258 4840
3000 0.0386 7260
4000 0.0515 9680
5000 0.0644 1.21 × 104
6000 0.0773 1.45 × 104
7000 0.0901 1.69 × 104
8000 0.103 1.94 × 104
9000 0.116 2.18 × 104
1.00 × 104 0.129 2.42 × 104
2.00 × 104 0.258 4.84 × 104
3.00 × 104 0.386 7.26 × 104
3.15 × 104 0.405 7.61 × 104
Aluminum I Beam: 5.00 × 3.700 (5.00 inch tall × 3.700 lbf/ft)
L = 5.00 ft
P (lbf/ft) w_max (in) stress_max (psi)
3.70 3.68 × 10-4 24.9
4.00 3.97 × 10-4 26.9
5.00 4.97 × 10-4 33.6
6.00 5.96 × 10-4 40.4
7.00 6.96 × 10-4 47.1
8.00 7.95 × 10-4 53.8
9.00 8.94 × 10-4 60.5
10.0 9.94 × 10-4 67.3
20.0 0.00199 135
30.0 0.00298 202
40.0 0.00397 269
50.0 0.00497 336
60.0 0.00596 404
70.0 0.00696 471
80.0 0.00795 538
90.0 0.00894 605
100 0.00994 673
200 0.0199 1350
300 0.0298 2020
400 0.0397 2690
500 0.0497 3360
600 0.0596 4040
700 0.0696 4710
800 0.0795 5380
900 0.0894 6050
1000 0.0994 6730
2000 0.199 1.35 × 104
3000 0.298 2.02 × 104
4000 0.397 2.69 × 104
5000 0.497 3.36 × 104
6000 0.596 4.04 × 104
7000 0.696 4.71 × 104
8000 0.795 5.38 × 104
9000 0.894 6.05 × 104
1.00 × 104 0.994 6.73 × 104
1.13 × 104 1.12 7.61 × 104
Aluminum I Beam: 5.00 × 3.700 (5.00 inch tall × 3.700 lbf/ft)
L = 10.0 ft
P (lbf/ft) w_max (in) stress_max (psi)
3.70 0.00588 99.5
4.00 0.00636 108
5.00 0.00795 135
6.00 0.00954 161
7.00 0.0111 188
8.00 0.0127 215
9.00 0.0143 242
10.0 0.0159 269
20.0 0.0318 538
30.0 0.0477 807
40.0 0.0636 1080
50.0 0.0795 1350
60.0 0.0954 1610
70.0 0.111 1880
80.0 0.127 2150
90.0 0.143 2420
100 0.159 2690
200 0.318 5380
300 0.477 8070
400 0.636 1.08 × 104
500 0.795 1.35 × 104
600 0.954 1.61 × 104
700 1.11 1.88 × 104
800 1.27 2.15 × 104
900 1.43 2.42 × 104
1000 1.59 2.69 × 104
2000 3.18 5.38 × 104
2830 4.50 7.61 × 104
Aluminum I Beam: 5.00 × 3.700 (5.00 inch tall × 3.700 lbf/ft)
L = 15.0 ft
P (lbf/ft) w_max (in) stress_max (psi)
3.70 0.0298 224
4.00 0.0322 242
5.00 0.0402 303
6.00 0.0483 363
7.00 0.0563 424
8.00 0.0644 484
9.00 0.0724 545
10.0 0.0805 605
20.0 0.161 1210
30.0 0.241 1820
40.0 0.322 2420
50.0 0.402 3030
60.0 0.483 3630
70.0 0.563 4240
80.0 0.644 4840
90.0 0.724 5450
100 0.805 6050
200 1.61 1.21 × 104
300 2.41 1.82 × 104
400 3.22 2.42 × 104
500 4.02 3.03 × 104
600 4.83 3.63 × 104
621 5.00 3.76 × 104
Aluminum I Beam: 5.00 × 3.700 (5.00 inch tall × 3.700 lbf/ft)
L = 20.0 ft
P (lbf/ft) w_max (in) stress_max (psi)
3.70 0.0941 398
4.00 0.102 430
5.00 0.127 538
6.00 0.153 646
7.00 0.178 753
8.00 0.203 861
9.00 0.229 968
10.0 0.254 1080
20.0 0.509 2150
30.0 0.763 3230
40.0 1.02 4300
50.0 1.27 5380
60.0 1.53 6460
70.0 1.78 7530
80.0 2.03 8610
90.0 2.29 9680
100 2.54 1.08 × 104
197 5.00 2.12 × 104
Aluminum I Beam: 5.00 × 3.700 (5.00 inch tall × 3.700 lbf/ft)
L = 25.0 ft
P (lbf/ft) w_max (in) stress_max (psi)
3.70 0.230 622
4.00 0.248 673
5.00 0.311 841
6.00 0.373 1010
7.00 0.435 1180
8.00 0.497 1350
9.00 0.559 1510
10.0 0.621 1680
20.0 1.24 3360
30.0 1.86 5040
40.0 2.48 6730
50.0 3.11 8410
60.0 3.73 1.01 × 104
70.0 4.35 1.18 × 104
80.0 4.97 1.35 × 104
80.5 5.00 1.35 × 104
Aluminum I Beam: 5.00 × 3.700 (5.00 inch tall × 3.700 lbf/ft)
L = 30.0 ft
P (lbf/ft) w_max (in) stress_max (psi)
3.70 0.476 896
4.00 0.515 968
5.00 0.644 1210
6.00 0.773 1450
7.00 0.901 1690
8.00 1.03 1940
9.00 1.16 2180
10.0 1.29 2420
20.0 2.58 4840
30.0 3.86 7260
38.8 5.00 9400
Aluminum I Beam: 5.00 × 3.700 (5.00 inch tall × 3.700 lbf/ft)
L = 40.0 ft
P (lbf/ft) w_max (in) stress_max (psi)
3.70 1.51 1590
4.00 1.63 1720
5.00 2.03 2150
6.00 2.44 2580
7.00 2.85 3010
8.00 3.26 3440
9.00 3.66 3870
10.0 4.07 4300
12.3 5.00 5290
Aluminum I Beam: 5.00 × 3.700 (5.00 inch tall × 3.700 lbf/ft)
L = 50.0 ft
P (lbf/ft) w_max (in) stress_max (psi)
3.70 3.68 2490
4.00 3.97 2690
5.00 4.97 3360
5.03 5.00 3380
Additional Information
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