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Glossary » Beams » Simply Supported » Uniformly Distributed Load » Single Span » 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 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 = 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 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
   
Aluminum I Beam: 3.00 × 1.637 (3.00 inch tall × 1.637 lbf/ft)
L = 3.00 ft
P (lbf/ft) w_max (in) stress_max (psi)
1.64 1.31 × 10-4 14.8
2.00 1.60 × 10-4 18.1
3.00 2.40 × 10-4 27.1
4.00 3.21 × 10-4 36.2
5.00 4.01 × 10-4 45.2
6.00 4.81 × 10-4 54.2
7.00 5.61 × 10-4 63.3
8.00 6.41 × 10-4 72.3
9.00 7.21 × 10-4 81.4
10.0 8.01 × 10-4 90.4
20.0 0.00160 181
30.0 0.00240 271
40.0 0.00321 362
50.0 0.00401 452
60.0 0.00481 542
70.0 0.00561 633
80.0 0.00641 723
90.0 0.00721 814
100 0.00801 904
200 0.0160 1810
300 0.0240 2710
400 0.0321 3620
500 0.0401 4520
600 0.0481 5420
700 0.0561 6330
800 0.0641 7230
900 0.0721 8140
1000 0.0801 9040
2000 0.160 1.81 × 104
3000 0.240 2.71 × 104
4000 0.321 3.62 × 104
5000 0.401 4.52 × 104
6000 0.481 5.42 × 104
7000 0.561 6.33 × 104
8000 0.641 7.23 × 104
8420 0.675 7.61 × 104
Aluminum I Beam: 3.00 × 1.637 (3.00 inch tall × 1.637 lbf/ft)
L = 5.00 ft
P (lbf/ft) w_max (in) stress_max (psi)
1.64 0.00101 41.1
2.00 0.00124 50.2
3.00 0.00186 75.3
4.00 0.00247 100
5.00 0.00309 126
6.00 0.00371 151
7.00 0.00433 176
8.00 0.00495 201
9.00 0.00557 226
10.0 0.00618 251
20.0 0.0124 502
30.0 0.0186 753
40.0 0.0247 1000
50.0 0.0309 1260
60.0 0.0371 1510
70.0 0.0433 1760
80.0 0.0495 2010
90.0 0.0557 2260
100 0.0618 2510
200 0.124 5020
300 0.186 7530
400 0.247 1.00 × 104
500 0.309 1.26 × 104
600 0.371 1.51 × 104
700 0.433 1.76 × 104
800 0.495 2.01 × 104
900 0.557 2.26 × 104
1000 0.618 2.51 × 104
2000 1.24 5.02 × 104
3000 1.86 7.53 × 104
3030 1.88 7.61 × 104
Aluminum I Beam: 3.00 × 1.637 (3.00 inch tall × 1.637 lbf/ft)
L = 10.0 ft
P (lbf/ft) w_max (in) stress_max (psi)
1.64 0.0162 164
2.00 0.0198 201
3.00 0.0297 301
4.00 0.0396 402
5.00 0.0495 502
6.00 0.0594 603
7.00 0.0693 703
8.00 0.0791 804
9.00 0.0890 904
10.0 0.0989 1000
20.0 0.198 2010
30.0 0.297 3010
40.0 0.396 4020
50.0 0.495 5020
60.0 0.594 6030
70.0 0.693 7030
80.0 0.791 8040
90.0 0.890 9040
100 0.989 1.00 × 104
200 1.98 2.01 × 104
300 2.97 3.01 × 104
303 3.00 3.05 × 104
Aluminum I Beam: 3.00 × 1.637 (3.00 inch tall × 1.637 lbf/ft)
L = 15.0 ft
P (lbf/ft) w_max (in) stress_max (psi)
1.64 0.0820 370
2.00 0.100 452
3.00 0.150 678
4.00 0.200 904
5.00 0.250 1130
6.00 0.301 1360
7.00 0.351 1580
8.00 0.401 1810
9.00 0.451 2030
10.0 0.501 2260
20.0 1.00 4520
30.0 1.50 6780
40.0 2.00 9040
50.0 2.50 1.13 × 104
59.9 3.00 1.35 × 104
Aluminum I Beam: 3.00 × 1.637 (3.00 inch tall × 1.637 lbf/ft)
L = 20.0 ft
P (lbf/ft) w_max (in) stress_max (psi)
1.64 0.259 658
2.00 0.317 804
3.00 0.475 1210
4.00 0.633 1610
5.00 0.791 2010
6.00 0.950 2410
7.00 1.11 2810
8.00 1.27 3210
9.00 1.42 3620
10.0 1.58 4020
19.0 3.00 7610
Aluminum I Beam: 3.00 × 1.637 (3.00 inch tall × 1.637 lbf/ft)
L = 25.0 ft
P (lbf/ft) w_max (in) stress_max (psi)
1.64 0.633 1030
2.00 0.773 1260
3.00 1.16 1880
4.00 1.55 2510
5.00 1.93 3140
6.00 2.32 3770
7.00 2.71 4390
7.76 3.00 4870
Aluminum I Beam: 3.00 × 1.637 (3.00 inch tall × 1.637 lbf/ft)
L = 30.0 ft
P (lbf/ft) w_max (in) stress_max (psi)
1.64 1.31 1480
2.00 1.60 1810
3.00 2.40 2710
3.74 3.00 3380
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CNC Machining Design Guide

Optimize your designs, reduce machining time, and lower your costs.

Essentials of Manufacturing

Information, coverage of important developments and expert commentary in manufacturing.

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

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