eFunda: Glossary: Beams: Simply Supported: Uniformly Distributed Load: Single Span: Aluminum I Beam: 3.00 × 1.637

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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 (I_xx = 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.

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	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
(lbf/ft)	(in)	(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
(lbf/ft)	(in)	(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
(lbf/ft)	(in)	(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
(lbf/ft)	(in)	(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
(lbf/ft)	(in)	(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
(lbf/ft)	(in)	(psi)
1.64	1.31	1480
2.00	1.60	1810
3.00	2.40	2710
3.74	3.00	3380

Additional Information

Area properties of Aluminum I-Beams

Properties of Common Aluminum Alloys

Beam Equations and Euler-Bernoulli Beam Theory

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