eFunda: Glossary: Beams: Simply Supported: Uniformly Distributed Load: Single Span: Aluminum I Beam: 8.00 × 6.181

Glossary » Beams » Simply Supported » Uniformly Distributed Load » Single Span » Aluminum I Beam » 8.00 × 6.181

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 = 59.69 in⁴) for the 8.00 × 6.181 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: 8.00 × 6.181 (8.00 inch tall × 6.181 lbf/ft)
L = 3.00 ft
(lbf/ft)	(in)	(psi)
6.18	1.86 × 10^-5	5.59
7.00	2.11 × 10^-5	6.33
8.00	2.41 × 10^-5	7.24
9.00	2.71 × 10^-5	8.14
10.0	3.01 × 10^-5	9.05
20.0	6.01 × 10^-5	18.1
30.0	9.02 × 10^-5	27.1
40.0	1.20 × 10^-4	36.2
50.0	1.50 × 10^-4	45.2
60.0	1.80 × 10^-4	54.3
70.0	2.11 × 10^-4	63.3
80.0	2.41 × 10^-4	72.4
90.0	2.71 × 10^-4	81.4
100	3.01 × 10^-4	90.5
200	6.01 × 10^-4	181
300	9.02 × 10^-4	271
400	0.00120	362
500	0.00150	452
600	0.00180	543
700	0.00211	633
800	0.00241	724
900	0.00271	814
1000	0.00301	905
2000	0.00601	1810
3000	0.00902	2710
4000	0.0120	3620
5000	0.0150	4520
6000	0.0180	5430
7000	0.0211	6330
8000	0.0241	7240
9000	0.0271	8140
1.00 × 10⁴	0.0301	9050
2.00 × 10⁴	0.0601	1.81 × 10⁴
3.00 × 10⁴	0.0902	2.71 × 10⁴
4.00 × 10⁴	0.120	3.62 × 10⁴
5.00 × 10⁴	0.150	4.52 × 10⁴
6.00 × 10⁴	0.180	5.43 × 10⁴
7.00 × 10⁴	0.211	6.33 × 10⁴
8.00 × 10⁴	0.241	7.24 × 10⁴
8.42 × 10⁴	0.253	7.61 × 10⁴

Aluminum I Beam: 8.00 × 6.181 (8.00 inch tall × 6.181 lbf/ft)
L = 5.00 ft
(lbf/ft)	(in)	(psi)
6.18	1.43 × 10^-4	15.5
7.00	1.62 × 10^-4	17.6
8.00	1.86 × 10^-4	20.1
9.00	2.09 × 10^-4	22.6
10.0	2.32 × 10^-4	25.1
20.0	4.64 × 10^-4	50.3
30.0	6.96 × 10^-4	75.4
40.0	9.28 × 10^-4	101
50.0	0.00116	126
60.0	0.00139	151
70.0	0.00162	176
80.0	0.00186	201
90.0	0.00209	226
100	0.00232	251
200	0.00464	503
300	0.00696	754
400	0.00928	1010
500	0.0116	1260
600	0.0139	1510
700	0.0162	1760
800	0.0186	2010
900	0.0209	2260
1000	0.0232	2510
2000	0.0464	5030
3000	0.0696	7540
4000	0.0928	1.01 × 10⁴
5000	0.116	1.26 × 10⁴
6000	0.139	1.51 × 10⁴
7000	0.162	1.76 × 10⁴
8000	0.186	2.01 × 10⁴
9000	0.209	2.26 × 10⁴
1.00 × 10⁴	0.232	2.51 × 10⁴
2.00 × 10⁴	0.464	5.03 × 10⁴
3.00 × 10⁴	0.696	7.54 × 10⁴
3.03 × 10⁴	0.703	7.61 × 10⁴

Aluminum I Beam: 8.00 × 6.181 (8.00 inch tall × 6.181 lbf/ft)
L = 10.0 ft
(lbf/ft)	(in)	(psi)
6.18	0.00229	62.1
7.00	0.00260	70.4
8.00	0.00297	80.4
9.00	0.00334	90.5
10.0	0.00371	101
20.0	0.00743	201
30.0	0.0111	302
40.0	0.0149	402
50.0	0.0186	503
60.0	0.0223	603
70.0	0.0260	704
80.0	0.0297	804
90.0	0.0334	905
100	0.0371	1010
200	0.0743	2010
300	0.111	3020
400	0.149	4020
500	0.186	5030
600	0.223	6030
700	0.260	7040
800	0.297	8040
900	0.334	9050
1000	0.371	1.01 × 10⁴
2000	0.743	2.01 × 10⁴
3000	1.11	3.02 × 10⁴
4000	1.49	4.02 × 10⁴
5000	1.86	5.03 × 10⁴
6000	2.23	6.03 × 10⁴
7000	2.60	7.04 × 10⁴
7580	2.81	7.61 × 10⁴

Aluminum I Beam: 8.00 × 6.181 (8.00 inch tall × 6.181 lbf/ft)
L = 15.0 ft
(lbf/ft)	(in)	(psi)
6.18	0.0116	140
7.00	0.0132	158
8.00	0.0150	181
9.00	0.0169	204
10.0	0.0188	226
20.0	0.0376	452
30.0	0.0564	679
40.0	0.0752	905
50.0	0.0940	1130
60.0	0.113	1360
70.0	0.132	1580
80.0	0.150	1810
90.0	0.169	2040
100	0.188	2260
200	0.376	4520
300	0.564	6790
400	0.752	9050
500	0.940	1.13 × 10⁴
600	1.13	1.36 × 10⁴
700	1.32	1.58 × 10⁴
800	1.50	1.81 × 10⁴
900	1.69	2.04 × 10⁴
1000	1.88	2.26 × 10⁴
2000	3.76	4.52 × 10⁴
3000	5.64	6.79 × 10⁴
3370	6.33	7.61 × 10⁴

Aluminum I Beam: 8.00 × 6.181 (8.00 inch tall × 6.181 lbf/ft)
L = 20.0 ft
(lbf/ft)	(in)	(psi)
6.18	0.0367	249
7.00	0.0416	281
8.00	0.0475	322
9.00	0.0535	362
10.0	0.0594	402
20.0	0.119	804
30.0	0.178	1210
40.0	0.238	1610
50.0	0.297	2010
60.0	0.356	2410
70.0	0.416	2810
80.0	0.475	3220
90.0	0.535	3620
100	0.594	4020
200	1.19	8040
300	1.78	1.21 × 10⁴
400	2.38	1.61 × 10⁴
500	2.97	2.01 × 10⁴
600	3.56	2.41 × 10⁴
700	4.16	2.81 × 10⁴
800	4.75	3.22 × 10⁴
900	5.35	3.62 × 10⁴
1000	5.94	4.02 × 10⁴
1890	11.3	7.61 × 10⁴

Aluminum I Beam: 8.00 × 6.181 (8.00 inch tall × 6.181 lbf/ft)
L = 25.0 ft
(lbf/ft)	(in)	(psi)
6.18	0.0896	388
7.00	0.102	440
8.00	0.116	503
9.00	0.131	565
10.0	0.145	628
20.0	0.290	1260
30.0	0.435	1880
40.0	0.580	2510
50.0	0.725	3140
60.0	0.870	3770
70.0	1.02	4400
80.0	1.16	5030
90.0	1.31	5650
100	1.45	6280
200	2.90	1.26 × 10⁴
300	4.35	1.88 × 10⁴
400	5.80	2.51 × 10⁴
500	7.25	3.14 × 10⁴
552	8.00	3.47 × 10⁴

Aluminum I Beam: 8.00 × 6.181 (8.00 inch tall × 6.181 lbf/ft)
L = 30.0 ft
(lbf/ft)	(in)	(psi)
6.18	0.186	559
7.00	0.211	633
8.00	0.241	724
9.00	0.271	814
10.0	0.301	905
20.0	0.601	1810
30.0	0.902	2710
40.0	1.20	3620
50.0	1.50	4520
60.0	1.80	5430
70.0	2.11	6330
80.0	2.41	7240
90.0	2.71	8140
100	3.01	9050
200	6.01	1.81 × 10⁴
266	8.00	2.41 × 10⁴

Aluminum I Beam: 8.00 × 6.181 (8.00 inch tall × 6.181 lbf/ft)
L = 40.0 ft
(lbf/ft)	(in)	(psi)
6.18	0.587	994
7.00	0.665	1130
8.00	0.760	1290
9.00	0.855	1450
10.0	0.950	1610
20.0	1.90	3220
30.0	2.85	4820
40.0	3.80	6430
50.0	4.75	8040
60.0	5.70	9650
70.0	6.65	1.13 × 10⁴
80.0	7.60	1.29 × 10⁴
84.2	8.00	1.35 × 10⁴

Aluminum I Beam: 8.00 × 6.181 (8.00 inch tall × 6.181 lbf/ft)
L = 50.0 ft
(lbf/ft)	(in)	(psi)
6.18	1.43	1550
7.00	1.62	1760
8.00	1.86	2010
9.00	2.09	2260
10.0	2.32	2510
20.0	4.64	5030
30.0	6.96	7540
34.5	8.00	8660

Aluminum I Beam: 8.00 × 6.181 (8.00 inch tall × 6.181 lbf/ft)
L = 60.0 ft
(lbf/ft)	(in)	(psi)
6.18	2.97	2240
7.00	3.37	2530
8.00	3.85	2890
9.00	4.33	3260
10.0	4.81	3620
16.6	8.00	6020

Aluminum I Beam: 8.00 × 6.181 (8.00 inch tall × 6.181 lbf/ft)
L = 70.0 ft
(lbf/ft)	(in)	(psi)
6.18	5.51	3040
7.00	6.24	3450
8.00	7.13	3940
8.97	8.00	4420

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Area properties of Aluminum I-Beams

Properties of Common Aluminum Alloys

Beam Equations and Euler-Bernoulli Beam Theory

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