eFunda: Glossary: Beams: Simply Supported: Uniformly Distributed Load: Three Equal Spans: S Section Steel I Beam: S6 × 17.25

Glossary » Beams » Simply Supported » Uniformly Distributed Load » Three Equal Spans » S Section Steel I Beam » S6 × 17.25

S Section Steel 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 stress_max

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 (I_xx = 26.3 in⁴) for the S6 × 17.25 S Section Steel I Beam and the typical Young's modulus (E = 3.046 × 10⁷ psi) of steels. Note that the typical yielding stress Yield

of steels can range from 1.015 × 10⁴ to 2.970 × 10⁵ 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.

Steel I Beam: S6 × 17.25 (S6 inch tall × 17.25 lbf/ft)
L = 3.00 ft
(lbf/ft)	(in)	(psi)
17.3	2.05 × 10^-5	21.3
20.0	2.38 × 10^-5	24.6
30.0	3.56 × 10^-5	37.0
40.0	4.75 × 10^-5	49.3
50.0	5.94 × 10^-5	61.6
60.0	7.13 × 10^-5	73.9
70.0	8.32 × 10^-5	86.2
80.0	9.51 × 10^-5	98.6
90.0	1.07 × 10^-4	111
100	1.19 × 10^-4	123
200	2.38 × 10^-4	246
300	3.56 × 10^-4	370
400	4.75 × 10^-4	493
500	5.94 × 10^-4	616
600	7.13 × 10^-4	739
700	8.32 × 10^-4	862
800	9.51 × 10^-4	986
900	0.00107	1110
1000	0.00119	1230
2000	0.00238	2460
3000	0.00356	3700
4000	0.00475	4930
5000	0.00594	6160
6000	0.00713	7390
7000	0.00832	8620
8000	0.00951	9860
9000	0.0107	1.11 × 10⁴
1.00 × 10⁴	0.0119	1.23 × 10⁴
2.00 × 10⁴	0.0238	2.46 × 10⁴
3.00 × 10⁴	0.0356	3.70 × 10⁴
4.00 × 10⁴	0.0475	4.93 × 10⁴
5.00 × 10⁴	0.0594	6.16 × 10⁴
6.00 × 10⁴	0.0713	7.39 × 10⁴
7.00 × 10⁴	0.0832	8.62 × 10⁴
8.00 × 10⁴	0.0951	9.86 × 10⁴
9.00 × 10⁴	0.107	1.11 × 10⁵
1.00 × 10⁵	0.119	1.23 × 10⁵
2.00 × 10⁵	0.238	2.46 × 10⁵
2.41 × 10⁵	0.286	2.97 × 10⁵

Steel I Beam: S6 × 17.25 (S6 inch tall × 17.25 lbf/ft)
L = 5.00 ft
(lbf/ft)	(in)	(psi)
17.3	1.58 × 10^-4	59.0
20.0	1.83 × 10^-4	68.4
30.0	2.75 × 10^-4	103
40.0	3.67 × 10^-4	137
50.0	4.58 × 10^-4	171
60.0	5.50 × 10^-4	205
70.0	6.42 × 10^-4	240
80.0	7.33 × 10^-4	274
90.0	8.25 × 10^-4	308
100	9.17 × 10^-4	342
200	0.00183	684
300	0.00275	1030
400	0.00367	1370
500	0.00458	1710
600	0.00550	2050
700	0.00642	2400
800	0.00733	2740
900	0.00825	3080
1000	0.00917	3420
2000	0.0183	6840
3000	0.0275	1.03 × 10⁴
4000	0.0367	1.37 × 10⁴
5000	0.0458	1.71 × 10⁴
6000	0.0550	2.05 × 10⁴
7000	0.0642	2.40 × 10⁴
8000	0.0733	2.74 × 10⁴
9000	0.0825	3.08 × 10⁴
1.00 × 10⁴	0.0917	3.42 × 10⁴
2.00 × 10⁴	0.183	6.84 × 10⁴
3.00 × 10⁴	0.275	1.03 × 10⁵
4.00 × 10⁴	0.367	1.37 × 10⁵
5.00 × 10⁴	0.458	1.71 × 10⁵
6.00 × 10⁴	0.550	2.05 × 10⁵
7.00 × 10⁴	0.642	2.40 × 10⁵
8.00 × 10⁴	0.733	2.74 × 10⁵
8.68 × 10⁴	0.796	2.97 × 10⁵

Steel I Beam: S6 × 17.25 (S6 inch tall × 17.25 lbf/ft)
L = 10.0 ft
(lbf/ft)	(in)	(psi)
17.3	0.00253	236
20.0	0.00293	274
30.0	0.00440	411
40.0	0.00587	548
50.0	0.00733	684
60.0	0.00880	821
70.0	0.0103	958
80.0	0.0117	1100
90.0	0.0132	1230
100	0.0147	1370
200	0.0293	2740
300	0.0440	4110
400	0.0587	5480
500	0.0733	6840
600	0.0880	8210
700	0.103	9580
800	0.117	1.10 × 10⁴
900	0.132	1.23 × 10⁴
1000	0.147	1.37 × 10⁴
2000	0.293	2.74 × 10⁴
3000	0.440	4.11 × 10⁴
4000	0.587	5.48 × 10⁴
5000	0.733	6.84 × 10⁴
6000	0.880	8.21 × 10⁴
7000	1.03	9.58 × 10⁴
8000	1.17	1.10 × 10⁵
9000	1.32	1.23 × 10⁵
1.00 × 10⁴	1.47	1.37 × 10⁵
2.00 × 10⁴	2.93	2.74 × 10⁵
2.17 × 10⁴	3.18	2.97 × 10⁵

Steel I Beam: S6 × 17.25 (S6 inch tall × 17.25 lbf/ft)
L = 15.0 ft
(lbf/ft)	(in)	(psi)
17.3	0.0128	531
20.0	0.0149	616
30.0	0.0223	924
40.0	0.0297	1230
50.0	0.0371	1540
60.0	0.0446	1850
70.0	0.0520	2160
80.0	0.0594	2460
90.0	0.0668	2770
100	0.0743	3080
200	0.149	6160
300	0.223	9240
400	0.297	1.23 × 10⁴
500	0.371	1.54 × 10⁴
600	0.446	1.85 × 10⁴
700	0.520	2.16 × 10⁴
800	0.594	2.46 × 10⁴
900	0.668	2.77 × 10⁴
1000	0.743	3.08 × 10⁴
2000	1.49	6.16 × 10⁴
3000	2.23	9.24 × 10⁴
4000	2.97	1.23 × 10⁵
5000	3.71	1.54 × 10⁵
6000	4.46	1.85 × 10⁵
7000	5.20	2.16 × 10⁵
8000	5.94	2.46 × 10⁵
8080	6.00	2.49 × 10⁵

Steel I Beam: S6 × 17.25 (S6 inch tall × 17.25 lbf/ft)
L = 20.0 ft
(lbf/ft)	(in)	(psi)
17.3	0.0405	944
20.0	0.0469	1100
30.0	0.0704	1640
40.0	0.0939	2190
50.0	0.117	2740
60.0	0.141	3290
70.0	0.164	3830
80.0	0.188	4380
90.0	0.211	4930
100	0.235	5480
200	0.469	1.10 × 10⁴
300	0.704	1.64 × 10⁴
400	0.939	2.19 × 10⁴
500	1.17	2.74 × 10⁴
600	1.41	3.29 × 10⁴
700	1.64	3.83 × 10⁴
800	1.88	4.38 × 10⁴
900	2.11	4.93 × 10⁴
1000	2.35	5.48 × 10⁴
2000	4.69	1.10 × 10⁵
2560	6.00	1.40 × 10⁵

Steel I Beam: S6 × 17.25 (S6 inch tall × 17.25 lbf/ft)
L = 25.0 ft
(lbf/ft)	(in)	(psi)
17.3	0.0988	1480
20.0	0.115	1710
30.0	0.172	2570
40.0	0.229	3420
50.0	0.287	4280
60.0	0.344	5130
70.0	0.401	5990
80.0	0.458	6840
90.0	0.516	7700
100	0.573	8560
200	1.15	1.71 × 10⁴
300	1.72	2.57 × 10⁴
400	2.29	3.42 × 10⁴
500	2.87	4.28 × 10⁴
600	3.44	5.13 × 10⁴
700	4.01	5.99 × 10⁴
800	4.58	6.84 × 10⁴
900	5.16	7.70 × 10⁴
1000	5.73	8.56 × 10⁴
1050	6.00	8.96 × 10⁴

Steel I Beam: S6 × 17.25 (S6 inch tall × 17.25 lbf/ft)
L = 30.0 ft
(lbf/ft)	(in)	(psi)
17.3	0.205	2130
20.0	0.238	2460
30.0	0.356	3700
40.0	0.475	4930
50.0	0.594	6160
60.0	0.713	7390
70.0	0.832	8620
80.0	0.951	9860
90.0	1.07	1.11 × 10⁴
100	1.19	1.23 × 10⁴
200	2.38	2.46 × 10⁴
300	3.56	3.70 × 10⁴
400	4.75	4.93 × 10⁴
500	5.94	6.16 × 10⁴
505	6.00	6.22 × 10⁴

Steel I Beam: S6 × 17.25 (S6 inch tall × 17.25 lbf/ft)
L = 40.0 ft
(lbf/ft)	(in)	(psi)
17.3	0.648	3780
20.0	0.751	4380
30.0	1.13	6570
40.0	1.50	8760
50.0	1.88	1.10 × 10⁴
60.0	2.25	1.31 × 10⁴
70.0	2.63	1.53 × 10⁴
80.0	3.00	1.75 × 10⁴
90.0	3.38	1.97 × 10⁴
100	3.76	2.19 × 10⁴
160	6.00	3.50 × 10⁴

Steel I Beam: S6 × 17.25 (S6 inch tall × 17.25 lbf/ft)
L = 50.0 ft
(lbf/ft)	(in)	(psi)
17.3	1.58	5900
20.0	1.83	6840
30.0	2.75	1.03 × 10⁴
40.0	3.67	1.37 × 10⁴
50.0	4.58	1.71 × 10⁴
60.0	5.50	2.05 × 10⁴
65.4	6.00	2.24 × 10⁴

Steel I Beam: S6 × 17.25 (S6 inch tall × 17.25 lbf/ft)
L = 60.0 ft
(lbf/ft)	(in)	(psi)
17.3	3.28	8500
20.0	3.80	9860
30.0	5.70	1.48 × 10⁴
31.6	6.00	1.56 × 10⁴

Additional Information

Area properties of S Section Steel I-Beams

Properties of Common Steels

Beam Equations and Euler-Bernoulli Beam Theory

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