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Glossary » Beams » Simply Supported » Uniformly Distributed Load » Three Equal Spans » S Section Steel I Beam » S10 × 25.4
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 (Ixx = 124 in4) for the S10 × 25.4 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.
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
L = 60 ft
L = 70 ft
L = 80 ft
L = 90 ft
L = 100 ft
   
Steel I Beam: S10 × 25.4 (S10 inch tall × 25.4 lbf/ft)
L = 3.00 ft
P (lbf/ft) w_max (in) stress_max (psi)
25.4 6.40 × 10-6 11.1
30.0 7.56 × 10-6 13.1
40.0 1.01 × 10-5 17.4
50.0 1.26 × 10-5 21.8
60.0 1.51 × 10-5 26.1
70.0 1.76 × 10-5 30.5
80.0 2.02 × 10-5 34.8
90.0 2.27 × 10-5 39.2
100 2.52 × 10-5 43.5
200 5.04 × 10-5 87.1
300 7.56 × 10-5 131
400 1.01 × 10-4 174
500 1.26 × 10-4 218
600 1.51 × 10-4 261
700 1.76 × 10-4 305
800 2.02 × 10-4 348
900 2.27 × 10-4 392
1000 2.52 × 10-4 435
2000 5.04 × 10-4 871
3000 7.56 × 10-4 1310
4000 0.00101 1740
5000 0.00126 2180
6000 0.00151 2610
7000 0.00176 3050
8000 0.00202 3480
9000 0.00227 3920
1.00 × 104 0.00252 4350
2.00 × 104 0.00504 8710
3.00 × 104 0.00756 1.31 × 104
4.00 × 104 0.0101 1.74 × 104
5.00 × 104 0.0126 2.18 × 104
6.00 × 104 0.0151 2.61 × 104
7.00 × 104 0.0176 3.05 × 104
8.00 × 104 0.0202 3.48 × 104
9.00 × 104 0.0227 3.92 × 104
1.00 × 105 0.0252 4.35 × 104
2.00 × 105 0.0504 8.71 × 104
3.00 × 105 0.0756 1.31 × 105
4.00 × 105 0.101 1.74 × 105
5.00 × 105 0.126 2.18 × 105
6.00 × 105 0.151 2.61 × 105
6.82 × 105 0.172 2.97 × 105
Steel I Beam: S10 × 25.4 (S10 inch tall × 25.4 lbf/ft)
L = 5.00 ft
P (lbf/ft) w_max (in) stress_max (psi)
25.4 4.94 × 10-5 30.7
30.0 5.83 × 10-5 36.3
40.0 7.78 × 10-5 48.4
50.0 9.72 × 10-5 60.5
60.0 1.17 × 10-4 72.6
70.0 1.36 × 10-4 84.7
80.0 1.56 × 10-4 96.8
90.0 1.75 × 10-4 109
100 1.94 × 10-4 121
200 3.89 × 10-4 242
300 5.83 × 10-4 363
400 7.78 × 10-4 484
500 9.72 × 10-4 605
600 0.00117 726
700 0.00136 847
800 0.00156 968
900 0.00175 1090
1000 0.00194 1210
2000 0.00389 2420
3000 0.00583 3630
4000 0.00778 4840
5000 0.00972 6050
6000 0.0117 7260
7000 0.0136 8470
8000 0.0156 9680
9000 0.0175 1.09 × 104
1.00 × 104 0.0194 1.21 × 104
2.00 × 104 0.0389 2.42 × 104
3.00 × 104 0.0583 3.63 × 104
4.00 × 104 0.0778 4.84 × 104
5.00 × 104 0.0972 6.05 × 104
6.00 × 104 0.117 7.26 × 104
7.00 × 104 0.136 8.47 × 104
8.00 × 104 0.156 9.68 × 104
9.00 × 104 0.175 1.09 × 105
1.00 × 105 0.194 1.21 × 105
2.00 × 105 0.389 2.42 × 105
2.46 × 105 0.477 2.97 × 105
Steel I Beam: S10 × 25.4 (S10 inch tall × 25.4 lbf/ft)
L = 10.0 ft
P (lbf/ft) w_max (in) stress_max (psi)
25.4 7.90 × 10-4 123
30.0 9.33 × 10-4 145
40.0 0.00124 194
50.0 0.00156 242
60.0 0.00187 290
70.0 0.00218 339
80.0 0.00249 387
90.0 0.00280 435
100 0.00311 484
200 0.00622 968
300 0.00933 1450
400 0.0124 1940
500 0.0156 2420
600 0.0187 2900
700 0.0218 3390
800 0.0249 3870
900 0.0280 4350
1000 0.0311 4840
2000 0.0622 9680
3000 0.0933 1.45 × 104
4000 0.124 1.94 × 104
5000 0.156 2.42 × 104
6000 0.187 2.90 × 104
7000 0.218 3.39 × 104
8000 0.249 3.87 × 104
9000 0.280 4.35 × 104
1.00 × 104 0.311 4.84 × 104
2.00 × 104 0.622 9.68 × 104
3.00 × 104 0.933 1.45 × 105
4.00 × 104 1.24 1.94 × 105
5.00 × 104 1.56 2.42 × 105
6.00 × 104 1.87 2.90 × 105
6.14 × 104 1.91 2.97 × 105
Steel I Beam: S10 × 25.4 (S10 inch tall × 25.4 lbf/ft)
L = 15.0 ft
P (lbf/ft) w_max (in) stress_max (psi)
25.4 0.00400 277
30.0 0.00473 327
40.0 0.00630 435
50.0 0.00788 544
60.0 0.00945 653
70.0 0.0110 762
80.0 0.0126 871
90.0 0.0142 980
100 0.0158 1090
200 0.0315 2180
300 0.0473 3270
400 0.0630 4350
500 0.0788 5440
600 0.0945 6530
700 0.110 7620
800 0.126 8710
900 0.142 9800
1000 0.158 1.09 × 104
2000 0.315 2.18 × 104
3000 0.473 3.27 × 104
4000 0.630 4.35 × 104
5000 0.788 5.44 × 104
6000 0.945 6.53 × 104
7000 1.10 7.62 × 104
8000 1.26 8.71 × 104
9000 1.42 9.80 × 104
1.00 × 104 1.58 1.09 × 105
2.00 × 104 3.15 2.18 × 105
2.73 × 104 4.30 2.97 × 105
Steel I Beam: S10 × 25.4 (S10 inch tall × 25.4 lbf/ft)
L = 20.0 ft
P (lbf/ft) w_max (in) stress_max (psi)
25.4 0.0126 492
30.0 0.0149 581
40.0 0.0199 774
50.0 0.0249 968
60.0 0.0299 1160
70.0 0.0348 1350
80.0 0.0398 1550
90.0 0.0448 1740
100 0.0498 1940
200 0.0996 3870
300 0.149 5810
400 0.199 7740
500 0.249 9680
600 0.299 1.16 × 104
700 0.348 1.35 × 104
800 0.398 1.55 × 104
900 0.448 1.74 × 104
1000 0.498 1.94 × 104
2000 0.996 3.87 × 104
3000 1.49 5.81 × 104
4000 1.99 7.74 × 104
5000 2.49 9.68 × 104
6000 2.99 1.16 × 105
7000 3.48 1.35 × 105
8000 3.98 1.55 × 105
9000 4.48 1.74 × 105
1.00 × 104 4.98 1.94 × 105
1.53 × 104 7.64 2.97 × 105
Steel I Beam: S10 × 25.4 (S10 inch tall × 25.4 lbf/ft)
L = 25.0 ft
P (lbf/ft) w_max (in) stress_max (psi)
25.4 0.0309 768
30.0 0.0365 907
40.0 0.0486 1210
50.0 0.0608 1510
60.0 0.0729 1810
70.0 0.0851 2120
80.0 0.0972 2420
90.0 0.109 2720
100 0.122 3020
200 0.243 6050
300 0.365 9070
400 0.486 1.21 × 104
500 0.608 1.51 × 104
600 0.729 1.81 × 104
700 0.851 2.12 × 104
800 0.972 2.42 × 104
900 1.09 2.72 × 104
1000 1.22 3.02 × 104
2000 2.43 6.05 × 104
3000 3.65 9.07 × 104
4000 4.86 1.21 × 105
5000 6.08 1.51 × 105
6000 7.29 1.81 × 105
7000 8.51 2.12 × 105
8000 9.72 2.42 × 105
8230 10.0 2.49 × 105
Steel I Beam: S10 × 25.4 (S10 inch tall × 25.4 lbf/ft)
L = 30.0 ft
P (lbf/ft) w_max (in) stress_max (psi)
25.4 0.0640 1110
30.0 0.0756 1310
40.0 0.101 1740
50.0 0.126 2180
60.0 0.151 2610
70.0 0.176 3050
80.0 0.202 3480
90.0 0.227 3920
100 0.252 4350
200 0.504 8710
300 0.756 1.31 × 104
400 1.01 1.74 × 104
500 1.26 2.18 × 104
600 1.51 2.61 × 104
700 1.76 3.05 × 104
800 2.02 3.48 × 104
900 2.27 3.92 × 104
1000 2.52 4.35 × 104
2000 5.04 8.71 × 104
3000 7.56 1.31 × 105
3970 10.0 1.73 × 105
Steel I Beam: S10 × 25.4 (S10 inch tall × 25.4 lbf/ft)
L = 40.0 ft
P (lbf/ft) w_max (in) stress_max (psi)
25.4 0.202 1970
30.0 0.239 2320
40.0 0.319 3100
50.0 0.398 3870
60.0 0.478 4650
70.0 0.558 5420
80.0 0.637 6190
90.0 0.717 6970
100 0.796 7740
200 1.59 1.55 × 104
300 2.39 2.32 × 104
400 3.19 3.10 × 104
500 3.98 3.87 × 104
600 4.78 4.65 × 104
700 5.58 5.42 × 104
800 6.37 6.19 × 104
900 7.17 6.97 × 104
1000 7.96 7.74 × 104
1260 10.0 9.72 × 104
Steel I Beam: S10 × 25.4 (S10 inch tall × 25.4 lbf/ft)
L = 50.0 ft
P (lbf/ft) w_max (in) stress_max (psi)
25.4 0.494 3070
30.0 0.583 3630
40.0 0.778 4840
50.0 0.972 6050
60.0 1.17 7260
70.0 1.36 8470
80.0 1.56 9680
90.0 1.75 1.09 × 104
100 1.94 1.21 × 104
200 3.89 2.42 × 104
300 5.83 3.63 × 104
400 7.78 4.84 × 104
500 9.72 6.05 × 104
514 10.0 6.22 × 104
Steel I Beam: S10 × 25.4 (S10 inch tall × 25.4 lbf/ft)
L = 60.0 ft
P (lbf/ft) w_max (in) stress_max (psi)
25.4 1.02 4420
30.0 1.21 5230
40.0 1.61 6970
50.0 2.02 8710
60.0 2.42 1.05 × 104
70.0 2.82 1.22 × 104
80.0 3.23 1.39 × 104
90.0 3.63 1.57 × 104
100 4.03 1.74 × 104
200 8.06 3.48 × 104
248 10.0 4.32 × 104
Steel I Beam: S10 × 25.4 (S10 inch tall × 25.4 lbf/ft)
L = 70.0 ft
P (lbf/ft) w_max (in) stress_max (psi)
25.4 1.90 6020
30.0 2.24 7110
40.0 2.99 9480
50.0 3.74 1.19 × 104
60.0 4.48 1.42 × 104
70.0 5.23 1.66 × 104
80.0 5.98 1.90 × 104
90.0 6.72 2.13 × 104
100 7.47 2.37 × 104
134 10.0 3.17 × 104
Steel I Beam: S10 × 25.4 (S10 inch tall × 25.4 lbf/ft)
L = 80.0 ft
P (lbf/ft) w_max (in) stress_max (psi)
25.4 3.24 7870
30.0 3.82 9290
40.0 5.10 1.24 × 104
50.0 6.37 1.55 × 104
60.0 7.65 1.86 × 104
70.0 8.92 2.17 × 104
78.5 10.0 2.43 × 104
Steel I Beam: S10 × 25.4 (S10 inch tall × 25.4 lbf/ft)
L = 90.0 ft
P (lbf/ft) w_max (in) stress_max (psi)
25.4 5.18 9960
30.0 6.12 1.18 × 104
40.0 8.17 1.57 × 104
49.0 10.0 1.92 × 104
Steel I Beam: S10 × 25.4 (S10 inch tall × 25.4 lbf/ft)
L = 100 ft
P (lbf/ft) w_max (in) stress_max (psi)
25.4 7.90 1.23 × 104
30.0 9.33 1.45 × 104
32.1 10.0 1.56 × 104
Additional Information
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CNC Machining Design Guide

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

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8 things to know about the interview question "What's your salary expectation"?

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Guide for those interested in becoming a mechanical engineer. Includes qualifications, pay, and job duties.

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