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Wide Flange Steel I Beam: W6 × 25
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Glossary » Beams » Simply Supported » Uniformly Distributed Load » Two Equal Spans » Wide Flange Steel I Beam » W6 × 25
Wide Flange Steel I Beam | Single Span | Two Equal Spans | Three Equal Spans | Four Equal Spans

For a simply supported beam in two equal spans, we compute the displacement at the middle of each span w_mid and the maximum normal stress stress_max occuring at the center support of the beam.
The tabulated data listed in this page are calculated based on the area moment of inertia (Ixx = 53.4 in4) for the W6 × 25 Wide Flange 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
   
Steel I Beam: W6 × 25 (Wide Flange 6 inch tall × 25 lbf/ft)
L = 3.00 ft
P (lbf/ft) w_max (in) stress_max (psi)
25.0 1.12 × 10-5 20.2
30.0 1.34 × 10-5 24.2
40.0 1.79 × 10-5 32.3
50.0 2.24 × 10-5 40.3
60.0 2.69 × 10-5 48.4
70.0 3.14 × 10-5 56.5
80.0 3.59 × 10-5 64.5
90.0 4.03 × 10-5 72.6
100 4.48 × 10-5 80.6
200 8.96 × 10-5 161
300 1.34 × 10-4 242
400 1.79 × 10-4 323
500 2.24 × 10-4 403
600 2.69 × 10-4 484
700 3.14 × 10-4 565
800 3.59 × 10-4 645
900 4.03 × 10-4 726
1000 4.48 × 10-4 806
2000 8.96 × 10-4 1610
3000 0.00134 2420
4000 0.00179 3230
5000 0.00224 4030
6000 0.00269 4840
7000 0.00314 5650
8000 0.00359 6450
9000 0.00403 7260
1.00 × 104 0.00448 8060
2.00 × 104 0.00896 1.61 × 104
3.00 × 104 0.0134 2.42 × 104
4.00 × 104 0.0179 3.23 × 104
5.00 × 104 0.0224 4.03 × 104
6.00 × 104 0.0269 4.84 × 104
7.00 × 104 0.0314 5.65 × 104
8.00 × 104 0.0359 6.45 × 104
9.00 × 104 0.0403 7.26 × 104
1.00 × 105 0.0448 8.06 × 104
2.00 × 105 0.0896 1.61 × 105
3.00 × 105 0.134 2.42 × 105
3.68 × 105 0.165 2.97 × 105
Steel I Beam: W6 × 25 (Wide Flange 6 inch tall × 25 lbf/ft)
L = 5.00 ft
P (lbf/ft) w_max (in) stress_max (psi)
25.0 8.65 × 10-5 56.0
30.0 1.04 × 10-4 67.2
40.0 1.38 × 10-4 89.6
50.0 1.73 × 10-4 112
60.0 2.08 × 10-4 134
70.0 2.42 × 10-4 157
80.0 2.77 × 10-4 179
90.0 3.11 × 10-4 202
100 3.46 × 10-4 224
200 6.92 × 10-4 448
300 0.00104 672
400 0.00138 896
500 0.00173 1120
600 0.00208 1340
700 0.00242 1570
800 0.00277 1790
900 0.00311 2020
1000 0.00346 2240
2000 0.00692 4480
3000 0.0104 6720
4000 0.0138 8960
5000 0.0173 1.12 × 104
6000 0.0208 1.34 × 104
7000 0.0242 1.57 × 104
8000 0.0277 1.79 × 104
9000 0.0311 2.02 × 104
1.00 × 104 0.0346 2.24 × 104
2.00 × 104 0.0692 4.48 × 104
3.00 × 104 0.104 6.72 × 104
4.00 × 104 0.138 8.96 × 104
5.00 × 104 0.173 1.12 × 105
6.00 × 104 0.208 1.34 × 105
7.00 × 104 0.242 1.57 × 105
8.00 × 104 0.277 1.79 × 105
9.00 × 104 0.311 2.02 × 105
1.00 × 105 0.346 2.24 × 105
1.33 × 105 0.459 2.97 × 105
Steel I Beam: W6 × 25 (Wide Flange 6 inch tall × 25 lbf/ft)
L = 10.0 ft
P (lbf/ft) w_max (in) stress_max (psi)
25.0 0.00138 224
30.0 0.00166 269
40.0 0.00221 358
50.0 0.00277 448
60.0 0.00332 538
70.0 0.00387 627
80.0 0.00443 717
90.0 0.00498 806
100 0.00553 896
200 0.0111 1790
300 0.0166 2690
400 0.0221 3580
500 0.0277 4480
600 0.0332 5380
700 0.0387 6270
800 0.0443 7170
900 0.0498 8060
1000 0.0553 8960
2000 0.111 1.79 × 104
3000 0.166 2.69 × 104
4000 0.221 3.58 × 104
5000 0.277 4.48 × 104
6000 0.332 5.38 × 104
7000 0.387 6.27 × 104
8000 0.443 7.17 × 104
9000 0.498 8.06 × 104
1.00 × 104 0.553 8.96 × 104
2.00 × 104 1.11 1.79 × 105
3.00 × 104 1.66 2.69 × 105
3.31 × 104 1.83 2.97 × 105
Steel I Beam: W6 × 25 (Wide Flange 6 inch tall × 25 lbf/ft)
L = 15.0 ft
P (lbf/ft) w_max (in) stress_max (psi)
25.0 0.00700 504
30.0 0.00840 605
40.0 0.0112 806
50.0 0.0140 1010
60.0 0.0168 1210
70.0 0.0196 1410
80.0 0.0224 1610
90.0 0.0252 1810
100 0.0280 2020
200 0.0560 4030
300 0.0840 6050
400 0.112 8060
500 0.140 1.01 × 104
600 0.168 1.21 × 104
700 0.196 1.41 × 104
800 0.224 1.61 × 104
900 0.252 1.81 × 104
1000 0.280 2.02 × 104
2000 0.560 4.03 × 104
3000 0.840 6.05 × 104
4000 1.12 8.06 × 104
5000 1.40 1.01 × 105
6000 1.68 1.21 × 105
7000 1.96 1.41 × 105
8000 2.24 1.61 × 105
9000 2.52 1.81 × 105
1.00 × 104 2.80 2.02 × 105
1.47 × 104 4.13 2.97 × 105
Steel I Beam: W6 × 25 (Wide Flange 6 inch tall × 25 lbf/ft)
L = 20.0 ft
P (lbf/ft) w_max (in) stress_max (psi)
25.0 0.0221 896
30.0 0.0266 1080
40.0 0.0354 1430
50.0 0.0443 1790
60.0 0.0531 2150
70.0 0.0620 2510
80.0 0.0708 2870
90.0 0.0797 3230
100 0.0885 3580
200 0.177 7170
300 0.266 1.08 × 104
400 0.354 1.43 × 104
500 0.443 1.79 × 104
600 0.531 2.15 × 104
700 0.620 2.51 × 104
800 0.708 2.87 × 104
900 0.797 3.23 × 104
1000 0.885 3.58 × 104
2000 1.77 7.17 × 104
3000 2.66 1.08 × 105
4000 3.54 1.43 × 105
5000 4.43 1.79 × 105
6000 5.31 2.15 × 105
7000 6.20 2.51 × 105
7210 6.38 2.58 × 105
Steel I Beam: W6 × 25 (Wide Flange 6 inch tall × 25 lbf/ft)
L = 25.0 ft
P (lbf/ft) w_max (in) stress_max (psi)
25.0 0.0540 1400
30.0 0.0648 1680
40.0 0.0865 2240
50.0 0.108 2800
60.0 0.130 3360
70.0 0.151 3920
80.0 0.173 4480
90.0 0.195 5040
100 0.216 5600
200 0.432 1.12 × 104
300 0.648 1.68 × 104
400 0.865 2.24 × 104
500 1.08 2.80 × 104
600 1.30 3.36 × 104
700 1.51 3.92 × 104
800 1.73 4.48 × 104
900 1.95 5.04 × 104
1000 2.16 5.60 × 104
2000 4.32 1.12 × 105
2950 6.38 1.65 × 105
Steel I Beam: W6 × 25 (Wide Flange 6 inch tall × 25 lbf/ft)
L = 30.0 ft
P (lbf/ft) w_max (in) stress_max (psi)
25.0 0.112 2020
30.0 0.134 2420
40.0 0.179 3230
50.0 0.224 4030
60.0 0.269 4840
70.0 0.314 5650
80.0 0.359 6450
90.0 0.403 7260
100 0.448 8060
200 0.896 1.61 × 104
300 1.34 2.42 × 104
400 1.79 3.23 × 104
500 2.24 4.03 × 104
600 2.69 4.84 × 104
700 3.14 5.65 × 104
800 3.59 6.45 × 104
900 4.03 7.26 × 104
1000 4.48 8.06 × 104
1420 6.38 1.15 × 105
Steel I Beam: W6 × 25 (Wide Flange 6 inch tall × 25 lbf/ft)
L = 40.0 ft
P (lbf/ft) w_max (in) stress_max (psi)
25.0 0.354 3580
30.0 0.425 4300
40.0 0.567 5730
50.0 0.708 7170
60.0 0.850 8600
70.0 0.992 1.00 × 104
80.0 1.13 1.15 × 104
90.0 1.27 1.29 × 104
100 1.42 1.43 × 104
200 2.83 2.87 × 104
300 4.25 4.30 × 104
400 5.67 5.73 × 104
450 6.38 6.46 × 104
Steel I Beam: W6 × 25 (Wide Flange 6 inch tall × 25 lbf/ft)
L = 50.0 ft
P (lbf/ft) w_max (in) stress_max (psi)
25.0 0.865 5600
30.0 1.04 6720
40.0 1.38 8960
50.0 1.73 1.12 × 104
60.0 2.08 1.34 × 104
70.0 2.42 1.57 × 104
80.0 2.77 1.79 × 104
90.0 3.11 2.02 × 104
100 3.46 2.24 × 104
184 6.38 4.13 × 104
Steel I Beam: W6 × 25 (Wide Flange 6 inch tall × 25 lbf/ft)
L = 60.0 ft
P (lbf/ft) w_max (in) stress_max (psi)
25.0 1.79 8060
30.0 2.15 9680
40.0 2.87 1.29 × 104
50.0 3.59 1.61 × 104
60.0 4.30 1.94 × 104
70.0 5.02 2.26 × 104
80.0 5.74 2.58 × 104
89.0 6.38 2.87 × 104
Steel I Beam: W6 × 25 (Wide Flange 6 inch tall × 25 lbf/ft)
L = 70.0 ft
P (lbf/ft) w_max (in) stress_max (psi)
25.0 3.32 1.10 × 104
30.0 3.99 1.32 × 104
40.0 5.31 1.76 × 104
48.0 6.38 2.11 × 104
Steel I Beam: W6 × 25 (Wide Flange 6 inch tall × 25 lbf/ft)
L = 80.0 ft
P (lbf/ft) w_max (in) stress_max (psi)
25.0 5.67 1.43 × 104
28.1 6.38 1.61 × 104
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