Injection Molding Design Guide

Guide for high quality and cost-effective plastic injection molding.

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Glossary » Beams » Simply Supported » Uniformly Distributed Load » Single Span » Wide Flange Steel I Beam » W5 × 19
Wide Flange Steel 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 (Ixx = 26.2 in4) for the W5 × 19 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
  
Steel I Beam: W5 × 19 (Wide Flange 5 inch tall × 19 lbf/ft)
L = 3.00 ft
P (lbf/ft) w_max (in) stress_max (psi)
19.0 4.34 × 10-5 25.2
20.0 4.57 × 10-5 26.5
30.0 6.85 × 10-5 39.8
40.0 9.14 × 10-5 53.1
50.0 1.14 × 10-4 66.3
60.0 1.37 × 10-4 79.6
70.0 1.60 × 10-4 92.9
80.0 1.83 × 10-4 106
90.0 2.06 × 10-4 119
100 2.28 × 10-4 133
200 4.57 × 10-4 265
300 6.85 × 10-4 398
400 9.14 × 10-4 531
500 0.00114 663
600 0.00137 796
700 0.00160 929
800 0.00183 1060
900 0.00206 1190
1000 0.00228 1330
2000 0.00457 2650
3000 0.00685 3980
4000 0.00914 5310
5000 0.0114 6630
6000 0.0137 7960
7000 0.0160 9290
8000 0.0183 1.06 × 104
9000 0.0206 1.19 × 104
1.00 × 104 0.0228 1.33 × 104
2.00 × 104 0.0457 2.65 × 104
3.00 × 104 0.0685 3.98 × 104
4.00 × 104 0.0914 5.31 × 104
5.00 × 104 0.114 6.63 × 104
6.00 × 104 0.137 7.96 × 104
7.00 × 104 0.160 9.29 × 104
8.00 × 104 0.183 1.06 × 105
9.00 × 104 0.206 1.19 × 105
1.00 × 105 0.228 1.33 × 105
2.00 × 105 0.457 2.65 × 105
2.24 × 105 0.511 2.97 × 105
Steel I Beam: W5 × 19 (Wide Flange 5 inch tall × 19 lbf/ft)
L = 5.00 ft
P (lbf/ft) w_max (in) stress_max (psi)
19.0 3.35 × 10-4 70.0
20.0 3.52 × 10-4 73.7
30.0 5.29 × 10-4 111
40.0 7.05 × 10-4 147
50.0 8.81 × 10-4 184
60.0 0.00106 221
70.0 0.00123 258
80.0 0.00141 295
90.0 0.00159 332
100 0.00176 369
200 0.00352 737
300 0.00529 1110
400 0.00705 1470
500 0.00881 1840
600 0.0106 2210
700 0.0123 2580
800 0.0141 2950
900 0.0159 3320
1000 0.0176 3690
2000 0.0352 7370
3000 0.0529 1.11 × 104
4000 0.0705 1.47 × 104
5000 0.0881 1.84 × 104
6000 0.106 2.21 × 104
7000 0.123 2.58 × 104
8000 0.141 2.95 × 104
9000 0.159 3.32 × 104
1.00 × 104 0.176 3.69 × 104
2.00 × 104 0.352 7.37 × 104
3.00 × 104 0.529 1.11 × 105
4.00 × 104 0.705 1.47 × 105
5.00 × 104 0.881 1.84 × 105
6.00 × 104 1.06 2.21 × 105
7.00 × 104 1.23 2.58 × 105
8.00 × 104 1.41 2.95 × 105
8.06 × 104 1.42 2.97 × 105
Steel I Beam: W5 × 19 (Wide Flange 5 inch tall × 19 lbf/ft)
L = 10.0 ft
P (lbf/ft) w_max (in) stress_max (psi)
19.0 0.00536 280
20.0 0.00564 295
30.0 0.00846 442
40.0 0.0113 590
50.0 0.0141 737
60.0 0.0169 885
70.0 0.0197 1030
80.0 0.0226 1180
90.0 0.0254 1330
100 0.0282 1470
200 0.0564 2950
300 0.0846 4420
400 0.113 5900
500 0.141 7370
600 0.169 8850
700 0.197 1.03 × 104
800 0.226 1.18 × 104
900 0.254 1.33 × 104
1000 0.282 1.47 × 104
2000 0.564 2.95 × 104
3000 0.846 4.42 × 104
4000 1.13 5.90 × 104
5000 1.41 7.37 × 104
6000 1.69 8.85 × 104
7000 1.97 1.03 × 105
8000 2.26 1.18 × 105
9000 2.54 1.33 × 105
1.00 × 104 2.82 1.47 × 105
1.83 × 104 5.15 2.69 × 105
Steel I Beam: W5 × 19 (Wide Flange 5 inch tall × 19 lbf/ft)
L = 15.0 ft
P (lbf/ft) w_max (in) stress_max (psi)
19.0 0.0271 630
20.0 0.0285 663
30.0 0.0428 995
40.0 0.0571 1330
50.0 0.0714 1660
60.0 0.0856 1990
70.0 0.0999 2320
80.0 0.114 2650
90.0 0.128 2990
100 0.143 3320
200 0.285 6630
300 0.428 9950
400 0.571 1.33 × 104
500 0.714 1.66 × 104
600 0.856 1.99 × 104
700 0.999 2.32 × 104
800 1.14 2.65 × 104
900 1.28 2.99 × 104
1000 1.43 3.32 × 104
2000 2.85 6.63 × 104
3000 4.28 9.95 × 104
3610 5.15 1.20 × 105
Steel I Beam: W5 × 19 (Wide Flange 5 inch tall × 19 lbf/ft)
L = 20.0 ft
P (lbf/ft) w_max (in) stress_max (psi)
19.0 0.0857 1120
20.0 0.0902 1180
30.0 0.135 1770
40.0 0.180 2360
50.0 0.226 2950
60.0 0.271 3540
70.0 0.316 4130
80.0 0.361 4720
90.0 0.406 5310
100 0.451 5900
200 0.902 1.18 × 104
300 1.35 1.77 × 104
400 1.80 2.36 × 104
500 2.26 2.95 × 104
600 2.71 3.54 × 104
700 3.16 4.13 × 104
800 3.61 4.72 × 104
900 4.06 5.31 × 104
1000 4.51 5.90 × 104
1140 5.15 6.73 × 104
Steel I Beam: W5 × 19 (Wide Flange 5 inch tall × 19 lbf/ft)
L = 25.0 ft
P (lbf/ft) w_max (in) stress_max (psi)
19.0 0.209 1750
20.0 0.220 1840
30.0 0.330 2760
40.0 0.441 3690
50.0 0.551 4610
60.0 0.661 5530
70.0 0.771 6450
80.0 0.881 7370
90.0 0.991 8290
100 1.10 9210
200 2.20 1.84 × 104
300 3.30 2.76 × 104
400 4.41 3.69 × 104
468 5.15 4.31 × 104
Steel I Beam: W5 × 19 (Wide Flange 5 inch tall × 19 lbf/ft)
L = 30.0 ft
P (lbf/ft) w_max (in) stress_max (psi)
19.0 0.434 2520
20.0 0.457 2650
30.0 0.685 3980
40.0 0.914 5310
50.0 1.14 6630
60.0 1.37 7960
70.0 1.60 9290
80.0 1.83 1.06 × 104
90.0 2.06 1.19 × 104
100 2.28 1.33 × 104
200 4.57 2.65 × 104
225 5.15 2.99 × 104
Steel I Beam: W5 × 19 (Wide Flange 5 inch tall × 19 lbf/ft)
L = 40.0 ft
P (lbf/ft) w_max (in) stress_max (psi)
19.0 1.37 4480
20.0 1.44 4720
30.0 2.17 7080
40.0 2.89 9440
50.0 3.61 1.18 × 104
60.0 4.33 1.42 × 104
70.0 5.05 1.65 × 104
71.3 5.15 1.68 × 104
Steel I Beam: W5 × 19 (Wide Flange 5 inch tall × 19 lbf/ft)
L = 50.0 ft
P (lbf/ft) w_max (in) stress_max (psi)
19.0 3.35 7000
20.0 3.52 7370
29.2 5.15 1.08 × 104
Additional Information
Related Pages
Glossary
Injection Molding Design Guide

Guide for high quality and cost-effective plastic injection molding.

STEM Career Outlook

Wages, employment opportunities, and growth projections for STEM jobs.

CNC Machining Design Guide

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

Mechanical Engineers Outlook

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