Metal 3D Printing Design Guide

Direct Metal Laser Sintering (DMLS) 3D printing for parts with reduced cost and little waste.

Essentials of Manufacturing

Information, coverage of important developments and expert commentary in manufacturing.

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.

more free publications

Materials

Design

Processes

Units

Formulas

Math
Glossary » Beams » Simply Supported » Uniformly Distributed Load » Two Equal Spans » Wide Flange Steel I Beam » W14 × 74
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 = 796 in4) for the W14 × 74 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
L = 90 ft
L = 100 ft
L = 125 ft
L = 150 ft
   
Steel I Beam: W14 × 74 (Wide Flange 14 inch tall × 74 lbf/ft)
L = 3.00 ft
P (lbf/ft) w_max (in) stress_max (psi)
74.0 2.23 × 10-6 8.89
80.0 2.41 × 10-6 9.61
90.0 2.71 × 10-6 10.8
100 3.01 × 10-6 12.0
200 6.01 × 10-6 24.0
300 9.02 × 10-6 36.0
400 1.20 × 10-5 48.1
500 1.50 × 10-5 60.1
600 1.80 × 10-5 72.1
700 2.10 × 10-5 84.1
800 2.41 × 10-5 96.1
900 2.71 × 10-5 108
1000 3.01 × 10-5 120
2000 6.01 × 10-5 240
3000 9.02 × 10-5 360
4000 1.20 × 10-4 481
5000 1.50 × 10-4 601
6000 1.80 × 10-4 721
7000 2.10 × 10-4 841
8000 2.41 × 10-4 961
9000 2.71 × 10-4 1080
1.00 × 104 3.01 × 10-4 1200
2.00 × 104 6.01 × 10-4 2400
3.00 × 104 9.02 × 10-4 3600
4.00 × 104 0.00120 4810
5.00 × 104 0.00150 6010
6.00 × 104 0.00180 7210
7.00 × 104 0.00210 8410
8.00 × 104 0.00241 9610
9.00 × 104 0.00271 1.08 × 104
1.00 × 105 0.00301 1.20 × 104
2.00 × 105 0.00601 2.40 × 104
3.00 × 105 0.00902 3.60 × 104
4.00 × 105 0.0120 4.81 × 104
5.00 × 105 0.0150 6.01 × 104
6.00 × 105 0.0180 7.21 × 104
7.00 × 105 0.0210 8.41 × 104
8.00 × 105 0.0241 9.61 × 104
9.00 × 105 0.0271 1.08 × 105
1.00 × 106 0.0301 1.20 × 105
2.00 × 106 0.0601 2.40 × 105
2.47 × 106 0.0743 2.97 × 105
Steel I Beam: W14 × 74 (Wide Flange 14 inch tall × 74 lbf/ft)
L = 5.00 ft
P (lbf/ft) w_max (in) stress_max (psi)
74.0 1.72 × 10-5 24.7
80.0 1.86 × 10-5 26.7
90.0 2.09 × 10-5 30.0
100 2.32 × 10-5 33.4
200 4.64 × 10-5 66.8
300 6.96 × 10-5 100
400 9.28 × 10-5 134
500 1.16 × 10-4 167
600 1.39 × 10-4 200
700 1.62 × 10-4 234
800 1.86 × 10-4 267
900 2.09 × 10-4 300
1000 2.32 × 10-4 334
2000 4.64 × 10-4 668
3000 6.96 × 10-4 1000
4000 9.28 × 10-4 1340
5000 0.00116 1670
6000 0.00139 2000
7000 0.00162 2340
8000 0.00186 2670
9000 0.00209 3000
1.00 × 104 0.00232 3340
2.00 × 104 0.00464 6680
3.00 × 104 0.00696 1.00 × 104
4.00 × 104 0.00928 1.34 × 104
5.00 × 104 0.0116 1.67 × 104
6.00 × 104 0.0139 2.00 × 104
7.00 × 104 0.0162 2.34 × 104
8.00 × 104 0.0186 2.67 × 104
9.00 × 104 0.0209 3.00 × 104
1.00 × 105 0.0232 3.34 × 104
2.00 × 105 0.0464 6.68 × 104
3.00 × 105 0.0696 1.00 × 105
4.00 × 105 0.0928 1.34 × 105
5.00 × 105 0.116 1.67 × 105
6.00 × 105 0.139 2.00 × 105
7.00 × 105 0.162 2.34 × 105
8.00 × 105 0.186 2.67 × 105
8.90 × 105 0.206 2.97 × 105
Steel I Beam: W14 × 74 (Wide Flange 14 inch tall × 74 lbf/ft)
L = 10.0 ft
P (lbf/ft) w_max (in) stress_max (psi)
74.0 2.75 × 10-4 98.8
80.0 2.97 × 10-4 107
90.0 3.34 × 10-4 120
100 3.71 × 10-4 134
200 7.42 × 10-4 267
300 0.00111 401
400 0.00148 534
500 0.00186 668
600 0.00223 801
700 0.00260 935
800 0.00297 1070
900 0.00334 1200
1000 0.00371 1340
2000 0.00742 2670
3000 0.0111 4010
4000 0.0148 5340
5000 0.0186 6680
6000 0.0223 8010
7000 0.0260 9350
8000 0.0297 1.07 × 104
9000 0.0334 1.20 × 104
1.00 × 104 0.0371 1.34 × 104
2.00 × 104 0.0742 2.67 × 104
3.00 × 104 0.111 4.01 × 104
4.00 × 104 0.148 5.34 × 104
5.00 × 104 0.186 6.68 × 104
6.00 × 104 0.223 8.01 × 104
7.00 × 104 0.260 9.35 × 104
8.00 × 104 0.297 1.07 × 105
9.00 × 104 0.334 1.20 × 105
1.00 × 105 0.371 1.34 × 105
2.00 × 105 0.742 2.67 × 105
2.22 × 105 0.826 2.97 × 105
Steel I Beam: W14 × 74 (Wide Flange 14 inch tall × 74 lbf/ft)
L = 15.0 ft
P (lbf/ft) w_max (in) stress_max (psi)
74.0 0.00139 222
80.0 0.00150 240
90.0 0.00169 270
100 0.00188 300
200 0.00376 601
300 0.00564 901
400 0.00752 1200
500 0.00940 1500
600 0.0113 1800
700 0.0132 2100
800 0.0150 2400
900 0.0169 2700
1000 0.0188 3000
2000 0.0376 6010
3000 0.0564 9010
4000 0.0752 1.20 × 104
5000 0.0940 1.50 × 104
6000 0.113 1.80 × 104
7000 0.132 2.10 × 104
8000 0.150 2.40 × 104
9000 0.169 2.70 × 104
1.00 × 104 0.188 3.00 × 104
2.00 × 104 0.376 6.01 × 104
3.00 × 104 0.564 9.01 × 104
4.00 × 104 0.752 1.20 × 105
5.00 × 104 0.940 1.50 × 105
6.00 × 104 1.13 1.80 × 105
7.00 × 104 1.32 2.10 × 105
8.00 × 104 1.50 2.40 × 105
9.00 × 104 1.69 2.70 × 105
9.89 × 104 1.86 2.97 × 105
Steel I Beam: W14 × 74 (Wide Flange 14 inch tall × 74 lbf/ft)
L = 20.0 ft
P (lbf/ft) w_max (in) stress_max (psi)
74.0 0.00440 395
80.0 0.00475 427
90.0 0.00535 481
100 0.00594 534
200 0.0119 1070
300 0.0178 1600
400 0.0238 2140
500 0.0297 2670
600 0.0356 3200
700 0.0416 3740
800 0.0475 4270
900 0.0535 4810
1000 0.0594 5340
2000 0.119 1.07 × 104
3000 0.178 1.60 × 104
4000 0.238 2.14 × 104
5000 0.297 2.67 × 104
6000 0.356 3.20 × 104
7000 0.416 3.74 × 104
8000 0.475 4.27 × 104
9000 0.535 4.81 × 104
1.00 × 104 0.594 5.34 × 104
2.00 × 104 1.19 1.07 × 105
3.00 × 104 1.78 1.60 × 105
4.00 × 104 2.38 2.14 × 105
5.00 × 104 2.97 2.67 × 105
5.56 × 104 3.30 2.97 × 105
Steel I Beam: W14 × 74 (Wide Flange 14 inch tall × 74 lbf/ft)
L = 25.0 ft
P (lbf/ft) w_max (in) stress_max (psi)
74.0 0.0107 617
80.0 0.0116 668
90.0 0.0131 751
100 0.0145 834
200 0.0290 1670
300 0.0435 2500
400 0.0580 3340
500 0.0725 4170
600 0.0870 5010
700 0.102 5840
800 0.116 6680
900 0.131 7510
1000 0.145 8340
2000 0.290 1.67 × 104
3000 0.435 2.50 × 104
4000 0.580 3.34 × 104
5000 0.725 4.17 × 104
6000 0.870 5.01 × 104
7000 1.02 5.84 × 104
8000 1.16 6.68 × 104
9000 1.31 7.51 × 104
1.00 × 104 1.45 8.34 × 104
2.00 × 104 2.90 1.67 × 105
3.00 × 104 4.35 2.50 × 105
3.56 × 104 5.16 2.97 × 105
Steel I Beam: W14 × 74 (Wide Flange 14 inch tall × 74 lbf/ft)
L = 30.0 ft
P (lbf/ft) w_max (in) stress_max (psi)
74.0 0.0223 889
80.0 0.0241 961
90.0 0.0271 1080
100 0.0301 1200
200 0.0601 2400
300 0.0902 3600
400 0.120 4810
500 0.150 6010
600 0.180 7210
700 0.210 8410
800 0.241 9610
900 0.271 1.08 × 104
1000 0.301 1.20 × 104
2000 0.601 2.40 × 104
3000 0.902 3.60 × 104
4000 1.20 4.81 × 104
5000 1.50 6.01 × 104
6000 1.80 7.21 × 104
7000 2.10 8.41 × 104
8000 2.41 9.61 × 104
9000 2.71 1.08 × 105
1.00 × 104 3.01 1.20 × 105
2.00 × 104 6.01 2.40 × 105
2.47 × 104 7.43 2.97 × 105
Steel I Beam: W14 × 74 (Wide Flange 14 inch tall × 74 lbf/ft)
L = 40.0 ft
P (lbf/ft) w_max (in) stress_max (psi)
74.0 0.0703 1580
80.0 0.0760 1710
90.0 0.0855 1920
100 0.0950 2140
200 0.190 4270
300 0.285 6410
400 0.380 8540
500 0.475 1.07 × 104
600 0.570 1.28 × 104
700 0.665 1.50 × 104
800 0.760 1.71 × 104
900 0.855 1.92 × 104
1000 0.950 2.14 × 104
2000 1.90 4.27 × 104
3000 2.85 6.41 × 104
4000 3.80 8.54 × 104
5000 4.75 1.07 × 105
6000 5.70 1.28 × 105
7000 6.65 1.50 × 105
8000 7.60 1.71 × 105
9000 8.55 1.92 × 105
1.00 × 104 9.50 2.14 × 105
1.39 × 104 13.2 2.97 × 105
Steel I Beam: W14 × 74 (Wide Flange 14 inch tall × 74 lbf/ft)
L = 50.0 ft
P (lbf/ft) w_max (in) stress_max (psi)
74.0 0.172 2470
80.0 0.186 2670
90.0 0.209 3000
100 0.232 3340
200 0.464 6680
300 0.696 1.00 × 104
400 0.928 1.34 × 104
500 1.16 1.67 × 104
600 1.39 2.00 × 104
700 1.62 2.34 × 104
800 1.86 2.67 × 104
900 2.09 3.00 × 104
1000 2.32 3.34 × 104
2000 4.64 6.68 × 104
3000 6.96 1.00 × 105
4000 9.28 1.34 × 105
5000 11.6 1.67 × 105
6000 13.9 2.00 × 105
6110 14.2 2.04 × 105
Steel I Beam: W14 × 74 (Wide Flange 14 inch tall × 74 lbf/ft)
L = 60.0 ft
P (lbf/ft) w_max (in) stress_max (psi)
74.0 0.356 3560
80.0 0.385 3850
90.0 0.433 4330
100 0.481 4810
200 0.962 9610
300 1.44 1.44 × 104
400 1.92 1.92 × 104
500 2.41 2.40 × 104
600 2.89 2.88 × 104
700 3.37 3.36 × 104
800 3.85 3.85 × 104
900 4.33 4.33 × 104
1000 4.81 4.81 × 104
2000 9.62 9.61 × 104
2950 14.2 1.42 × 105
Steel I Beam: W14 × 74 (Wide Flange 14 inch tall × 74 lbf/ft)
L = 70.0 ft
P (lbf/ft) w_max (in) stress_max (psi)
74.0 0.660 4840
80.0 0.713 5230
90.0 0.802 5890
100 0.891 6540
200 1.78 1.31 × 104
300 2.67 1.96 × 104
400 3.57 2.62 × 104
500 4.46 3.27 × 104
600 5.35 3.93 × 104
700 6.24 4.58 × 104
800 7.13 5.23 × 104
900 8.02 5.89 × 104
1000 8.91 6.54 × 104
1590 14.2 1.04 × 105
Steel I Beam: W14 × 74 (Wide Flange 14 inch tall × 74 lbf/ft)
L = 80.0 ft
P (lbf/ft) w_max (in) stress_max (psi)
74.0 1.13 6320
80.0 1.22 6840
90.0 1.37 7690
100 1.52 8540
200 3.04 1.71 × 104
300 4.56 2.56 × 104
400 6.08 3.42 × 104
500 7.60 4.27 × 104
600 9.12 5.13 × 104
700 10.6 5.98 × 104
800 12.2 6.84 × 104
900 13.7 7.69 × 104
932 14.2 7.96 × 104
Steel I Beam: W14 × 74 (Wide Flange 14 inch tall × 74 lbf/ft)
L = 90.0 ft
P (lbf/ft) w_max (in) stress_max (psi)
74.0 1.80 8000
80.0 1.95 8650
90.0 2.19 9730
100 2.44 1.08 × 104
200 4.87 2.16 × 104
300 7.31 3.24 × 104
400 9.74 4.33 × 104
500 12.2 5.41 × 104
582 14.2 6.29 × 104
Steel I Beam: W14 × 74 (Wide Flange 14 inch tall × 74 lbf/ft)
L = 100 ft
P (lbf/ft) w_max (in) stress_max (psi)
74.0 2.75 9880
80.0 2.97 1.07 × 104
90.0 3.34 1.20 × 104
100 3.71 1.34 × 104
200 7.42 2.67 × 104
300 11.1 4.01 × 104
382 14.2 5.10 × 104
Steel I Beam: W14 × 74 (Wide Flange 14 inch tall × 74 lbf/ft)
L = 125 ft
P (lbf/ft) w_max (in) stress_max (psi)
74.0 6.71 1.54 × 104
80.0 7.25 1.67 × 104
90.0 8.16 1.88 × 104
100 9.06 2.09 × 104
156 14.2 3.26 × 104
Steel I Beam: W14 × 74 (Wide Flange 14 inch tall × 74 lbf/ft)
L = 150 ft
P (lbf/ft) w_max (in) stress_max (psi)
74.0 13.9 2.22 × 104
75.4 14.2 2.27 × 104
Additional Information
Related Pages
FREE Publications
Metal 3D Printing Design Guide

Direct Metal Laser Sintering (DMLS) 3D printing for parts with reduced cost and little waste.

Essentials of Manufacturing

Information, coverage of important developments and expert commentary in manufacturing.

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.

more publications