Properties - Joists

Welcome to our Joist properties page! Here you'll find properties for all UK Joist steel sections described by the Steelwork Design Guide to BS5950-1:2000, Volume 1, Section Properties, Member Capacities, 7th Edition (also known as The Blue Book). Sort the table below according to any property and select a CAD file to download using the reference links in the left-most column. You can also purchase all our CAD data in one easy download, containing the sections as individual files and AutoCAD Design Center files or Microstation cel libraries - just click on the Shop button in the navigation above.

Section Reference Second Moment of Area Radius of Gyration Elastic Modulus Plastic Modulus Buckling Parameter Torsional Index Warping Constant Torsional Constant Area of Section
  Axis
x-x
Axis
y-y
Axis
x-x
Axis
y-y
Axis
x-x
Axis
y-y
Axis
x-x
Axis
y-y
         
  cm4 cm4 cm cm cm3 cm3 cm3 cm3 u x H
dm6
J
cm4
A
cm2
254x203x82 12000 2280 10.7 4.67 947 224 1080 371 0.888 11 0.312 152 105
254x114x37 5080 269 10.4 2.39 400 47.1 459 79.1 0.885 18.7 0.0392 25.2 47.3
203x152x52 4800 816 8.49 3.5 472 107 541 176 0.89 10.7 0.0711 64.8 66.6
152x127x37 1820 378 6.19 2.82 239 59.6 279 99.8 0.867 9.33 0.0183 33.9 47.5
127x114x29 979 242 5.12 2.54 154 42.3 181 70.8 0.853 8.77 0.00807 20.8 37.4
127x114x27 946 236 5.26 2.63 149 41.3 172 68.2 0.868 9.31 0.00788 16.9 34.2
127x76x16 571 60.8 5.21 1.7 90 16 104 26.4 0.891 11.8 0.0021 6.72 21.1
114x114x27 736 224 4.62 2.55 129 39.2 151 65.8 0.839 7.92 0.00601 18.9 34.5
102x102x23 486 154 4.07 2.29 95.6 30.3 113 50.6 0.836 7.42 0.00321 14.2 29.3
102x44x7 153 7.82 4.01 0.907 30.1 3.51 35.4 6.03 0.872 14.9 0.000178 1.25 9.5
89x89x19 307 101 3.51 2.02 69 22.8 82.7 38 0.83 6.58 0.00158 11.5 24.9
76x76x15 172 60.9 3 1.78 45.2 15.2 54.2 25.8 0.82 6.42 0.0007 6.83 19.1
76x76x13 158 51.8 3.12 1.79 41.5 13.6 48.7 22.4 0.853 7.21 0.000595 4.59 16.2