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 shapes as individual files or AutoCAD Design Center files! Click here to visit our Shop.

Section ReferenceSecond Moment of AreaRadius of GyrationElastic ModulusPlastic ModulusBuckling ParameterTorsional IndexWarping ConstantTorsional ConstantArea of Section
 Axis
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 cm4cm4cmcmcm3cm3cm3cm3uxH
dm6
J
cm4
A
cm2
254x203x8212000228010.74.6794722410803710.888110.312152105
254x114x37508026910.42.3940047.145979.10.88518.70.039225.247.3
203x152x5248008168.493.54721075411760.8910.70.071164.866.6
152x127x3718203786.192.8223959.627999.80.8679.330.018333.947.5
127x114x299792425.122.5415442.318170.80.8538.770.0080720.837.4
127x114x279462365.262.6314941.317268.20.8689.310.0078816.934.2
127x76x1657160.85.211.7901610426.40.89111.80.00216.7221.1
114x114x277362244.622.5512939.215165.80.8397.920.0060118.934.5
102x102x234861544.072.2995.630.311350.60.8367.420.0032114.229.3
102x44x71537.824.010.90730.13.5135.46.030.87214.90.0001781.259.5
89x89x193071013.512.026922.882.7380.836.580.0015811.524.9
76x76x1517260.931.7845.215.254.225.80.826.420.00076.8319.1
76x76x1315851.83.121.7941.513.648.722.40.8537.210.0005954.5916.2