Dimensions - Joists
Welcome to our Joist dimensions page! Here you'll find dimensions 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.
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| Section Reference | Mass per Metre | Depth of Section | Width of Section | Thickness | Radius | Depth between Fillets | Ratios for Local Buckling | Dimensions for Detailing | Surface Area | ||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Web | Flange | Root | Toe | Flange | Web | End Clearance | Notch | Per Metre | Per Tonne | ||||||
| kg/m | D mm | B mm | t mm | T mm | r1 mm | r2 mm | d mm | b/T | d/t | C mm | N mm | n mm | m2 | m2 | |
| 254x203x82 | 82 | 254 | 203.2 | 10.2 | 19.9 | 19.6 | 9.7 | 166.6 | 5.11 | 16.3 | 7 | 104 | 44 | 1.21 | 14.8 |
| 254x114x37 | 37.2 | 254 | 114.3 | 7.6 | 12.8 | 12.4 | 6.1 | 199.3 | 4.46 | 26.2 | 6 | 60 | 28 | 0.899 | 24.2 |
| 203x152x52 | 52.3 | 203.2 | 152.4 | 8.9 | 16.5 | 15.5 | 7.6 | 133.2 | 4.62 | 15 | 6 | 78 | 36 | 0.932 | 17.8 |
| 152x127x37 | 37.3 | 152.4 | 127 | 10.4 | 13.2 | 13.5 | 6.6 | 94.3 | 4.81 | 9.07 | 7 | 66 | 30 | 0.737 | 19.8 |
| 127x114x29 | 29.3 | 127 | 114.3 | 10.2 | 11.5 | 9.9 | 4.8 | 79.5 | 4.97 | 7.79 | 7 | 60 | 24 | 0.646 | 22 |
| 127x114x27 | 26.9 | 127 | 114.3 | 7.4 | 11.4 | 9.9 | 5 | 79.5 | 5.01 | 10.7 | 6 | 60 | 24 | 0.65 | 24.2 |
| 127x76x16 | 16.5 | 127 | 76.2 | 5.6 | 9.6 | 9.4 | 4.6 | 86.5 | 3.97 | 15.4 | 5 | 42 | 22 | 0.512 | 31 |
| 114x114x27 | 27.1 | 114.3 | 114.3 | 9.5 | 10.7 | 14.2 | 3.2 | 60.8 | 5.34 | 6.4 | 7 | 60 | 28 | 0.618 | 22.8 |
| 102x102x23 | 23 | 101.6 | 101.6 | 9.5 | 10.3 | 11.1 | 3.2 | 55.2 | 4.93 | 5.81 | 7 | 54 | 24 | 0.549 | 23.9 |
| 102x44x7 | 7.5 | 101.6 | 44.5 | 4.3 | 6.1 | 6.9 | 3.3 | 74.6 | 3.65 | 17.3 | 4 | 28 | 14 | 0.35 | 46.6 |
| 89x89x19 | 19.5 | 88.9 | 88.9 | 9.5 | 9.9 | 11.1 | 3.2 | 44.2 | 4.49 | 4.65 | 7 | 46 | 24 | 0.476 | 24.4 |
| 76x76x15 | 15 | 76.2 | 80 | 8.9 | 8.4 | 9.4 | 4.6 | 38.1 | 4.76 | 4.28 | 6 | 42 | 20 | 0.419 | 27.9 |
| 76x76x13 | 12.8 | 76.2 | 76.2 | 5.1 | 8.4 | 9.4 | 4.6 | 38.1 | 4.54 | 7.47 | 5 | 42 | 20 | 0.411 | 32.1 |