Bs 8666 Shape Codes Pdf Download
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BS8666 is the British Standard rebar shape code list required to be adhered to when using steel to reinforce concrete in construction in the United Kingdom and Northern Ireland. The latest update, BS8666:2020 (from BS8666:2005) updates the standard more closely inline with BS EN 1992-1-1 Eurocode 2 (which you can download for free here).
There are only a few noticeable differences between 8666:2005 and 8555:2020. In fact, most people will only recognize the two additional shape codes added to the standard. Actually there have been some small amendments to 20 other shape codes, some new reference data added, some changes to dimensioning of cranked bars and obtuse angles, and Table 1 has been updated to include dowel bars.
The length equations for shape codes 14, 15, 24, 25, 26, 27, 28, 29, 34, 35, 36, 46 and 56 are approximate and where the bend angle is greater than 45° or, for shape codes 14, 29 and 56 with an acute angle where the bend angle is close to 90° or exceeds 135°, the length should be calculated more accurately allowing for the difference between the specified overall dimensions and the true length measured along the central axis of the bar.
In January 2021, the British standard used to describe the scheduling, bending, and cutting of reinforcement bar was updated. The previous standard was BS8666:2005 and this forms the basis for the standard shape codes that ship with Revit. There are quite a few significant changes which affect how the total length of bars are calculated as well as some additional shape codes and updates to the bending schedule. Below you can see the new shapes added to the standard.
Here at Symetri we have created a full library of rebar shape families along with formulae that comply with the new updated standard. Additionally, we have added extra parameters to enable the scheduling of weights and control over shape codes. 2b1af7f3a8