LeanTwo Posted May 12, 2017 Share Posted May 12, 2017 Guessing that the answer to my question is "no", I'll ask it anyway! I wanted a quick reference to the regulations for the slit trench dimensions for foundations and couldn't find them on my local authority's website. A quick call to them resolved the situation but I wondered if there is a website or pdf list that might be available? Link to comment Share on other sites More sharing options...
A_L Posted May 12, 2017 Share Posted May 12, 2017 not exactly what you were looking for but falls into the 'old but good' category, see page 18 of attached pdf Small_Buildings_Structural_Guidance.pdf Link to comment Share on other sites More sharing options...
LeanTwo Posted May 12, 2017 Author Share Posted May 12, 2017 Hello, A_L and thanks for the reply and link. Looking through the document that you sent a link for, it looks like things have already changed. I was told by my local council building regs officer that my trench needed to be 900mm deep and 600mm wide, which is different from the figures in the 2010 document. In this link, the figures agree with the document you gave me a link to! http://webarchive.nationalarchives.gov.uk/20151113141044/http://www.planningportal.gov.uk/uploads/br/br_pdf_ad_a_2004.pdf Link to comment Share on other sites More sharing options...
PeterW Posted May 12, 2017 Share Posted May 12, 2017 Hi @LeanTwo - your local council BCO will have knowledge of the area you are in. It may be that you do need that (clay soil etc) or it is their view of how they have always done it. Only a structural engineer and soil test will tell you what is "actually" needed. If its a single storey around where I am (sandstone) then we get 450mm as the minimum. Width is based upon the wall thickness. Link to comment Share on other sites More sharing options...
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