MartinD

Good Morning, I have been trawling this forum and HSE and other websites but I am struggling to get any information on what the Principal Designer is supposed to put in the Health and Safety file that CDM requires them to complete. Is it a physical folder that is expected to be in the site office or is it just the design information from Architect, SE etc? What would it look like for a knock down and rebuild for a 4 bed timber framed house on two floors? We are about to start demolition and the F10 has been submitted etc. We are clear on who is fulfilling the roles and lots of advice on this site about this which is great and principla contractor for demolition and groundworks has a Construction Phase Plan etc. but I am just wondering if we are missing some thing for this Health and Safety file, the specific CDM text from regulation 12 is copy and pasted below. Thanks for any advice or just pointing me to a previous post that I haven't found. Construction phase plan and health and safety file .....(5) During the pre-construction phase, the principal designer must prepare a health and safety file appropriate to the characteristics of the project which must contain information relating to the project which is likely to be needed during any subsequent project to ensure the health and safety of any person.

Thanks Nick, fully aware of the option with MBC but they aren't doing our groundworks as their foundation designer's didn't think it suitable for their standard foundation and they wanted it piled, hence we wnet to a another specialist Passive House SE. I have now found a local UFH installer that is experienced installing the UFH pipes to rebar quickly and at a decent cost so I have this back as an option. cheers Martin

Thanks for the input very helpful. The SE is the one who says our clay is not great and others would not do a slab on our site as they didn't seem to understand that our timber frame house which is not brick clad is going to be a low mass building. It is the SE that would rather we don't have the UFH pipes in my slab which is my preference as we will have the insulation below and around the slab. For putting the UFH pipes into the slab, looking at this forum we can use pipes etc from Wunda and get them to design it (ASHP company I'll probably use also suggests them) but who attaches it to the rebar - my groundworkers haven't done it before (they do groundworks for Baufritz and the like regularly so know who to do this type of foundation) so will need a bit of guidance if they are asked to do it.

Hi all, I look at posts but realise I joined in 2019 and haven't posted since! we still have not demolished after Covid and planning delays and then looking at a refurb option. However we now have an MBC timber frame on order for a PH spec House. We have had complications on the foundation as I wasn't happy to do the norm in our area of a piled foundation and now have a specialist PH experienced structural engineering co. on the job as well as our PH architect. We have a insulated slab foundation design with a big thickened section around the perimeter and across the centre to better spread the loads as our clay is not great but as our structural engineer pointed out when they visited the new house is no heavier than the bungalow and that has not sign of any cracking after 60 years! Demolishing is imminent hopefully and need to get foundation design finished sorting out drains and other penetrations in it. One point we are discussing is whether UFH pipes in slab a good idea structurally (inducing stresses and possibly cracks) but looking at this website there seems plenty of supporters.

Hello all we have just purchased a Bungalow and plan to tear gown and rebuild. Council agree with this approach. Just starting to design it and thinking about all aspects especially on the energy efficiency front. look forward to using this Forum. Martin