SeanDean

Hello Gus, Cheers for your input its greatly appreciated. If I'm honest I just assumed the soleplate could be bolted down to the brick/blockwork but now saying that I can see how that's not a great idea as it will puncture the DPC. I will start researching ways to strap it down like you have pointed out and I have now provided some drawings and a description of the build in the post above.

Hi Russel, I'm happy to hear it's going in the right direction, cheers. The build is a two story extension that is 11m long x 4.6m wide, the front half of the ground floor is a garage area and the rear half is a workshop. The extension is 4 wall with half of one wall making use of the existing house (highlighted in yellow on the plan. To the front of the build is a tiled pitched roof and towards the rear is a flat green roof. There is a step down halfway making the garage half 300mm below the original DPC. It has 3m bi-folds to the front of the garage and 4m bi-folds at the side of the workshop, both have SHS columns bolted into the foundations with UB's so basically two goal post. Here is a basic plan of the build and render of the rear.

Hi @NewToAllOfThis Did you ever move forward with this build, if so it would be great to get some help from you? I need SHS and UB creating goal post over two separate bi-folds within my timber frame and although I have the structural engineers plans showing the SHS with base plates bolted into my foundations im unsure as to what to do with the DPC at this point. If you did go ahead with your build what did you do at this point regarding the SHS and DPC?

Hello Russell, Thank you for getting back to me. I was searching for a while and could not find what I was after then I realised I can search specific parts of the forum so found some threads that were super helpful. Based on what I have seen and read I have updated my shite plan with this one, am I going in the right direction?

Hello all, I'm after some help understanding if the following drawing is correct for a timber frame building to sit on. The building is a two-story extension and is to be clad with timber feathered edge, not a brick cavity wall. Any help would be greatly appreciated, Cheers.