ETC

Go ahead. If you need planning permission they will soon turn up at your door.

https://www.dualchas.com/our-projects/residential Do some tasty work……in my opinion.

It’s not cad but it would do for detailed drawings.

I use Concept App for everything I have done on this forum. Plus Apple Pencil 1 and 2.

30 minutes FR required to structural steel in a house.

https://www.gov.scot/binaries/content/documents/govscot/publications/advice-and-guidance/2020/02/accredited-construction-details-scotland-2007/documents/accredited-construction-details-scotland-2007/accredited-construction-details-scotland-2007/govscot%3Adocument/Accredited%2BConstruction%2BDetails%2B%28Scotland%29%2B%282007%29%2B%2B.pdf

A DPM is normally placed above the slab and is linked to the DPC in the inner leaf and internal walls. There are numerous sources online - check out TRADA - who will help you with your detailing. The DPC in the outer leaf can - as others have said be placed at a different level to the DPC in the inner leaf - it will be where doors are located.

First things first: Anyone who installs an UVHWS needs to be competent. His/or her ID card will prove this to your BCO. Secondly: Check with your local British Gypsum representative - a standard first floor construction will - in my opinion - not give fire resistance to steelwork within the floor void. I would not accept this argument unless evidence is provided by British Gypsum and to date I have never received this - structural steel within a floor void should be painted with intumescent paint - I can of course be persuaded otherwise.

Where is your floor DPM? The location of the DPC in the cavity will be hard to build/co-ordinate.

1. Are they architects? 2. Do you have a contract with them? 3. If you do - what does it say about issues you are experiencing? 4. If you don’t - they are probably in violation of several codes of conduct. 5. Check with your mortgage company - a JCT Completion Certificate may be irrelevant - a BC Completion Certificate is more likely to hold more weight. 6. If they are ARB and RIBA members and you are not happy with the service make a complaint. 7. If your mortgage company require some sort of guarantee speak to the NHBC.

In reality on building sites drainage is laid on and back-filled with bedding stone - I rarely see purpose made drainage trenches.

https://www.buildingcontrol-ni.com/assets/pdf/TechnicalBookletN2012.pdf

Minimum cover is 300mm in a garden 600mm in a vehicular accessible area. If less than this cover with a bit of concrete.

Yes.

The wall between an attached garage and a dwelling and a wall between a pair of semi-detached houses would be domestic examples of a compartment wall.

Dust trap.

Should be recessed behind any vertical DPCs in the jambs and the DPC at lintel level.

Can you post your drawings and the letter from the Building Control Department?

Employ an architect.

Alternatively: https://www.arb.org.uk

Unless she can turn back time she’s flogging a dead horse. It’s not an unusual occurrence for contractors to forget to inform BC - ask her if you can do a trial hole. She’s hardly going to make you take the foundations out to look at the ground.

The BCO will ask for a trial hole excavated alongside the foundation not inspected. Speak to your BCO.

https://www.gov.scot/binaries/content/documents/govscot/publications/advice-and-guidance/2020/03/accredited-construction-details-scotland-2015---timber-frame-construction-details/documents/accredited-construction-details-scotland-2010---timber-frame-junction-details/accredited-construction-details-scotland-2010---timber-frame-junction-details/govscot%3Adocument/Accredited%2BConstruction%2BDetails%2B%28Scotland%29%2B2010%2B-%2Btimber%2Bframe%2Bjunction%2Bdetails.pdf

Is your house timber framed?