Building control plans - what level of details to expect

[oldkettle]

Hi, 

 

I am about to commission an architectural technician to produce a set of BC drawings for our outbuilding. The insulated raft has been designed already by SE, the building is just a rectangle and ICF is planned for the walls. The only areas that require attention are waterproofing as we are building into a slope and the roof where we need to work from the allowed ridge height down to establish the possible roof and wall height. What I want to understand is :

 

1. is it in scope for AT to establish at least approximately the potential roof structure, i.e. the whether it is going to be 8 by 2 or whether the steel will be required etc. 

2. Is showing the detail for connecting roof insulation with ICF insulation in scope? 

3. Waterproofing (no mortgage required)? 

 

The reason I am asking is I have the feeling AT has some standard details and items 2-3 are an extra on the standard package (according to him) which is a bit odd to me. While the whole cost is still reasonable I don't want to pay for something that is not adopted for our specific case and just mindlessly copied from somewhere. 

 

Any opinions? 

 

Thanks in advance. 

 

Edit: I think I put it in the wrong forum, probably better moved to Building Control? 

Edited September 10, 2022 by oldkettle

[Kelvin]

I can’t answer your specific question but there is a lot of mindless copying of regulation text in reports you pay for in my experience. Clearly things need to be designed correctly! 

Edited September 10, 2022 by Kelvin

[ETC]

25 minutes ago, oldkettle said:

Hi, 

 

I am about to commission an architectural technician to produce a set of BC drawings for our outbuilding. The insulated raft has been designed already by SE, the building is just a rectangle and ICF is planned for the walls. The only areas that require attention are waterproofing as we are building into a slope and the roof where we need to work from the allowed ridge height down to establish the possible roof and wall height. What I want to understand is :

 

1. is it in scope for AT to establish at least approximately the potential roof structure, i.e. the whether it is going to be 8 by 2 or whether the steel will be required etc. Yes.

2. Is showing the detail for connecting roof insulation with ICF insulation in scope? Yes.

3. Waterproofing (no mortgage required)? Yes.

 

The reason I am asking is I have the feeling AT has some standard details and items 2-3 are an extra on the standard package (according to him) which is a bit odd to me. While the whole cost is still reasonable I don't want to pay for something that is not adopted for our specific case and just mindlessly copied from somewhere. 

 

Any opinions? 

 

Thanks in advance. 

 

Edit: I think I put it in the wrong forum, probably better moved to Building Control? 

 

[oldkettle]

@ETC

 

Thank you 

Based on your reply, does it mean that all 3 would normally be included in the standard package rather than be "add-ons"? 

[ETC]

Yes. Only extras should be SE, M&E and QS. If he can’t do it go to someone who can.

[nod]

What ever preparation you decide on 

BC will have there own ideas of how they want things to be done If your using local authority He or she will be happy to run through what is required 

Most of the time The Architecht will paste and copy there submission 

Without any thought to the  specific project 

Ours has submitted building regs with a steel ridge in the attic trusses 

Cranked steels When they are straight bolted Gas boiler No gas 

I think BC realise this 

[ETC]

1 hour ago, nod said:

What ever preparation you decide on 

BC will have there own ideas of how they want things to be done If your using local authority He or she will be happy to run through what is required 

Most of the time The Architecht will paste and copy there submission 

Without any thought to the  specific project 

Ours has submitted building regs with a steel ridge in the attic trusses 

Cranked steels When they are straight bolted Gas boiler No gas 

I think BC realise this 

Lazy. Shocking. Disappointing.

[oldkettle]

1 hour ago, ETC said:

Yes. Only extras should be SE, M&E and QS. If he can’t do it go to someone who can.

 

Any recommendations? 🙂

 

Seriously, looking for an AT specialising in ICF has been a disappointing experience. This contact was passed by the supplier. 

I have realised for example that it is not clear to me at all whether a warm roof can work with ICF - couldn't find a relevant detail. With TF standard MBC detail with cellulose in walls connecting with cellulose in the roof looks natural although is probably not a warm roof construction.