Building control drawings

[nwnw]

I'm doing all the building control drawings myself, mostly in Sketchup.  These will be backed up by 'mark-up' details and structural report by the structural engineer.

I have a couple of examples of building control drawings to reference, but I could really do with more.

 

Is anyone willing to share their drawings with me?  Especially those covering a timber frame extension!

 

Once nearly done (about 75% there just now) and once complete I'll stick my drawings up here for you all to rip apart! 🙂

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Edit: I meant to say, if you'd rather not put up in public then feel free to DM me.  Thx

Edited Friday at 14:07 by nwnw

[ETC]

Post your drawings and I will have a look.

[Gus Potter]

10 hours ago, nwnw said:

Is anyone willing to share their drawings with me?

No, because I feel if you want to save money then you need to put in the leg work first, there is no free lunch. 

 

Your starting point is to learn how you put together a timber frame, how the lateral stability system works and so on.

 

If you make a good go at your TFand post your drawings  then I may chip in as an SE / designer  to give you some tips etc.. but I'm not going to share my intellectual property with you until I'm sure you have done the leg work.

 

 

 

[nwnw]

Ok, fair enough.  Not complete and meeting with structural engineer tomorrow, but here we go...attached are some of the drawings as they stand.

I'm based in North East Scotland so Scottish Building Standards apply.

I'll post some images too for reference.

Existing sunroom...

New structure...

If anyone wants to see any specific areas then just ask.

Oh, and please not that the steel has been reduced in size slightly so the flat roof timber looks like it's floating 50mm above it.  I'm not updating the structure yet as engineer might change things anyway.

 

All comments welcome!!

 

Detail01-Wall - Rev3.pdf Detail02 - Roof - Rev1.pdf Elevations - Proposed - Rev1.pdf Layout - Proposed - Rev2.pdf

[nwnw]

New open plan space, utility to right and cloakroom/entrance top left.

[nwnw]

On 08/11/2025 at 00:27, Gus Potter said:

No, because I feel if you want to save money then you need to put in the leg work first, there is no free lunch. 

 

Your starting point is to learn how you put together a timber frame, how the lateral stability system works and so on.

 

If you make a good go at your TFand post your drawings  then I may chip in as an SE / designer  to give you some tips etc.. but I'm not going to share my intellectual property with you until I'm sure you have done the leg work.

@Gus Potter Hopefully you can see that I have 'done the legwork'.  🙂  

For me it's as much about having ownership as saving money.  I'm an engineer to trade so I have a good handle on loads & forces and can do all the calculations (although I'm engaging a structural eng to make the approvals process smoother).  But with regards the drawings, I want to make sure I get all the info on there that the BCO will be expecting.

 

[Mr Punter]

A few small points:

 

Maybe look at a fire resistant membrane on the walls.

 

The box gutter may fail at some stage and possibly rot out the walls.

 

The Kingspan phenolic insulation is good (better insulation and fire rating) but expensive.

[nwnw]

On 10/11/2025 at 10:06, Mr Punter said:

A few small points:

 

Maybe look at a fire resistant membrane on the walls.

 

The box gutter may fail at some stage and possibly rot out the walls.

 

The Kingspan phenolic insulation is good (better insulation and fire rating) but expensive.

Thanks for the feedback.

Any suggestions for membrane and I can have a look?

I'd like, if possible, not to have ugly guttering round the front of the cladding.  Any other ways round this?  My assumption was that EPDM would be pretty bomb-proof if done by a professional outfit, given the amount of flat-roofs done like this.

[markc]

Gutter on outside of the envelope and then cladding in front with access to downpipes if needed (removable cladding section etc).

haven’t read rest of post/s so might be barking up the wrong tree

Edited 9 hours ago by markc