Rear extension Under PD

[LemonSqueezy]

(probably putting in steels (to be decided))

Id think most certainly be putting in steels but in all seriousness you will also be needing a steel over that bi-fold door - has that been discussed?

I only ask because im currently designing a steel (UB + 10mm welded plate to base) for my bi fold 5000mm opening and im quite surprised by the size of steel required to resist lateral torsional buckling.

 

[essex123456]

Id think most certainly be putting in steels but in all seriousness you will also be needing a steel over that bi-fold door - has that been discussed?

I only ask because im currently designing a steel (UB + 10mm welded plate to base) for my bi fold 5000mm opening and im quite surprised by the size of steel required to resist lateral torsional buckling.

Yes I meant we have not actually fully decided if taking the walls out is what we want.

 

[LemonSqueezy]

Sure, but there will be a steel going over the bi fold doors right?

and not taking the doors out exempts from building control too?

 

[essex123456]

No idea I'll ask the designer

 

[DevilDamo]

and not taking the doors out exempts from building control too?

Only if going down the route of a ‘conservatory’.

 

[LemonSqueezy]

Yes and only then if the other exemptions are met. I was just wondering - there could be a fair cost saving if the architect is charging for BC approval time / works that are not required.

 

[tony1851]

@LemonSqueezy

 

[LemonSqueezy]

Thanks Tony - Im getting the same moment in my calcs so good to know we're on the same lines.
I think id rather see a box section there though so im going to run through that check too. Very much appreciate the effort - thanks!.