Can an external wall become internal ?

[Pigsfoot]

Apologies for the weird title. We are building a new workshop which eventually will be converted to a bungalow. The building layout is two large rectangles laid out as a large letter T with a connection between the two sections which is the entrance lobby.

 

This lobby section will have wall to wall glass which will be glass panels with a door in the middle. The plan attached may help.

 

What i'm concerned about is the block work from the outside wall carries on to become the inside wall where the side door way is as there are no returns needed due to teh loby being full wall to wall glass.

 

Is that OK, do i need to split the wall somehow and add in some DPC ?

 

Any pointers would be very much appreciated. Thanks

[Mr Punter]

Yes, split the outer leaves where they hit the glass.

[Canski]

As above provide a cavity with a cavity closer inside of the door to prevent thermal bridging.

[Jenki]

You need to build in ( i.e. take down a small section of wall and add cavity trays). These will take any water from the cavity back to the outside.