Cavity wall/UBs

[23vc]

Hi
sorry if this is a stupid question, but I'm building a cavity wall (from ground level upwards) which will have another new cavity wall meeting it at 90degrees, starting at first floor height, built off a pair of UBs bolted together (inner and outer skin). I've got myself confused about how the outer skin crosses the cavity - as the UBs are bearing onto the inner skin, its like the outer skin needs supporting across the 100mm cavity? or do you just lay a brick across it?
This must crop up all the time on a typical 2 storey build so I guess it's a common thing but it's something I've never realised until now!
Cheers
John

 

[^woody^]

Yes you can bridge across the cavity, but you will need a DPC to stop moisture moving from the outer to the inner leaf and a cavity tray. Likewise for a thermal barrier.

 

[23vc]

So just bridge it with a brick? then a strip of DPC under that brick, and a cavity tray underneath? obviously the end will be seen externally on the facework so can't lintel it or anything

 

[^woody^]

The actual detail will depend on the specific arrangement that you have. The above is just the principle.

 

[23vc]

ok cheers Woody I'll speak to my BCO