DIY conservatory dwarf wall, cavity thickness?

[colbags]

Hello all,
I'm new to the site and new to constructing walls. I have a friend who is a brick layer and he'll need to know what type of wall to construct for my new conservatory. I'm having a dwarf wall style victorian conservatory.

How high should it be and how wide,including cavity thickness?
Which style of wall should be built?
Will I need wall ties?

I think it has to be 600m/m high.

I have already dug the footings 450*600m/m deep

hope to hear some good answers soon and thanks

 

[^woody^]

I have a friend who is a brick layer and he'll need to know what type of wall to construct for my new conservatory.

If that is the case, he is not a bricklayer then is he?

50mm cavity (with wall ties), or just build it solid 215mm