The Fun Irish (House)

Why can’t you fit the kore in place , shuffle it until you are happy then fix 4x2 strip at corners screwed down to keep it in place. 
 

if the blocks are put in place first you are at the mercy of the bricklayer’s accuracy. 

We'll allow 10mm on each axis for wiggle room. The groundsworker want to tie in the DPM/Radon barrier onto the blocks. Definitely the reverse way I'd like things done but just need to make sure the block work is perfect on the internal measurements. I'll have a chat with them in an hour or so and see what they think...good suggestion though....

What's the need for a concrete sub-foundation? Clay soil?

"Made Ground" - found out at last minute. Poor down to 2.2 meters. The sub foundation is part of the system to avoid subsidence - using 89 groundscrews!! Now all covered you wouldn't know they were there at all!!