It's based on what I did for a 6m*6m slab. The hardest part was levelling the concrete. The delivery driver took one look at me and the wife and recommend adding a bit more water to make it easier for us before unloading the first bit into my rented dumper. It was physically hard work raking it into corners and then rubbing a beam back and forth across the top of the shuttering while trying to scrape it flat.
Got my pinko rails on all around both roof sides (& my rotter sandwich went great/ pinkos under lip L & R/ solid).. & both PIR's on.. & 1 osb on too, on the easy side. Flat out all day to do this.
Looking murky overhead tho so tarped it.. dammit. Not easy on the stream-side: its 2-stage ladder max extended, & sitting on osb roof is pretty slidy! jeepers almost slid off into the rocky piddle.
One last step I'd like to do as a belt & braces peace-of-mind addition, is fix a metal (ideally) vertical rail on the outside L & R, twds front near the LIFT-OFF roof bit, to tie all the logs to down to the base (& up to the roof too if I could as its only nailed to the joists, & the joists are only gravity-set in too). Any ideas?
If he used beco He must be a saint.
Imho it’s probably one of the worst icf products available.
Has been around for years and has not moved forward.
Im using NUDURA
do a lot of looking around locally you might be surprised how many builds are around, there are 3 icf builds within 15mins of me and a good few more within an hours drive.