Feb 06, 2021 8:46 pm
I'm building a shed; 10 x 5 metres on a farm. It consists of.
● 10 piers 600 x 750
● Perimeter beams 300x450
● 1 Internal beam 300x450
The piers start at the bottom of the beam. I have done all excavations. Soil H2.
My questions relate to vapour barriers.
1/ If I pour the piers first and drill/glue tie bars into the piers (instead of cages which seem overkill) to tie into the beam how do I ensure vapour barrier is good?
2/ If I pour piers/beams/slab together how do install vapour barrier? Cut piers out and don't worry about plastic?
3/ How crucial is the vapour barrier and will water get through around reo tie bars joining pier/beam connection?
4/ If I pour all at once can I just cut out the piers and not even worry about vapour barrier? Will table water travel up though pier/footing/slab??
Any advice from experienced concreters appreciated.
Re: Concrete Slab Shed2
Feb 10, 2021 10:01 pm
Hi being a self standing slab we would pour the piers first, all the engineering I’ve ever gone off don’t ask to tie the cages or steel to the piers this is just to support the compressive load and doesn’t need to be tied in, you would place the moisture barrier (plastic) under your bar chairs prior to installing steel mesh,
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