Concrete mesh supports?

[Chippy]

We're concreting a pad for an anaerobic digester and it has to have 2 layers of mesh in it but I'm struggling to find a plastic thing like in the picture that will take 2 things of mesh. There's plenty that take 1. Anyone know of one?

 

[RWG Contracts]

Trictracks

That's double layered

Alternatively you get steel strips and make a ring out of them. Ask whoever is supplying your mesh they'll know what you need

 

[Greenasgrass]

http://uk.siggroup.com/media/1558/groundwork-civil-engineering-catalogue.pdf

Anything you need you'll find in here.

 

[Derky]

They are called biscuits. Single layer we use concrete ones. Double layers either plastic ones that have a slot in the side then the second on top or we use metal mesh supports,

 

[Chippy]

Gone for the "Hychair" off Williamsons. Got 2 different heights for the 2 different sheets of mesh. Looks stronger for walking on than plastic.

 

[Unbrako precast]

We have found ones like those in the top picture to be rubbish , they kept collapsing when we walked on them . may as well have used egg boxes !