With the help of a shortened plastic bucket, which is bent in the form of the future toilet lid, and with a plastic tube and two metal tubes that have the thickness of the future ventilation tube and the two dowels that serve for fixing the toilet lid, one can spare out the concrete at the correct places of the toilet cover plat while hardening. The four armouring steal tubes in every corner of the toilet cover plate will be pushed on the other side of the toilet cover plate after hardening where they will be again fixed with a little bit of concrete. When doing the construction on a sandy ground, one can just push these four armouring steal tubes in the sand the correct place in the form before filling in the concrete in.) They will serve for placing the cover plate exactly between the four walls of the toilet "box". Behind the tube for the future ventilation tube, a handle is placed, to make it easy to lift the toilet cover plat from the toilet "box", once the EcoSan ARA toilet is placed on the top of the pit latrine and should be taken away again for emptying the pit.