Next — pouring concrete.

The thickness of the slab foundation ranges from 25cm. and higher, so the blind area should be appropriate.

Next — pouring concrete. You need to pour at a time, t. e. completely fill the future plate with concrete without long breaks. Concrete is compacted by an industrial vibrator to exclude the formation of voids. The surface is leveled by the rule or a flat clay board. If you fulfill all the above conditions, the design will turn out to be reliable and monolithic.