So that the strip foundation is well taken, it is necessary to install formwork and additional reinforcement. The formwork is done to get the shape of the casting, protruding above the surface of the trench. Decking can be used to prevent trench walls from falling, strengthening them.
You can use your own (homemade or ready) or rent it. From the point of view of economy, it will be correct to make it with your own hands from any scrap materials available on any construction site – plywood, boards or metal tiles. To fasten the formwork panels, you can use screws or nails. The rule should be followed: the heads of the screws or nails should be located inside the formwork. This will help make the walls of the foundation structure as smooth as possible.
The formwork is installed before pouring so that its upper edge protrudes at least thirty centimeters above the surface of the trench. (more…)