Concrete Cover

What is this? Generally, the builder calls it a tofu or knuckle, but for us, a technician, it's called a concrete protective layer. Most of the concrete protective layer is determined by the use of different units and where the area or the location of the unit is located. The following is the size of the use of the protective layer of each unit:

1. Base foundation with protective layer from 50-75 mm
2- Ring beam has a protective layer from 40-50 mm
The pillar has a protective layer of 40 mm
4-Wall with 25-30 mm shade
5. The rug has a protective layer from 20-30 mm
6- Stairs have a protective layer from 15-30 mm