Damp proofing course is laid above the ground level adjoining plinth level of the building in the entire width of the wall. However it is kept below the floor
level. The thickness of the DPC (Damp Proof Course) varies between 12 mm to 20 mm. At certain places it may be 40 mm thick also. It is also provided below the sill level of the doors.When the brick work reaches plinth level a special type of mix known as Damp proofing compound is mixed with cement and sand
(1 : 2) with adequate amount of water and is laid in the full width of the brick work below it. The thickness of this layer is usually kept at 2.5 cm unless and until specified otherwise. This layer prevents the dampness to rise above.