The Pavement Core Drilling Machine. Diesel engine powered road building drill has been designed specifically for the purpose of drilling test cores from or holes in, Roads, Airport Runways, Bridges etc. The Machine comprises of two vertical support columns, which carry the Drill head/Engine assembly with the help of screwed spindle. The 5 HP diesel engine with pulley mechanism works with minimum vibrations. The double precision bit advances with screwed spindle, which provides a constant, accurate drill pressure, minimum core chipping & long bit life. The complete assembly is supplied on a rigid metal base with leveling facility and is suitable for vertically down coring applications only.