Ohio Concrete’s first job was a simple core hole in a wall over 40 years ago. Prior to the invention of the barrel style core bit, field guys, usually an apprentice would us a star bit and hammer and primitively “jackhammer” a hole.

Core drill bits are available in diameters from ½" up to 60". (Ohio Concrete has drilled holes up to 120' deep), for plumbing, duct work, structural, and electrical installations. Material such as concrete block, concrete, asphalt, brick, and steel can all be core-drilled.

Concrete core drilling is used for creating circular openings for plumbing, as well as for structural and electrical installations.

Core drilling is typically completed using a wet process. If water is an issue, smaller holes can be completed using dry coring. If a special angle is required, core rigs can be configured to accurately achieve desired openings. Extreme depths can also be achieved.

Concrete core drilling is designed to remove the perimeter of the hole, an annulus of material rather than an entire cylinder of the material being drilled. The material left inside the drill bit is referred to as the core or the slug.

Concrete line drilling is an effective method for removing any thickness of concrete when other methods cannot be applied. This method has been used less frequently by the invention of other cutting tools such as the wire saw and the diamond chain saw. Core holes are drilled in a series of overlapping holes around the perimeter of the desired area to be removed. This only becomes necessary if the concrete is too thick or if space restrictions don't allow the other specialty tools. This process leaves scallops in the opening. This may or may be acceptable for the construction process. The opening perimeter can be formed and poured back to make a clean opening.