DRILLING
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Core Drilling is a precise and efficient method used to create circular holes in concrete, masonry, or other hard materials using a diamond-tipped drill bit, where clean holes are required.
There are important distinctions between core drilling in horizontal (slabs) and vertical (walls) surfaces, as well as key differences between core drilling and hammer drilling—particularly when preparing holes for anchors.
Slabs vs. Walls Core drilling slabs (horizontal surfaces) is often easier because the drill is supported by gravity. This typically allows for faster penetration and greater stability. Managing water used for cooling and dust suppression is simpler, as it pools around the drilling area and can be easily controlled. Common applications include creating holes for plumbing pipes, electrical conduits, or post-tension cable access.
Core drilling walls (vertical surfaces) requires more careful setup to anchor the drill rig securely against vertical surfaces. Since the drill bit is working against gravity, more force and bracing is required. Water is more difficult to manage in this orientation. Typical uses include penetrations for ventilation ducts, cable trays, or through-wall utility access.
Core Drilling vs. Hammer Drilling for Anchors Core drilling creates clean, full-depth, round holes without cracking or damaging the surrounding concrete. It produces smooth walls ideal for large-diameter holes, embedded pipes, or structural testing. This method uses rotary cutting with a diamond bit, resulting in less vibration and stress on the structure.
Core drilling is not typically used for installing standard anchors but may be required for setting large or specialized anchors or embedded steel elements. Hammer drilling, on the other hand, is used primarily for installing mechanical or chemical anchors. It creates rougher walls due to the percussive action, which is better suited for anchor bonding or expansion. This method combines rotary motion with rapid hammering, making it efficient for small- to medium-diameter holes.
