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Concrete screws come in 3/16- and 1/4-inch diameter, in lengths up to 3-3/4 inches. Both hex-head and Phillips-head styles are available. They can be used in poured concrete, concrete block, and brick.
Because they have more moving parts and need to be more durable, hammer drills tend to be more expensive than regular drills. Unless you know you will be drilling through tough material, a regular drill is usually just as effective at a significantly lower cost.
You can drill holes in concrete with a regular drill. … You will need a bit more patience and a wider array of drill bits when using a regular drill, but the procedure is the same for drilling in concrete regardless if you use a regular drill or a hammer drill.
In general, the larger the diameter of the anchor bolt, the more carrying power that it has and more massive a load it can bear. … So, a 1/2″ anchor set with a minimum embedment of 3.
Bolts shall be spaced not more than 6 feet (1829 mm) on center and there shall be not less than two bolts or anchor straps per piece with one bolt or anchor strap located not more than 12 inches (305 mm) or less than 4 inches (102 mm) from each end of each piece.