Slab sawing, also known as flat sawing or pavement sawing, is primarily used to separate concrete or asphalt pavement for demolition and concrete removal purposes. There are many different types of saws such as the well known walk-behind self-propelled saw powered by gas, diesel or electric. These saws are generally belt-driven, from around 18 hp to over 100 hp. They are capable of cutting varying depths of concrete and usually operated by trained professionals in high production commercial applications. The walk-behind saws operate with a single handle that controls the forward, reverse, raise, and lower operations. This allows for one-handed operation to control the saw’s motion in and out of the cut. To turn the saw left and right for traveling and alignment, you lift the back of the saw off its rear wheels with its two handle bars and aim it in the direction you want to go. Some saws have a differential to allow pivoting on its rear axle by pushing down on the handle bars and lifting the front tires. With practice, a good operator can align the machine over a saw cut line in seconds. Most saws have other features such as depth gauges, depth stops, travel adjustments, and pointers to assist with accurate cutting. Used by professionals, these saws can cut many different applications to include all types of concrete removal inside of buildings or outside on pavement for parking lots, roadways, bridges, and runways.
Also available is the smaller, lower horsepower push saws ranging from 5 to 15 horsepower. These saws are easy enough to operate with some basic understanding of the principles in saw cutting, making it suitable for commercial and residential do-it-yourself individuals. Available for consumers in most rental stores, these saws are operated by manually pushing them forward and backward, aligning the blade to the cut the same way as the larger saws by lifting the back wheels with the handle bars and moving the rear of the saw left or right. To raise and lower the blade, you have a rotating handle that spins on a threaded rod, manually spinning it one way to go up and the other way to go down. Smaller and more maneuverable, these saws have played a role in effective saw cutting in confined areas such as back yards, pool decks, sidewalks and patios.
The blades used for slab sawing are manufactured by many different suppliers with different sizes and specifications. Each blade has a unique specification for material being cut versus the horsepower and size of the saw being used. A blade used on a small, low horsepower saw cannot be used cost effectively on a big, high horsepower saw; it will simply wear out too fast. Choosing the right blade specification with the right saw is very important for overall performance and cost. Getting with your local professional is always a good idea.
For over 25 years Diamond Drilling & Sawing LLC has successfully cut concrete on floors, foundations, highways, runways, bridges, and roadways. We saw cut cured concrete or green cut for crack control on newly poured slabs. We have the ability to cut and remove concrete for commercial and residential applications.