Dear Ms. Galvan: This is in response to your email correspondence dated June 15, 2005, to the Occupational Safety and Health Administration (OSHA). Groove or score the paver along the cut line before you begin to cut to help prevent it from breaking unevenly. GoYonder Tile Blade Thin Diamond Saw Blades for Cutting Stone Brick, Granite, Concrete 9.7 9.2 ... 2x 180mm Diamond Turbo Dry Wet Circular Saw Disc Cutting Blades for Concrete 8.1 7.6 Another problem associated with cutting these materials is that the dust can be a serious health hazard, as these materials typically contain silica. Position the Paver. By Jennifer Stimpson No matter what pattern you follow when installing a walkway or patio, you'll have to cut some bricks. deep with the included diamond blade that spins up to 5000 RPM courtesy of a generous 15 Amp high-torque motor. Mark the cut and clamp the stone or paver to a stable work surface. Cutting concrete blocks is a daunting task because of the materials that were put together to make the block. Corded Portable Concrete Saw No liquid fuels or lubricants are needed No liquid fuels or lubricants are needed for this 12 in. Disc Cutter to saw through brick, stone, pavers, block, ceramics, even concrete with rebar, drywall and other masonry. Saw … A circular or curved-paver patio or walkway requires precise cutting of the angular pavers to match the desired shape. Her published articles have appeared in various print and online publications. Before you begin cutting, get … One of the advantages of using a wet saw is that it reduces the heat build-up and the chances of the blade sections breaking off by cooling the blade with water.1 This letter constitutes OSHA's interpretation of the requirements discussed. A wide variety of cutting bricks circular saw options are available to you, such as saw type, application, and applicable industries. This blade is ideal for brick and other masonry materials. One of the problems associated with the use of a masonry saw is that, when used to cut brick, concrete block and masonry, heat build-up and stress can cause portions of the blade to break off and be thrown at a high rate of speed. These hazards are covered under 29 CFR 1926.55, which states, in part: Silica is listed in the "Threshold Limit Values" table in §1926.55 (Appendix A). Circular Saw Ceramic Brick Cutting Blades are available in a range of diameter, bore and teeth sizes. To comply with this requirement, administrative or engineering controls must first be implemented whenever feasible. *More efficient, fast and stable in cutting *Dry or wet cutting, hot-pressed sintered provide long working life. General Purpose - GP Segmented Diamond Blades For use with Angle Grinders, Brick Saws, Circular Saws, Concrete Saws and Radial Arm Saws. We have paraphrased your question as follows: Although a diamond blade or masonry blade on a circular saw can cut through pavers more quickly, it's difficult to get accurate curves with these tools without shattering the paver. Exposure to silica dust can lead to silicosis, an irreversible lung disease, and lung cancer. In this video I will show how to cut a paver block with a circular saw. It must fit the arbor or shaft on your saw. Back the saw out after about 30 seconds to avoid overheating. This is in response to your email correspondence dated June 15, 2005, to the Occupational Safety and Health Administration (OSHA). However, debris blow-back is significant. The exposure to crystalline silica must not exceed the assigned protection factor of the respirator. Whether it is mandatory to use a wet saw when cutting brick or concrete block. Our interpretation letters explain these requirements and how they apply to particular circumstances, but they cannot create additional employer obligations. Adjust the circular saw to cut a 1/4-inch depth. July 20, 2006 Maria Galvan [by e-mail] Re: Whether it is mandatory to use a wet saw when cutting brick or concrete block. 15 Amp 12 in. [ back to text ], 2For more information on silica, a detailed list of recommendations, and a description of OSHA's Special Emphasis program on silica, go to: http://www.osha.gov/dsg/etools/silica/spec_emph_prog/spec_emph_prog.html. An angle grinder with a masonry wheel also will cut through both the brick and the mortar and allows for tighter angles. The circular saw has to be hands down one of the most aggressive power cutting tools ever made. Specialty saws are made just for cutting brick and concrete. Use the DEWALT 7 in. Sincerely, The type of blade you need to get is a diamond blade. This standard does not specifically state that a wet saw must be used, but the use of a wet saw for cutting brick, concrete block and masonry is a means of meeting the engineering control requirement in §1926.55(a) with respect to silica dust.2 Concrete and Brick Diamond Circular Saw Blade for dry and wet cutting. Some studies have shown that wet cutting methods can reduce average respirable dust levels by up to 94 percent. When attached with the correct blade, the saw is capable of cutting just about any material from steel to concrete. Section 1926.702(i) (2) addresses this hazard by requiring "a method for retaining blade fragments" in the mandated enclosure. Set the saw blade to cut ½-inch deep, and position the paver on a flat surface, such as the ground or a sturdy board set on top a couple of sawhorses. Circular saw blades for metal, like metal-cutting chop saws (also called abrasive saws or cutoff saws), take 14-inch silicon carbide or aluminum oxide abrasive blades. Harrington's specialties include small business information, crafting, decorating and gardening. 10 in. [by e-mail] Cutting hollow concrete block—first, score the line. It states: These requirements address certain safety hazards associated with the use of masonry saws. Whirlwind USA LSS 14 Inch Diamond Saw Blade,Dry or Wet Cutting Concrete Saw Blades for Sharp Cutting Concrete Stone Brick Masonry,Broadened Cutter Head 4.5 out of 5 stars 568 $35.99 $ 35 . Smooth and precise cuts are always required in any kind of project, and the best way to cut concrete blocks is to use a wet cutting concrete block saw, also known as a masonry saw. A brick set or masonry chisel and mallet works best for cutting curved pavers. Maria Galvan They are essentially small table saws with a guide for straight cutting. Dear Ms. Galvan: Evolution DISCCUT1 is a powerful electric concrete cutter. Jenny Harrington has been a freelance writer since 2006. 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