Xác định vị trí cần phá bê tông. Đánh dấu vị trí mảng bê tông mà bạn dự định phá bỏ. Đóng tất cả các hệ thống tiện ích liên quan. Cắt theo đường thẳng, càng sâu càng tốt. Phá bê tông gần chỗ được cắt. Đục sâu dần. Đục vào trong để làm rộng khe hở. Phá bê tông bằng búa tạ hay máy đục bê tông. Vệ sinh vách lỗ. Tìm đường ống bị hỏng (tùy trường hợp).

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If you are looking for a broken water or drain line and you can figure out its general location, you'll save a lot of effort and expense. Here are some things to look for:  For plumbing problems, try to determine the location and depth of the underground pipes. Look for an outdoor faucet, sewer cap, or use a line locator. For water problems, look for areas where water is either bubbling up through cracks in the concrete or seeping out around the edges of the slab. For electrical lines, you may find you have to locate the conduit outside the slab area and dig up a length of it to determine where it runs. For other types of repairs, look up the construction blueprints with your municipal government or request them from the contractor who built your home. You may wish to measure distances from the slab's edge to make an even, parallel hole for less visible repairs. Use a pencil or chalk to mark off the location. Since you don’t know what is under the concrete, allow for plenty of room around your repair area to avoid causing further damage. If you are digging toward a specific line or pipe, shut off the power or water before you begin. You don't want to risk electrocution, flooding, or a gas leak. Always call the utility company to find out the location of power lines and other dangerous items before beginning projects that involve digging. the line as deeply as possible. Rent a concrete cutoff or demolition saw. Cut the line evenly to create a clean edge when your work is complete. If you are searching for a broken water pipe, you may have to enlarge the hole after the initial break is done.  Be very cautious while sawing. These saws are powerful and can cause serious injury, property damage, or death if used incorrectly. Always wear a respirator or face mask to protect your lungs from cement dust and always follow the tool's user instructions carefully. Whenever possible, use a wet saw and a steady flow of water to prevent airborne dust and damage to the saw blade. Use a heavy duty hammer drill or a breaking...