Cutting Cement Slab

Cutting hollow concrete block first score the line.

Cutting cement slab.

Slicing through slabs thicker than six inches is best left to a pro but anything less than six inches a depth that would include most concrete walls patios and sidewalks can be cut by a. It is recommended to start saw cuts on or at the center of column lines. Cut pavers the old fashioned way. If your cut doesn t need to be exact use a cold chisel and hand sledge to cut the concrete.

Score the length of the cut three or four times with the chisel. A circular saw with a masonry blade can also be used to either score or completely cut through the block. These joints should be cut in a quarter of the depth of the concrete slab during the very beginning of the curing process within 24 hours of the initial pour. To cut concrete with a 15 amp circular saw start by using chalk to mark cut lines on the surface of the slab.

Cutting depth your local building authority might have a regulation controlling joint depth but if not a standard rule of thumb is to cut to a depth that is at least one quarter of the slab s thickness. However it does require some elbow grease and a sensible pair of safety glasses. Joints shall be spaced at 24 to 36 times the slab thickness but this need to be confirmed by a structural engineer. During new construction the builder installs drain lines and stubs that will connect to future plumbing fixtures before he pours the slab on grade.

Next set the saw s blade depth to 2 inches and attach a 7 inch diamond blade using vice grips so that the teeth point in the opposite direction of movement. How to cut a concrete floor for new plumbing. Before you start saw cutting concrete is important to select where these cuts will be done. Do pond cure concrete slabs.

Where to saw cut concrete.