To Cut a Concrete Wall Vertically, you have to draw a vertical cut line on the wall in the location where you want to cut it. To ensure the vertical line is straight, you need to drop a chalk line tool from the top of the wall and push it against the wall at the bottom. You must Place a level beside the string to make sure it is level and snap the chalk line against the concrete. After that, protect the surrounding area if the concrete wall is in or near a living area. You should hang sheets of plastic up over all doors and other openings using painter’s tape.
If the concrete wall is outdoors, you can skip this step. Then, Don heavy work gloves, a dust mask, ear plugs and protective eye wear. You have to Install a masonry saw blade into a circular saw and plug the saw into an electrical outlet. Next, Place the saw at the top of the concrete wall with using a stepladder if required. You need to Squeeze the trigger and push the blade into the chalk line by 1/4 to 1/2 inch.
You must pull the saw blade slowly down the wall until you reach the bottom. Forth, Screw the hose of a compressor to the air line valve on a concrete chain saw. You should set the pressure on the compressor to a minimum of twenty pounds per square inch or psi. You can attach a garden hose to the water inlet valve located just above or below the air valve and turn the hose on. After that, Start the concrete chain saw and push the tip against a portion of the chalk line and not at the top of the wall.
You have to begin the cut in the center of the wall to create a straighter line. You need to push the saw tip in until it penetrates the wall. Then, Pull it gently all the way down until you reach the floor or the end of the desired cut line. You must Pull the saw out and release the trigger. Last, Place the top of the saw back at the starting location and squeeze the trigger when moving the blade upward to cut through the remaining top portion of the wall.