Blocks are set on a leveling bed to start the initial coursing. ‘O’ Block is used for steel and grout reinforcement around doors, windows, corners and as specified in the field. AAC can be cut with a carbide hand saw, diamond blade circular saw or AAC band saw. Block is glued together with thin-set mortar using a notch trowel. AAC is easily to drill for cores and lends itself to be worked  into a multitude of shapes and designs. ‘U’ Block can be cut to become ‘H’ Block when doubling a lintel or bond beam course. A minimum amount of concrete is required, compared to other block systems, for grouting cores and bond beams.