The most recent means of constructing reinforced masonry incorporates hollow block. These units are manufactured with large open cells which align vertically when the units are laid. Vertical reinforcement is placed in the cells by laying the block over or around the bars, or by threading the bar in after the blocks are laid. Horizontal reinforcement is placed in bed joints or in continuous bond beams made by removing portions of the webs that connect the face shells. Spaces containing reinforcement are grouted in lifts of up to 5 ft (1.5m) to make grout pours of up to 24 ft (7.3m). Repairs of non reinforced hollow block masonry is shown below.