Masonry Magazine February 1994 Page. 39
The chord member which is generally at the roof or floor line is achieved. The chord member contains the reinforcing steel that is part of the diaphragm and is completely around the perimeter of the roof or floor.
The above procedure will result in a partially grouted wall in which only cells that have reinforcing steel are grouted.
Can partially grouted walls be grouted by the high lift technique?
If it is desired to build the masonry walls and place the reinforcing steel all at one time and then grout from the top of the wall, this would be considered high lift grouting procedure.
For a high lift grouting procedure, clean-outs are required at the location of all vertical reinforcing steel. This is so that the mortar droppings at the bottom can be cleaned out prior to grouting. This will assure a bond between the grout and the concrete foundation.
For high lift grouting, it is imperative that high slump, 10" or 11" (254 mm or 279 mm) slump grout be used and that it is placed in a continuous operation so that when the cells are filled with grout, the grout will flow also horizontally into the bond beams and encapsulate the reinforcing steel. This will occur as high slump grout will easily flow 40" (1 m) or more horizontally. With reinforcing steel placed at 48" (1.2 m) on centers, the grout need only travel 24 (610 mm) or more inches each way to completely fill the bond beam unit. This is easily achieved with a 9" to 11" (229 mm to 279 mm) slump grout.
To facilitate the flow of grout horizontally, bond beam units may be placed so as to provide maximum opening for horizontal flow. This would be two bond beam units placed so that the openings are facing each other with expanded metal mesh placed on the tops and bottoms of the