Factor	Frequency of visualization of the factor at the worksite
Factor	Always	Often	Sometimes	Seldom	Never
Accurate estimate of the volume of concrete to be used	X
Use of specific design for masonry	X
Good accommodation of mortar in stock, no action of humidity	X
Use of older sacks before the most recent	X
Mortar not unloaded on the floor		X
No over-thickness of the horizontal joints of the masonry		X
No over width of the vertical joints of the masonry		X
Use of specific tools for settlement, such as tubes and boards	X
Transport of mortar by appropriate ways and/or equipment for such	X
Reutilization of mortar that falls on the floor		X
It is necessary to settle until the mortar is over	X
Encouragement of workers to minimize wastes	X
Good operation of the transport elements mortar	X