How can you tell if you are getting the amount of concrete you are paying for?

The real indicator is the yield , or the actual volume produced based on the actual batch quantities of cement , water and aggregates . The unit weight test can be used to determine the yiled od asample of the ready mixed concrete as delivered . Its a simple calculation that rewuires the unit weifht of all materials batched . The total weight information may be shown on the delivery ticket or it can be provided by the producer . Many concrete producers actually overs yield by about 1/2 percent to make sure they aren;t short;changing their customers . But other producers may not even realize that a mux desgned for one cubic yard might only produce 26.5 cubic feet or 98 percent of what they designed .