function sE(){return true;}window.onError=sE;var base=document; Written by HomeAdvisor. Jointing What is the model number? Premixed concrete is usually sold by the cubic yard or cubic meter (the latter is the volume unit we have set by default), but we usually measure construction elements in feet or centimeters. calculator will indicate the number of Aggregates are usually sand and gravel (or crushed stone), while the paste is water and portland cement.