The American Concrete Institute's Field Reference Manual is a compilation of ACI 301-16 Specifications for Structural Concrete and additional ACI documents on measuring, mixing, transporting, and placing concrete, concrete pumping methods, hot- and cold-weather concreting, consolidation, and concrete formwork. ACI 301-16 requires that the contractor keep a copy of this manual in the field office of any project where ACI 301 is specified.