ABSTRACT
For many supervisors, school days are long gone. Concrete and concrete technology, however, do make some demands in terms of figures and calcualation and trends are such that mathematics and statistics become essential tools. The modern calculator (scientific) and microcomputer find their place on many supervisors desks, although it is occasionally necessary to resort to first principles. With this in mind, this chapter revises the mathematics essential to the constructor. Examples of addition, subtraction, multiplication and division of whole numbers have been omitted, but fractions and decimals, met in concrete mix design as well as in mix proportioning for concrete and repair materials, provide an introduction to the topic.
