The successful and economical use of concrete involves the selection
of suitable materials, the correct proportioning of mixtures in the
development of qualities to meet specific requirements, the proper
placing and the care of the green concrete.
A concrete of great strength is uneconomical if a weaker mixture will
serve and a cheap or weak concrete is costly if it does not fulfill all
requirements. The cost of concrete depends not only upon the price of the
materials and labor but also upon the judicious use of the two. Lack of
foresight in locating the mixing plant, in the design of forms, and in
planning the successive operations may cause unnecessary expense, while
neglect of any one of the precautions which should be observed is likely
to result in unsatisfactory work.
The bulletin discusses the requirements of good concrete and describes
the making and placing of plain concrete according to the best practice.
Washington, D. C.