Design of Prestressed Concrete Pressure Pipe

Abstract

In 1942 the first prestressed concrete cylinder pipe was produced commercially. Production of prestressed concrete embedded cylinder pipe began some ten years later, fulfilling a demand for higher pressures and larger diameters. In the past two decades millions of feet of these two types of prestressed pipe have been installed, both in this country and abroad in sizes from 12 in. to 120 in. diameter. The Standards for these pipe are specified in AWWA C301. During this same period studies were made on the economy of producing a prestressed pipe with an all-concrete core; that is, without a steel cylinder. By 1952 a prototype had been developed and three successful projects, totaling 90,000 feet, had been installed in Latin America. From 1952 to the present, developmental efforts were directed toward improved manufacturing and design techniques to achieve maximum economy consistent with conservative design. In recent years several contracts have been obtained using this improved product. In the design of any structure the