Guide to Design and Construction of Circular Wire- and Strand-Wrapped Prestressed Concrete Structures

Description

The design and construction of circular prestressed concrete structures requires specialized engineering knowl-edge and experience. The recommendations herein reflect over 6 decades of experience in designing and constructing circular prestressed structures. When designed and built with understanding and care, these structures can be expected to serve for well over 50 years without requiring significant maintenance.

This guide provides recommendations for the design and construction of circular wire- and strand-wrapped prestressed concrete structures based on practices used in successful projects.

Baffle walls and inner storage walls are frequently constructed inside water storage tanks. Baffle walls are used to increase the chlorine retention time of water as it circu-lates from the tank inlet to the outlet. The configuration and layout of baffle walls vary depending on the tank geometry, flow characteristics, and the desired effectiveness of the chlorination process. The most common baffle wall config-urations are straight, C-shaped, or a combination of the two. Baffle walls can be precast or cast-in-place concrete, masonry block, redwood, shotcrete, metal, or fabric.

Inner storage walls are separate storage cells normally used to provide flexibility in a system’s water storage capa-bilities and hydraulics. Inner walls are typically constructed the same as the outer tank walls and are designed for external and internal hydrostatic pressure