scope:

Background.

A composite elevated water tank is composed of a welded steel tank for watertight containment, a single pedestal concrete support structure, a foundation, and accessories.

The AWWA Standards Committee on Composite Elevated Tanks was formed to prepare a standard for the design, construction, inspection, and testing of composite elevated tanks. ACI 371R, Guide for the Analysis, Design, and Construction of Elevated Concrete and Composite Steel-Concrete Water Storage Tanks,† and ANSI/AWWA D100, Welded Carbon Steel Tanks for Water Storage, are used as source documents.

Work covered by this standard is usually procured under a design-build contract. It is intended that ANSI/AWWA D107 be used as a reference standard in project documents prepared by purchasers and engineers specifying composite elevated water tanks.