Accession Number : ADA183861

Title :   New York Water Supply Infrastructure Study. Volume 3. The Bronx and Queens.

Descriptive Note : Final rept.,

Corporate Author : ARMY ENGINEER WATERWAYS EXPERIMENT STATION VICKSBURG MS ENVIRONMENTAL LAB

Personal Author(s) : Walski,Thomas M ; Wade,Roy

PDF Url : ADA183861

Report Date : Jul 1987

Pagination or Media Count : 78

Abstract : This report describes an evaluation of the water distribution system in the Bronx and Queens, with special emphasis on water main breaks. The report presents a statistical analysis of breaks by sizes, causes, and season, among other considerations. It also examines trends in break rate with age of pipe and determines that the pipes are deteriorating with time, although these effects are masked somewhat by different laying practices and pipe materials. Criteria for determining which pipes should be replaced are developed. These criteria are based on a number of factors, most important of which are break cost, replacement costs, rate of pipe deterioration, and interest rate. The actual break rates of potential pipe replacement projects are compared with the critical break rate to determine which pipes should be replaced. Listings of replacement projects, and their costs, are then presented.

Descriptors :   *WATER DISTRIBUTION, *WATER PIPES, *PIPELINES, NEW YORK CITY(NEW YORK), FRACTURE(MECHANICS), SEASONAL VARIATIONS, STATISTICAL ANALYSIS, COSTS, DETERIORATION, MATERIALS, PIPES, RATES, REPLACEMENT, RUPTURE, WATER, WATER SUPPLIES

Subject Categories : Civil Engineering

Distribution Statement : APPROVED FOR PUBLIC RELEASE