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A survey by Water Research Foundation (WRF) stated that only 0.18% of reported water mains were HDPE as compared to 18% and 16% for PVC and ductile iron (DI) pipes respectively (Ong et al. 2008). Rahman (2004) reported data for pipe materials used for the North American municipal applications. The use of HDPE pipe for potable water applications was 3% of the reported 310 million ft, while the use of HDPE for sanitary sewer applications was 11% of the reported 290 million ft. In 2007, Rahman increased the HDPE water market share for 15- to 36-in. diameters to 5% (Rahman 2007). Figure 1.3 illustrates that in 2003, the overall HDPE use in municipal applications was 6.9% of reported 600 million ft of pipeline while the use of DI and PVC pipes were 30% and 67.4% respectively. Between 2003 and 2014, the HDPE pipe shipments for diameters between 4 in. to 63 in. for potable water market have increased from 78 million pounds to 292 million pounds, approximately have tripled, based on PPI Statistical Reports 2004 – 2014 (latest data for 2015 to be published). 100% 80% 60% 40% 20% 0% Potable Water Sanitary Sewer Clay Concrete Pipe Materials DI PE PVC Source: Adapted from Rahman 2004. Figure 1.3 North American municipal applications piping material market In other parts of the world, HDPE is the major pipe material and its use is increasing. According to Business Wire (2014), “The global demand for HDPE increased from 15.5 million tons in 2000 to 23.1 million tons in 2009. This demand grew at a Compounded Annual Growth Rate (CAGR)4 of 4.5% during this period. In the forecasted period from 2009-2020, the demand is expected to grow at a CAGR of 7.3%. Asia Pacific is expected to emerge as the leading region with a demand of more than 60% of the global demand for HDPE.” 1.2 PROJECT OBJECTIVES The main objectives of this project were: 1. To explore North American water utilities on their experiences with durability5 and reliability6 of large diameter HDPE pipes in water applications. 4 The compounded annual growth rate, or CAGR, measures the return on an investment over a certain period of time. 5 According to Ballantyne (1994), durability is the ability of pipe and fittings to remain in service during its design life without significant deterioration. 4 ©2015 Water Research Foundation. ALL RIGHTS RESERVED. Market SharePDF Image | Large Diameter HDPE Pipe for Water Main Applications
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