AGRU America Water & Waste Water Solutions by AGRU - Page 7

Transmission Systems
The typical U . S . water system presents an average leakage rate of about 14 % to 18 %, which is relatively high for a developed country ( 3 ). Developed countries on average lose between 8 % and 24 % of the water produced . In developing countries , the water loss can reach as high as 68 % of the total amount of water produced . The World Health Organization attributes most of the physical losses to poor network design , construction , and quality control ; aging pipe network ; and leakage at connections joints , valves , and fittings ( 4 ). Reducing water lost to leakage by creating leak-proof joints with HDPE pipes and fittings can significantly improve the performance of water transmission systems and promote water conservation .
HDPE Pipes and Fittings Unlike other pipes and fittings made with traditional materials like concrete , high-density polyethylene ( HDPE ) pipes and fittings can be welded together to create joints with virtually no leakage . Pipes made with HDPE are lightweight and flexible , facilitating a number of installation methods such as horizontal directional drilling ( HDD ) and transport options such as ocean towing . HDPE pipes have recently been manufactured at XXL dimensions reaching 3,500 mm in outer diameter and 600 m in length .
The durability of HDPE pipes improves as its size increases , and these pipes have shown high resistance to seismic forces . In one case study of the Kobe 1995 earthquake , while all other pipes in the city ’ s infrastructure showed at least one failure every four miles of pipe , HDPE pipes demonstrated zero failures across the entire system . XXL HDPE pipes would demonstrate even greater seismic resistance if manufactured with PE100-RC ( 5 ). Seismic resistance is especially important for pipes buried deep underground in regions known to experience earthquakes .
See page 15 for more information about AGRU HDPE Pipes and Fittings .
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