Design Guide for Community Water Systems - The Water, Sanitation ...
Design Guide for Community Water Systems - The Water, Sanitation ...
Design Guide for Community Water Systems - The Water, Sanitation ...
You also want an ePaper? Increase the reach of your titles
YUMPU automatically turns print PDFs into web optimized ePapers that Google loves.
Chapter 6 -- Minimum Construction Requirements <strong>for</strong>Pumping Facilities6.0 GeneralThis section applies to community water systems that construct or make majormodifications to pumping facilities.6.01. National Standards.a. Unless otherwise noted in this document, design and construction of thefollowing components shall be in accordance with the latest edition of theAmerican <strong>Water</strong> Works Association (AWWA) Standards:1. AWWA Standard E101 <strong>for</strong> Vertical Turbine Pumps-Line Shaft andSubmersible Types;2. AWWA Standard C500 <strong>for</strong> Metal Seated Gate Valves <strong>for</strong> <strong>Water</strong>Supply Service;3. AWWA Standard C509 <strong>for</strong> Resilient Seated Gate Valves <strong>for</strong> <strong>Water</strong>Supply Service;4. AWWA Standard C504 <strong>for</strong> Rubber Seated Butterfly Valves;5. AWWA Standard C507 <strong>for</strong> Ball Valves 6-inch Through 48-inch;6. AWWA Standard C508 <strong>for</strong> Swing-Check Valves <strong>for</strong> <strong>Water</strong> WorksService 2-inch Through 24-inch;7. AWWA Standard C115 <strong>for</strong> Flanged Ductile Iron Pipe withDuctile-Iron or Gray-Iron Threaded Flanges;8. AWWA Standard C200 <strong>for</strong> Steel <strong>Water</strong> Pipe 6-inch and Larger;9. AWWA Standard C206 <strong>for</strong> Field Welding of Steel <strong>Water</strong> Pipe;10. AWWA Standard C207 <strong>for</strong> Steel Pipe Flanges <strong>for</strong> <strong>Water</strong> WorksServices Sizes 4-inch Through 144-inch; and11. AWWA Standard C220 <strong>for</strong> Stainless-Steel Pipe 4-inch and Larger.b. Centrifugal Pumps.Unless otherwise noted in this document, centrifugal pumps shall bedesigned and constructed in accordance with the latest Hydraulic InstituteStandards B73.1 (horizontal types) or B73.2 (vertical types), except thatthe following requirements shall be observed:1. Larger stuffing boxes <strong>for</strong> mechanical seals shall be used;2. Solid Shafts shall be used <strong>for</strong> close coupled, end suction,horizontal centrifugal pumps to eliminate bending motion causedby the impeller; and3. Close coupled, end suction, horizontal centrifugal pumps shouldnot be used if the L 3 /D 4 ratio is greater than 60 where L is shaftlength and D is shaft diameter.c. Electrical Equipment.Unless otherwise noted in this document, design and construction of allelectrical equipment and all wiring associated with pumping facilities shallbe in accordance with the latest NFPA 70 National Electric CodeAug. 29, 2003Page 123
Change language