Douglas County Rules and Regulations for Swimming Pools - Cobb ...

pool s taff t o m onitor pool w ater t emperatures. Ctemperature shall not be accessible to bathers.ontrol of t he po ol’s w aterPart 12 Piping and Hydraulicsa.) Piping. The piping system shall consist of non-toxic materials and be able to withstand aminimum pressure of fifty pounds per square inch (50 p.s.i.). Piping configuration shall bedesigned to minimize friction losses. All piping used for pool circulation and manufacturersmust meet the standards set forth in the current edition of ANSI/NSF 50, “Circulation SystemComponents a nd R elated M aterials f or S wimming P ools, S pas/Hot T ubs”, or a lternatecriteria approved by the department. All pool piping shall bear the N.S.F. seal for potablewater and be schedule 40 or greater. Pipe installation shall comply with the applicable localplumbing code and this article. All valves and piping in the equipment room shall be clearlylabeled, a nd w ater f low di rection s hall be i ndicated on e xposed pi ping in t he f ilter r oom.Piping shall be installed to facilitate complete drainage of the system. Heat bending of anypool piping for installation is prohibited.(1) Maximum velocity. V elocity s hall not e xceed t en f eet pe r s econd ( 10 f .p.s.) i npressure piping or six feet per second (6 f.p.s.) in suction piping.(2) Main drain line. T he m ain dr ain l ine s hall be de signed a nd c onstructed t oaccommodate 100% of the design flow rate, and head loss calculations shall includefriction losses of the pipe, fittings and the hair and lint strainer. The size of the maindrain pipe shall be continuous throughout the length of the line.(3) S kimming system lines. T he s kimming s ystem l ines s hall be de signed andconstructed to accommodate 100% of the design flow rate. The flow-through rate ofthe skimming system, based on the manufacturer’s minimum recommendations, shallbe used to determine the turnover rate if the turnover rate exceeds the manufacturer’srecommendations.(4) Waste lines. Pool wastewater shall be di rected to an approved sewage disposalsystem. The backwash waste line shall be no smaller than the size of the pipe exitingthe f ilter f or the entire l ength o f t he b ackwash l ine. There s hall b e no directconnection be tween a ny pool pi ping a nd t he a pproved di sposal s ystem. Dischargepoints shall be shown on the plans.(5) Piping details. P lans must include complete details of all pool piping. All poolpiping shall be supported in accordance with manufacturer’s recommendations.(6) Unknown Total Dynamic Head. Existing p ools ut ilizing s and filters w ith anunknown total d ynamic head shall be considered to have a minimum of sixty (60’)feet of h ead. E xisting pools ut ilizing di atomaceous e arth filters w ith a n unknow ntotal dynamic head shall be considered to have a minimum of fifty (50’) feet of headon vacuum systems and ninety (90’) feet of head on pressure systems. Existing poolsutilizing cartridge filters with an unknown total of dynamic head shall be consideredCobb and Douglas County Public HealthDouglas Rules and Regs for Swimming Pools22