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

(4) Main drain openings. Each pool s hall be pr ovided w ith t wo (2) or m orehydraulically b alanced main drain openings f or each main drain line at t he de epestportion and constructed to completely drain the pool. M ain drain openings must becovered by an approved, secured, and listed suction outlet cover/grate, that is installedaccording to all manufacturer specifications. The open area of each drain cover shallbe at least four (4) times the cross-sectional area of the drain pipe, and sufficient flowarea shall be provided so that the full flow velocity at any part of the cover/grate willnot exceed one and one half feet per second (1½ fps). Openings between cover/gratebars shall not exceed one half inch (1/2”). Main drain openings shall be constructedin parallel, in a tee configuration, and spaced evenly across the deep portion of thepool, w ith a m inimum s pacing of five f eet ( 5’) between each m ain dr ain ope ningmeasured f rom c enter to c enter of s uction pi pes. If t he l isted s uction out letcover/grate manufacturer specifies a greater cover/grate separation than five feet (5’),then t hat di stance s hall be t he m inimum a llowed s eparation. Alternatively, maindrain ope nings m ay b e located on t wo ( 2) di fferent pl anes. If t hree or more m aindrain openings a re in stalled, their ins tallation shall be in accordance withANSI/APSP-7 2006 or any successor standard. Main drain opening sumps shall meetthe mini mum de sign criteria de signated by the manufacturer of the s uction outletcover/grate.(5) Skimmers and overflow gutters. A s urface s kimming or g utter s ystem s hall beprovided for each pool and shall be designed and constructed to skim the pool surfacewhen the w ater le vel is ma intained within the ope rating w ater le vel r ange of t hesystem’s weir device or rim.(6) Vacuum cleaning system. A vacuum system shall be provided for pool cleaning.Wall mounted vacuum cleaning fitting(s) shall be located in an accessible position(s)at least six inches (6”) and no greater than eighteen inches (18”) below the minimumoperating w ater l evel o r as an attachment t o t he s kimmer(s). A va cuum f ittingcover(s) that is self closing, self latching, and compliant with IAPMO SPS 4 shall beprovided for w all m ounted t ype va cuum s ystems. If a pproved f or us e, por tablevacuum systems shall not be stored on the pool deck.(7) Flow meters. A n ade quately s ized flow m eter, cap able of m easuring andindicating a minimum range of one half (½) to one and one half (1½) times the designflow rate shall be installed on the pool return line to accurately indicate the circulationrate in gallons per minute. Flow meters shall be conspicuously located and installedin accordance with the manufacturer’s instructions for placement.(8) Heaters. P ools equipped with heaters s hall ha ve a fixed thermometer in thecirculation line. W ater temperature s hall b e the rmostatically controlled. A dequateexternal va lves a nd pi ping s hall be pr ovided t o e nable b ypassing t he he ater a nd t ofacilitate complete removal for repairs without interruption of pool circulation. At alltimes the temperature in the pool water shall not exceed one hundred and four degreesFahrenheit ( 104º F ). H eaters s hall be i nstalled a ccording t o t he m anufacturer’sinstructions and in accordance with all applicable state, county and local codes. A nunbreakable thermometer designed for use in a pool must be available for bathers andCobb and Douglas County Public HealthDouglas Rules and Regs for Swimming Pools21