b'LT ENGINEERINGCATALOG SIZINGThe lint interceptor is generally sized according to the local plumbing code. The different variables include number of washing machines, wastewater flow rate, wastewater detention time, storage factor, and detention time. Establishments with more than 30 washing machines need to have the lint interceptor sized by a Registered Professional Engineer.This BMP for commercial laundromats has proven effective for over a quarter century. The method originated from established plumbing codes and has been utilizedby many Authorities Having Jurisdiction (AHJ).For Laundromats, the equation to use is:(TGC) x (CPH) x (RT) x (ST) = Size (gallons) of InterceptorExample: A typical commercial Laundromat has 30 small washing machines and two large machines. The manufacturer states that small machines use 38 gallons of water per complete wash cycle of 25 minutes. The large machines use 52 gallons per each complete wash cycle of 30 minutes. The Laundromat will be open 16 hours a day. What size interceptor is required to connect to a private sewage disposal system?Solution: The first step is to determine the total number of gallons per cycle. Use the manufactures data on the washing machines if available. (In absence of this data,use 50 gallons per wash cycle per machine).1.Number of machines: 30 small Numbers of machines: 2 large2. TGC = 30 x 38 gallons/cycle =1140 gallons/cycle + 2 x 52 gallons/cycle =104 gallons/cycle1244 gallons/cycle3. CPH = 2 cycles per hour4. Retention Time RT = 2.0 hours5. Storage Factor ST = 1.5Using the formula:(TGC) x (CPH) x (RT) x (ST) = Size of Interceptor (gallons)(1244) x (2) x (2.0) x (1.5) = 7464 GallonsTypical Amendment by cities for smaller Laundromats:1.Laundry with 5 to 10 washing machines 500-Gallon Capacity (LintTrooper LT-500)2. Laundry with 11 to 20 washing machines 1,000-Gallon Capacity (LintTrooper LT-1000)3. Laundry with 21 to 30 washing machines 1,500-Gallon Capacity (LintTrooper LT-1500)268 INFO@PARKUSA.COM|888-611-7275|WWW.PARKUSA.COM'