Laserfiche WebLink
Eclectic Spalon <br /> Plumbing <br /> Plan No.PLB1102-00114 <br /> Page 2 <br /> February 25, 2411 <br /> 3. The plans show that the existing 3-inch stack will serve the two pedicure spas,the two shampoo sinks,the <br /> four 2-inch floor drains,the two hand sinks,the four lavatories,the mop sink, and the two water closets. <br /> These fixtures account for a total of thirty-seven drainage fixture units,which is more than is allowed for a 3- <br /> inch stack(see Minnesota Rules,part 4715.2310, subpart 3).Verify that the 3-inch stack is increased to 4 <br /> inches in size where the final fixture connects to it or permanently remove one of the fixtures from service. <br /> 4. Changes in direction in drainage piping must be made by appropriate use of wyes and bends. Sanitary tees <br /> are not allowed where the direction of flow changes from either vertical to horizontal or horizontal to <br /> horizontal(see Minnesota Rules,part 4715.2410). <br /> 5. Verify that every building sewer is served by a full-sized vent stack(3-inch minimum)that is continuous in <br /> size from its base to its terminal(see Minnesota Rules,part 4715.2520, subpart 1). <br /> 6. It is recommended that a cleanout be provided where new waste and vent piping connects with existing <br /> plumbing to facilitate required testing of the new installation. <br /> 7. Cleanouts sha11 be of the same nominal size as the pipes they serve up to 4 inches in size(see Minnesota <br /> Rules,part 4715.1010).A cleanout must be installed where there is an increase in pipe size from 2 inches to <br /> 3 inches and from 3 inches to 4 inches. <br /> 8. Based on a maximum developed length of pipe of 20 feet and a building water pressure at the meter between <br /> 46 and 60 psi, and using Minnesota Rules,part 4715.3800: <br /> a. The building supply line must be at least 1 inch in size between the water meter and the cold water <br /> distribution branch serving the mop sink/existing back-to-back restrooms. <br /> b. The hot water distribution branch serving the two pedicure spas,the two shampoo sinks,the two <br /> lavatories,the two hand sinks,and the mop sink must be at least 1 inch in size. <br /> 9. Please note the following requirements for the pedicure spas: <br /> a. Pedicure spas and their installation must comply with ASME/ANSI Standard A 112.19.7. If the pedicure <br /> spas do not meet this standard,they cannot be installed. <br /> b. Pedicure spas must discharge by gravity to the sanitary sewer through a direct connection.Pumped <br /> discharges to a floor drain or a receptor are not allowed. <br /> c. The drain branch from each pedicure spa must be trapped and individually vented in accordance with <br /> Minnesota Rules,part 4715.2620, subpart 4. <br /> d. If the water supply connections to the equipment have submerged inlets, or inlets below the spill line of <br /> the fixture or equipment,each connection must be provided with an approved backflow preventer or <br /> backflow preventer assembly as specified in Minnesota Rules,part 4715.2000 and part 4715.2010. <br /> 10. Please note the following requirements for the shampoo sinks: <br /> a. Adjustable tailpiece sink systems must comply with ASME Sta.ndard A112.19.12-2006. The tailpiece <br /> must k�e of rigid construction(see Minnesota Rules,part 4715.1390, subpart 3). <br /> b. A water supply line to a spray/rinse hose on a shampoo sink shall be protected against backflow by the <br /> use of an in-line vacuum breaker(see Minnesota Rules, part 4715.2110). <br /> 11. Shutoff valves shall be installed which permit the water supply to all equipment in each sepazate room or to <br /> each individual fixture to be shut off without interference with the water supply to any other room or portion <br /> of the building(see Minnesota Rules,part 4715.1800, subpart 6). <br />