11/2-inch diameter and larger Cross-linked polyethylene (PEX) pipe 2.67 (32 inches) 10b Cross-linked polyethylene/ aluminum/cross-linked polyethylene (PEX-AL- PEX) pipe 2.67 (32 inches) 4 CPVC pipe or tubing, 1 inch and smaller 3 10b CPVC pipe or tubing, 11/4 inches and larger 4 10b Steel pipe 12 15 Lead pipe Continuous 4 Polyethylene/aluminum/ polyethylene (PE-AL-PE) pipe 2.67 (32 inches) 4 Polyethylene of raised temperature (PE-RT) pipe 2.67 (32 inches) 10b Polypropylene (PP) pipe or tubing 1 inch and smaller 2.67 (32 inches) 10b Polypropylene (PP) pipe or tubing, 11/4 inches and larger 4 10b PVC pipe 4 10b Stainless steel drainage systems 10 10b For SI: 1 inch = 25.4 mm, 1 foot = 304.8 mm. a. The maximum
the fixture. The minimum size of individual distribution lines utilized in gridded or parallel water distribution systems shall be as shown in Table 604.5. TABLE 604.5 MINIMUM SIZES OF FIXTURE WATER SUPPLY PIPES FIXTURE MINIMUM PIPE SIZE (inch) Bathtubsa (60″ × 32″ and smaller) 1/2 Bathtubsa (larger than 60″ × 32″) 1/2 Bidet 3/8 Combination sink and tray 1/2 Dishwasher, domestica 1/2 Drinking fountain 3/8 Hose bibbs 1/2 Kitchen sinka 1/2 Laundry, 1, 2 or 3 compartmentsa 1/2 Lavatory 3/8 Shower, single heada 1/2 Sinks, flushing rim 3/4 Sinks, service 1/2 Urinal, flush tank 1/2 Urinal, flushometer valve 3/4 Wall hydrant 1/2 Water closet, flush tank 3/8 Water closet, flushometer valve 1 Water closet, flushometer tank 3/8 Water closet, one piecea 1/2
in accordance with AWWA C104. TABLE 605.3 WATER SERVICE PIPE MATERIAL STANDARD Acrylonitrile butadiene styrene (ABS) plastic pipe ASTM D 1527; ASTM D 2282 Asbestos-cement pipe ASTM C 296 pipe ASTM B 43 Chlorinated polyvinyl chloride (CPVC) plastic pipe ASTM D 2846; ASTM F 441; ASTM F 442; CSA B137.6 Copper or copper-alloy pipe ASTM B 42; ASTM B 302 Copper or copper-alloy tubing (Type K, WK, L, WL, M or WM) ASTM B 75; ASTM B 88; ASTM B 251; ASTM B 447 Cross-linked polyethylene (PEX) plastic pipe and tubing ASTM F 876; ASTM F 877; AWWA C904; CSA B137.5 Cross-linked polyethylene (PEX-AL-PEX) pipe ASTM F 1281; ASTM F 2262; CSA B137.10M Cross-linked polyethylene (PEX-AL-HDPE) ASTM F 1986 Ductile iron water pipe AWWA C151/A21.51; AWWA C115/A21.15 Galvanized steel pipe ASTM A 53 Polyethylene (PE) plastic pipe ASTM D 2239; ASTM D 3035; AWWA C901; CSA B137.1 Polyethylene (PE) plastic tubing ASTM D 2737; AWWA C901; CSA B137.1 Polyethylene/aluminum/polethylene (PE-AL-PE) pipe ASTM F 1282; CSA B137.9 Polyethylene of raised temperature (PE-RT) plastic tubing ASTM F 2769 Polypropylene (PP) plastic pipe or tubing ASTM F 2389; CSA B137.11 Polyvinyl chloride (PVC) plastic pipe ASTM D 1785; ASTM D 2241; ASTM D 2672; CSA B137.3 Stainless pipe (Type 304/304L) ASTM A 312; ASTM A 778 Stainless steel pipe (Type 316/316L) ASTM A 312; ASTM A 778
DEVICE DEGREE OF HAZARDa APPLICATIONb APPLICABLE STANDARDS Air gap High or low hazard Backsiphonage or backpressure ASME A112.1.2 Air gap fittings for use with plumbing fixtures, appliances and appurtenances High or low hazard Backsiphonage or backpressure ASME A112.1.3 Antisiphon-type fill valves for gravity closet flush tanks High hazard Backsiphonage only ASSE 1002, CSA B125.3 Backflow preventer for carbonated beverage machines Low hazard Backpressure or backsiphonage Sizes 1/4″ – 3/8″ ASSE 1022 Backflow preventer with intermediate atmospheric vents Low hazard Backpressure or backsiphonage Sizes 1/4″–3/4″ ASSE 1012, CSA B64.3 Barometric loop High or low hazard Backsiphonage only (See ) Double backflow prevention assembly and double check fire protection backflow prevention assembly Low hazard Backpressure or backsiphonage 3/8″–16″ ASSE 1015, AWWA C510, CSA B64.5, CSA B64.5.1 Double detector fire protection backflow prevention assemblies Low hazard Backpressure or backsiphonage (Fire sprinkler systems) Sizes 2″–16″ ASSE 1048 Dual-check-valve-type backflow preventer Low hazard Backpressure or backsiphonage Sizes 1/4″–1″ ASSE 1024, CSA B64.6 Hose connection backflow preventer High or low hazard Low head backpressure, rated working pressure, backpressure or backsiphonage Sizes 1/2″–1″ ASSE 1052, CSA B64.2.1.1 Hose connection vacuum breaker High or low hazard Low head backpressure or backsiphonage Sizes 1/2″,3/4″, 1″ ASSE 1011, CSA B64.2, CSA B64.2.1 trial
Laboratory faucet backflow preventer High or low hazard Low head backpressure and backsiphonage ASSE 1035, CSA B64.7 Pipe-applied atmospheric-type vacuum breaker High or low hazard Backsiphonage only Sizes 1/4″–4″ ASSE 1001, CSA B64.1.1 Pressure vacuum breaker assembly High or low hazard Backsiphonage only Sizes 1/2″–2″ ASSE 1020, CSA B64.1.2 Reduced pressure principle backflow prevention assembly and reduced pressure principle fire protection backflow prevention assembly High or low hazard Backpressure or backsiphonage Sizes 3/8″–16″ ASSE 1013, AWWA C511, CSA B64.4, CSA B64.4.1 Reduced pressure detector fire protection backflow prevention assemblies High or low hazard Backsiphonage or backpressure (Fire sprinkler systems) ASSE 1047 Spill-resistant vacuum breaker assembly High or low hazard Backsiphonage only 1/4″–2″ ASSE 1056 Vacuum breaker wall hydrants, frost-resistant, automatic draining type High or low hazard Low head backpressure or backsiphonage Sizes 3/4″, 1″ ASSE 1019, CSA B64.2.2 For SI: 1 inch = 25.4 mm. a. Low hazard—See Pollution (). High hazard—See Contamination (). b. See Backpressure (). See Backpressure, low head (). See Backsiphonage (). 608.2 Plumbing fixtures. The supply lines and fittings for plumbing fixtures shall be installed so as to prevent backflow. Plumbing fixture fittings shall provide backflow protection in accordance with ASME A112.18.1/CSA B125.1. 608.3 Devices, appurtenances, appliances and apparatus. Devices, appurtenances, appliances and apparatus intended to serve some special function, such as sterilization, distillation, processing, cooling, or storage of ice or foods, and that connect to the water supply system, shall be provided with protection against backflow and contamination of the water supply system. Water pumps, filters, softeners, tanks and other appliances and devices that handle or treat potable water shall be protected against contamination.
Unit Fee Schedule 1. For each plumbing fixture or trap or set of fixtures on one trap (including water, drainage piping and backflow protection thereof) ______ 2. For each building sewer and each trailer park sewer ______ 3. Rainwater systems—per drain (inside building) ______ 4. For each cesspool (where permitted) ______ 5. For each private sewage disposal system ______ 6. For each water heater and/or vent ______ 7. For each industrial waste pretreatment interceptor including its trap and vent, excepting kitchen-type grease ______
2 inches (51 mm) and smaller ______ Over 2 inches (51 mm) ______ Other Inspections and Fees 1. Inspections outside of normal business (minimum charge two hours) _____ per hour 2. Reinspection fee assessed provisions of Section 107.4.3 ______ each 3. Inspections for which no fee is specifically indicated (minimum charge hour) ______ per hour 4. Additional plan review required by changes, additions or revisions to approved plans (minimum charge hour) ______ per hour
length of piping is the developed length plus the equivalent lengths of pipe corresponding to friction head losses for fittings and valves. Where the size of fittings and valves is not known, the added friction head losses must be approximated. An estimate for this example is found in Table E.1. Step 8 Column 7: Add the figures from Column 4 and Column 6, and enter in Column 7. Express the sum in hundreds of feet. TABLE E.1 COLD WATER PIPE SECTION FITTINGS/VALVES PRESSURE LOSS EXPRESSED AS EQUIVALENT LENGTH OF TUBE (feet) HOT WATER PIPE SECTION FITTINGS/VALVES PRESSURE LOSS EXPRESSED AS EQUIVALENT OF TUBE (feet) A-B 3-21/2″ Gate valves 3 A-B 3-21/2″ Gate valves 3 1-21/2″ Side branch tee 12 1-21/2″ Side branch tee 12 B-C 1-21/2″ Straight run tee 0.5 B-C 1-2″ Straight run tee 7 1-2″ 90-degree ell 0.5 C-F 1-21/2″ Side branch tee 12 C-F 1-11/2″ Side branch tee 7 C-D 1-21/2″ ell 7 C-D 1-1/2″ 90-degree ell 4 D-E 1-21/2″ Side branch tee 12 D-E 1-11/2″ Side branch tee 7 For SI: 1 foot = 304.8 mm, i inch = 25.4 mm. Step 9 Column 8: Select from Figure E103.3(3) the friction loss per 100 feet (30 480 mm) of pipe for the gallon-per-minute flow in a section (Column 3) and pipe size (Column 5). Maximum friction head loss per 100 feet is determined on the basis of total pressure available for friction head loss and the longest equivalent length of run. The selection is based on the gallon-per-minute demand, the uniform friction head loss, and the maximum design velocity. Where the size indicated by hydraulic table indicates a
through H) ... ... ... ... Pressure available to overcome pipe friction (Line A minus Lines B to H) ... ... ... ... Pipe section (from diagram) Cold water piping FU ... ... ... ... ... ... ... ... AB ... ... ... ... ... ... ... ... BC ... ... ... ... ... ... ... ... CD ... ... ... ... ... ... ... ... CFb... ... ... ... ... ... ... ... DEb ... ... ... ... ... ... ... ... 264 288 264 132 132 132 108.0 104.5 77.0 77.0 77.0 54 8 13 150 150 21/2 21/2 21/2 21/2 21/2 15.00 0.5 7.00 12.00 12.00 0.69 0.85 0.20 1.62 1.62 3.2 3.1 1.9 1.9 1.9 2.21 0.26 0.38 3.08 3.08 — — — — — K L Total pipe friction losses (cold) Difference (Line J minus Line K) — — — — — — — — — — — — 5.93 — — 3.43