TABLE 703.2: MAX. UNIT LOADING AND MAX. LENGTH OF DRAINAGE AND VENT PIPING Abbreviated Table SIZE OF PIPE (inches) 1 ¼ 1 ½ 2 3 4 5 Max. DFUs Vertical Horizontal 1 1 2 1 16 8 48 35 256 216 600 428 702.1 DRAINAGE FIXTURE UNIT VALUES (DFU) Abbreviated Table PLUMBING FIXTURES MIN. SIZE TRAP ARM (inches) PRIVATE (DFUs) Bathtub/Shower – BT 1 ½ 2.0 Clothes Washer – ACW 2 3.0 Water Closet – WC 3 3.0 Lavatory Single – LAV 1 ¼ 1.0 Kitchen Sink – KS 1 ½ 2.0 At Section A, the number of DFUs is calculated to be ______. 3 5 6 11 22 The minimum size drainage pipe at Section A must be ______ diameter. 1-1/2 inch 2 inches 3 inches 4 inches At Section B, the number of DFUs is calculated to be ______. 3 5 6 11 22 The minimum size drainage pipe at Section B must be ______ diameter. 1-1/2 inch 2 inches 3 inches 4 inches At Section C, the number of DFUs is calculated to be ______. 3 5 6 11 22 The minimum size drainage pipe at Section C must be ______ diameter. 1-1/2 inch 2 inches 3 inches 4 inches At Section D, the number of DFUs is calculated to be ______. 3 5 6 11 22 The minimum size drainage pipe at Section D must be ______ diameter. 1-1/2 inch 2 inches 3 inches 4 inches At Section E, the number of DFUs is calculated to be ______. 3 5 6
11 22 The minimum size drainage pipe at Section E must be ______ diameter. 1-1/2 inch 2 inches 3 inches 4 inches At Section F, the number of DFUs is calculated to be ______. 3 5 6 11 22 The minimum size drainage pipe at Section F must be ______ diameter. 1-1/2 inch 2 inches 3 inches 4 inches At Section G, the number of DFUs is calculated to be ______. 3 5 6 11 22 The minimum size drainage pipe at Section G must be ______ diameter. 1-1/2 inch 2 inches 3 inches 4 inches Quiz 4 TABLE 702.1 DRAINAGE FIXTURE UNIT VALUES (DFU) Abbreviated Table PLUMBING FIXTURES MIN. SIZE TRAP ARM (inches) Public (DFUs) Bathtub/Shower – BT 1 ½ 2.0 Clothes Washer – ACW 2 3.0 Water Closet – WC 3 4 Lavatory Single – LAV 1 ¼ 1.0 Kitchen Sink – KS 1 ½ 2.0
Floor Drain – FD 2 0.0 ABLE 703.2: MAX. UNIT LOADING AND MAX. LENGTH OF DRAINAGE AND VENT PIPING Abbreviated Table SIZE OF PIPE (inches) 1 ¼ 1 ½ 2 3 4 5 Max. DFUs Vertical Horizontal 1 1 2 1 16 8 48 35 256 216 600 428 At Section A, the number of DFUs is calculated to be ______. 10 20 30 40 60 The minimum size drainage pipe at Section A must be ______ diameter. 1-1/2 inch 2 inches 3 inches 4 inches At Section B, the number of DFUs is calculated to be ______. 10 20 30 40 60 The minimum size drainage pipe at Section B must be ______ diameter. 1-1/2 inch 2 inches 3 inches 4 inches At Section C, the number of DFUs is calculated to be ______. 20 40 60 80 100 The minimum size drainage pipe at Section C must be ______ diameter. 1-1/2 inch 2 inches 3 inches 4 inches At Section D, the number of DFUs is calculated to be ______. 3 5 6 11 22 The minimum size drainage pipe at Section D must be ______ diameter. 1-1/2 inch 2 inches 3 inches 4 inches At Section E, the number of DFUs is calculated to be ______. 3 5 100 103 163 The minimum size drainage pipe at Section E must be ______ diameter. 1-1/2 inch 2 inches 3 inches 4 inches At Section F, the number of DFUs is calculated to be ______. 10 20 30 40 60 The minimum size drainage pipe at Section F must be ______ diameter. 1-1/2 inch 2 inches 3 inches 4 inches At Section G, the number of DFUs is calculated to be ______. 3 5 100 103 163
12 inches 24 inches all of the answers provided The minimum clearance for a cleanout serving pipes larger than 2 inches is ______ in front of the cleanout. 1-1/2 inch 1 foot 18 inches 24 inches none of the answers provided The maximum distance from an access door to an under-floor cleanout is ______. 5 feet 10 feet 20 feet 25 feet 50 feet The minimum vertical clearance distance from an under-floor cleanout is ______. 1-1/2 inch 1 foot 18 inches 24 inches none of the answers provided Countersunk cleanout plugs shall be installed where raised heads cause a hazard. True False Quiz 7 Horizontal drainage pipes should have a uniform slope of ______ per foot. 1/16 inch 1/8 inch 1/4 inch 1/2 inch 1 inch Upon approval of the AHJ, a drainage pipe may be placed at ______ per foot. 1/16 inch 1/8 inch 1/4 inch 1/2 inch 1 inch If a drainage pipe is placed at 1/8 inch per foot, the DFU that this drainage pipe is rated is at ______ of Table 703.2. 50% 60% 70% 80% 90% Fixtures that are ______ than the next upstream manhole need to be protected from back flow of sewage with an approved type of backwater valve. higher parallel neither higher or lower Fixtures that are above the next downstream sewer manhole ______ protected by a backwater valve. must be do not need to be code does not address this situation A sewage ejector pump that receives discharge of W.C. and urinals needs to have a capacity of at least ______. 5 gpm 10 gpm 15 gpm 20 gpm 30 gpm In a single dwelling unit, the ejector or pump will need to pump a ______ diameter solid ball. 1 inch 1-1/2 inch 2 inches 2-1/2 inches 3 inches In an apartment building, the ejector or pump will need to pump a ______ diameter solid ball. 1 inch 1-1/2 inch 2 inches 2-1/2 inches 3 inches