1 2 6 16 32 Table 703.2 – The maximum DFU capacity of a 4-inch pipe in the horizontal position is ______. 32 35 48 216 256 Table 703.2 – The maximum DFU capacity of a 5-inch pipe in the vertical position is ______. 48 216 256 428 600 Table 703.2 – The maximum length for a pipe in the horizontal position is ______. 45 65 85 148 unlimited Horizontal drainage pipe should be run with a uniform slope of not less than ______ per foot toward the point of disposal. 1/8 inch 1/4 inch 3/8 inch 1/2 inch Does not matter as long as it is sloping downhill Waste water should fill the pipe ______ full. 1/6 to 1/3 1/3 to 1/2 1/2 to 3/4 Does not matter as long as it is sloping downhill A vent in a drainage system is used to ______. equalize the air pressure on both sides of the waste water flow keep the water seal from being blow out of the trap keep the water seal from being siphoned into the drainage pipe all of the answers provided none of the answers provided Table 703.2 – A 2-inch vent pipe has the capacity to handle ______ DFU. 1 8 24 48 84 Table 703.2 – The maximum length for a vent pipe is ______ vertical feet. 45 60 120 180 212 All drainage pipe must be supported at intervals of ______ feet or less. 2 3 4 6 10 Quiz 3
TABLE 703.2: MAX. UNIT LOADING AND MAX. LENGTH OF DRAINAGE AND VENT PIPING Abbreviated SIZE OF PIPE (inches) 1 ¼ 1 ½ 2 3 4 5 Max. DFUs Vertical Horizontal 1 1 2 2 16 8 48 35 256 216 600 428 TABLE 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 2.0 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 4 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 10 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 4 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 10 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 20 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 4.0 Lavatory Single – LAV 1 ¼ 1.0 Kitchen Sink – KS 1 ½ 2.0
Floor Drain – FD 2 0.0 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 2 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