2 6 Waste water should fill the pipe ______ full. 16 1/6 to 1/3 32 1/3 to 1/2 1/2 to 3/4 Table 7-5 The maximum DFU capacity of Does not matter as long as it is sloping – a 4-inch pipe in the horizontal position is downhill ______. 32 A vent in a drainage system is used to 35 ______. 48 equalize the air pressure on both sides of 216 the waste water flow 256 keep the water seal from being blow out of the trap Table 7-5 The maximum DFU capacity of keep the water seal from being siphoned – a 5-inch pipe in the vertical position is into the drainage pipe ______. all of the answers provided 48 none of the answers provided 216 256 Table 7-5 A 2-inch vent pipe has the – 428 capacity to handle ______ DFU. 600 1 8 Table 7-5 The maximum length for a 24 – pipe in the horizontal position is 48 ______. 84 45 65 7-5 The maximum length for a 2-inch – 85 vent pipe is ______ vertical feet. 148 45 unlimited 60 120 Horizontal drainage pipe should be run with 180 a uniform slope of not less than ______ per 212 foot toward the point of disposal. 1/8 inch All drainage pipe must be supported at 1/4 inch intervals of ______ feet or less. 3/8 inch 2 1/2 inch 3 Does not matter as long as it is sloping 4 downhill 6 10 TABLE 7-5: MAX. UNIT LOADING AND MAX. Quiz 3 Duplex Drainage Design – LENGTH OF DRAINAGE AND VENT PIPING Abbreviated Table SIZE OF PIPE 1 ¼ 1 ½ 2 2 ½ 3 4 (inches) Maximum Units Vertical 1 2 16 32 48 256 Horizontal 1 1 8 14 35 216
2 6 16 32 Table 7-5 – The maximum DFU capacity of a 4-inch pipe in the horizontal position is ______. 32 35 48 216 256 Table 7-5 – The maximum DFU capacity of a 5-inch pipe in the vertical position is ______. 48 216 256 428 600 Table 7-5 – 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 7-5 – A 2-inch vent pipe has the capacity to handle ______ DFU. 1 8 24 48 84 7-5 – The maximum length for a 2-inch 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 TABLE 7-5: MAX. UNIT LOADING AND MAX. LENGTH OF DRAINAGE AND VENT PIPING Abbreviated Table SIZE OF PIPE (inches) 1 ¼ 1 ½ 2 2 ½ 3 4 Maximum Units Vertical Horizontal 1 1 2 1 16 8 32 14 48 35 256 216 Quiz 3 – Duplex Drainage Design