TABLE 7-5: MAX. UNIT LOADING AND MAX. LENGTH OF DRAINAGE AND VENT PIPING Abbreviated TABLE 7-3 SIZE OF PIPE 1 ¼ 1 ½ 2 2 ½ 3 4 DRAINAGE FIXTURE UNIT VALUES (DFU) (inches) Abbreviated Max. DFUs PLUMBING MIN. SIZE PRIVATE Vertical 1 2 16 32 48 256 FIXTURES TRAP ARM (DFUs) Horizontal 1 1 8 14 35 216 (inches) 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 The minimum size drainage pipe at Section calculated to be ______. B must be ______ diameter. 3 1-1/2 inch 5 2 inches 6 3 inches 11 4 inches 22 The minimum size drainage pipe at Section A must be ______ diameter. 1-1/2 inch 2 inches 3 inches At Section C, the number of DFUs is 4 inches calculated to be ______. 3 5 6 11 22 At Section B, the number of DFUs is The minimum size drainage pipe at Section calculated to be ______. C must be ______ diameter. 3 1-1/2 inch 5 2 inches 6 3 inches 11 4 inches 22
TABLE 7-5: MAX. UNIT LOADING AND MAX. LENGTH OF DRAINAGE AND VENT PIPING Abbreviated SIZE OF PIPE (inches) 1 ¼ 1 ½ 2 2 ½ 3 4 Max. DFUs Vertical Horizontal 1 1 2 1 16 8 32 14 48 35 256 216 TABLE 7-3 DRAINAGE FIXTURE UNIT VALUES (DFU) Abbreviated 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
2009%20UPC%20Chapter%207%20Sanitary%20Drains%20Questions.docx