TABLE 7-3 7-5: MAX. UNIT LOADING AND MAX. DRAINAGE FIXTURE UNIT VALUES (DFU) LENGTH OF DRAINAGE AND VENT PIPING Abbreviated Table Abbreviated PLUMBING MIN. SIZE PRIVATE SIZE OF PIPE 1 ¼ 1 ½ 2 2 ½ 3 4 FIXTURES TRAP ARM (DFUs) (inches) (inches) Max. DFUs Bathtub/Shower BT 1 ½ 2.0 Vertical 1 2 16 32 48 256 – Clothes Washer ACW 2 3.0 Horizontal 1 1 8 14 35 216 – Water Closet WC 3 3.0 – Lavatory Single LAV 1 ¼ 1.0 – Kitchen Sink KS 1 ½ 2.0 – Floor Drain FD 2 0.0 – At Section A, the number of DFUs is 80 calculated to be ______. 100 10 20 The minimum size drainage pipe at Section 30 C must be ______ diameter. 40 1-1/2 inch 60 2 inches 3 inches The minimum size drainage pipe at Section 4 inches A must be ______ diameter. 1-1/2 inch At Section D, the number of DFUs is 2 inches calculated to be ______. 3 inches 3 4 inches 5 6 11 22 At Section B, the number of DFUs is The minimum size drainage pipe at Section calculated to be ______. D must be ______ diameter. 10 1-1/2 inch 20 2 inches 30 3 inches 40 4 inches 60 At Section E, 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 100 3 inches 103 4 inches 163 The minimum size drainage pipe at Section E must be ______ diameter. 1-1/2 inch At Section C, the number of DFUs is 2 inches calculated to be ______. 3 inches 20 4 inches 40 60
TABLE 7-3 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 Floor Drain – FD 2 0.0 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 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