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18-29-906.1  Distance of trap from vent.
   Each fixture trap shall have a protecting vent located so that the slope and the developed length in the fixture drain from the trap weir to the vent fitting are within the requirements set forth in Table 18-29-906.1.
Table 18-29-906.1
Maximum Distance of Fixture Trap from Vent
 
Size of Trap (inches)
Size of Fixture Drain (inches)
Slope
(inch per foot)
Distance from Trap (feet)
1 1/4
1 1/2
1/4
5
1 1/2
1 1/2
1/4
5
1 1/2
2
1/4
5
2
2
1/4
5
3
3
1/8
5
4
4
1/8
5