060201abC Drainage And Venting Systems Part C Flashcards
Ideal flow rate through all drains and sewer piping is what
600mm or 2 feet per second
How high and where should a laundry standpipe terminate
Minimum 2’ or 600mm and be terminated above flood level rim of the clothes washer
Minimum drain size for laundry standpipe and should it be separately vented ?
2” minimum and separately vented
Minimum height above the roof a stack should protrude through the roof
Minimum 6”
What’s the minimum an emergency floor drains trap arm must be
Minimum 18” and must not exceed 1 pipe diameter fall
Minimum length a water closet tram arm can move horizontally and vertically
3 metres horizontally and 1 metre vertically below the flange
What are the code requirements for clean outs at the base of a stack
Every stack at its base or a maximum of 3 metres upstream have a cleanout
How is continuous waste sized and the max length
Sized according to fixture outlet size max length is 1200mm or 1.2 m from furthered fixture outlet to the trap inlet
What table do you use for its fixture load and maximum developed length
2.5.8.3
What table must be referenced for sizing all vents. And if any discrepency in sizing this table takes precedence
2.5.7.1
Ideal flow rate through any sewer line
2ft (600mm) per second
Lavatory sink rough in measurements
Centre of sink directly behind 16-18” to construction floor
Water closet rough in locations/ height
12” from back wall minimum 15” each side
Tub rough in location
Centre of tub width. 2”-6” from back wall
Kitchen sink rough in location/ heights
Back of cabinet, 12” from the side 12-15” high
What type of water for testing DWV
Potable or non potable
How long must a dwv water taste take place
Hold water for 15 minutes no leaks
What psi for an air test on DWV
5 psi or 35kpa
With a smoke test on DWV what must be connected somewhere on the system and what do you pressure the line too
A manometer must be connected somewhere on the line and test the line up to 1” or 25mm of water column. Must hold for 15 mins
Why can’t you air pressure up the DWV system over 1” of water column for a test
It will blow the trap seals out
When cleaning a drain line what works best for cutting roots
Cutting head
