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What is the minimum water seal that fixture traps must retain under normal operating conditions?
Fixture traps must retain a water seal of not less than 25 mm under normal operating conditions.
What is the fixture unit rating for a single shower with a DN 40 trap outlet and discharge pipe?
The fixture unit rating for a single shower with a DN 40 trap outlet and discharge pipe is 2.
What is the fixture unit rating for a pot or utility sink (PS) with a DN 50 trap outlet and discharge pipe?
The fixture unit rating for a pot or utility sink (PS) with a DN 50 trap outlet and discharge pipe is 5.
What is the fixture unit rating for a water closet pan (WC) with a DN 80 trap outlet and discharge pipe?
The fixture unit rating for a water closet pan (WC) with a DN 80 trap outlet and discharge pipe is 6 (with a flushing valve) and 4 (with a cistern).
What is the maximum discharge from any fixture into the single-stack and single-stack modified system?
The maximum discharge from any fixture into the single-stack and single-stack modified system is 500 liters. If the discharge exceeds this amount, the fixture unit loading must be determined according to Table 6.3(B).
What is the minimum distance for a connection to a drain or graded pipe from the base of a stack for stacks of three or more floor levels?
No connection shall be made closer than 2.5 meters downstream or 1 meter upstream of the base of the stack.
What is the maximum loading per floor level for a DN 40 stack with three or fewer floor levels?
What is 2 fixture units?
What is the minimum distance for a connection to a drain or graded pipe from the base of a stack for stacks of two or fewer floor levels?
No connection shall be made closer than 500 mm downstream or upstream of the base of the stack.
What is the required distance range for connecting the vent to a basin or bidet's fixture discharge pipe?
What is not closer than 75 mm and not further than 600 mm from the crown of the fixture trap?
What is the minimum required distance a vent must be from any air duct intake?
What is 5 meters?
What is the maximum fixture unit loading for a DN 80 graded discharge pipe with a grade of 5.00%?
What is 65 fixture units?
What is the maximum spacing of supports for PVC-U pipes with a diameter between DN 40 and DN 50."
What is 2 meters?"
What is the required size of a branch vent for a branch discharge pipe of DN 40?
What is DN 32?
At what angle should relief vents be connected to stacks?
What is 45°?
What is the required size of a branch vent for a branch discharge pipe of DN 100?
What is DN 50?
Single Stack Systems For commercial or industrial buildings, what is the maximum fixture unit loading allowed on a DN 125 stack?
What is 100?
What is the minimum required height for a vent above any opening into a building within 3 meters of the vent?
What is 600 mm?
What is the maximum length of a vertical dropper allowed specifically for basins and bidets?
What is 1.5 meters?
What are the requirements for bends at the base of stacks when connecting to graded pipes or drains?
Two 45° bends separated by a straight pipe at least twice the bore of the pipe.
An 88° bend when the stack extends through no more than two floor levels.
How many floor levels can a stack extend through while still using an air admittance valve (AAV) as a stack vent?
What is less than 10 floor levels? (An AAV cannot be used if the stack extends through 10 or more floor levels.)
What is the minimum size and requirement for an upstream vent in a system with an air admittance valve (AAV)?
What is the upstream vent must be at least DN 50 and open off the main drain?
what is the maximum number of basins that may be connected to a single stack from any floor level in a commercial building."
What is 5 basins?"
What is the minimum distance from the upper bend within which no connections may be made in a graded offset."
What is 2.5 meters?"
What is the maximum length allowed for the fixture discharge pipe from an S-trap water closet pan to the common discharge pipe.
What is 1.5 meters?
What is the maximum number of water closet pans allowed to be connected to a common discharge pipe?
What is five?
At a grade of 2.50%, the maximum fixture unit loading for a DN 80 graded discharge pipe is this number.
What is 27 fixture units?"
What is the required distance range for connecting the vent to a fixture other than a basin or bidet?
What is between 75 mm and 1,500 mm from the crown weir of the fixture trap, provided no changes of direction occur and there are specific conditions for S-traps or bends?
What is the minimum required height for a vent above its point of penetration through any roof covering?
What is 150 mm?
What is the maximum loading per stack for a DN 125 stack with four or more floor levels?
What is 1,000 fixture units?
What must be installed if one or more floors separate the highest and lowest branch pipe connected to the stack?
What is a relief vent?
What is the maximum length for the topmost discharge pipe connection to the stack for fixtures other than combination pan rooms, sinks, slop hoppers, and water closet pans?
What is 2.5 meters?
What is the maximum length allowed for the common discharge pipe from a wall-hung urinal?
What is 10 meters?
what is the maximum number of consecutive floor levels a DN 100 stack can extend when a graded offset is installed."
What is 10?"
Single Stack Modified Systems For domestic or residential buildings, what is the size of the relief vent and cross-vent required for a DN 100 stack handling 16 to 20 consecutive floor levels with relief and cross-vent locations on each floor?
What is 65?
What is the maximum length for the topmost discharge pipe connection to the stack for combination pan rooms, sinks, slop hoppers, and water closet pans?
What is 6 meters?
What is the minimum distance a connection must be made from the bend in a stack that extends no more than five floor levels above the graded offset?
What is 600 mm?
Single Stack Systems For domestic or residential buildings, what is the maximum number of consecutive floor levels a DN 100 stack can handle?
What is 10?
What is the alternative to installing a relief vent when there are multiple floors separating the highest and lowest branch pipes connected to the stack?
What are pressure attenuators as specified in Clause 6.11?
What is the maximum interval between cross-relief vents in stacks that are 20 or more floor levels in height?
What is 10 floor levels?
Single Stack Modified Systems For domestic or residential buildings, what is the maximum fixture unit loading allowed on a DN 100 stack for up to 15 consecutive floor levels, with relief and cross-vent locations on alternate floors?
What is 290?