Pre-floor AS/NZ3500.2 Plumbing

What are the two useful reference documents in the Marley manual

• NZBC E1

• AS/NZS5601.2:2013

• NZBC G13

• NZBC G12

• AS/NZS 3500.2:2003

What is missing off this picture?

• It should have a grate on the gully trap

• It doesn't have a hose tap charging it

• Nothing, it is correct

• The vent pipe isn't allowed to connect here

Choose two design flexibilities that AS/NZS3500 offers over traditional G13 systems

• Floor drains can be used as shower wastes.

• External gully traps are maximized.

• The number of fixture traps can be increased

• The size of terminal vents is reduced.

What is the riser boss junction used for?

• Acts as a spacer before the waste pipes enter the gully dish

• For a cleaning access point if the gully gets blocked

• The riser boss junction takes the individual fixture waste pipes into the gully riser.

• The riser boss junction can only take a maximum of 2 fixture waste pipes into the gully riser.

• The riser boss junctions must sit vertically between the floor grate and the gully

  trap.

Apart from a basin, what other fixture must be trapped even if it discharges through a floor waste gully or directly connected to a drain or stack.

• WC pan

• Bidet

• Bath

• Water feature fountain

• Drinking fountain

What is the name of this general layout

• G13 pre-floor slab

• Roll over stack system

• Ground Floor Drainage

• Single stack system

Can a kitchen sink waste discharge to a FWG

• No

• Yes, only if it is connected to the main drain

• No, not normally but only if it has a vent

With the AS/NZS3500 system it is possible to site an appliance 12.5 meters from the main drain using:

• A fixture trap connected to a FWG will give an additional 2.5m when measured from the wier of the fixture trap

• A vent pipe off the FWG

• Larger size pipes under the slab and bushing at floor level

• A sealed clean out only