National Plumbing Code of Canada

Every fixture shall have what surface requirements?

A smooth, hard, corrosion-resistant surface free of flaws and blemishes that may interfere with cleaning.

How many shower heads may be served by a single shower drain?

6.

Where 2 or more shower heads are served by a shower drain, the floor shall be?

Sloped and the drain located so that water from one head cannot flow over the area that serves another head.

Except for column showers, when a battery of shower heads is installed, the horizontal distance between 2 adjacent shower heads shall be not less than?

750 mm.

A dishwashing sink and a food preparation sink shall not have?

Concealed overflows.

Every trap shall have a trap seal depth of not less than?

38 mm.

The trap seal depth on fixtures draining to an acid waster system shall be a minimum of?

50 mm.

A _____ trap shall not be installed in a drainage system.

Bell.

Except for a floor-mounted service sink, every trap that serves a lavatory, a sink or a laundry tray shall be provided with a?

Cleanout plug.

Except for a floor-mounted service sink, every trap that serves a lavatory, a sink or a laundry tray shall be provided with a cleanout plug or be designed so?

That part of the trap can be removed for cleaning purposes.

The cleanout plug located at the lowest point of the trap that serves a lavatory, a sink or a laundry tray shall be made of what material?

Same material as the trap, except that a cast-iron trap shall be provided with a brass cleanout plug.

A drum trap shall not be used as a fixture trap unless?

Its required to serve as an interceptor and access for servicing is provided.

Every interceptor shall be designed so that?

It can be readily cleaned.

Every grease insterceptor shall be designed so that it does not become _____, and not have a ______>

Air bound. Water jacket.

A T fitting shall not be used in a drainage system, except to ?

Connect a vent pipe.

A cross fitting shall not be used in a?

Drainage system.

A single or double sanitary T fitting shall not be used in a?

Nominally horizontal soil-or-waste pipe.

Since a single or double sanitary T fitting shall not be used in a nominally horizontal soil-or-waster pipe what fitting shall be used?

A single or double wye with a 45.

When can a single sanitary T fitting be sued in a nominally horizontal soil-or-waste pipe?

May be used to connect a vent pipe.

A double sanitary T fitting shall not be used to connect the trap arms of?

Back outlet water closets installed back-to back or 2 urinals where no cleanout fitting is provided above the connection.

90 elbows of 4" or less whose centre-line radius is less than the size of the pipe shall not be used to join?

2 soil-or-waste pipes.

For sanitary drainage systems of 4" or less, 90 elbows shall only be permitted to?

Change the direction of piping from horizontal to vertical in direction of flow, where a trap arm enters a wall, on water closet going from vertical to horizontal as well as on horizontal by itself.

Concrete fittings fabricated on the site from lengths of pipe shall?

Not be used.

Concrete pipe shall not be used where?

Above ground inside a building.

Vitrified clay pipe and fittings shall not be used except for?

An underground part of a drainage system.

Polyethylene water pipe shall not be used except for?

A water service pipe.

Transition solvent cement shall only be used for joining?

An ABS drainage system to a PVC drainage system.

Cast-iron soil pipe and fittings shall not be used in a?

Water system.

Threaded cast-iron drainage fittings shall not be used in a?

Water system.

Screwed cast-iron water fittings used in a water system shall be?

Cement-mortar lined or galvanized.

Screwed cast-iron water fittings shall not be used in a?

Drainage system.

Screwed malleable iron water fittings used in a water system shall be?

Cement-mortar lined or galvanized.

Screwed malleable iron water fittings shall not be used in a?

Drainage system.

Galvanized steel is permitted to be used where?

In a drainage system or a venting system above ground inside a building.

Galvanized steel pipe and fittings shall not be used in a water distribution system except?

In buildings of industrial occupancy or for the repair of existing galvanized steel piping systems.

Corrugated steel pipe shall only be used where?

Underground outside a building in a storm drainage system.

A sheet metal leader shall not be used except where?

Above ground outside a building.

Brass or bronze threaded water fittings shall not be used in a?

Drainage system.

Copper tube shall not be used for?

The fixture drain or the portion of the vent pipe below the flood level rim of a flush-valve-operated urinal.

Where can K & L hard temper copper be used?

Everywhere except for water service pipe and underground water distribution systems.

Where can K & L soft temper copper be used?

Water service pipe, underground and above-ground water distribution systems.

Where can M hard temper copper be used?

Above-ground water distribution systems, above-ground drainage systems and above-ground venting systems.

Where can M soft temper copper be used?

No where.

Where can DWV copper be used?

Above-ground drainage systems and above-ground venting systems.

Solder-joint fittings for drainage systems shall not be used in a?

Water system.

Lead waste pipe and fittings shall not be used in a?

Water system or as a building sewer.

When there is a change in size of a lead closet bend, the change shall be in the?

Vertical section of the bend or made in a manner that prevents the retention of liquid in the bend.

Cement mortar shall not be used for?

Jointing.

Solders and fluxes having a lead content in excess of 0.2% shall not be used in a?

Potable water system.

When screws, bolts, nuts and washers are used to connect a water closet to a water closet flange, to anchor the water closet flange to the floor or to anchor the water closet to the floor they shall be made of?

Corrosion-resistant materials.

Every plug, cap, nut or bolt that is intended to be removable from a ferrous fitting shall be of a?

Non-ferrous material.

A clean-out fitting that, as a result of normal maintenance operations, cannot withstand the physical stresses of removal and re-installation or cannot ensure a gas-tight seal shall?

Not be installed.

A saddle hub or fittings shall not be installed in?

Drainage, venting or water systems.

All mixing valves supplying shower heads shall be of what type?

Pressure-balanced, thermostatic, or combination pressure-balanced/thermostatic type.

All mixing valves supplying shower heads shall be capable of?

Maintaining a water outlet temperature that does not exceed 49 C, and limiting thermal shock.

The temperature of water discharging into a bathtub shall?

Not exceed 49 C.

The orifice of every drinking fountain bubbler shall?

Be of the shielded type and direct the water upward at an angle of 45.

Every drinking fountain bubble shall include a means of?

Regulating the flow to the orifice.

Bubblers shall be installed only on?

Drinking fountains.