Chapter 8 Indirect Waste Piping, Wet-Vented Systems and Special Wastes

25mm

The airgap for drainage shall be not less than ____ between the plumbing fixture, appliance or appurtenance outlet and the rim of the floor sink or receptor.

1.5m to 4.6m

length indirect waste pipes that shall be directly trapped, but not to be vented

4.6 m, 13 mm

Indirect waste pipes less than ____ in length need not be larger in diameter than the drain outlet or tailpiece of the fixture, appliance or equipment served, but in no case less than ____ diameter

0.8m, 0.45m

No standpipe receptor for any clotheswasher shall extend more than ___ meter nor less than ___ above its trap.

0.15m, 0.45m

No trap for any clotheswasher standpipe receptor shall be installed below the floor, but shall be roughed no less than ___ and not more than ___ above the floor.

0.6 meter

Such tailpiece or connections shall be as short as possible and in no case shall exceed ____ for (CW & VS)

4.6 m

branches more than ____ in length shall be separately vented

19mm

The top of the deep seal trap shall have a ___ diameter opening located at the highest point of the trap to serve as a siphon breaker.

102 mm, 13 mm

Concrete sumps, condensers or intercepting tanks shall have walls and bottom not less than ____ thickness, and the inside shall be cement plastered not less than ____ in thickness.

No. 12 U.S. Standard gauge (2.77 mm)

metal condenser shall be not less than _____ thick

152mm

clean water used only for cooling can be drained into the plumbing system through the inlet side of a fixture trap, but only if there's no suitable fixture available to receive it. Such trap connection shall be by means of a pipe connected to the inlet side of an approved fixture trap, the upper end terminating in a funnel shaped receptacle set adjacent, and not less than ___ above the overflow rim.

152 mm

All condensers and sumps shall be properly trapped at the outlet with a deep seal trap extending to within ____ of the bottom of the tank.

152mm

clearance above overflow rim of the fixture drain of cooling medium

152mm

connection from the island vent to other vents is not less than____ above the flood level rim of the fixture served

51mm

Wet-vented pipe section shall not be less than _____ diameter

51mm

cleanouts may not be required on any wet-vented branch serving a single trap when the fixture tailpiece or connection is not less than ____ in diameter

32mm

minimum pipe size for 1 inlet serving not more than 2.8 m3 of refrigeration space;

3.2 mm

Intended to receive the discharge of any fixture where acid or corrosive chemical is placed and each vent pipe connected thereto, shall be constructed of chemical-resistant lead pipe not less than _____ wall thickness

1/2

Outlets shall be taken off from the side in a manner to allow a water line to be maintained that permanently occupies not less than ____ the capacity of the condenser or sump

½ of drain

minimum area of vent in CW & VS

1 pipe size larger or 51mm

minimum wet-vented section larger than the required waste pipes size

2 pipe sizes larger

each waste pipe and each trap in CW &VS shall be at least _____ than any fixture tailpiece or connection served

1, 45 degree

the return bend used under the drainboard for island fixtures shall be a __ piece fitting or assembly of a ___ elbow

60°C

maximum temperature to discharge under pressure directly into drainage system

2%

slope of vent back toward the drain for island fixtures

1 and 2

wet venting is limited to vertical drainage piping receiving the discharge from the trap arm of ___ and ___ FU

4 FU

limit for fixtures that also serves as a vent

Indirect waste receptor

Shall not be installed in any toilet room, closet, cupboard or storeroom nor in any other portion of a building not for general use by the occupants.

indirect waste pipes

pipes from boilers shall discharge through

Indirect wastes

Drinking fountains may be installed with -

Indirect waste

Where a pump is used to discharge waste pool water to the drainage system, the pump discharge shall be installed as an -

Airgap

Appliances, devices or apparatus such as stills, sterilizers and similar equipment requiring water and waste and used for sterile materials shall be drained through an -

Airgap or Airbreak

Air-conditioning condensate waste pipes shall connect indirectly to the drainage system through an -

dishwasher airgap fitting

necessary for the connection of dishwashing machine to a food waste disposer

Chemical or Industrial liquid wastes

Likely to damage or increase maintenance costs on the excreta sewer system.

Chemical wastes

Shall not be discharged into the ground, local sewer or other disposal means without approval of the local Administrative Authority.

Protect the shell

Wearing plates or baffles shall be installed in the tank to -

Bituminous coating

All such metal condensers shall be protected from external corrosion by an approved -

wet-vented

the vertical piping between any 2 consecutive inlet levels shall be considered a _____ section

Uppermost fixture

the vent connection shall be downstream of the -

Beehive strainer

Every indirect waste interceptor receiving discharge containing particles that clogs the receptor drain shall have a readily removable -

“Sacrarium”

_____ also called as waste of holy water and washwater at church altar services must not be discharged into the sanitary drainage system but disposed off directly into the ground.

sumps

no piping or equipment carrying or producing wastes or other discharge under pressure shall be directly connected to any part of the drainage system, except for _____

cast iron, galvanized iron, plastic

material for undiluted condensate waste discharging from a fuel burning condensing appliance

same

all wet-vented fixtures shall be on the ____ floor level

Combination Waste and Vent Systems

Meaning of CW &VS