CH 8 - INDIRECT WASTE PIPING, WET-VENTED SYSTEMS, AND SPECIAL WASTES

drain pipe; indirect waste pipes; airbreak

No evaporative cooler, air washer or similar air conditioning equipment shall have any _____ in connection therewith, directly connected to any soil, waste and vent pipe. Such equipment shall be drained by means of ___________ as defined in Chapter 2 of this Code, and all wastes drained by them shall discharge through an _____ into an open floor sink or other approved type receptor properly connected to the drainage system.

indirect waste pipes; airgap

No cold storage room, refrigerator, cooling counter, compartment, receptacle, appurtenance or device used for the storage or holding of food or drink and no dishwashing or culinary sink in any food preparation room used for soaking, washing or preparing ready-to-serve food shall have any drain in connection therewith directly connected to any soil, waste or vent pipe. Such equipment or fixtures shall be drained by means of ______, as defined in Chapter 2 of this Code; and all wastes drained by them shall discharge through an ______ into an open floor sink or other approved type receptor properly connected to the drainage system.

airbreak; full airgap

Cooling and air-conditioning equipment may be separated by an _____, but all food equipment shall be separated from the drainage system by a ______.

25 mm

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.

outside air

No vent from indirect waste piping shall combine with any excreta connected vent, but shall extend separately to the _____.

1.5 meters; 4.6 meters; vented

Indirect waste pipes exceeding _____ but less than _____ length shall be directly trapped, but such traps need not be _____.

4.6 meters; drain outlet; tailpiece; 13 mm

Indirect waste pipes less than ________ in length need not be larger in diameter than the _____ or _____ of the fixture, appliance or equipment served, but in no case less than _____ in diameter.

cleanouts

Angles and changes of direction in such indirect waste pipes shall be provided with ____ to pemit flushing and cleaning.

standpipe receptor; 0.8 meter; 0.45 m

No ______ for any clothes washer shall extend more than _____ nor less than ____ above its trap.

15 cm; 45 cm

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

indirect waste receptor; standpipes

No _______ shall 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 thereof, except that _____ for clotheswasher may be installed in toilet and bathroom areas when the clotheswasher is installed in the same room.

beehive strainer

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

Indirect waste connections

_______ shall be provided for drains, overflows or relief vents from the water supply system;

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 _____.

indirect waste pipes; open receptor

Appliances, devices, equipment or other apparatus not regularly classified as plumbing fixtures equipped with pumps, drips or drainage outlets may be drained by ______ discharging into an approved-type _____.

lavatory tailpiece

When the condensate waste from air conditioning coils is discharged by direct connection to a ______ or to an approved accessible inlet on a bathtub overflow, the connection shall be located in the area controlled by the same person controlling the air conditioned space.

undiluted condensate waste

When ______ from a fuel burning condensing appliance is discharged into the drainage system the material in the drainage system shall be cast iron, galvanized iron, plastic or other materials approved for this use.

brass

When the above condensate is discharged to an exposed fixture tailpiece and trap such tailpiece and trap may be ______.

dishwasher airgap

No domestic dishwashing machine shall be directly connected to a drainage system of food waste disposer without the use of an approved ________ fitting on the discharge side of the dishwashing machine.

flood level (FL)

Listed airgaps shall be installed with the ______ marking at or above the flood level of the sink or drainboard, whichever is higher.

inlet side

When permitted by the Department having jurisdiction, clean running water used exclusively as a cooling medium in an appliance, device or apparatus, may discharge into the drainage system through the _____ of a fixture trap in the event that a suitable fixture is not. available to receive such discharge.

152 mm

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 of the future.

indirect wastes

Drinking fountains may be installed with ______.

steam pipe; 60°C

No _____ shall be directly connected to any part of a plumbing or drainage system, nor shall any water having a temperature above ____ be discharged under pressure directly into any part of a drainage system.

indirect waste piping

Pipes from boilers shall discharge by means of _____ as determined by Administrative Authority or the boiler manufacturer's recommendations.

open or closed condenser ; intercepting sump

Such pipes may be indirectly connected by discharging into an _______ or _______ of approved type that will prevent the entrance of steam or such water under pressure into the drainage system.

vent

All closed condensers or sumps shall be provided with a ___ taken off from the top and extended separately, full size above the roof.

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.

19 rnm

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.

Outlets; 1/2

_____ 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

water line

All inlets shall enter above the _____.

Wearing plates

_____ or baffles shall be installed in the tank to protect the shell.

Table 8-1

The sizes of the blowoff line inlets, the water outlets and the vent shall be as shown in _____.

open sump

The contents of condensers receiving steam or hot water under pressure must pass first through an _____ before entering the drainage system.

102 mm; 13 mm

Sumps, condensers or intercepting tanks constructed of concrete shall have walls and bottom not less than ______ thickness, and the inside shall be cement plastered not less than _____ in thickness.

No. 12 ; 2.77 mm; bituminous coating

Condensers constructed of metal shall be not less than _____ U.S. Standard gauge (_____ thickness) and all such metal condensers shall be protected from external corrosion by an approved _____.

twice ; 102 mm

Sumps and condensers shall be provided with suitable means of access for cleaning and shall contain a volume of not less than ____ the volume of water removed from the boiler or boilers connected thereto when the normal water level of such boiler or boilers is reduced not less than ____.

chemical-resistant glass-lined; silicon iron; 3.2 mm; ceramic glazed; vitrified clay

Each waste pipe receiving or 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 _______ pipe, high ______ pipe, lead pipe not less than _____ wall thickness, an approved type of ______ or unglazed _______ or other approved corrosion resistant rnaterials.

clearance

Whenever practicable, all piping shalt be readily accessible and installed with the maximum of _____ from other services.

chemical vent

No ______ shall be connected or intersect vents for other services.

Wet venting

______ is limited to vertical drainage piping receiving the discharge from the trap arm of 1 and 2 fixture unit. Fixtures that also serves as a vent for not to exceed 4 fixtures.

wet-vented; continuous vent

All _____ fixtures shall be on the same floor level, provided further, that fixtures with a ______ discharge into a wet vent shall be on the same level as the wet-vented fixtures.

wet-vented section

The vertical piping between any 2 consecutive inlet levels shall be considered a ________.

1 pipe; 1 pipe; 51 mm

Each wet-vented section shall be a minimum of _____ size larger than the required minimum waste pipe size of the upper fixture or shall be _____ size larger than the required minimum pipe size for the sum of the fixture units served by such wet-vented section, whichever is larger, but in no case less than ____ in diameter.

Common vent sizing

______ shall be the sum of the fixture units served but in no case smaller than the minimum vent pipe size required for any fixture served, or by Section 904.

island sinks; roughed-in; drainboard; horizontal sink

Traps for _____ and similar equipment shall be _____ above the floor and may be vented by extending the vent as high as possible, but not less than the _____ height and then returning it downward and connecting it to the ______ drain immediately downstream from the vertical fixture drain.

returned vent; wye-branch; foot vent; 152 mm

The ______ shall be connected to the horizontal drain through a _____ fitting and shall, in addition, be provided with a _____taken off the vertical fixture vent by means of a wye-branch immediately below the floor and thence extending the vent line to the nearest partition and then through the roof to the open air or may be connected to other vents at a point not less than ____ above the flood level rim of the fixtures served.

2 % or 21 mm/m

Drainage fittings shall be used on all parts of the vent below the floor level and such a vent line shall have a minimum slope of ______ back toward the drain where it is connected shall be maintained.

return bend; 1 piece; 45 degree

The _____ used under the drainboard shall be a ____ fitting or an assembly of a ____ elbows.

no other

The island sink drain. upstream of the returned vent, shall serve _____ fixtures.

foot vent

Accessible cleanouts shall be installed in the vertical portions of the ____ and the waste at floor level.

Combination waste and vent systems (CW & VS)

_____________ shall be permitted only where structural conditions preclude the installation of conventional systems as otherwise prescribed by this Code.

vent or vents

Each CW & VS as defined in Sub-Section 104.11 of Section 104, shall be provided with a ______ adequate to assure free circulation of air.

4.6 meter

Any branch more than _____ in length shall be separately vented in an approved manner.

½

The minimum area of any vent installed in a CW & VS shall be at least _____ the inside cross sectional area of the drain pipe served.

downstream

The vent connection shall be ______ of the uppermost fixture.

"Sacrarium"; ground

_________ waste of holy water and washwater at church altar service! must not be discharged into the sanitary drainage system but disposed off directly into the _________.

air gap

Water lifts, expansion tanks, cooling jackets, sprinkler systems, drip or overflow pans or similar devices which discharge clear wastewater into the building drainage system shall discharge through an indirect waste by means of an ______.

indirect waste

Pipes carrying wastewater from swimming or wading pools, including pool drainage and backwash from filters, and water from promenade drains which serve walks shall be installed as an _____.

indirect waste

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

2.8 m3; 4 to 12m3; 13 to 36 m3

The indirect waste lines carrying refrigeration waste shall not be smaller than shown in the following pipe size schedule:

• 32 mm - 1 inlet serving not more than ____ of refrigeration space

• 51 mm - ______, 32 inlets or the equivalent refrigeration space

• 76 mm - ____, 32 mm inlets or the equivalent refrigeration space

indirect waste

if discharged into the drainage system any evaporative cooler, airwasher, or similar air-conditioning equipment shall be drained by means of an _____ pipe.

independent; Table 8-2

Air-conditioning condensate waste pipes shall be _____ of any drainage and waste system and shall not be smaller than shown in _____.

10.5 mm/m or 1%; 3/4

The capacity of waste pipes assumes a ______ slope, with the pipe running ___ full at the following conditions:

airgap; airbreak

Air-conditioning condensate waste pipes shall connected indirectly to the drainage system through an ____ or ______