Tyler's Plumbing Final Exam

Waste receptors used for indirect waste from chemicals and other corrosive wastes must be made of _______ materials.

Non-Corrosive

_______ pipe normally is joined by heat fusion.

Polyethylene

True or False: A bi-level drinking fountain has separate basins and bubblers installed at two different levels.

True

True or False: A control valve is required at each water-supplied piece of mechanical equipment.

True

True or False: A garderobe was essentially a waste shoot from upper areas of the castle used to deposit excrement into a cesspit below.

True

A _______ bend is used with a wye to correctly make a perpendicular horizontal-to-horizontal connection with one drain line above the other drain line and the wye in a 45° position on its back.

1/6

The EPA estimates that water loss through leaks in a water distribution system is an average of _______ of total water use.

10% to 20%

Pipe 1" and larger should be supported horizontally every _______.

12'

A cleanout is required by the 2015 UPC for each aggregate horizontal change of direction exceeding ________.

135°

Trap arms 3" (76 mm) and larger may change direction up to _________.

135°

A water closet with a 1.6 gallon per flush (gpf) (6 Lpf) gravity tank will have a DFU value of _______ DFUs for private use.

3

A plumbing ________ is a manufactured device, or prefabricated, or an on-the-job assembly os component parts, which is an adjunct to the basic piping system and plumbing fixture.

Appurtenance

_______ is the drawing out by suction of a liquid or gas.

Aspiration

______ water is wastewater from fixtures that come in contact with or contains fecal matter or food solids.

Black

A _____ valve is used to control fluid flow and consists of a rotating disc that seats against a resilient material within the valve body.

Butterfly

A(n) _______ is a support system that is completely concealed in the wall and supports the load of the fixture by means of a suitable face plate and base support firmly anchored to the floor.

Carrier Fitting

__________ is the volume rate of demand for water imposed on the water-distributing system or any branch thereof by the use of water, as by plumbing fixtures.

Demand Load

A water _______ is a plumbing fixture that is manually controlled by the user for the purpose of dispensing potable drinking water into a receptacle such as a cup, glass, or bottle.

Dispenser

_________ is the ability of a substance to assume its original characteristics after the removal of a force that has been applied.

Elasticity

Floor drains are primarily used as ________ fixtures.

Emergency

True or False: A check valve is specifically required on the discharge piping from water supply tanks at or near the tank and at each water service either at the discharge side of a water service meter or at some point in the unmetered water service.

False

True or False: A plumbing appurtenance is a special class of devices or equipment that is intended to perform a special plumbing function.

False

True or False: A product that bears the "classified" or "shield" label has demonstrated compliance with the specific standard or standards to which it was tested.

False

True or False: A trap weir is the depth of water in a fixture that prevents the passage of noxious odors but allows the free flow of wastewater

False

True or False: A vanity lavatory is a lavatory in which the basin mounts on top of the countertop.

False

True or False: An air break is a device designed and installed to separate and retain deleterious, hazardous, or undesirable matter from normal wastes and permit normal sewage or liquid wastes to discharge into the disposal terminal by gravity.

False

True or False: Black water includes wastewater from bathtubs, showers, lavatories, clothes washers, and laundry tubs.

False

True or False: Branch connections are not allowed within 1' of vertical offset fittings.

False

True or False: Gravity circulation is the circulation of water based on the use of a mechanical pump.

False

True or False: PVC has a maximum service temperature of 100° F (38.7°C)

False

True or False: PVC pipe has no minimum width for a trench other than that needed to properly make pipe connections.

False

True or False: The goal of most of Dr. Roy B. Hunters research was to eliminate the very serious problem of cholera.

False

True or False: The wastewater discharged from the bathtub, and other non-sanitary plumbing fixtures, is identified as black water.

False

True or False: When a stack offsets at more than 30° from the vertical, the offset becomes a horizontal pipe.

False

True or False: private water systems serve no more than 60 people.

False

True or False: the manufacture of nominal pipe sizes from 1/3" to 12" (3mm to 305mm) is based on the outside diameter (OD) of the pipe.

False

True or False: the water supply source is the part of the plumbing system that delivers water to plumbing fixtures and appliances installed in or outside a building.

False

A(n) _______ vent is a pipe installed to vent a fixture trap and that connects with the vent system above the fixture served or terminates in the open air.

Individual

The ________ is the lowest point on the interior of a horizontal pipe.

Invert

_______ is the discharge from any fixture, appliance, area, or appurtenance that does not contain human or animal waste (fecal) matter.

Liquid Waste

A _______ is an assembly of pipe, unions, and/or flanges that permit a meter to be removed without interrupting water service.

Meter Yoke

A _______ trap is installed on most fixtures requiring an external trap whose outlet connects to its fixture drain at a wall, such as sinks, lavatories, and drinking fountains.

P Trap

_______ water is suitable for drinking, culinary, and hygienic purposes.

Potable

An increase in the volume of water produced by thermal expansion creates a corresponding rise in _______.

Pressure

Identification of gray water discharge pipes is normally done with _______ pipe or pipe markers.

Purple

According to the UPC, "_______" is having a direct access without the necessity of removing a panel, door, or similar obstruction.

Readily Accessible

The most common _______ are floor sinks and floor drains, but an open and trapped waste pipe used to collect indirect waste, such as clothes washer standpipe, can also be used.

Receptors

______ pressure is the pressure available under full flow conditions.

Residual

______ plumbing fixtures include water closets, bidets, urinals, and clinic sinks.

Sanitary

The purpose of an automatic compensating mixing value is to prevent _______ due to reduction of cold water pressure or lowered temperature at the fixture fitting.

Scalding

The pump used to lift sanitary waste from plumbing fixtures to a higher elevation is called a _______.

Sewage Ejector

_______ refers to natural precipitation that has not fallen on a roof or other catchment area.

Storm Water

True or False: A pipe segment is the length of piping from one branch fitting to the next branch fitting or the fixture branch serving a fixture or appliance outlet.

True

True or False: A septic tank should be inspected at least yearly to determine the amount of sludge at the bottom of the tank and width of the scum layer at the top of the effluent.

True

True or False: An increaser should be used in the drainage system only to increase the size of pipe, not to decrease the size of pipe in the direction of wastewater flow.

True

True or False: An indirect waste pipe is a drain pipe that does not connect directly into the building's drainage system but flows into a drain system via an air break or air gap above a receptacle, interceptor, vented trap, or vented and trapped fixture.

True

True or False: Besides an air gap, a common type of back flow prevention device is an AVB.

True

True or False: Emergency plumping fixtures are categorized by the part of the body the fixture is intended to provide relief for.

True

True or False: Freshwater is naturally occurring water, which is 2.5% of global water such as lakes, rivers, streams, ground water, and rain water.

True

True or False: Heating water is estimated to consume 10% to 25% of the total energy used in an average home.

True

True or False: Lavatories are categorized by the building occupant use, their shape, size, and color, whether they have any special integral features, and by method of installation.

True

True or False: Only one water closet may discharge into a stack on a 3" horizontal branch of 18" or shorter in length if the branch is connected to the stack by a wye type fitting.

True

True or False: Piping should not be directly embedded in concrete.

True

True or False: Proper plumbing fixture and appliance installation occurs in two phases: rough-in and finish.

True

True or False: Siphonage is caused by the effects of self-siphonage and pressure fluctuations, including aspiration and back pressure.

True

True or False: There are eight urinal design: siphon-jet, blow out, wash out, wash down, stall, trough, non water, and hybrid.

True

True or False: There are no specific plumbing code requirements for the setting of drinking fountains other than to follow the manufacturer's installation instructions.

True

True or False: Thermoelectric power and irrigation remained the two largest uses of water in 2010, and total withdrawal for both were less than in 2005.

True

True or False: To protect a building water supply system from the effects of thermal expansion in a closed piping system, an expansion tank should be installed on the cold water supply side of the water heater ahead of any circulation line connections.

True

Water hammer arrestors come in _______ general types.

Two

The two national model plumbing codes are the _______.

UPC an IPC

A(n) _______ is a device used to regulate fluid (liquid or gas) flow within a system.

Valve

A water meter is a mechanical device used to measure water _______.

Volume

A plumping appliance with only potable water supply connections is a _______.

Water Heater

A _______ is an area, such as a bathroom or other fixture group area, where multiple fixtures are installed close to each other.

Zone