Chapter 14 HW - Exam 3

Barber shops, beauty salons, pet grooming facilities, and any other establishments that discharge hair and/or other fibrous materials in wastewater must have a hair interceptor.

True

Clean-outs are generally required at the upper end of a building drain.

True

It is important with DWV systems that a larger pipe diameter does not flow into a pipe having a smaller diameter.

True

Most designers try to layout plumbing fixture to line up vertically floor after floor so that a minimum number of stacks will required.

True

How many flush tank domestic water closets can you have drain into a 3" horizontal soil/waste pipe?

2

Typically, residential ejector systems must have the capacity of ejecting solids up to ____ inches in size.

2

You have a horizontal fixture branch that has 11 DFU's (to include 2 water closets), what size would the pipe need to be?

2 1/2"

What is the minimum trap size for a kitchen sin (domestic) with a waste disposal (grinder)?

3

You have a vertical stack of 4 stories that that is carrying 58 DFU's (to include 5 water closets), what size should the total (bottom) of the stack be?

3"

Clean-outs should be no more than ____ feet apart in horizontal drainage lines including the developed length of the clean-out pipe, in horizontal drainage lines of 4 to 10 inches.

??

There cannot be any horizontal branch connections within ___ pipe diameters from the stack as is shown in the International Plumbing Code Section 704.3 because of the hydraulic jump.

??

Using a prevents system, the stack length never exceeds ____ feet in length without either a StackVent or a velocity breaker offset.

??

You are sizing the vent piping for a commercial building with 5 stories and has a total of 150 DFU's (to include 18 water closets). The maximum developed length of the vent system is 190'. What is the required vent stack diameter?

??

You have a building drain that is connected to the building sewer and you have calculated that the pipe must be on a slope of 1/4" per foot to hit the city sewer at the right elevation. What size should the pipe be if it is carrying 200's DFU's?

??

An _________ is a pressure-activated, one-way mechanical venting port used to eliminate the need for experience venting and roof penetrations

AAV

Clean-outs are generally required:

At the junction between the building drain and building sewer At the base of the soil and waste stacks At the upper end of the building drain At each change of direction of the horizontal building drainage system greater than 60 degrees; the total of the fitting between cleanouts shall not exceed 120 degrees

The soil or waste stacks feed into a main horizontal pipe referred to as the _____________________.

Building drain

Pipe ________ run from floor to floor to allow stacks and vents to pass vertically between floors.

Chases

Is the venting system in a horizontal venting pipe serving up to eight fixtures.

Circuit Vents

A ________ is a screw-type fitting with a cap that can unscrew to allow access to the inside of the sanitary drain pipes.

Cleanouts

Is a vent system that allows the distance from trap to vent to be extended infinitely, provided the drain stays in the horizontal orientation and there is a vent somewhere within the horizontal branch.

Combination Drain and Vent

The venting methods that serves two fixtures located on the same floor; it is essentially an individual vent that serves no more than two traps or trapped fixtures.

Common Vents

A _______ is an arbitrarily chosen measure that allows all type of plumbing fixtures to be expressed in common terms; that is a, a fixture having twice the instantaneous drainage flow rate of a second fixture would have a fixture unit value twice as large.

DFU

A stack is referred to as a soil stack when it carries all waste except human waste.

False

S-traps are generally permitted

False

The distance clean-outs should be from each other are set at 50 feet, and it does not matter what size the line is.

False

The purpose of a P-trap is to trap the water so that solids have to have pressure behind them to go down the drain.

False

When placing plumbing in poured concrete slabs, the piping arrangement does not necessarily have to be considered important due to the face that it is going to be covered in concrete.

False

Each plumbing fixture is connected horizontally to the sanitary drainage system by a drain lined called the ________.

Fixture branch

Techniques defined as the installation of a vent pipe for every trap or trapped fixture.

Individual Vents

An _______ is built in as a part of the fixture. In a vitreous china water closet, it is cast as a part of the fixture.

Integral trap

An __________ are passive devices designed into a plumbing system that trap, separate, an retain these toxic or undesirable substances from wastewater before it is discharged into the sewer line.

Interceptors

In community sanitary wastewater, the building sewer may also be known as house or a building connections, or a sanitary sewer ________.

Lateral

The most acceptable type of trap is a called a ______

P-Trap

A ___________ is a product developed to protect buildings of 10 or more stories against unwanted positive pressure generated in the DWV system.

PAPA

Is a continuous pipe of lesser or equal diameter running parallel and alongside the soil and waste stack in a multistory plumbing system. It is used to equalize air pressure within the stack.

Relief Vent

What type system would you use to remove wastewater from a lower elevation much like a sump system?

Sewage Ejector

On larger projects with concrete walls and ceilings, it is usually necessary to provide ________ in the concrete for the pipes to pass through to get from space to space.

Sleeves

A __________ system is a system that combines the drain, stack, branches, and vents into one pipe system by using patented fittings.

Sovent

Fixture branches feed into a vertical pipe referred to as an ________.

Stack

The location of the building drain in the building depends primarily on __________

The elevation of the community sewer line

What is the minimum trap size for a water closet (private) use?

The fixture does not require an external trap for sizing.

A ________ is a U-shaped pipe that catches and holds a small quantity of wastewater that is poured down a fixture drain.

Trap

The building sewer is an extension of the building drain that carries wastewater from the building drain to a community sanitary sewer main or an individual on-site sewage treatment (OSST) system.

True

The _________ side of the system introduces and circulates the air in the system to maintain atmospheric pressure in the lines and ensure adequate gravity flow of wastewater.

Vent system

_______ are pipes that introduce sufficient air into the drainage system to reduce air turbulence (from siphoning or back pressure) and release sewer gasses to the outside.

Vents

The venting method that uses a single vent pipe to provide venting for all the fixtures of one or two bathroom groups.

Wet Vents