sanitary drainnage system

Question 1

A system consists of traps at each fixture,
and fixture branch, stack, and drain pipes that
carry wastewater away from the plumbing
fixtures and out of the building.

Answer 1

SANITARY DRAINAGE

Question 2

sometimes referred to as
the drain, waste, and vent (DWV)
systems
Consists of drainage pipes, vents,
and traps
Removes wastewater and prevents
sewer gases from entering buildings
Gravity-based system for efficient
waste removal

Answer 2

SANITARY DRAINAGE
AND VENT SYSTEM

Question 3

Gravity is the driving force behind
wastewater flow, so the sanitary drainage
system is known as a______________

Answer 3

gravity system.

Question 4

Introduces and circulates air in the system to
maintain atmospheric pressure in the drain lines
and ensure adequate gravity flow of
wastewater

Answer 4

VENT SYSTEM

Question 5

a U-shaped pipe that retains water to block sewer gases

Answer 5

traps

Question 6

most commonly used traps

Answer 6

P-traps

Question 7

traps that is Built into the fixture

Answer 7

Integral Trap

Question 8

traps that is Prohibited due to siphoning
issues

Answer 8

S-Trap & U-Trap

Question 9

Passive plumbing devices that trap, separate, and
retain unwanted substances

Prevent blockages, backups, and contamination of
wastewater

Prevent solidified grease from coating pipes
Reduce the risk of plumbing blockages and
overflows

·Protect wastewater treatment processes
Improve wastewater treatment efficiency and
reduce costs

Answer 9

INTERCEPTORS

Question 10

Used in restaurants, cafeterias, and food
service facilities
Prevent grease, fat, and oil from
clogging sewer lines

Answer 10

GREASE INTERCEPTORS

Question 11

Found in car washes, manufacturing
plants, and vehicle service centers

Answer 11

OIL-SAND INTERCEPTORS

Question 12

Used in barber shops, beauty salons,
and pet grooming facilities

Capture hair and fibrous materials from
wastewater

Prevents clogs caused by accumulated
hair in plumbing systems

Answer 12

HAIR INTERCEPTORS

Question 13

Interceptors are sized based on a minimum __-minute peak wastewater detention
time

Answer 13

30

Question 14

horizontal drain lines connecting plumbing fixtures to the sanitary drainage system

Answer 14

fixture branch

Question 15

slope should be between__ inch to __ inch per foot

Answer 15

1/8 inch to 1/2

Question 16

is a vertical pipe that carries wastewater or vent gases from a multiple plumbing fixtures in a building

Answer 16

stack

Question 17

stack type that carries human waste from toilet

Answer 17

soil stack

Question 18

type of stack that carries wastewater except human waste

Answer 18

waste stack

Question 19

stacks Must be supported at __-ft (_-m) intervals to limit
movement

Answer 19

10-ft (3-m)

Question 20

Horizontal offsets used in stacks over ___ ft (__- m) to
reduce velocity and turbulence

Answer 20

80 ft (24.4 m)

Question 21

Fixture branches must connect to stacks and building
drains at what angle

Answer 21

45deg

Question 22

A designated central area in large
buildings for plumbing

Answer 22

Plumbing core

Question 23

A vertical space for running pipes between
floors

Answer 23

Pipe chase:

Question 24

main horizontal pipe collecting wastewater from soil and waste stacks

Answer 24

building drains

Question 25

buuilding drains extends __ to __ft outside the foudnatiion wall

Answer 25

2 to 5ft

Question 26

slopes of bulding drains ranges from ___ to____ inch per foot

Answer 26

1/16 to 1/2 inch

Question 27

Ideally, wastewater should not flow by gravity into the sewer. T or F

Answer 27

F

Question 28

extension of the building drain

Answer 28

building drain

Question 29

is the primary pipe that conveys wastewater from building to a treatment plant

Answer 29

sanitary main sewer

Question 30

sanitary main sewer typically at least ____ in diameter for gravity-based system

Answer 30

8inch

Question 32

are scew-type fittings with removable caps for accessing the drainage system

Answer 32

cleanouts

Question 33

cleanouts in horizontal pipese

Answer 33

floor cleanlouts

Question 34

clean outs in vertical stacks

Answer 34

wall cleanouts

Question 35

placement for cleanout is no higher than ___ in vertical stacks

Answer 35

48inches

Question 36

Cleanouts should be no more than __ ft apart, including the developed length of the cleanout pipe, in horizontal drainage lines of 4 in or less size.

Answer 36

50

Question 37

Cleanouts should be no more than ___ ft apart, including the developed length of the cleanout pipe, in horizontal drainage lines of sizes over 4 to 10 in.

Answer 37

100

Question 38

Cleanouts should not be more than ___ft apart, including the developed length of the cleanout pipe, in horizontal drainage lines exceeding sizes of 10 in.

Answer 38

150ft

Question 39

The ____________ is defined as the installation of a vent pipe for every trap or trapped fix ture. It is the easiest method of ensuring the preservation of a trap seal but the most costly because of the number of vent pipes required in the venting system

Answer 39

individual venting technique

Question 40

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

Answer 40

common venting

Question 41

The ____________ method uses a single vent pipe to provide venting for all of the fixtures of one or two bathroom groups that are located on the same floor.

Answer 41

wet venting

Question 42

A _________________system is a horizontal venting pipe serving up to eight fixtures

Answer 42

circuit venting

Question 43

A _________________ 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

Answer 43

combination drain and vent system

Question 44

A_________________ 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

Answer 44

relief vent

Question 45

is a pressure-activatesd, one-way mechanical venting port used to eliminate the need for expensive venting roof penetration

Answer 45

air admittance valve

Question 46

A ________________ (PAPA) is a product developed to protect buildings of 10 or more stories against the unwanted positive pressures generated in the DWV system

Answer 46

positive air pressure attenuator

Question 47

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

Answer 47

Sovent system

Question 48

Refers to the process of using a specialized pump, called a "sewage ejector pump, " to forcefully push wastewater from a lower level of a building, like a basement, up to the main sewer line when gravity alone cannot effectively drain it.

Answer 48

SEWAGE EJECTION

Question 49

a sewage ejector can pump solids from __to ___ in (___ to ___ mm) in size or grinds solid wastes before passing them through the ejector.

Answer 49

2 to 4 in (50 to 100 mm)

Question 50

Typically, residential ejector systems must have the capacity of ejecting solids up to ___ in (___ mm) in size

Answer 50

2 in (50 mm)

Question 51

Additionally, these systems are generally rated to a maximum temperature of 180°F (82°C).

Answer 51

180°F (82°C).

Question 52

-a unit of measurement for the amount of wastewater a plumbing fixture generates

Answer 52

Drainage Fixture Units

Question 53

the _____is based on the rate of discharge, how long the fixture is in use, and how often it's used.

Answer 53

DFU

Question 54

Drainage Pipe Sizes: Small projects: ____ to ___ inches. Larger buildings (hotels, apartments, offices): Require wider walls or furred-out areas for bigger pipes.

Answer 54

Small projects: 1½ to 4 inches. Larger buildings (hotels, apartments, offices): Require wider walls or furred-out areas for bigger pipes.

Question 55

Pipes must be placed in the ground before pouring concrete. T or F

Answer 55

TG