4.2

Question 1

extension of the building drain

carries wastewater to the community sewer main or on - site sewage treatment system

also called house or building connection, or _______________

Answer 1

building sewer, sanitary sewer lateral

Question 2

SLOPE REQUIREMENT OF BUILDING SEWER

Slopes range from ________ to________ in per foot.

______ in per foot slope is used only in large buildings with hundreds of fixtures. Proper slope prevents blockages and allows smooth flow.

Answer 2

1/16, 1/2

Question 3

Is the primary pipe that conveys waste water from buildings to a treatment plant.

Typically, at least ___ inches (200 mm) in diameter for gravity-based systems

Answer 3

Sanitary Main Sewer, 8

Question 4

These are screw type fittings with removable caps for accessing the drainage system

Answer 4

cleanouts

Question 5

There are two types of cleanout

Answer 5

floor cleanouts and wall cleanouts

Question 6

Placement for cleanout is no higher than _____ inches in vertical stacks

Answer 6

48

Question 7

Requirement of Cleanouts

The ________ of soil and waste stacks

Direction changes over ____

Junction of building drain and sewer ( __________ ft from foundation)

Answer 7

base

60 degrees

2-4

Question 8

CLEANOUT SPACING

They should not be no more than _____ ft apart, including the developed length of the cleanout pipe, in horizontal drainage lines of ___ in or less size.

Answer 8

50, 4

Question 9

CLEANOUT SPACING

Cleanouts should be no more than _____ ft apart, including the developed length of cleanout pipe, in horizontal drainage lines of sized over ____ to ____ in.

Answer 9

100, 4, 10

Question 10

CLEANOUT SPACING

Cleanouts should be no more than _____ ft apart, including the developed length of cleanout pipe, in horizontal drainage lines exceeding sizes of ______

Answer 10

150, 10

Question 11

CLEANOUT SIZE BASED ON PIPE DIAMETER

1.5 to 2 inches: _______ cleanout

2.5 to 3 inches: _______ cleanout

4 inches or larger: _______ inch cleanout

Answer 11

1.5
2.5
3.5

Question 12

_____ are pipes that introduce sufficient air into the drainage system to reduce air turbulence and to release sewer gases to the outside

Answer 12

Vents

Question 13

The primary pupose of venting is to protect the ______________.

Answer 13

trap seal

Question 14

Without a vent, as water drains from a fixture, the moving wastewater tends to ______ water from the trap of another ficture as it falls through the drain pipes

Answer 14

siphon

Question 15

TYPES OF VENTING MODELS

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 15

common vents, common venting

Question 16

TYPES OF VENTING MODELS

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

the vent pipe for the ___________ typically serves as the vent for the other fixtures in the bathroom

Answer 16

wet vents, wet venting, lavatory

Question 17

TYPES OF VENTING MODELS

The ___________________ technique is defined as the installation of a vent pipe for every trapped fixture. It is the easiest method of ensuring the preservaion of a trap seal but the most costly because of the number of vent pipes requried in the venting system

Answer 17

individual vents

Question 18

A ______________ system is a horizontal venting pipe serving up to eight fixtures

Each fixture must be connected to a single horizontal drain in this technique

The vent connection is made between two upstream fixtures that is, those fixtures connected to the horizontal drain pipe that are the farthest awat from the vent stack

Answer 18

Circuit Vents

circuit venting

Question 19

TYPES OF VENTING METHODS