Unit 3

Question 1

Acid

Answer 1

Any Substance with a pH level below 7

Question 2

Alkaline

Answer 2

Substance with pH above 7

Question 3

Backflow

Answer 3

Undesirable reversal of water flow

Question 4

Corrosion

Answer 4

Gradual deterioration of material due to chemical reactions

Question 5

Fricition

Answer 5

Resistance to movement between the flow of water and inside of pipes

Question 6

Potable

Answer 6

Water safe to drink

Question 7

Pressure

Answer 7

Forced exerted by a fluid against the walls of a pipe

Question 8

Soil Pipe

Answer 8

Pipe that carries wastewater from toilets to building’s sewage system

Question 9

Stack Vent

Answer 9

Upper Portion of a waste or soil stack (vertical) that extends above the roofline to allow gases from the drainage system to escape safely

Question 10

Static Pressure

Answer 10

Pressure in a fluid at rest

Question 11

Trap

Answer 11

U-Shaped Pipe section designed to retain a small amount of water to prevent sewer gases from entering buildings through plumbing fixtures

Question 12

Valve

Answer 12

Device that controls flow of fluids through a pipe

Question 13

ASHRAE

Answer 13

American Society of Heat, Refrigerating, and Air-Conditioning Engineers

Question 14

ASME

Answer 14

American Society of Mechanical Engineers

Question 15

ASSE

Answer 15

American Society of Sanitary Engineerings

Question 16

ASTM

Answer 16

American Society for Testing and Materials

Question 17

GPM

Answer 17

Gallons Per Minute

Question 18

Supply Systems

Answer 18

Clean, clear potable water in sealed systems under pressure

Question 19

Sanitary waste systems

Answer 19

Removes contained water

Question 20

Storm Drains

Answer 20

Drain built to carry away excess water

Question 21

Supply water

Answer 21

Clean, clear, potable, suitable for drinking

Question 22

Hardness

Answer 22

Groundwater that has absorbed minerals

Question 23

Carcinogens

Answer 23

Man-made substances found in groundwater and wells

Question 24

Public Water Treatment

Answer 24

Settle out contaminants and add helpful chemicals

Question 25

Pressure (measured)

Answer 25

Measured in pounds per inch^2

Question 26

Static head (measured)

Answer 26

Measured in inches/feet of water supported by a given pressure

Question 27

Downfeed system

Answer 27

Roof-mounted tank supply, for upper building floors

Question 28

Pneumatic Tank System

Answer 28

Pressurized tank in basement to serve upper levels

Question 29

Tankless System

Answer 29

Requires one or more variable speed pumps to provide required pressure

Question 30

Hot Water Systems

Answer 30

Where cold water is supplied to pipe fixtures or storage tank to heat

Question 31

Water Heaters

Answer 31

Pressurized warm water

Question 32

Continuous Loop System

Answer 32

Hot water continuously pumped around closed loop

Question 33

Insistence/inflow system

Answer 33

Cold water heated when called for by faucet

Question 34

Waste Lines

Answer 34

Waste from sinks

Question 35

Soil Stack

Answer 35

Large Pipe which all soil and waste lines empty, open to outside

Question 36

Cast Iron

Answer 36

Sanitary lines inside building

Question 37

Ceramic

Answer 37

Sanitary lines outside building

Question 38

Copper/galvanized

Answer 38

Vents

Question 39

Plastic (PVS)

Answer 39

Pipes used in residential applications

Question 40

Public Systems (Sewage)

Answer 40

Settle solids, treat liquid, return to supply, sludge dried and placed in landfill or used as fertilizer

Question 41

Cesspools

Answer 41

Underground chamber, porous walls and floor, once full dig another, typically outlawed

Question 42

Septic tank/leach field

Answer 42

Solids settle in tank, water flows to series of pipes, discharge water to sand for filtering

Question 43

Geotechnical Engineer

Answer 43

Develops a "Soil profile" or vertical section to show layers from the surface to bedrock

Question 44

Coarse Grain

Answer 44

Gravel, sand, more permeable and drains better

Question 45

Fine Grain

Answer 45

Silt clay, less permeable and drains poorly

Question 46

Gate Valve

Answer 46

Either Fully open or fully closed

Question 47

Globe Valve

Answer 47

Turns on and off plus restricts flow when open

Question 48

Check Valve

Answer 48

Prevents water from moving back and contaminating system (Backflow preventer)

Question 49

Angle Valve

Answer 49

Used in fixtures such as sinks, showers, dishwashers, etc.

Question 50

Pressure Release Valves

Answer 50

Safety devices to keep systems from exploding

Question 51

Surge Arrestors

Answer 51

Prevents water hammer (Water stopping mid pipe)

Question 52

Fixture Units (FU)

Answer 52

Used for pipe sizing and assumes all fixtures will be used at the same time