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Environmental Control > Unit 3 > Flashcards

Unit 3 Flashcards

1
Q

Acid

A

Any Substance with a pH level below 7

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2
Q

Alkaline

A

Substance with pH above 7

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3
Q

Backflow

A

Undesirable reversal of water flow

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4
Q

Corrosion

A

Gradual deterioration of material due to chemical reactions

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5
Q

Fricition

A

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

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6
Q

Potable

A

Water safe to drink

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7
Q

Pressure

A

Forced exerted by a fluid against the walls of a pipe

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8
Q

Soil Pipe

A

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

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9
Q

Stack Vent

A

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

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10
Q

Static Pressure

A

Pressure in a fluid at rest

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11
Q

Trap

A

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

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12
Q

Valve

A

Device that controls flow of fluids through a pipe

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13
Q

ASHRAE

A

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

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14
Q

ASME

A

American Society of Mechanical Engineers

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15
Q

ASSE

A

American Society of Sanitary Engineerings

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16
Q

ASTM

A

American Society for Testing and Materials

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17
Q

GPM

A

Gallons Per Minute

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18
Q

Supply Systems

A

Clean, clear potable water in sealed systems under pressure

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19
Q

Sanitary waste systems

A

Removes contained water

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20
Q

Storm Drains

A

Drain built to carry away excess water

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21
Q

Supply water

A

Clean, clear, potable, suitable for drinking

22
Q

Hardness

A

Groundwater that has absorbed minerals

23
Q

Carcinogens

A

Man-made substances found in groundwater and wells

24
Q

Public Water Treatment

A

Settle out contaminants and add helpful chemicals

25
Q

Pressure (measured)

A

Measured in pounds per inch^2

26
Q

Static head (measured)

A

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

27
Q

Downfeed system

A

Roof-mounted tank supply, for upper building floors

28
Q

Pneumatic Tank System

A

Pressurized tank in basement to serve upper levels

29
Q

Tankless System

A

Requires one or more variable speed pumps to provide required pressure

30
Q

Hot Water Systems

A

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

31
Q

Water Heaters

A

Pressurized warm water

32
Q

Continuous Loop System

A

Hot water continuously pumped around closed loop

33
Q

Insistence/inflow system

A

Cold water heated when called for by faucet

34
Q

Waste Lines

A

Waste from sinks

35
Q

Soil Stack

A

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

36
Q

Cast Iron

A

Sanitary lines inside building

37
Q

Ceramic

A

Sanitary lines outside building

38
Q

Copper/galvanized

A

Vents

39
Q

Plastic (PVS)

A

Pipes used in residential applications

40
Q

Public Systems (Sewage)

A

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

41
Q

Cesspools

A

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

42
Q

Septic tank/leach field

A

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

43
Q

Geotechnical Engineer

A

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

44
Q

Coarse Grain

A

Gravel, sand, more permeable and drains better

45
Q

Fine Grain

A

Silt clay, less permeable and drains poorly

46
Q

Gate Valve

A

Either Fully open or fully closed

47
Q

Globe Valve

A

Turns on and off plus restricts flow when open

48
Q

Check Valve

A

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

49
Q

Angle Valve

A

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

50
Q

Pressure Release Valves

A

Safety devices to keep systems from exploding

51
Q

Surge Arrestors

A

Prevents water hammer (Water stopping mid pipe)

52
Q

Fixture Units (FU)

A

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

Environmental Control (3 decks)

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