Ut Basic Chapter 8 Sewage Study

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8-1. How many feet away from the structure’s foundation should the house sewer extend? 1. 3 to 5 2. 1 to 3 3. 5 to 8 4. 8 to 10

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1. 3 to 5

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8-2. Which sanitary system sewer connects to a branch and has no common sewer tributary? 1. House 2. Lateral 3. Main 4. Branch

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2. Lateral

Front 3

8-3. Which sanitary system sewer contains many branches, providing an outlet for a large area? 1. Lateral 2. Forced 3. Trunk 4. Interceptor

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3. Trunk

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8-4. Forced main piping carrying sewage under pressure to a pumping station requires a minimum velocity speed of what value, in fps? 1. 1 2. 2 3. 3 4. 4

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3. 3

Front 5

8-5. Which sanitary system sewer contains the treatment plant line leading to a final disposal point? 1. Outfall 2. Trunk 3. Branch 4. Outlet

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1. Outfall

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8-9. Shaft type manholes can be constructed to a depth of how many feet? 1. 130 2. 140 3. 150 4. 160

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1. 130

Front 7

8-10.When a 36-inch sewer line is utilized, how many feet apart are manholes placed? 1. 300 2. 500 3. 600 4. 800

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2. 500

Front 8

8-11.Why are storm drainage systems separated from sanitary systems? 1. Storm drainage systems are normally smaller in size. 2. Storm drainage requires treatment. 3. Storm and surface drainage do not require treatment. 4. Combining systems would be too expensive.

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3. Storm and surface drainage do not require treatment.

Front 9

8-12.Within how many feet from sewer lines are tree roots a prevalent problem? 1. 100 2. 200 3. 300 4. 400

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1. 100

Front 10

8-16.Which waste water treatment is used to convert suspended materials into a form more readily separated from the water being treated? 1. Preliminary 2. Shock 3. Primary 4. Secondary

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4. Secondary

Front 11

8-17.What term is used to refer to the settable solids separated from liquids during processing? 1. Sludge 2. Baffle 3. Weir 4. Floatables

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1. Sludge

Front 12

8-18.Which material is designated as domestic organic waste? 1. Vegetable packing waste 2. Fecal discharges 3. Salt brine discharges 4. Meat packing waste

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2. Fecal discharges

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8-19.What substance will decrease as a result of an increase of wastewater in a body of water? 1. Hydrogen 2. Bacteria 3. Oxygen 4. Pathogenic agents

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3. Oxygen

Front 14

8-20. The total residue of solid waste contained in wastewater is known as                solids. 1. dissolved 2. settable 3. floatable 4. total

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4. total

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8-21.(True or False) Organic material which includes vegetable matter is a type of solid material found in wastewater. 1. True 2. False 22.

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1. True

Front 16

8-22.Cesspools must be covered with plank of what minimum thickness, in inches, for prevention of breeding flies? 1. 1 2. 2 3. 3 4. 4 4

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2. 2

Front 17

8-23.How many feet apart should cesspools be constructed? 1. 5 2. 10 3. 20 4. 25

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3. 20

Front 18

8-24.When cesspools are located in fine sand, what can be done to increase the leaching field? 1. Add more stones to the bottom of cesspool. 2. Surround the walls with medium sand. 3. Provide a trapped outlet at the bottom of cesspool. 4. Surround the walls with graded gravel.

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4. Surround the walls with graded gravel.

Front 19

8-25.Soils that require more than 30 minutes for a fall of how many inches are unsatisfactory for leaching? 1. 1 2. 2 3. 3 4. 4

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1. 1

Front 20

8-26.The bottom of the inlet sewer should be how many inches above the water level of the tank? 1. 2 2. 3 3. 5 4. 7

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2. 3

Front 21

8-27.When a septic tank is to be installed, what is the minimum desirable size, in gallons? 1. 250 2. 500 3. 1000 4. 1500

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3. 1000

Front 22

8-28.Excessive scum in septic tanks results in which condition? 1. Odor decrease 2. Low solids content 3. Baffling 4. Odor increase

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4. Odor increase

Front 23

8-31.A unit containing 100 personnel requires how many feet of latrine space? 1. 4 2. 8 3. 16 4. 32

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3. 16

Front 24

8-32.What type of latrine is used when you have a high groundwater level? 1. Bored hole 2. Deep pit 3. Straddle 4. Mound

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4. Mound

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8-34.What is the depth, in feet, of an 8-seat box type latrine in use for 2 weeks or less? 1. 2 2. 4 3. 6 4. 8

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2. 4

Front 26

8-35.Which urine disposal facilities are the best for field use? 1. Pipe urinals 2. Urinal troughs 3. Urine soakage pits 4. Recessed urine pits

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3. Urine soakage pits

Front 27

8-36.Pipes utilized with the pipe urinal system should extend how many inches above the ground surface? 1. 15 2. 26 3. 30 4. 36

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3. 30

Front 28

8-39.When fiber pipe is used to lay pipe in a trench, what is the distance requirement, in inches, between the joint openings? 1. 1/2 2. 3/8 3. 3/4 4. 7/8

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2. 3/8

Front 29

8-40.The distance between laterals during the layout of leaching fields is how many times wider than the trench? 1. 1 2. 2 3. 3 4. 4

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3. 3

Front 30

8-41.The water cycle associated with water treatment is also known by what term? 1. Disinfection 2. Circulation 3. Treatment 4. Hydrologic

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2. Circulation

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8-45.Impurities in water can be broken down into how many different categories of impurities? 1. 1 2. 2 3. 3 4. 4

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2. 2

Front 32

8-46.How many methods are currently in use by the Seabees in field water treatment and purification? 1. 3 2. 4 3. 5 4. 6

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3. 5

Front 33

8-47.Which is a common floc-forming chemical used in flocculation? 1. Chlorine 2. Bromine 3. Iodine 4. Aluminum sulfate

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4. Aluminum sulfate

Front 34

8-48.Each pound of liquid chlorine produces how many cubic feet of chlorine gas at atmospheric pressure and at a temperature of 68 degrees? 1. 5 2. 10 3. 15 4. 20

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1. 5

Front 35

8-51.Which is NOT a consideration in the safe handling of chlorine? 1. Never connect a full cylinder to a manifold with another cylinder unless temperatures are the same. 2. When not withdrawing the chlorine, keep outlet valves shut. 3. Disconnect all hoses once the cylinder is empty. 4. Ensure that the storage area contains high humidity.

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4. Ensure that the storage area contains high humidity.

Front 36

8-52.Discharge of cylinders containing chlorine should be conducted in a room with a temperature of               degrees Fahrenheit. 1. 50 2. 60 3. 70 4. 80

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3. 70

Front 37

8-53.Direct feed chlorinators cannot be used where the pressure of the water being treated is more than how many pounds per square inch? 1. 10 2. 20 3. 30 4. 40

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2. 20

Front 38

8-54.The chlorinator operates under how many inches of vacuum? 1. 1 2. 2 3. 3 4. 5

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4. 5

Front 39

8-55.The dosage rate of a hypochlorinator is controlled by what piece of equipment? 1. Meter 2. Pilot valve 3. Feeder container 4. Gearbox

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1. Meter

Front 40

8-56.When locating chlorination equipment in a room with other pieces of equipment, you should install curbing how many inches high around the chlorination equipment? 1. 2 2. 4 3. 6 4. 8

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3. 6

Front 41

8-57.To prevent accidents caused by the corrosive action of hypochlorite solutions, the solution container is lined with which type of material? 1. Chlorine resistant iron 2. Ammonia resistant steel 3. Chlorine resisted plastic 4. Ammonia resistant plastic

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3. Chlorine resisted plastic

Front 42

8-58.Cylinders containing ammonia gas will liquefy at a temperature of how many degrees Fahrenheit? 1. 130 2. 135 3. 145 4. 150

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3. 145

Front 43

8-59.Water samples from a lake should be taken how many feet out from the shore? 1. 10 2. 15 3. 20 4. 25

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4. 25

Front 44

8-60.In an orthotolidine test, how many minutes should the sample sit after adding the orthotolidine solution? 1. 5 2. 10 3. 15 4. 20

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1. 5

Front 45

8-61.In an OTA test, the temperature of the sample should never be above a temperature of how many degrees Fahrenheit? 1. 58 2. 68 3. 78 4. 88

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2. 68

Front 46

8-63.How many salinity tests can be performed to determine the salt concentration of a sample of water? 1. 1 2. 2 3. 3 4. 4

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4. 4

Front 47

8-64.Which method of determining water hardness is vastly superior to other tests? 1. Salinity 2. Methyl orange 3. Titration 4. Methyl purple

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3. Titration

Front 48

8-65.Which type of odor test is most widely used to determining odor levels? 1. Fragrance 2. Threshold 3. Briggs 4. Stark

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2. Threshold

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8-66.For how many years are water sampling test results kept? 1. 1 2. 2 3. 3 4. 4

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3. 3