Sanitation, Design & Installation Practice Exam Flashcards

Flashcards covering sanitation design, pump mechanics, septic tank requirements, and plumbing installation standards based on the lecture transcript.

How do you connect a pump in series?

Same gpm

At what distance should a septic tank be located from a water supply source to prevent sanitation issues?

$$15,\,meters$$

What is the retention period, or time allowed for suspended matters in a septic tank to settle and stabilize?

$$24,\,hours$$

Which type of microorganism is mainly responsible for the biological action that digests sewage in a septic tank?

Anaerobic bacteria

How far above the surface of the ground should the top cover and manhole of a septic tank be extended?

$$15,\,cm$$

At what interval should horizontal soil branch piping be supported by substantial iron hangers?

$$1.50,\,meters\,apart$$

One horsepower is equal to how many foot-lbs per minute?

$$33,000$$

Which type of pump is classified as a positive displacement pump?

Piston pump

What is the absolute pressure if a pressure gage registers $50,\,psig$ in a region where the barometer is $1.25,\,psia$?

$$64.25,\,psi$$

What is the property of a fluid whereby its own molecules are united or attracted to each other?

Cohesion

What is the study of the distribution of a disease or condition in a population?

Epidemiology

Which type of valve should be used only in a wide open or fully closed position?

Gate valve

According to the transcript, $1,\,psi$ is equivalent to a water head of how many units?

$$2.31,\,psi$$

Which style of sink is typically used for janitorial services in a building?

Slop sink

Which pipe material is never recommended to convey water for human consumption because it is poisonous?

Lead pipes

What is the term for non-soluble materials and the end product of bacterial action that settle at the bottom of a septic tank?

Sludge

What type of well penetrates the earth to depths of not more than $100,\,ft$?

Shallow well

What is the minimum horizontal distance required between a vent terminal and a window opening of a building?

$$1.5,\,m$$

What is the size of the relief vent on a circuit vented soil branch installation?

$\frac{1}{2}$ times the diameter of the soil pipe

What is the jelly-like substance formed during the process of coagulation?

Floe

What is the prescribed height of a toilet bowl for handicapped fixtures?

$$450,\,mm$$

Which type of vent pipe system on plumbing does liquid waste flow through?

Wet vent

How is water hardness commonly measured?

Grains per gallon

What is the term for the unobstructed vertical distance between a faucet supplying water and the flood level rim of a fixture?

Air gap

What is the vertical distance between the dip and crown weir of a trap?

Trap seal

What device is used to prevent backflow by admitting air to the supply pipe whenever a vacuum occurs?

Vacuum breaker

What term refers to the load producing effect on the plumbing system for different kinds of plumbing fixtures?

Fixture unit

What is the alternative name for a flush meter?

Flush valve

What is the space between the liquid level line and the inside top cover of a septic tank?

Freeboard

At what grade must a soil branch be sloped to assure a self-scouring condition?

$$1/4,\,inch\,per\,foot$$

Water closets are computed as how many fixture units when determining septic tank size?

$$6$$

One fixture unit is equivalent to what flow rate?

$$30,\,lit/min$$

What is the minimum finished interior area for all shower compartments?

$$0.60,\,sq.\,m$$

How far must water pipes be laid above the sewer or drainpipe?

$$0.30,\,mm$$

What is the minimum diameter for a building water service pipe?

$$19,\,mm$$

What type of water closet is considered the most quiet, efficient, and sanitary?

Siphon vortex

Find the downward force at the bottom of a full coconut oil tank ($SG = 0.90$) that is $3,\,m$ long, $3,\,m$ wide, and $2,\,m$ high.

$$16,200,\,kg$$