Sanitation, Design, and Installation Pre-Board Practice Test

These questions are part of the practice quiz. Start practicing

• What process is NOT involved in the self-purification of a flowing stream of water?
• What type of well is primarily used for agricultural purposes, allowing easy access to groundwater?
• In plumbing, what is the term for the part of the drainage system that carries sewage away from a building?
• What is the term for the combination of sanitary sewerage and storm water?
• In plumbing, which type of connection is considered direct waste?
• Water closets shall be computed as ____ fixture units when determining septic tank size.
• What is the type of water closet prescribed for public toilets?
• Why is it important to insulate hot water pipes?
• How do the safety features of a service hot water system function?
• What is the typical retention period for suspended solids to settle in a septic tank?
• What is the standard pressure range for residential water supply systems?
• Which type of plumbing pipe is most commonly used for residential cold water supply?
• What should be the minimum slope for drainage pipes according to standard guidelines?
• What should be considered when installing a cleanout in a plumbing system?
• What is the minimum dimension for a manhole in a septic tank?
• What field studies the distribution of disease or conditions in a population?
• What is the vertical distance between the dip and crown weir of the trap?
• What is the controlled outlet in a pipeline used to discharge or drain water called?
• Which part of a plumbing system collects water that may ultimately be discharged?
• What is the unit of kinematics viscosity in the metric system?
• What is a common characteristic of scupper drains?
• A plumber drops a coin into a well and hears the splash after 2 seconds. How deep is the well?
• What is the term for the unobstructed open edge of a fixture?
• What is a common size for standard residential sewer pipes?
• Which plumbing symbol represents a cold water line?
• Which type of pipe is not suitable for use with a saddle clamp to connect water service?
• What type of fitting is installed in a plumbing system to prevent the passage of air, gas, and some vermin through the pipe?
• Which type of water treatment process primarily removes larger particles from water?
• For assembly places for public use, how many urinals are required if the capacity is 115 males?
• What is the size of a horizontal rainwater pipe with a 2% slope for a maximum rainfall of 100 mm on a 206 m2 area?
• What is the minimum clearance required for convenient opening or closing of a cleanout with respect to the floor line?
• The minimum slope required for 102 mm diameter or larger drainage piping is _____.
• What is that vent pipe in plumbing that serves the building drain and building sewer?
• Which type of pipes are described as suitable for conveying hot water?
• What is the minimum diameter of a fire hose outlet for an interior wet standpipe?
• Which type of pump is specifically used for underground applications?
• What is the correct way to connect pumps in series to ensure same flow?
• The standard minimum slope for drainage piping larger than 102 mm is _____.
• Which type of waste includes refuse that is biodegradable?
• In plumbing, what does 'siphonage' refer to?
• What defines a well that extends to a depth of no more than 100 ft?
• What type of waste pipe is connected to a sink in a janitorial service environment?
• What is the primary purpose of a trap in plumbing?
• What is the minimum distance a septic tank should be constructed from a water supply source to avoid contamination?
• What is the undesirable type of vegetation formed when a water reservoir is exposed to light?
• How is rainfall intensity typically measured?
• Roof deck strainers shall have a total net inlet area less than how many times the area of the outlet pipe they are connected to?
• Which type of pipe conveys wastewater and water carried waste without fecal matter?
• In plumbing codes, what is often the minimum trap diameter for toilets?
• What is a secondary pipeline in sewerage that has no other sewer tributary?
• What is the appropriate retention period for suspended matter to settle in a septic tank?
• At what point is the sewer service line connected to a sewer main?
• What is the purpose of disinfecting drinking water?
• What is the primary reason for using copper pipes in plumbing systems?
• What type of plumbing fitting is typically used to change the direction of fluid flow?
• What is the primary function of a trap in plumbing systems?
• When connecting cast iron pipe and fittings of different sizes, what is needed?
• Clean-outs shall be provided at every _____ length or a fraction thereof.
• What does a backwater valve prevent in a plumbing system?
• What is the function of a distribution box in a septic system?
• What additional component can the waste pipe convey, apart from organic waste?
• What is the classification of water when it contains dissolved salts of calcium and magnesium?
• For lavatories not affected by side walls, the minimum air gap with an effective opening not greater than 13 mm diameter is _____.
• Which plumbing fixture type is designed to prevent the backup of sewage?
• How many fixture units does a lavatory typically account for?
• What type of end connections is used for valves smaller than 2 inches in diameter?
• What kind of substance in public health continuously deforms under shear force?
• A gate valve used in drainage work having a 102 mm diameter or larger shall have _____ bodies.
• What happens to water when heat is applied, according to molecular principles?
• What is the recommended maximum number of fixture units for a private plumbing system?
• Before adopting water from any source for domestic supply, what examination is necessary?
• What is the main cause of object taste and odor in water?
• Which type of water closet is known for being the least expensive and most prone to noise?
• What fitting operates automatically to refill the water tank after discharge and shuts off when full?
• At what level is a building subdrain typically located?
• There shall be a minimum of ______ drinking fountains per occupied floor in schools, theaters, auditoriums, dormitories, offices or public buildings.
• What is a common characteristic of a siphon jet water closet?
• What is the primary function of sewage treatment plants?
• What is the term for a pipe that conveys water from the water service pipe or meter to the utilization point?
• Which instrument is used to measure water flow?
• How many foot pounds per minute does one pour index horsepower equal?
• Which of the following is a common method for disinfecting water supply systems?
• Which physical characteristic of sewage is determined by factors such as turbidity?
• In the context of plumbing, what does a 'cleanout' refer to?
• At what slope should the soil branch be graded to ensure self-scouring conditions?
• If the pressure of water at one point in a pipeline is 117.3 kPa and reduces to 110 kPa with a head loss of 0.2, what is the velocity at the second point?
• Leaching field is categorized as one of the on-site effluent disposal for septic tanks. How far should be the distance from a shallow well to prevent contamination of water?
• Which plumbing fixture requires a minimum distance of 600 mm from the center of the fixture to an obstruction?
• Which piping material is commonly used for cold water lines?
• What is considered the basic element of a cold water supply system in a building?
• What does a backflow preventer primarily safeguard against?
• What is the best definition of health?
• What component in a septic system is specifically designed for the settlement of solids?
• What is the prescribed color coding of high-pressure piping under the Steam Division?
• All shower compartments shall have a minimum finished interior area of ______ sq.m.
• What transports infectious agents, such as water, food, and insects?
• Drains in gutters in public shower rooms shall be spaced not more than ___ apart.
• Which installation method is prohibited in a lateral to prevent solid deposition?
• A clean-out may be omitted on a horizontal drain line less than ____ in length.
• What type of bacteria primarily digests sewage in a septic tank?
• What is the receptacle attached to the plumbing system on which water or waste may be collected?
• Which of the following was not used for water storage during the primitive period?
• What is the size of the gutter at a 2% slope for maximum rainfall of 150 mm over 13 m?
• What is the depth of the top cover and manhole of a septic tank that should be extended above the ground?
• What is the term for water that decreases the ability to produce lather with soap?
• What symbol indicates an elbow turned up in plumbing schematics?
• In hospital wards, 1 bathtub or shower shall be provided per ____ patients.
• What is the term for bacteria that thrive in the absence of free oxygen?
• What is the primary purpose of using a wet vent system in plumbing design?
• If cast iron weighs 640 lbs per ft³, what is the weight of a cast iron block measuring 14' x 12' x 18'?
• Which method is considered uncommon for supplying water from source to customer?
• Galvanized wrought iron or galvanized steel pipe shall not be used underground and shall be kept at least ____ above ground.
• Where should storm water not be discharged?
• No building water service pipe shall be less than _____ in diameter.
• What is the purpose of venting in plumbing systems?
• In plumbing, the unobstructed vertical distance between a faucet supplying water and the flood level rim of a fixture is called what?
• What is the name of the compartment in a septic tank that is usually extended above the surface to prevent infiltration?
• What term describes a situation where the top of a well is lower than the previous stratum, allowing water to rise and flow without pumping?
• What is the minimum air gap required for lavatories not affected by sidewalls with an opening no more than 13 mm?
• How is the water nature determined through acidity or alkalinity?
• What type of piping is primarily used for hot water delivery in a building?
• The finished dam or threshold of a shower receptor must be at least how many millimeters lower than the outside floor?
• Which of the following is an effect of water hardness?
• What plumbing fixture is used for flushing human waste?
• What type of bacteria primarily digests sewage in a septic tank?
• What would happen if a septic tank was not airtight?
• What is identified as the chief factor in the clarification process of still water?
• What is the main advantage of using chlorine over other water supply treatment methods?
• What is the pipe fitting with an outside thread and projecting square head used for closing the edge of another fitting?
• What distinguishes a tube from a pipe in regards to wall thickness?
• Which of the following is an example of a non-potable water source?
• What is formed by the chemical reaction of oxidation in pipes, commonly known as rust?
• What is a sedimentation chamber in a septic tank used for?
• What is the correct method for interconnecting a sewer service pipe to a sewer main?
• What is the primary function of a local vent in plumbing systems?
• What occurs when air comes into contact with wastewater in the drainage system?
• What is the typical slope recommended for building sewer lines to ensure proper drainage?
• What is the minimum distance a septic tank should be constructed from a water supply source to prevent contamination?
• What is a common method for reducing turbidity in water?
• A rectangular ground reservoir measures 8m long, 6m wide, and 8m deep. What is the total cost of excavation if labor costs P50.00 per cubic meter?
• Which aspect of a plumbing system helps prevent moisture accumulation in walls and ceilings?
• How far above the surface of the ground should the top cover and manhole of a septic tank be extended to prevent surface water infiltration?
• Master Plumber A can finish a job in 8 hours while Master Plumber B takes 10 hours. How many hours will they take to complete the job together?
• How much water pressure must dry standpipes withstand when ready for service?
• What is the minimum capacity of the water tank needed for a complete water closet flushing in a toilet?
• What is the purpose of a cleanout in a drainage system?
• Which of the following is NOT typically considered a method of water disinfection?
• What is the role of a local vent pipe in a plumbing system?
• For public health reasons, the sanitary drainage system must discharge to what?
• Cast iron fittings up to and including 51mm in size, when used in connection with potable water piping shall be_____.
• What type of plumbing fixture is designed to mix both hot and cold water?
• According to PD 1095, a dry standpipe is required for buildings that are how many stories or more?
• What is the total relationship of humans to their environmental factors called?
• What is the standard depth at which a building sewer should be installed?
• What does the symbol for a soldered reducer (concentric) look like in plumbing diagrams?
• One fixture unit is equivalent to?
• For sewer systems, which is an acceptable material for pipes?
• Which water closet is considered the most quiet and efficient?
• What type of pump delivers water at a higher point than the pump itself when the valve is closed?
• How long should a pipe be added and installed on the top of a riser of the highest fixture level to absorb air pressure and reduce excessive hammering sound?
• Which vent is designated for a single fixture or battery of fixtures connected to the same stack?
• What is the role of anaerobic bacteria in a septic tank?
• What is the primary use of a bidet?
• What is the typical diameter of a residential drainage pipe?
• Which by-product is created when ferrous oxide forms due to corrosion in pipes?
• What role does a water meter play in plumbing systems?
• Which of the following is not a basic function of all faucets?
• What is a common purpose of a catch basin in stormwater management?
• What is the term that refers to the load producing effect on the plumbing system for different kinds of plumbing fixtures?
• In plumbing design, what is typically considered for calculating water pressure losses?
• Which water supply source was not utilized in earlier times?
• How is water hardness measured?
• In plumbing, what is the purpose of a vent stack?
• What is the primary function of a sedimentation chamber in a septic system?
• What device is used to prevent backflow by allowing air to be admitted to the supply pipe during a vacuum?
• What is the key feature of a wet vent system?
• How does the expansion of water in pipes affect plumbing systems?
• What is the recommended size of a service pipe for a 2 storey residential house approved by MWSS?
• What is a good reason why hardness in water is objectionable?
• What is the minimum horizontal distance required between a vent terminal and a window opening of a building?
• What type of vent is intended to ventilate foul odors and remove air from the adjacent area?
• What is the clean-out requirement for horizontal drain lines less than a specified length?
• Which type of bacteria has no known function in sewage treatment?
• What symbol represents a shower stall in plumbing schematics?
• What type of wrench is used when working with a plated finish in a space too small for a pipe wrench?
• What is the jelly-like substance formed during the coagulation process?
• Which fitting is not recommended for changing direction in a drainage line?
• What type of well penetrates a water bearing stratum where water is held under pressure and rises in the well?
• What method is commonly used to ensure water quality in a public water system?
• What is the slope requirement for soil branch piping to ensure effective flow and prevent stoppage?
• What type of bacteria is responsible for breaking down waste in anaerobic conditions in a septic tank?
• What is the prescribed distance of the vent from the trap seal in plumbing installation?
• How many lavatories should be installed in a school with 240 male students?
• Which type of sewer is characterized as one that is solely provided for a specific building or location?
• What is the minimum size of water supply required for a water closet flush valve type?
• A swimming pool is 6m wide by 12m long, with depths of 1.20m at one end and 2.40m at the other. How many gallons of water does it contain?
• What term describes the rate of flow of liquid measured per unit of time?
• What structure is specifically installed at the basement level of a building for draining wastewater?
• What is the total fixture unit (FU) for a plumbing system composed of a flush tank water closet (4), a lavatory (1), a shower head (2), and a faucet (2)?
• What is the purpose of a vent in a plumbing system?
• In plumbing design, which type of elbow is typically preferred for drainage lines?
• What is the term for a pipe or shaft used to remove foul or congested air from a fixture or room and convey it to the atmosphere?
• An oil tank measures 3m long, 3m wide, and 2m high, filled with coconut oil of specific gravity 0.90. What is the downward force at the bottom of the tank?
• What do you call the process of removing the hardness causing minerals from water?
• What term describes a disease that normally prevails in a certain locality?
• What do urea, proteins, and amino acids classify as?
• What settles at the bottom of a septic tank as the biological action of bacteria proceeds?
• Which type of pipes is not recommended for conveying water for human consumption due to toxicity?
• What symbol is used for soil or waste pipe above grade?
• What is the essential function of a trap in plumbing?
• Which type of vent pipe has no direct connection to plumbing fixtures?
• Which of the following terms refers to the unwanted substances found in sewage?
• Which pipe fitting is used for vertical to horizontal changes of direction?
• What is an essential feature of water closets designed for high efficiency?
• What is the purpose of a dip tube in a hot water tank?
• Which type of pipe is commonly used for water distribution in building plumbing?
• What term describes non-soluble materials produced from the breakdown of waste in septic systems?
• What is the pipe connection in which a ball is held in a cup-like that allows movement in every direction?
• What is the depth of lead poured over oakum in a caulk joint?
• What disinfectant is commonly used for large public water supplies?
• What material is frequently used for underground plumbing installations that poses a risk of poisoning?
• What issue arises from toilet flushes causing rapid water flow?
• Which of the following describes a loss of trap seal due to suspended foreign objects?
• Which plumbing system component is designed to convey liquid waste away from a building?
• What type of wave is commonly used in waste management to indicate the flow direction?
• Which venting system allows one vent to serve two traps?
• Which of the following is a key factor in determining the design of drainage systems?
• Which of the following does NOT contribute to the treatment of sewage?
• What is the minimum trap diameter required for a shower bath?
• What is the purpose of a scrub sink in a hospital?
• Which of the following is not considered a type of lavatory?
• Vent openings shall terminate not less than ____ from any window, door or opening.
• What is the fixture unit count for an 18 storey dormitory building with 6 bathroom groups on each floor in class 2?
• Which type of valve should only be used when fully open or fully closed?
• What is the term for the loss of trap seal due to rapid water flow?
• What term describes the property of a fluid where its molecules are attracted to each other?
• What is that vent pipe system on plumbing which liquid waste flows through?
• Which plumbing symbol indicates a safety valve?
• What common water source is derived from natural springs and was historically important?
• Water supply wells shall be located at least _____ from the building sewer.
• What is the term for the temperature at which water vapor begins to form above liquid fuel?
• What is the term for the discharge from latrines, urinals, bathrooms, kitchens, and stables?
• Which method does not apply in the removal of suspended materials and color in the water supply?
• The minimum size for a building water service pipe is _____.
• What is the absolute pressure if a pressure gauge reads 50 psig and the barometric pressure is 1.25 psia?
• What is defined as a fixture in plumbing?
• What is the correct size of a downspout for a rainfall intensity of 100 mm if the deck roof area is 435 mm2?
• Which of the following is a common method for measuring the pressure of a fluid?
• What is the maximum distance soil branch piping should be supported to prevent sagging?
• Which component of the drainage system conveys wastewater containing organic waste?
• How many fixture units are assigned to a shower in a private residence?
• What is the primary function of a vent pipe in a drainage system?
• For assembly places for public use, how many water closets are required if the capacity is 115 males?
• The volume of a liquid passing through a cross section of a stream in unit time is known as:
• What type of vent also serves as a drain?
• What is the size of the yoke or bypass vent for a high-rise building?
• A shower head used in a private residence has how many water supply fixture units?
• What is the process of exposing water to the oxygen of the atmosphere to neutralize taste, odor, and dissolved oxygen?
• What is the required downspout size for a rainfall intensity of 100 mm on a 1200 m2 deck roof?
• What protects the trap from losing its seal when water passes through it?
• Which organization sets the standard specifications for pipe materials used inside buildings?
• What is the prescribed height of the toilet bowl designed for handicapped individuals?
• What is the temperature in Kelvin of 2 liters of water at 30°C after adding 500 calories of heat?
• Which chemical is often used to clear clogged drains?
• What is the process of water supply purification which consists of applying certain chemicals in particles too small to be removed by plain sedimentation?
• What is the primary purpose of a roof deck strainer?
• Water pipes shall be laid a minimum of ______ above the sewer or drainpipe.
• What is the size of the relief vent on a circuit vented soil branch installation of plumbing fixtures?
• Which process is described as a less aesthetic but certain oxidation process used in treatment applications?
• What type of pump is categorized as a positive displacement pump?
• What is the main purpose of the relief vent in plumbing installations?
• What is commonly used to monitor the quality of water in sanitation practices?
• Which of the following is a potential result of pipe corrosion?
• What is the minimum trap diameter required for a laundry tub?
• 1 psi is equivalent to how many feet of water head?
• What is the classification method for waste pipes based on their function?
• What speed is required for a pump to deliver 1 GPM against 1 foot head per stage?
• What is the recommended distance apart for iron hangers supporting horizontal soil branch piping?
• What type of receptacle is installed at a corner wall to collect rainwater from a balcony?
• Which of the following is considered a crucial factor in maintaining septic tank efficiency?