[MP] Diagnostic Exam 03 | SPDI

A multi-step process to reduce turbidity and suspended matter. It includes the addition of chemical coagulants or ph-adjustment chemicals that react to form floc. It effectively removes particles larger than 25 microns.

Which of the following provides protection against both backsiphonage and backflow?

Find flow in a 4” sanitary pipe at 1/8” slope flowing full flow.

A class of hazard which are liable to burn with extreme rapidity or from which poisonous gases or explosions are to be expected in the event of fire.

Installation of all parts of Plumbing System or a particular unit that can be completed before the installations of fixtures is called _______.

When sizing a gas appliance:

For an area of 276 m², determine the size of the horizontal drain pipe if the rainfall intensity is 150mm/hr and the slope is 2%

A codebook water supply sizing chart for fixtures requiring hot and cold water, provides:

A pump station is used to lift water 50 ft above the pump station to a storage tank. The pump rate is 500 gpm. If the pump has an efficiency of 85 % and the motor has an efficiency of 90%. What is brake hP?

What is the minimum required size of the standpipe in buildings in which the highest outlet is higher than twenty-three (23) meters above the fire service connections?

A pipeline system filled with water and connected to a constant water supply for the use of the BFP and the occupants of the buildings solely for fire suppression purposes.

The piping system that receives a flow or air to or from a drainage system or to provide a circulation of air within such system to protect trap seals from siphonage or back pressure.

What is the amount of real horsepower going to the pump?

Digestion of the waste through the natural bacteria digestive action in a tank or chamber.

The effluent contains 26 mg/L of BOD5. How many kilograms per day of BOD5 are discharged when the effluent flow rate is 9.5 MGD?

One expectation of a water supply is that it will:

What is the pump size required to fill the tank at a rate of 120 gpm if water is being pumped from a reservoir to a storage tank on a hill? The elevation difference between water levels is 1200 ft.

Level II source of water supply as per LWUA.

Find the velocity of flow in a storm system of a 6” pipe sloped at ½” per foot.

The vent pipe serving a combination waste and vent system with 4-inch drain pipe shall be at least _______.

Extends from the house drain at a point 0.60 meters from the outside face of the foundation wall of a building to the junction with the street sewer or to any point of discharge, and conveying the drainage of one building site.

The valve required for hot water tank to prevent excess pressure is

A G.I. fitting which is used when a pipe has already been installed but dismantling is difficult.

All dry standpipes shall be tested hydrostatically to withstand

Gas water heaters are rated based on their btu values, whereas electric water heaters:

What is a valve used to check or prevent reversal of flow in the line?

The simplest of the reciprocating pumps and consists of a piston moving up and down in a cylinder or barrel.

A class of hazard with low combustibility that no self-propagating fire.

Minimum distance of a water supply well from a seepage pit or cesspool.

It refers to the demand considered in determining the size of water service pipe when simultaneously used at the same time.

Sizing of gas system begins with:

What is the standard size of a clean-out for a 4” Φ PVC pipe?

The jelly like substance formed in the process of coagulation.

A device that contains within it chemicals, fluids or gases for extinguishing fires, the means for application of its contents for the purposes, and is capable of being readily move from place to place.

It is a physical link between a potable water supply and a questionable source.

The multi-purpose extinguisher, as it can be used on classes A, B and C fires. Best for running liquid fires (liquid B). Will efficiently extinguish Class C gas fires.

How many pounds of solids are discharged per day when the plant effluent flow rate is 4.75 MGD and the effluent solids concentration is 26 mg/L?

All vent pipes shall extend undiminished in size above the roof or shall be reconnected with the soil or waste stack vent of proper size at a point below the roof; the vent through the roof (VSTR) shall be increased _____ above the reconnection point of stack vent and horizontal vent.

A kind of G.I. fitting that has one end external threads, while the other end has internal threads.

What is the minimum required size of the standpipe in buildings in which the highest outlet is twenty-three (23) meters or less above the fire service connections?

What is the flow capacity in a 6” stack?

Which of the following causes alkalinity in natural water?

It represents the total resistance to flow through the system.

A general term referring to the introduction of materials not normally found in water that make the water less desirable or unfit for its intended use.

What is the basis of determining the size of a Septic Tank?

What percentage of 180 degree hot water mixed with 45 degree cold incoming water to supply 105 degrees water?

What do you call the removal of silts, dirt and other objectionable minerals in water?

The cheapest and most widely used fire extinguishers. Used for Class A fires not suitable for class B (liquid) fires, or where electricity is involved.

What is the min. height of vent above the highest level rim of the fixtures served before offsetting horizontally?

Bacteria living or active in the absence of free oxygen.

A pipeline system filled with water and connected to a constant water supply for the use of the BFP and the occupants of the buildings solely for fire suppression purposes.

More expensive than water fire extinguisher but more versatile. Used for classes A and B fires. Not recommended for fires involving electricity, but are safer than water if had inadvertently sprayed onto live electrical apparatus.

A kind of G.I. fitting used as a reducer from a bigger diameter to a lesser diameter.

What do you call the length along the center line of the pipe and fittings?

A water treatmnet process by which small particles of fine soils and sediments aggregate into larger lumps.

Removal of oil and grease from sewage is known as:

Refer to Figure 1. MCVA, given a 10-storey building with a total of 400 DFU each floor. What is the size of the soil stack at the 5th floor?

Find terminal length of flow in a 4” stack flowing 32 gpm.

What connection in which one pipe slides into another to make a tight joint with a threaded retainer or an approved gasket?

It is ideal for fires involving electrical apparatus. Also extinguish class B liquid fires, but has no post fire security and the fire could re-ignite.

Terminal length is defined as the distance that the terminal velocity is reached. Find terminal length of flow in a 6” stack with a terminal velocity of 6 fps.

A type of standpipe system in which the pipes are normally not filled with water. Water is introduced into the system thru fire service connections when needed.

Drains shall have a waterway equivalent to the area of the tailpiece, meaning, the sum of all the area of the perforation of the strainer is equivalent to the outlet area.

What is the min. size of trap and waste branch for a pedestal urinal?

The minimum pressure to operate a flush valve in water closet and urinal.

Listed below are the prescribed rules on labeling the Water Container as to the type of water by the Food and Drug Authorities. Which of the following are covered by the prescribed rules?
1. Distilled
2. Demineralized
3. Spring Water
4. Potable

It is classified as an intercepting sewer branch. Also known as the contributing sewer.

A system of vertical pipes in a building to which fire hoses can be attached on each floor, including a system by which water is made available to water outlets as needed.

A temperature at which water vapor forms above liquid level.

This system is provided with 64 mm (2 ½ in.) hose connections for full-scale firefighting

A sprinkler system that is installed for buildings is required for ______.

What is the primary purpose of disinfecting drinking water?

Minimum distance of a water supply well from a disposal field.

What is a valve that controls the flow of water or gas from main to a service pipe?

What is the min. front clearance of clean-out 51 mm or less?

Identify letter “b” in Fig. VTR – 01.

Which of the following is the effect of acidic water on the plumbing system?

What is the primary purpose of gate valve in the distribution system?

A system with a source, a reservoir, a piped distribution network and household taps. It is generally suited for densely populated areas. This level of facility requires a minimum treatment of disinfection.

The term applied to those portions of a plumbing system, which have been installed and approved prior to contemplated additions, alterations or correction, is called _______.

A type of standpipe system in which the pipes are normally not filled with water. Water is introduced into the system thru fire service connections when needed.

What is the fitting to be used for the cleanout if the pipe is 152 mm in diameter?

A class of hazard which are liable to burn with moderate rapidity or to give off a considerable volume of smoke, but from neither poisonous fumes nor explosions are to be expected in the event of fire.

How many gallons of water will 18 kW heat up 70 degrees?

What is the min. fixture drain size for a water closet?

Chlorination of water is done for the removal of:

The vertical distance from a faucet spout outlet to the flood level rim of a fixture is called

What is the min. fixture drain size for a bathtub?

What is the min. fixture supply pipe diameter for tank type water closet?

A ______ overrides the thermostat to ensure that safe operating conditions are present.

Terminal velocity is defined as the velocity in the stack that remains practically unchanged. Find terminal velocity of a stack when an 8” stack is flowing 40 gpm.

A water quality problem caused by the presence of carbon dioxide in the water.

Part of the lowest horizontal piping of a plumbing system, which receives the discharges from the soil, waste and other drainage pipes inside of a building and conveys it to the house sewer outside of the building.

The sewage sediment, rich in destructive bacteria, which can be used to break down fresh sewage more quickly.

In filtration, the amount of dissolved solids passing through the filters is

A sacrificial rod that is installed in a water heater to protect the tank from any possible corrosion and to extend the tank’s life.

What is the min. front clearance of clean-out 51 mm or more?

Find terminal length for an 8” stack.

A material used as a covering, such as a pipe bigger than the main pipe of a deep well so that the main pipe can be pulled out for repair.

The process of removing the hardness causing minerals from water?