Plumbing Code Weekly Test 3

FU and length

The size of a vent pipe is determined by _____.

A. slope and location

B. FU and length

C. slope and the waste served

D. FU and slope

1

Maximum number of slip joint fitting that may be used on the outlet side of a trap. RNPCP, Chapter 10

152 mm

What downspout size would you specify for a 800 sqm roof with a rainfall intensity around the area of 152.4 mm/hr?

0.6 m

Maximum length of a tailpiece

51 mm

Minimum water seal of a grease trap

152 mm

Minimum water seal of an interceptor or clarifier

1.2 m

What is the minimum distance from disposal field to another disposal field?

2.4 m

Distance of disposal field to buildings or structures

1.5 m

distance of disposal field to property line, seepage pits or cesspools, on site domestic water service line, and distribution box

4

Wet venting is limited to _____ fixtures

1 and 2

____ and ____ fixture arm - limit of wet venting

Backvent Pipe

Connects directly with an individual trap underneath or behind the fixture

Individual Vent

vents a fixture trap and connects above the fixture served or terminates in the open air

Local vent

a pipe or shaft to convey foul air from a plumbing fixture or a room to the outer air

9"

The side walls of a Septic Tank shall be at least ____ above the liquid depth. (RNPCP, Appendix B)

Main Vent

The principal artery of the venting system to which vent branches are connected.

Vent Stack

The vertical vent pipe installed primarily for providing circulation of air to and from any part of the soil, waste of the drainage system

Stack Vent

The extension of a soil or waste stack above the highest horizontal drain connected to the stack

Parallel vent stack

What is required when a soil or waste stack extends 10 or more stories?

Septic tank

______ is a form of a private sewage disposal system, which is installed whenever a building/house does not have any access to a public sewer

Sovent System

is a sanitary drainage system which allows the drain, waste and venting to be performed through a single stack.

64 mm

Minimum distance of a 32 mm trap arm diameter to a vent (note: length of trap arm shall in no case be less than two times the diameter of the trap arm; the maximum length of a 32 mm trap arm is 0.76 m)

38 mm

What is the minimum condensate pipe diameter of a cooling equipment with capacity through 125 ToR?

76 mm

The minimum inlet and outlet size for sand interceptor (The outlet pipe shall be the same size as the inlet size of the oil interceptor, the minimum being 76 mm)

circuit vent

A group vent pipe that connects to the vent stack

Loop Vent

connects to the Stack Vent

Relief Vent

vertical vent line, the primary function is to provide additional circulation of air between the drainage and vent systems

178 mm

What will be the size of 0.5% sloped circular bottom gutter serving a roof area of 180 sqm, and the rainfall intensity around the area is 76 mm/hr?

55

What is the maximum length allowed for a vent stack serving 48 DFU?

A. 37

B. 65

C. 55

D. 35

37

What is the maximum length allowed for a vent stack serving 24 DFU?

A. 37

B. 65

C. 55

D. 35

65

What is the maximum length allowed for a vent stack serving 84 DFU?

A. 37

B. 65

C. 55

D. 35

1.60 m

For accessible toilets, signs on walls and doors should be located at a maximum height of _____.

1.40 m

minimum height of signs on walls and doors

1.20 m

maximum height of flush control

125

In a granule test of a water closet, the initial flush of three different flushes must result in no more than _____ on average remaining in the bowl.

Granule test

_____ test simulates a flush of watery feces, utilizes approximately 2,500 disc-shaped granules of polyethylene

0.2 sqm

Minimum dimension of a sand interceptor's inlet opening

subsoil drain

What is an underground drain pipe that receives only sub-surface or seepage water and convey it to a sump for disposal by gravity flow or by lift pump?

House Storm Sewer

the pipeline from the building to the public or street storm drainage system

Building Subdrain

that portion of an underground system, which cannot drain by gravity into the building sewer

French drain

a trench filled with a perforated pipe and gravel that allows water to drain naturally from your yard

6

The maximum trap loading of a pipe size 76 mm

283.9 LpD per lane

What is the estimated sewage flow rate of bowling alleys with snack bar only?

3 m

What is the horizontal distance required of a vent pipe from any openable window, door opening, air intake, or vent shaft?

0.15 m

vertical extension of a vent pipe or SVTR above the roof

0.3 m

distance of a vent pipe or SVTR from any vertical surface nearby

0.9 m

vertical distance of a pipe or SVTR above any openable window, door opening, air intake; also the distance of a vent pipe or SVTR away from any lot line, alley, and street boundary lines

1/3

Septic tanks should be cleaned when scum or sludge occupies ____ of the tank volume.

1.5

What is the storage factor for self-service auto washers?

2

Employee-operated auto washer: Storage factor is ____

344.5 kpa or 50 psi

What is the gauge pressure to be maintained for air tests as substitute for water test in water pipings?

3 meters head held for at least 15 minutes

What is the gauge pressure to be maintained for water test? ____ meters head held for at least ____ minutes

34.5 kPa or 254mmHg held for at least 15 minutes without air

What is the gauge pressure to be maintained for air test? ____ kPa held for at least ____ minutes

highest to lowest

For building sewer test, fill the sewer with water from ____ to ____ point.

septic

What is the sewage that turns dark and smell unpleasantly due to anaerobic decomposition?

scum

the floating parts in a septic tank

sludge

the semi-liquid substance that accumulates at the bottom

What can be drained through an airbreak?

A. refrigerator

B. cold storage room

C. cooling counter

D. air washer

Airgap

______ is installed for: Cold storage room, refrigerator, cooling counter, compartment, receptacle, appurtenance or device used for the storage or holding of food or drink, dishwashing or culinary sink

Air break

______ is installed for: Evaporative cooler, air washer, or similar airconditioning equipment

0.5%

A 203 mm diameter and larger sewer may have a slope of _____.

1%

SLOPE allowed for 102 mm and 152.4 mm diameter sewer

2%

standard minimum building sewer slope

4%

maximum allowed slope for a shower receptor

610 mm

The minimum depth of the sand interceptor under the invert of the outlet pipe is _____.

900 mm

minimum width of the inlet compartment of a septic tank

1500 mm

minimum length of the inlet compartment of a septic tank

manhole

When the first compartment exceeds 3.7 m in length, an additional ____ shall be provided over the baffle wall.

Bariatric Water Closet

Water closets that are made to accommodate overweight and obese people

Two Piece Water Closet

a.k.a Close-coupled toilet- the bowl and cistern are closely coupled together

Double Cyclone Water Closet

uses two jet streams to clean out the bowl with as little water as possible

6"

All condensers and sumps shall be properly trapped at the outlet with a deep seal trap extending to within ____ of the bottom of the tank.

1.5 m

Every abandoned building sewer shall be plugged or capped within _____ of the property line.

0.3 m

The bottom of the water pipe, at all points shall be at least _____ above the top of the sewer or drain line.

0.6 m

refers to distance of a building sewer to a building

1.07 m

Horizontal distance of the trap arm with a diameter of 38 mm

2.1 m

Vertical vent pipes installed in a roof used for other purposes shall extend a minimum of _____ above such roof.

Crown trap

Which among the choices is a prohibited trap?

A. Crown trap

B. Drum trap

C. Bottle trap

D. Gully trap

(Drum traps- may be installed only when permitted by administrative authority- Bottle traps- commonly used underneath sinks- Gully trap- a basin in the ground that receives piped wastewater from your house before it enters the underground sewer)

Schedule 30

Rainwater piping located within a medium height building basement area shall be of Galvanized Iron, _____.

1.20 m

Minimum spacing between trenches or leaching beds

1.80 m

distance on center of each distribution drain lines

0.90 m

maximum distance of perimeter of leaching bed to a distribution drain line

102 mm

Normally in Manila, the rainfall intensity used is _____.

127 mm

Determine the size of horizontal rainwater piping with a slope of 2% for a 350 sqm roof in an area where the the rainfall is 102 mm/hr.

Flared Joint

Jointing method for soft copper water tubing

A. Wiped Joint

B. Soldered Joint

C. Flared Joint

D. Brazed Joint

Wiped Joints

for jointing lead pipes or between lead pipe or fittings and brass or copper pipe

Soldered Joints

for jointing water supply pipes

Brazed Joints

for jointing air-conditioning, refrigeration, and other pipes for high-pressure

Galvanized wrought iron

Prohibited vent pipe material below ground

A. Galvanized wrought iron

B. Copper

C. Lead

D. Cast iron

15 cm

no galvanized wrought iron or galvanized steel pipe shall be used underground and shall be kept at least ______ cm above ground

1,333 L

If a septic tank can have an effective capacity of 4000 L, how much does the secondary compartment hold?

Ground water

A water that stands in or passes through the ground

Surface water

runs off over the surface of the ground

Storm water

runs off over the earth surface after a storm

IAPMO (International Association of Plumbing and Mechanical officials)

Elastomeric gasketed and rubber-ring joints shall comply with _____ installation standard

American Society for Testing and Materials

ASTM

American National Standards Institute

ANSI

National Master Plumbers Association of the Philippines

NAMPAP

Neoprene gaskets

_____ are recommended for oil handling piping works.

Pressure-Lock Type

a mechanical connection which depends on an internal retention device to prevent pipe or tubing separation