Plumbing Part 5

100問 • 1年前

問題一覧

under what condition might a single family dwelling with an existing private sewage disposal NOT be required to connect to a new public sewer

when there is no hazard, nuisance, or unsanitary condition associated with the existing private system

which of the following is unlawful to discharge into a public or private sewage disposal system

ashes, cinders, solids, rags, flammable, poisonous, explosive liquids or gases oils and grease

what is the prohibited from discharge into any extra genus system

rainwater, surface water or subsurface water

what type of wastewater grinder is specifically prohibited from connecting to a private or public sewage disposal system

commercial food waste grinder

what is the minimum diameter (in mm) for any building sewer,

150 mm

what is the minimum uniforms low required for building sewers, express as percentage

under what condition might a smaller slope to the standard 2% be permitted for

when impractical due to depth of the street sewer,structurally features or adverse building arrangement

what is the minimum distance in meters a building sewer should be installed from the outer phase of any building foundation

0.6 m

what is the minimum distance of building sewer should be from water supply well

15.2 m

what is the minimum distance of buildings where should be from the steams

30 m

what is the minimum distance of building sewer should be from domestic supply pipes

0.30 m

what is the minimum distance a building sewer should be from a public water main

0.30 m

if a building sewer is laid in the same trench as a water pipe (not approved for in-building uses), what is the minimum vertical distance of water pipe must be above the sewer pipe

0.30 m

what is the minimum horizontal distance to water pipe must be from the sewer if it is placed on a solid shelf in a same trench

0.30 m

if water pipes cross a sewer for drainage pipe (of clay or non-building approved materials), what is the minimum vertical distance the water pipe must be above the sewer

0.30 m

what is the minimum distance between the well and the septic tank

100 m

what is the factor determining the area of the disposal field

the type of soil found in the excavation

in a system with a seepage pit, where should the filter material in the trenches terminate

1.5 m from the pit excavation

what should be the condition that the pipe extending from the filter material to the seepage pit

it should be watertight

a loosely blind excavation in the ground that receives septic tank discharge

seepage pit

what primary determines the capacity of a seepage pit

the quality of liquid waste and the character and porosity of the surrounding soil

what is the minimum compressive strength required for brick lining in the seepage pit

17225 kPa

how should multiple seepage pits connected

through a watertight connection, possibly via a distribution box

what is the minimum excavated diameter for circular seepage pit

2.2 m

under what condition might a temporary permit is issued for a cesspool

in a public sewer will be available within 2 years and soil and groundwater condition are favorable

besides temporary use,what is another valid to use for a cesspool

as an overflow facility in conjunction with an existing cesspool

what is a privy

the oldest form of organic waste disposal, consisting of a concrete vault for rosie which collection

when is an interceptor required for liquid waste disposal

when liquid wastes contain excessive amounts of grease, garbage, flammable wastes, sand, or other ingredients that may affect a private sewage disposal system

what is the purpose of an interceptor

to prevent harmful substances from entering a private sewage disposal system

where can we waste from interceptor be discharge

to a septic tank, other primary system, or into a separate disposal system

what is the minimum clear horizontal distance required of buildings or structures from: • building sewer: ______ • septic tank: ______ • disposal field & seepage pit or cesspool: ______

0.6 m, 1.5 m, 2.4 m

what is the minimum clear horizontal distance required of property line and joining private property from: • building sewer: ______ • septic tank & disposal field: _______ • seepage pit or cesspool: ______

clear, 1.5 m, 2.4 m

what is the minimum clear horizontal distance required of water supply well from: • building sewer & septic tank: _____ • disposal field: _______ • seepage pit or cesspool: ______

15.2 m, 30.5 m, 45.7 m

what is the minimum clear horizontal distance required of streams from: • building sewer, septic tank & disposal field: _______ • seepage pit or cesspool: ______

15.2 m, 30.5 m

what is the minimum clear horizontal distance required of trees from: • septic tank: ______ • seepage pit or cesspool: ______

3 m

what is the minimum clear horizontal distance required of seepage pits or cesspools from: • septic tank & disposal field: _______ •seepage pit or cesspool: ______

1.5 m, 3.7 m

what is the minimum clear horizontal distance required of disposal field from: • septic tank & seepage pit or cesspool: ______ •disposal field: _______

1.5 m, 1.2 m

what is the minimum clear horizontal distance required of on site domestic water service line from: • building sewer: ______ • septic tank, disposal field & seepage pit or cesspool: ______

0.3 m, 1.5 m

what is the minimum clear horizontal distance required of pressure public water main from: • building sewer, septic tank, disposal field & seepage pit or cesspool: ______

3 m

for what type of development are sewage treatment plans (STPs) now being used in place septic tanks or municipal sewages

large developments

what is the key difference between STPs septic tanks in term of their operation

STPs use mechanical equipment, what's septic tanks are primary gravity-fed

which of the following is NOT a typical feature of an STP

a gravity-fed filtration system

what is the purpose of the sludge waste pump in an STP

to aid and clarifying wastewater

in the active sludge process, what is the primary purpose of the first phase

to get rid of heavy materials using filter houses

what level of purity is achieved in the water produced by the activated sludge process

99-99.5%

what is the another name for that "Trickling Filter Process"

the percolating or sprinkling filter system

what is a significant drawback of the trickling filter process

it requires a large ground area for its construction

what is NOT an acceptable use for rainwater piping

soil, waste and vent pipes

what is the typical rainfall intensity used for size in down spouts and cutters in Metro Manila

102 mm/hr

sa maximum allowable ratio of size of rectangular rainwater pipes, compared to the equivalent round pipe

3:1

what is a requirement for downspouts in high-rise buildings

they must be made of stronger pipe materials to resist high hydrostatic pressure

what type of strainer is typically used for floor drains

dome-type strainer extending 102 mm above the roof surface

what is the minimum total net inlet area of a dome-type roof drain strainer

1 1/2 times the outlet pipe area

is the minimum net inlet area of an approved flat surface roof deck strainer

twice the outlet pipe area

how are roof drains passing through building interiors made watertight

using a C.I. drain with an integrally-cast waterstop ring and suitable flashing material

aka "the separate system", it brings collected water directly to the water reservoirs

independent system

combines storm water with sanitary waste

combine system

drainage network that does not use any group gutters or catch basis, without using any roof cutters or down spouts also when rainwater are collected in cisterns

natural system

storm drain locations

inside, outside, overhead

usually located along the entire perimeter of the roof

gutter

located every 8 to 10 meters and at every corner of the roof, but to avoid clogging pipes, it is best to locate them every 4 to 6 meters

downspouts

used to prevent clogging of pipes

the strainer or roof drain

downspouts should terminate, it is made of concrete hollow blocks and connected to one another via the storm line

catch basin

serve as drains for intermediate surface

area drain catch basin

connect to each catch basin and delivers water to the sewers and street via gravity

storm line

most popular and generally specified material for drainage installation it is durable and convenient conveniently installed

cast iron soil pipe

what is the commercial length of cast iron soil pipe

600 cm

what are the ranges diameter of cast iron soil pipe

50-150 mm

a type of cast iron soil pipe, generally used for building installations

SV type

a type of cast iron soil pipe, for extra duty for underground installations

XV type

what are the 4 varieties of cast iron soil pipe

standard pipe, single hub, double hub, hubless

made of an alloy of cast iron and silicon, installed where acid waste were being discharged. it is pretty and must be supported at every 1.5 m interval

acid resistant cast iron pipe

made of asbestos fiber important cement, it is used as a soil and waste pipe

asbestos pipes

cheapest and light in weight, slightly flexible and could takes light soil movement without danger of crackling or pulling out of its joints. maybe softened or damaged by excessive hot water of chemical flow

bituminous fiber sewer pipe

one of the oldest materials used for sewer lines, it is highly resistant to most acid but brittle

vitrified clay pipe

highly resistant to acid, but poisonous and injurious, therefore it's not recommended to convey water for human consumption

lead pipe

made out of mild steel unexpected to last 15 to 25 years, subjected to deposit of salt and lime which can cause friction head loss. comes in several commercial sizes: -10 (3/8") -13 (1/2") -20 (3/4") -25 (1") -32 (1 1/4") -38 (1 1/2") -50 (2") -75 (3") -100 (4")

galvanized steel pipe

better than still five for plumbing installation and resistant to acid waste

galvanized wrought iron pipe

durable and extremely corrosive resistant it is easy to install and has smooth interior surface

copper pipe

it's the heaviest copper pipe and used for underground

k-type

is a light copper pipe, it is both rigid and flexible form used for residential water supply line and radiant heating installation

l-type

it's a tiniest copper pipe rigid and form used for smaller water supply lines and radiant heating installation

m-type

it's a most expensive pipe, made of an alloy of zinc (15%) copper (85%), it is resistant to asset and has smooth interior surface

brass pipe

develop in germany in 1985 and most are produced by synthetic resins

plastic or synthetic pipe

polyvinyl chloride (PVC), chlorinated polyphenyl chloride (CPVC),unplasticized polyvinyl chloride (UPVC), acrylonitrile butadiene styrene (ABS), Polypropylene (PP), styrene rubber plastic (SR) are example of what type of plastic pipe

rigid type

polyethylene (PE)- coil from; 30 m long & polyethylene (PE)- coil from; 30 m - 150 m long, are example of what type of plastic pipe

flexible types

perform pressure test and joints and connection of pipes and fittings to ensure gas tight and water tight connection

tightness

for bell and spigot cast iron soil pipe and other similar joints.

caulked joints

wrap an oakum for him around the spigot neck; drive the oakum into the bottom of the hub using the yarning iron compressed firmly making a 20 to 25 mm clearance from the top of bell

packing oakum

for iron pipe size (IPS), pipe and fitting shall be standard topper pipe threads, threats on plastic pipe shall be factory cut or molded, lubricate clean out plugs and caps with water soluble, non-hardening material

threaded joints

for joints of copper tubing, soldiers and fluxes with lead content which exceeds 0.002 are prohibited in piping system used to convey portable water

solder and sweat joints

print five with emery cloth or fine sandpaper, apply non corrosive flux are soldering paste, hit the fit think with a propane torch and apply again non-corrosive flux or soldering paste and wrap soldered joint with wet rags

soldiering joints

joints in lead pipe or fitting between led piper fitting and press or copper pipe, ferrules, solder nipples or traps. Joints between lead pipe and cast iron steel wrought iron pipe shall be made by means of a caulking ferule or soldering nipple

wiped joints

for soft copper, water tubing shall be expanded with a proper flaring tool

flared joints

prohibited on building sewers

cement mortar joints

shall be a sleeve coupling all the same composition as the pipe or of other approved materials, and sealed with neoprene rubber rings or joined by an approved type compression coupling

asbestos cement sewer pipe joints

shall be lapped in assembly shall be fused together to form a uniform weld at least a thick as lead sheets being joining

burned lead joints,

label the parts

Gutter, Roof Drain, Leader, G.I Strap, Shoe, Catch Basin

Name the image

the strainer or roof drain

100

Oldest form of disposal of waste. Consists of a vault constructed of concrete for the collection of raw sewage

Privies

Building laws Part 1

Mari Alberca · 100問 · 1年前

Building laws Part 1