2024 Plumbing Year 3 Midterm and Final Exam New Latest Version with All Questions and 100% Correct Answers
2024 Plumbing Year 3 Midterm and Final Exam New
Latest Version with All Questions and 100% Correct
Answers
When potable water is discharged into the drainage system, it shall be through an airgap no less than inch(es). ———- Correct Answer ——— 1
The type of backflow preventer required for a particular application is specified by
. ———- Correct Answer ——— The local code or health department
For a water closet, the first flushometer on a branch line is valued at [a] WSFUs, the
third is valued at [b] WSFUs and the sixth on the branch is valued at [c] WSFUs. ———
- Correct Answer ——— [a] – 40
[b] – 20
[c] – 10
For urinals, the first flushometer on a branch line is valued [a] WSFUs, the second is
valued [b] WSFUs and the fourth is valued at [c] WSFUs. ———- Correct Answer ——– - [a] – 20
[b] – 15
[c] – 8
To treat a salty flavor in the water, the usual method is to ——— Correct Answer ——— - install a reverse osmosis system
Turbidity in water is commonly treated by using ——— Correct Answer ———- a
diatomaceous earth filter
If using a solution of at least 50 parts per million of chlorine, you let the system stand for
——— Correct Answer ———- 24 hours
The minimum pipe size for any flushometer valve of any category is __. ———-
Correct Answer ——— The same as the valve inlet
The two categories of flushometer valves are [a] and [b]. ———- Correct Answer ———
[a] – Urinals
[b] – Water closet
Water lines within a building shall be tested at not less than [a] with potable water. Or is
shall be tested with [b] psi of air pressure for not less than [c] minutes. ———- Correct
Answer ——— [a] – Working pressure
[b] – 50
[c] – 15
When sizing a water supply system, you can assume that there will be enough pressure
in the system if adequate pressure is provided to . ———- Correct Answer —–
—- The highest fixture in the system
T/F An atmospheric vacuum breaker may be installed with a valve downstream. ———-
Correct Answer ——— False
An impairment of the quality of the potable water to a degree that does not create a
hazard to the public health but which does adversely and unreasonably affect the
aesthetic qualities of such water for domestic use Also defined as Low Hazard. ———-
Correct Answer ——— Pollution
When branch lines come together with the same categories of flushometer valves,
_. ———- Correct Answer ——— The fixture unit assignment for the
common pipe will not be the total of those two branch lines
When fixture unit values are calculated for branch lines with flushometer valves, the
valve of the next valve in line in relation to the first valve. ———- Correct
Answer ——— Decreases
Codes require that reverse-osmosis systems drain into the water system through a(n)
___. ———- Correct Answer ——— air gap
In an ultraviolet-light system, the lamps’s efficiency will be reduced by _. —–
—– Correct Answer ——— Cold water
A commonly used filter in municipal water treatment systems is ___. ———-
Correct Answer ——— Diatomaceous earth
Resin pellets in a ion-exchange system are saturated with . ———- Correct
Answer ——— Sodium
Scale occurs when the chemical structure of calcium, magnesium, or sodium atoms is
changed by _. ———- Correct Answer ——— Heat
The process of scouring water to remove particles and chemicals is called
_. ———- Correct Answer ——— Filtration
The two tanks in a typical residential ion-exchange system are . ———-
Correct Answer ——— The resin tank and the brine tank
After a newly installed water supply system has been flushed and disinfected, water
samples should be taken and laboratory-tested for __. ———- Correct
Answer ——— Harmful bacteria
Distillation systems are effective at eliminating _. ———- Correct Answer —-
—– Hardness
In the above drawing, what is the minimum water meter size? ———- Correct Answer —
——- 1 – 1/2″
A water conditioner should be installed if the iron content tests higher than
___. ———- Correct Answer ——— 0.2 ppm
An unpleasant smell from water is often due to the presence of _. ———-
Correct Answer ——— Hydrogen sulfide
Iron test kits can also be used to detect ____. ———- Correct Answer —–
—- Manganese
Most objectionable water tastes and odors, other than metallic flavors, and saltiness,
can be eliminated by using a(n) _. ———- Correct Answer ———
Activated carbon filter
Treat the water supply system if testing reveals sulfur content greater than
_. ———- Correct Answer ——— 1 ppm
Water contaminated with iron and sulfur is often referred to as _. ———-
Correct Answer ——— Black water
The amount of hardness in one grain is _. ———- Correct Answer ———
17.1 ppm
The principle of osmosis is the solutions tend to seek _. ———- Correct
Answer ——— Equilibrium
An example of a highly effective adsorbent material is . ———- Correct
Answer ——— Activated carbon
A mathematical process used to accomplish a specific task is known as . ——
—- Correct Answer ——— Applied mathematics
Combustion air ducts shall . ———- Correct Answer ——— Serve a single
space
Combustion air ducts that terminate in an attic shall . ———- Correct
Answer ——— Not be screened
Combustion air supplied by using the “standard method” requires a minimum volume of
. ———- Correct Answer ——— 50 cu ft per 1,000 btu/hr
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5,000
The History of plumbing can be traced back to _ years to the Babylonians
Aqueducts, Baths
The ancient Romans were famous for their _ and public _
Storm
In Western Europe, sewers were constructed in some areas to help control _ water
True
London’s cholera epidemic in the early 1800s was traced to the water supply
In the mid-1800s
When did plumbing as we know it in the US begin to develop?
Roman
The _ Empire was the first to provide large numbers of its citizens with plumbing
True
The Black Plague was directly connected to the lack of sanitary waste disposal
Cholera
Disease traced back to contaminated drinking water
Dark Ages
400-1000 CE
Black Plague
Caused the death of 25 million people
Cholera
A _ epidemic in 1854 killed five percent of Chicago’s population
Most of Chicago’s sewage was dumped into the Chicago river, which flowed into Lake Michigan. Since the lake was the source of drinking water for the city, the water supply became contaminated
Why was Chicago’s water supply contaminated in the mid-1800s?
Registered
A New York law passed in 1881 required that plumbers be _
Sewer Gas, Traps
Early Attempts to install plumbing indoors failed because _ escaped into the house even though — were installed
Venting
The general idea of _ drain/waste piping systems was first used in New York in 1874
1/2″
What size pipe was first used to vent traps in New York City?
Drains
The Greeks’ major contributors to plumbing was the development of bathtubs with _
Asphalt
Bitumen is a natural type of _ that was used to make clay floors waterproof in about 3000 BCE
True
The Romans used lead to make pipe and line sinks and other fixtures
Lead
Plumbum is the Latin word for _
Cast iron pipe
In 1562, _ was used to supply water to a fountain in Germany
Copper pipe, shoe
Early bathtubs were made of _ in the shape of a _
Showers
Evidence of _ has been found in the ruins of Egyptian cities that date back to 1350 BCE
Alexander Cummings
In 1775, _ of England patented the water closet that became the prototype for today’s toilets
William E. Sloan
In 1906, — applied for a patent for the flush valve, which made possible the tankless toilet used in most public restrooms
Firefighting
Boston set up the first waterworks in the US in 1652 to supply water for _ and domestic use
Edwin Ruud
The automatic storage water heater was invented by _
True
Philadelphia became the first city in the to select cast iron for water mains
Zinc
Galvanized pipe is coated with _ metal to prevent rust
False
PVC pipe began to be manufactured during the 19th century
Ditch Witch
The first compact trencher was called the _
1971
Occupied Safety Health Act
1974
Safe Drinking Water Act
1990
Americans with Disabilities Act
National Plumbing Standard
Water efficiency regulations for plumbing fixtures were established by the _
True
Early Christians considered bating to be unsaintly.
Cholera, dysentary, Typhoid
Three diseases caused by contaminated water and lack of sanitary waste disposal in 19th century
330 BCE
The first Roman aquedeucts
False
Outhouses gained acceptance in the early 19th century
1911
First one piece recessed bathtub was manufactured by Kohler in _
Robert Frame, Fred Adee, Charles Neff
Involved in development of siphonic wash-down water closet in early 20th century
1942
First single-handle mixing faucet was patented by Al Moen in _
Wood
Pipes for Boston’s waterworks in 1652 were made of _
New Jersey
The first cast-iron pip was manufactured in _
Light-gauge copper tube and fittings
The development of _ in the 1930s allowed for use of copper for water and DWV in residential buildings
Daniel C. Stillson
Patent for the first pipe wrench in 1870
Roto Rooter
The first sewer cleaning machine
Plumbing enterprises
Employs plumbers
Government agencies
Employs plumbers
Plumbing education
Employs plumbers
Plumbing organizations
Employs plumbers
Plumbing Unions
Employs plumbers
Plumbing contractors associations
Employs plumbers
Enterprises
Plumbing _ serve needs of community, offers greatest opportunity as entry point for beginners
True
Plumbing enterprises include retailers and installation repair services
Functions of government agencies that hire plumbers
Licensing, reviewing plumbing and architectural plans, issuing permits, inspecting installations
True
Plumbing educators are generally master plumbers with many years of experience
Unions
Plumbing _ provide benefits to plumbers, and are source of employees for contractors
Five
Length of most apprenticeships
False
Journeyman plumbers are qualified as contractors
Five
Master plumbers usually required to work for _ years as a journeyman before taking test
Supervisors
responsible for directing work of group of workers
Superintendents
oversee large jobs and have supervisors working under them
Estimators
Responsible for estimating the material and cost of job
Contractors
Master plumbers who hire plumbing personnel to work for them
Most important function of a plumbing supply dealer
Deliver needed materials to job site at the time they are needed
True
One of most important skills that a plumber must acquire is ability to visualize completed system before work is started
Master plumbers
Only plumbers who can obtain plumbing permits
Thinking skills and personal qualities
Three part foundation fundamental to education including basic skills
Reading, writing, mathematics, listening, and speaking
Five skills essential for success in workplace
Measurment
mathematics-related skill most important to plumbers
listening skills
receiving, attending to, interpreting, and responding to verbal messages
Foul language, sexist comments
Types of speech to avoid in workplace
Six thinking skills
reasoning, decision making, visualization, problem solving, creative thinking, and knowing how to learn
Efficient and effective work
Enacted by a plumber’s confidence.
sociability
has the ability to get along with diverse groups
self-management
exercising self-control or self-discipline
integrity
honesty, trustworthiness, dependability
Resources a plumber must effectively manage
time, equipment, tools, materials, supplies
Punctual
arrives and ready to work on time
dependable
follows through on assignments and suggestions for improvement
honesty
truthful with coworkers and supervisors
motivation
gives a fair day’s work for a fair day’s wage
technical ability
performs work with limited ability
leadership
guides others toward completion of work
quality of work
work consistently meets standards
cooperative
works willingly with other plumbers, supervisors and such
False
a family member is a good reference
networking
finding employment opportunities through other people, such as friends.
true
plumbing suppliers are a source of job leads
portfolio
provides documentation of work experience and may contain plans, sketches, photographs, and a list of jobs the plumber has completed
Benefits of part-time, self-employed plumbing
Obtain management experience, develop client base, establish reputation, arrange supply accounts, how to report expenses and income involved in record keeping
Lawyer and accountant
People important to a business owner
Areas of responsibility for government officials involved with plumbing codes
Inspect plans, inspect work during construction, license plumbers
Three part foundation of knowledge skills for success
Basic skills, thinking skills, personal qualities
Basic skills
reading, writing, mathematics, listening, and speaking
Thinking skills
reasoning, decision making, visualization, problem solving, creative thinking, and knowing how to learn
personal qualities
responsibility, self-esteem, sociability, self management, and integrity
Resources
competent use of time, materials, supplies
systems
involving understanding of interrelationships of components
technology
select and use tools and equipment properly
six questions to know if you have all info about a job
who, what, when, where, how, why?
difference between self-employment and running a business
employees
True
Safety is often neglected in plumbing
Carelessness, lack of knowledge, and substance abuse
Contributes to accidents on the job
True
Good housekeeping means keeping the work area clean and orderly
True
safe work habits are formed by the worker’s attitude
True
proper clothing reduces the risk of accident or injury
90%
Percentage of preventable accidents that could have been avoided by wearing proper eye protection according to The National Safety Council
OSHA
Corrective lenses must meet whose safety standards?
Side Shields
Corrective lenses must have these on the job.
False
Loose clothing that is more comfortable is acceptable on the job
False
Pants with cuffs are acceptable on the job
Straight
Your back should be _ when lifting
Leg
Your _ muscles should be used when lifting
True
Repeated strains while lifting can create permanent damage
Hand Slings
Can make carrying large pieces of pipe safer ans easier
Misusing
_ a ladder is one of he most common reasons for ladder injuries
Abusing
_ climbing equipment is one of the most common reasons for injuries.
True
Stepladders are often used for indoor work
Safe load
The duty rating of a ladder is its max _ capacity
Conduct
Aluminum ladders can _ electricity and should not be used near electrical wire
75 degree angle from the ground
extension ladders should placed at what angle from the ground?
2nd step from the top
Never go above this step of a ladder when working
45″
Scaffolds 4′ to 10′ high and less than _ wide must have guard rails
True
Never place a scaffold plank on top of guard rails
Grounded
Electrical tools should be properly _
Ground Fault Circuit Interrupter
GFCI
False
tool guards may be removed for convenience
potential fire hazard
compressed gas cylinders
potential fire hazard
solvents
potential fire hazard
liquid fuel
Class D extinguisher
Combustible metal fires
Class C extinguisher
Electrical equipment fires
Class B extinguiser
Flammable liquid fires
Class A extinguishers
Ordinary combustible material fires
Excavating and trenching work safety
Protecting existing underground utilities
Excavating and trenching work safety
protecting workers in trenches
Excavating and trenching work safety
using hand tools safely
Fall protection
Fall restraint
Fall protection
Fall arrest
Common sense
Hand tool safety
True
Mushroomed heads on chisels and similar tools must not be used
True
Many construction materials are hazardous
Health and physical hazards
Information required to be available to workers
True
Chemical producers are required to label all containers of hazardous materials to identify chemicals and provide warnings
Safety Data Sheet
provides detailed info on each chemical in a product
TLV
Threshold limit value
PEL
Permissible exposure limit
TWA
Time weighted average
STEL
Short term exposure limit
How hazardous materials enter the body
inhaling
How hazardous materials enter the body
ingesting
How hazardous materials enter the body
injecting
How hazardous materials enter the body
absorbing
Respirator
protects workers from inhaling hazardous chemicals
False
one type of respirator works for all conditions
Banana oil
Vials of this substance are used to test the fit of a respirator
Eye protection
Full-face respirators provide what?
Face
Full-face respirators are less likely to leak where?
True
check respirators for leaks or wear before and after each use
False
hearing loss happens only with exposure to very loud sounds
19.5%
the minimum acceptable oxygen level according to NIOSH
No effect, minimum standards
19.5% oxygen
Impaired judgement and breathing
16% oxygen
Faulty judgement, rapid fatigue
14% oxygen
Difficult breathing, death in minutes
6% oxygen
True
Brazing and soldering can generate carbon monoxide in confined spaces
Forced ventilation
required at a minimum when working in a confined space
Hep B, HIV
The two most common bloodborne pathogens
Measuring tools are used to measure
Length, Height, diameter, levelness, and plumbness
Layout tools are used to produce accurate _ _ or any other marking
Lines and Circles
True
Common lengths of long steel measuring tapes are 25′, 50′, 100′, 200′, and 300′
Plumber’s rules are special folding rules available in _ and _
6′, 8′
Combination squares can measure _ angles
both 90 and 45 degree
Three marking tools for various types of pipe
yellow keel, soapstone, pencil
Plumb is to vertical as level is to
horizontal
True
chalk lines are used to lay out long, straight lines on hard and rather smooth surfaces
A _ is an instrument that has a pencil in one leg and is used too lay out circles and arcs.
Compass
Fasle
Files are toothed cutting tools that have one common cross-sectional shape
For best results, the wood chisel is ground to a _ angle
25 degree
A cold chisel is ground to a _ angle
60 degree
Plumber’s augers are available in diameters of _ through _
3/4″, 1-1/2″
Multispur bits, plumbers augers, and _ bits are used for drilling holes
Spade
The operation of _ removes burr that is formed inside a pipe during cutting
Reaming
A _ threading die is a special die used for threading galvanized steel pipe
pipe
_ are sometimes needed to hold plumbing parts while operations are performed on them
Vises
To protect pipe dies when cutting threads, _ is applied to the threads
Cutting oil
True
The three-way pipe die and stock permits three diameters of pipe to be threaded with a single tool
A pipe wrench is used to _ threaded pipe during assembly.
hold or turn
Three basic pipe wrench designs
Straight, end, offset
A __ wrench is used to assemble chrome plated pipe so no damage is done to it
strap
A _ vise is the most common holding device used by plumbers
pipe
A _ hammer is used for driving or pulling nails and for tapping a wood chisel
carpenter’s
A _ screwdriver has two straight and two phillips blades
4-in-1
Plumbers can use all of these for leveling
level, straightedge, chalk line
Also known as a builder’s level
Surveyor’s level
Mounts on a tripod
Builder’s level
A builder’s level rotates
360 degrees
Stadia Rod
graduated stick used to find elevations
Rate of fall
difference in elevation divided by length of run
Horizontal cross hair in builder’s level telescope
used to make reading of measurement.
Automatic level
Self-adjusting to maintain a horizontal line of sight.
Laser
instrument that amplifies or strengthens light, projecting it as a thin beam
Long-term exposure to laser light beam
may cause eye injury
A worker using a laser
Must be qualified to operate such equipment
An unattended laser
Should be shut off
Beam Target
What does the laser beam strike when projecting through a pipe during installation
Hydraulics
The study of the characteristics of fluids
The weight of one cubic foot of water
62.4 lbs
As water depth increases
Water pressure increases
Calculate psi at base of a tower
62.4 divided by 144 times the depth of the tower
Pressure in psi at base of a 175′ tower
75.83
Pressure head
Pressure available at some point in the water system measured by the depth of a column of water above the point where the measurement is taken
A 1′ column of water exerts
.43 psi
The effects of friction on water pressure and flow
Must be considered by plumbers
Streamlined flow
produces less friction
Turbulent flow
produces more friction
Grade L copper pipe
Comparing schedule 40 plastic pipe and grade l copper, which has less head loss?
Water hammer
Can cause pipes to vibrate and possibly burst
Pneumatics
The study of compressible gases
Upward bend
Likely to cause an air lock in a low-pressure piping system that blocks flow
False
Under normal conditions a sanitary or storm system is completely full of water
Scale drawings
May use fractions of inches to represent feet
Prints
Drawings are frequently called:
May use prints
A building official, contractor, or a supplier
Plot Plan
Location of structure on the lot
Elevation Drawings
Exterior appearance
Floor Plan
Describes arrangement of rooms
Foundation plan
Describe size and shape of footing
Detail drawings
Construction of walls, stairs, and doors
Specifications
A set of instructions that provide info about materials and work quality
Vertical distances
Indicated by a section view for DWV piping
Feet and inches
Dimensions usually used in architectural drawings
6′-11″
83 inches written on prints
Symbols used to indicate limits of particular dimensions
Arrowheads, dots, and diagonal lines
Cast Iron
CI
Clean Out
CO
Cold Water
CW
Hot Water
HW
Dish washer
DW
Floor Drain
FD
Hose Bibb
HB
Galvanized Iron
GI
Plastic
PLAS
Plumbing
PLBG
Lavatory
LAV
Title block
to find correct scale of drawings
Soldered or cemented
symbol with a line and circles on each end
1/4″ or 1mm=50mm
Scale customarily used in building plans
A wall on three sides
A recessed tub has what?
Three types of piping sketches
Plan view, two-dimensional, and isometric
plan view
piping sketch frequently drawn on the job site
Plan view 1
Locate known points
Plan view 2
Lightly draw pipe
Plan view 3
Indicate fitting symbols
Plan view 4
Darken lines and add notes
120 or 30 degrees
Angles where lines converge on an isometric axis from horizontal
Horizontal
Grid paper that is extremely helpful in making an isometric sketch
Natural fiber ropes
used extensively in construction
Manila rope
Made from the fiber of a wild banana plant
American Hemp Rope
80% as strong as no. 1 manila rope
Sisal Rope
60% as strong as no. 1 manila rope
Cotton Rope
50% as strong as no. 1 manila rope
Manufactured fibers from which ropes are made
Nylon, Rayon, Glass
Dacron Fibers
Stronger than hemp
Resist rot and deterioration
Synthetic fiber ropes
What not to do with your ropes
Run across sharp surfaces, allowing to freeze
Hoist standard
Attached to scaffold and permits loads to be lifted by a person at the base of the scaffold
Winch Crane
Hoisting device that is used in large buildings to lift large pipes
Lever hoist
hoisting device that has a ratchet mechanism that causes it to be operated slower than other devices
Paint
what should you not put on a wooden ladder
Extension ladder
has two or more sections that can be extended to adjust length
Stepladder
self supporting, non adjustable, and ranges from 4′ to 16′ in length
Articulated ladder
has hinged joints enabling it to be used in a variety of configurations
The health and safety of the people
minimum standards in buildings are specified to protect
Zoning laws
laws that regulate the type of structure that can be built in a given area
Separate
Within zoning laws, residential, office, and industrial activities are
Building codes
Control quality of building material, quality of work, an the number and type of exits
Separate from each other
Plumbing and electrical codes in a building code are almost always
False
enforcement of the plumbing code is almost always delegated to the national plumbing commission
Plans and specifications
When applying for a building permit, a contractor must submit two copies of what to a building inspector?
False
After a permit is obtained, a construction project will be inspected only after completion
Model codes
These were developed to provide a degree of standardization
A court order
If work being done does not meet codes, building officials can obtain what to stop work?
Local governments, architects, plumbers
All involved in the development of plumbing codes
Adopted by the local government
Before a model plumbing code can be enforced, it must be adopted by the local government
BOCA Basic Building Code
Building Officials ad Code Administrators international Inc.
ICBO Plumbing code
International Conference of building Officials
One-and Two-Family Dwelling Code
Council of American Building Officials
Standard Plumbing Code
Southern Building Code Congress International Inc.
Uniform Plumbing Code
International Association of Plumbing and Mechanical Officials
False
Plumbers have the authority to modify code to meet their needs
Definition of terms used, requirements for plumbing fixtures, requirements for the design of vents
Well-written code components
Three stories
The International Residential Code (IRC) is applicable to plumbing work in townhouses not more than __ in height with a separate means of egress.
101.2
The International Residential Code (IRC) is applicable to plumbing work in townhouses not more than three stories in height with a separate means of egress.
Specifically adopted
The provisions of the appendices do not apply unless __.
101.2
The provisions of the appendices do not apply unless specifically adopted
Cost
In order to safeguard life, health, and property, the IPC does not regulate __
101.3
In order to safeguard life, health, and property, the IPC does not regulate cost
Specific
Where different sections of code specify diff requirements, the __ requirements shall apply
102.1
Where different sections of code specify diff requirements, the specific requirements shall apply
A hazard to property
Existing plumbing systems must be brought into compliance with IPC if system is __
102.2
Existing plumbing systems must be brought into compliance with IPC if system is A hazard to property
More specific
Where code provisions conflict with the referenced standard, the __ provisions shall apply
102.8.1
Where code provisions conflict with the referenced standard, the more specific provisions shall apply
State the reason for disapproval in writing to the applicant
Where the code official finds that a proposed alternative material does not comply with the intent of the code provisions, the code official shall __
105.2
Where the code official finds that a proposed alternative material does not comply with the intent of the code provisions, the code official shall State the reason for disapproval in writing to the applicant
research reports
for materials not specifically covered by the code, supporting data necessary to verify compliance with with the code must include
105.2.1
for materials not specifically covered by the code, supporting data necessary to verify compliance with with the code must include research reports
An approved agency
Tests performed by __ may be required by the code official where there is insufficient evidence of code compliance
105.3.2
Tests performed by an approved agency may be required by the code official where there is insufficient evidence of code compliance
as required for public records
required department records shall be retained
105.3.3
required department records shall be retained as required for public records
chief appointing authority
the code official shall be appointed by the
103.2
the code official shall be appointed by the chief appointing authority
requirements
the prescribed portions of the standards referenced in the IPC and listed in CH 15 are considered
102.8
the prescribed portions of the standards referenced in the IPC and listed in CH 15 are considered requirements
required by state law
the code official shall require construction documents and specifications to be prepared by a registered design professional when
106.3.1
the code official shall require construction documents and specifications to be prepared by a registered design professional when required by state law
a code requirement should be waived
the board of appeals is not authorized to rule on an appeal based on a claim that
109.1
the board of appeals is not authorized to rule on an appeal based on a claim that a code requirement should be waived
2
construction documents for buildings more than __ stories in height shall indicate the materials and methods for maintaining the required fire resistance rating
106.3.1
construction documents for buildings more than 2 stories in height shall indicate the materials and methods for maintaining the required fire resistance rating
for testing plumbing systems
the code official may allow temporary connection to the utility source
110.3
the code official may allow temporary connection to the utility source for testing plumbing systems
that was issued based on inaccurate information
the code official is authorized to suspend or revoke a permit __
106.5.5
The code official is authorized to suspend or revoke a permit that was based on inaccurate information
the period required for retention of public records
where tests are required as evidence of compliance with the code, the test reports shall be retained for __
105.3.3
where tests are required as evidence of compliance with the code, the test reports shall be retained for the period required for retention of public records
Approved
When a plumbing permit is issued, the construction documents shall be stamped
106.5.1
When a plumbing permit is issued, the construction documents shall be stamped Approved
180
generally, one set of approved construction documents shall be retained by the code official for at least _ days following completion of the work
106.5.6
generally, one set of approved construction documents shall be retained by the code official for at least 180 days following completion of the work
0.025
sheathing or wrapping for corrosion protection of pipes must be at least __ inches thick
305.1
sheathing or wrapping for corrosion protection of pipes must be at least 0.025 inches thick
0.0575
when concealed piping requires protection against physical damage, plates shall be not less than _ inches thick
305.6
when concealed piping requires protection against physical damage, plates shall be not less than 0.0575 inches thick
3 inches
when excavating a trench for underground piping installations, rock shall e removed to a depth of at least _ below the bottom of the pipe
306.2.2
when excavating a trench for underground piping installations, rock shall e removed to a depth of at least 3″ below the bottom of the pipe
as determined by local jurisdiction
the minimum burial depth for a building sewer is __
305.4.1
the minimum burial depth for a building sewer is as determined by local jurisdiction
loose soil free from rocks or frozen material
where the bedding for piping installed in a trench consists of backfill, __ is an approved material
306.3
where the bedding for piping installed in a trench consists of backfill, loose soil free from rocks or frozen material is an approved material
6″
the initial backfill over pipe installed in a trench shall be in maximum _ layers of loose earth
306.3
the initial backfill over pipe installed in a trench shall be in maximum 6″ layers of loose earth
12
compaction is required for the first __ inches of backfill above a pipe installed in a trench
306.3
compaction is required for the first 12 inches of backfill above a pipe installed in a trench
a registered design professional
alterations to trusses require written approval of __
307.4
alterations to trusses require written approval of a registered design professional
corrosion
pipes passing through concrete walls require protection from __
305.1
pipes passing through concrete walls require protection from corrosion
2
shield plates required to protect piping installed through notches or bored holes in framing members shall extend a minimum of __ inches above sole plates and below top plates
305.6
shield plates required to protect piping installed through notches or bored holes in framing members shall extend a minimum of 2 inches above sole plates and below top plates
12
for water piping adjacent and parallel to a wall footing, and installed at a depth of 12 inches below the bottom of the footing, the trench shall be located not less than __ inches horizontally from the footing
307.5
for water piping adjacent and parallel to a wall footing, and installed at a depth of 12 inches below the bottom of the footing, the trench shall be located not less than 12 inches horizontally from the footing
international mechanical code IMC
the _ regulates piping materials that are exposed in plenums
307.7
the international mechanical code IMC regulates piping materials that are exposed in plenums
1 1/2″
where concealed copper piping passes through holes bored in wood studs, shield plates are not required if the bored holes are at least __ from the nearest edge of the studs
305.6
where concealed copper piping passes through holes bored in wood studs, shield plates are not required if the bored holes are at least 1 1/2″ from the nearest edge of the studs
2 pipe sizes
a pipe sleeve in a masonry foundation wall shall be at least __ greater than the pipe passing through the wall
305.3
a pipe sleeve in a masonry foundation wall shall be at least 2 pipe sizes greater than the pipe passing through the wall
third-party certification
materials used in plumbing systems must be listed by a __ agency
303.4
materials used in plumbing systems must be listed by a third-party certification agency
building traps
the approved methods for preventing rodents from entering a structure do not include __
304.2,3,4
the approved methods for preventing rodents from entering a structure do not include building traps
12
the minimum burial depth of exterior water service piping is __ inches below grade
305.4
the minimum burial depth of exterior water service piping is 12 inches below grade
36
where the frost line is established at 30″, water service pipe shall be installed a minimum of _ inches below grade
304.5
where the frost line is established at 30″, water service pipe shall be installed a minimum of 36 inches below grade
blocks
the code does not permit the use of __ to support and maintain the grade of drainage piping in a trench
306.2
the code does not permit the use of blocks to support and maintain the grade of drainage piping in a trench
clothes washer
a _ is permitted to discharge to an approved nonpotable water system
301.3
a clothes washer is permitted to discharge to an approved non potable water system
more restrictive
when there is a conflict between the requirements of the code and the manufacturer’s installation instructions, the _ requirements apply
301.7
when there is a conflict between the requirements of the code and the manufacturer’s installation instructions, the more restrictive requirements apply
48″
When installed horizontally, 1 1/4″ polypropylene pipe shall be supported at maximum intervals of __
308.5
When installed horizontally, 1 1/4″ polypropylene pipe shall be supported at maximum intervals of 48″
sway bracing
a horizontal 4″ polypropylene water pipe with compression sleeve joints and two 90-degree turns requires __
308.6
a horizontal 4″ polypropylene water pipe with compression sleeve joints and two 90-degree turns requires sway bracing
3
One 1/2″ CPVC water pipe installed horizontally shall be supported at maximum intervals of __ feet
308.5
One 1/2″ CPVC water pipe installed horizontally shall be supported at maximum intervals of 3 feet
10
Support hangers for 10′ lengths of cast iron soil pipe suspended from a ceiling shall be spaced no more than __ feet
308.5
Support hangers for 10′ lengths of cast iron soil pipe suspended from a ceiling shall be spaced no more than 10 feet
2
PVC pipe installed vertically requires a guide installed midway between required supports for pipe sizes _ inches and smaller
308.5
PVC pipe installed vertically requires a guide installed midway between required supports for pipe sizes 2 inches and smaller
Flashing
which of the following is not specifically allowed for sealing around a pipe that passes through an exterior wall?
315.1
which of the following is not specifically allowed for sealing around a pipe that passes through an exterior wall? (Flashing)
12
When located in a flood hazard area, the top of a potable water well casing without a sealed cover shall extend not less than __ inches above the design flood elevation
309.2
When located in a flood hazard area, the top of a potable water well casing without a sealed cover shall extend not less than 12 inches above the design flood elevation
0.10
When performing an air test on cast iron drain, waste and vent (DWV) piping at a pressure of 5 psi, the test gauge shall be marked at maximum __ psi increments
312.1.1
When performing an air test on cast iron drain, waste and vent (DWV) piping at a pressure of 5 psi, the test gauge shall be marked at maximum 0.10 psi increments
10′
A water test on a building drain requires at least a __ head of water
312.2
A water test on a building drain requires at least a 10′ head of water
permit holder
the __ is responsible for performing tests on plumbing piping systems
312.1
the permit holder is responsible for performing tests on plumbing piping systems
the working pressure of the system
the water supply system test must hold a water pressure not less than __
312.5
the water supply system test must hold a water pressure not less than the working pressure of the system
1
condensate piping must maintain a minimum slope of not less than __ percent
314.2.1
condensate piping must maintain a minimum slope of not less than 1 percent
inside the primary drain pan
when required on downflow HVAC units to prevent damage from condensate, a water level monitoring device must be installed __
314.2.3.1
when required on downflow HVAC units to prevent damage from condensate, a water level monitoring device must be installed inside the primary drain pan
must be individually insulated
for piping bundles in manifold water distribution systems, hot water piping __
308.9
for piping bundles in manifold water distribution systems, hot water piping must be individually insulated
toilet facilities
on construction sites, __ are required for workers
311.1
on construction sites, toilet facilities are required for workers
15
water or air pressure tests on piping systems must be held for not less than _ minutes
312.2,3,4,5,6,7,8,9
water or air pressure tests on piping systems must be held for not less than 15 minutes
50
where water supply systems other than plastic are tested with air, the test pressure shall be not less than __ psi
312.5
where water supply systems other than plastic are tested with air, the test pressure shall be not less than 50 psi
sway bracing
horizontal 6″ PVC drainage piping installed above ground requires __ at a 45-degree change of direction
308.6
horizontal 6″ PVC drainage piping installed above ground requires sway bracing at a 45-degree change of direction
32
cross-linked polyethylene (PEX) piping installed horizontally requires hangers at intervals not greater than __ inches
308.5
cross-linked polyethylene (PEX) piping installed horizontally requires hangers at intervals not greater than 32 inches
10
the building sewer requires testing under not less than a __ foot head of water
312.6
the building sewer requires testing under not less than a 10 foot head of water
2
for other than prefabricated shower bases, a water test at least __ inches deep at the threshold is required for shower liners
312.9
for other than prefabricated shower bases, a water test at least 2 inches deep at the threshold is required for shower liners
3/4
the drain line size for condensate from evaporators and cooling coils shall be not less than __ inch internal diameter
314.2.2
the drain line size for condensate from evaporators and cooling coils shall be not less than 3/4 inch internal diameter
1 1/4
for a condensate drain line serving multiple units with a total equipment capacity of 80 tons of refrigeration, the pipe shall be not less than __ inch pipe diameter
314.2.2
for a condensate drain line serving multiple units with a total equipment capacity of 80 tons of refrigeration, the pipe shall be not less than 1 1/4 inch pipe diameter
3
an auxiliary drain pan shall be at least __ inches larger than the unit it serves
314.2.3
an auxiliary drain pan shall be at least 3 inches larger than the unit it serves
a conspicuous location
condensate drains separate from the primary drain line shall discharge to __
314.2.3
condensate drains separate from the primary drain line shall discharge to a conspicuous location
Construction Documents
All of the written, graphic, and pictorial documents prepared or assembled for describing the design, location and physical characteristics of the elements of the project necessary for obtaining a building permit
Sump
A tank or pit that receives sewage or liquid waste, located below the normal grade of the gravity system and that must be emptied by mechanical means
Fill Valve
A water supply valve opened or closed by means of a float or similar device utilized to supply water to a tank
Building sub-drain
That portion of a drainage system that does not drain by gravity into the building sewer
Developed Length
The length of a pipeline measured along the center line of the pipe and fittings
Indirect waste pipe
A waste pipe that does not connect directly with the drainage system, but discharges into the drainage system through an air break or air gap into a trap fixture, receptor, or interceptor
Drainage system
Piping within a public or private premise that conveys sewage, rainwater, or other liquid wastes to a point of disposal. A drainage system does not include the mains of a public sewer system or a private or public sewage treatment or disposal plant
Subsoil drain
A drain that collects subsurface water or seepage water and conveys such water to a place of disposal
Approved
Acceptable to the code official or other authority having jurisdiction
Area drain
A receptacle designed to collect surface or storm water form an open area
Stack
A general term for an vertical line of soil, waste, vent, or inside conductor piping that extends through at least one story with or without offsets
Pollution
An impairment of the quality of the potable water to a degree that does not create a hazard to the public health but does adversely and unreasonably affect the aesthetic qualities of such potable water for domestic use
Vacuum
Any pressure less than that exerted by the atmosphere
Fixture Branch
A drain serving two or more fixtures that discharges to another drain or to a stack
Flow Pressure
The pressure in the water supply pipe near the faucet or water outlet while the faucet or water outlet is wide open and flowing
Backflow preventer
A device or means to prevent backflow
Trap
A fitting or device that provides a liquid seal to prevent the emission of sewer gases without materially affecting flow of sewage or wastewater through the trap
Sanitary sewer
A sewer that carries sewage and excludes storm, surface, and groundwater
Temperature and pressure relief valve
A combination relief valve designed to function as both a temperature relief, and a pressure relief valve
Water outlet
A discharge opening through which water is supplied to a fixture, into the atmosphere (except into an open tank that is part of the water supply system), to a boiler or heating system, or to any devices or equipment that require water to operate but are not part of the plumbing system
Drainage fixture unit
A measure of the probable discharge into the drainage system by various types of plumbing systems.
Self closing faucet
A faucet containing a valve that automatically closes upon deactivation of the opening means
Unstable ground
earth that does not provide a uniform bearing for the barrel of the sewer pipe between the joints at the bottom of the pipe trench
combination fixture
a fixture combining one sink and laundry tray or a two or three compartment sink or laundry tray in one unit
Backsiphonage
the backflow of potentially contaminated water into the potable water system as a result of the pressure into the potable water system falling below atmospheric pressure of the plumbing fixtures, pools, tanks, or vats connected to the potable water distribution piping
Hot water
water at a temp greater or equal to 110 degrees Fahrenheit
Cross connection
any physical connection or arrangement between two otherwise separate piping systems, one of which contains potable water and the other either water of unknown or questionable safety or steam, gas, or chemical, whereby there exists the possibility of flow from one system to the other with the direction of flow depending on the pressure differential between the two systems
Anti-siphon
A term applied to valves or mechanical devices that eliminate siphonage
interceptor
a device designed and installed to separate and retain for removal, by auto or manual means, deleterious, hazardous, or undesirable matter from normal wastes, while permitting normal sewage or waste to discharge into the drainage system by gravity
flood level rim
the edge of the receptacle form which water flows
Ready access
that which enables a fixture, appliance, or equipment to be directly reached without requiring the removal of any panel, door, or similar obstruction and without the use of a portable ladder, step stool, or similar device
Vacuum Breaker
a type of backflow preventer installed on openings subject to normal atmospheric pressure that prevents backflow by admitting atmospheric pressure through ports to the discharge side of the device
water supply system
the water service pipe, water distribution pipes, and the necessary connecting pipes, fittings, control valves, and all appurtenances in or adjacent to the structure or premises
Building trap
a device, fitting, or assembly of fittings installed in the building drain to prevent circulation of air between the drainage system of the building and the building sewer
flush tank
a tank designed with a fill valve an flush valve to flush the contents of the bowl or usable portion of the fixture
trap seal
the vertical distance between the weir and the top of the dip of the trap
back flow connection
any arrangement whereby back flow is possible
leader
an exterior drain pipe for conveying storm water from roof or gutter drains to an approved means of disposal
fixture supply
the water supply pipe connecting a fixture to a branch water supply pipe or directly to a main water supply pipe
offset
a combination of approved bends that makes to changes in direction bringing one section of the pipe out of line but into a line parallel with the other section
non-potable water
water not safe for drinking, culinary, or personal use
back flow
pressure created by any means in the water distribution system, which by being in excess of the pressure in the water supply mains causes a potential back flow condition
quick closing valve
a valve or faucet that closes automatically when released manually or that is controlled by a mechanical means for fast-action closing
fixture drain
the drain from the trap of a fixture to a junction with any other drain pipe
rough-in
parts of the plumbing system that are installed prior to the installation of fixtures. this includes drainage, water supply, vent piping, and the necessary fixture supports and any fixtures that are built into the structure
vent system
a a pipe or pipes installed to provide a flow of air to or from a drainage system, or to provide a circulation of air within such a system to protect trap seals from siphonage and backpressure
branch
any part of the piping system except for the riser, main, or stack
grease interceptor
plumbing appurtenances that are installed in the sanitary drainage system to intercept free-floating fats, oils, and grease from waste water discharge. continuous separation is accomplished by air entrainment, buoyancy, and interior baffling.
PEMDAS
Parentheses, Exponents,
Multiplication, Division,
Add, Subtract
Area
Length time Width
Perimeter
2(L+W)
Circumference
pi times diameter
Area of a circle
pi times radius(squared)
Area of a triangle
height times base divided by 2
Area of a trapezoid
base plus base times height divided by 2
volume of a square or rectangle
length time width times height
volume of a triangular prism
height, times base, times length, divided by 2
volume of a trapezoidal prism
(b+B)ah/2
volume of a cylinder
pi times radius squared, times height
volume of a trough
pi times radius squared, times height, divided by 2
tempered water
water between 85 and 110 degrees Fahrenheit
Main
The principal pipe artery to which branches are connected
critical level
an elevation reference point that determines the minimum height at which a backflow preventer or vacuum breaker is installed above the flood level rim of the fixture or receptor served by the device
Aspirator
a fitting or device supplied with water or other fluid under positive pressure that passes through an integral orifice or construction causing a vacuum. aspirators are also referred to as suction apparatus, and are similar in operation to an ejector
roof drain
a drain installed to receive water collecting on the surface of a roof and to discharge such water into a leader or conductor
common vent
a vent connecting at the junction of two fixture drains or a fixture branch and serving as a vent for both fixtures
backwater valve
a device or valve installed in the building drain or sewer pipe where a sewer is subject to back flow, and which prevents drainage or waste from backing up into a low level or fixtures and causing a flooding condition
storm sewer
a sewer that coveys rainwater, surface water, subsurface water and similar liquid wastes
water distribution pipe
a pipe within the structure or on the premises that conveys water from the water service pipe or from the meter when the meter is at the structure, to the points of utilization
individual vent
a pipe installed to vent a fixture trap and connects with the vent system above the fixture served or terminates in the open air
approved agency
an established or recognized agency approved by the code official and that is regularly engaged in conducting tests or furnishing inspection services
plumbing
the practice, materials, and fixtures utilized in t he installation, maintenance, extension, and alteration of all piping, fixtures, plumbing appliances, and plumbing appurtenances within or adjacent to any structure, in connection with any sanitary drainage or storm drainage facilities, venting systems, and public or private water supply systems
water heater
any heating appliance or equipment that heats potable water and supplies such water to the potable hot water system
cleanout
an access opening in the drainage system utilized for the removal of obstructions. types of clean outs include removable plug or cap, and a removable fixture or trap
yoke vent
a pipe connecting upward from a soil or waste stack to the vent stack for the purpose of preventing pressure changes in the stack
conductor
a pipe inside the building that conveys storm water fro the roof to a storm or combined building drain
access cover
a removable plate, usually secured by bolts or screws to permit access to a pipe or pipe fitting for the purposes of inspection, repair, or cleaning
Rim
an unobstructed open edge of a fixture
potable water
water free from impurities present in amounts sufficient to cause disease or harmful physiological effects and conforming to bacteriological and chemical quality requirements of the public health service drinking water standards or the regulations of the public health authority having jurisdiction
public sewer
a common sewer directly controlled by public authority
Existing installation
any plumbing system regulated by this code that was legally installed prior to the effective date of this code, or for which a permit to install has been issued
plumbing appurtenance
A manufactured device, prefabricated assembly or an on-the-job assembly of component parts that is an adjunct to the basic piping system and plumbing fixtures
Bathroom group
a group pf fixture consisting of a water closet, lavatory, bathtub, or shower, including or excluding a bidet, and emergency floor drain or both
Waste
The discharge from any fixture, appliance, area, or appurtenance that does not contain fecal matter
Circuit Vent
A vent that connects to a horizontal drainage branch and vents two traps to a maximum of eight traps or trapped fixtures connected into a battery
building sewer
the part of a drainage system that extends from the end of the building drain and conveys the discharge to a public sewer, private sewer, individual sewage disposal system, or other point of disposal
Flow control
a device installed upstream from the interceptor having an orifice that controls the rate of flow through the interceptor and air intake (vent) downstream from the orifice that allows air to be drawn into the flow stream
vertical pipe
any pipe or fitting that makes an angle of 45 degrees or more with the horizontal
effective opening
the minimum cross-sectional area at the point of water supply discharge, measured or expressed in terms of the diameter of a circle or, if the opening is not circular, the diameter of a circle of equivalent cross-sectional area.
Riser
a water supply pipe that extends one full story or ore to convey water to branches or to a group of fixtures
water service pipe
the pipe from the water main or other source of potable water supply, or from the meter when the meter is at the public right of way, to the water distribution system of the building served
supports
devices for supporting and securing pipe, fixtures, and equipment
Drain
any pipe that carries waste water or water-borne wastes in a building drainage system
contamination
an impairment of the quality of the potable water that creates an actual hazard to the public health through poisoning or through the spread of disease by sewage, industrial fluids, or waste
relief vent
a vent whose primary function is to provide circulation of air between drainage and vent systems
stack vent
the extension of a soil or waste stack above the highest horizontal drain connected to the stack
vent stack
a vertical pipe installed primarily for the purpose of providing circulation of air to and from any part of the drainage system
water main
a water supply pipe, or system of pipes, installed and maintained by a city, township, county, public utility company, or other public entity, on public property, in the street, or in an approved dedicated easement of public community use
branch interval
a vertical measurement of distance, 8 feet or more in developed length, between the connections of horizontal branches to a drainage stack
sewage
any liquid waste containing animal or vegetable matter in suspension or solution, including liquids containing chemicals in solution
slope
the fall of a line of pipe in reference to a horizontal plane. in drainage the slope is expressed as the fall in units vertical per units horizontal for a length of pipe
PSF
62.4 x depth
PSI
62.4 x depth / 144
PSI (2)
.43 x pressure head
Gallons
inches cubed ÷ 231
Gallons (2)
ft cubed x 7.48
friction loss
pressure head loss x .43