I.

History of Plumbing When was the National Plumbing

Practice Code of the Philippines
promulgated and approved. –
The birth of the plumbing
JANUARY 28, 1959
profession in the Philippines is
traced back to – 17th CENTURY First school for Plumbing
Engineering that was approved by
In 17th century, was established by
the Department of Education was
the Spaniards as a model
first introduced at? – FEATI
community. The WALLED CITY
UNIVERSITY
known as – INTRAMUROS
Otherwise known as the “Building
In 1902, the model community for
Code of the Philippines”? – R.A
PLUMBING TRADE was duly
6541
recognized by the government –
CITY OF MANILA When was the Revised Plumbing
Code (R.A. 1378 Plumbing Law)
The elite group to act as consultant
approved by Pres. Joseph Ejercito
of plumber journeyman on matters
Estrada? – DECEMBER 21, 1999
pertaining to plumbing installations
in villas and mansions. The II. 22 Basic Principles
recognized plumber then was (mnemonics)
called upon by – ILLUSTRADOS
1 – Clean water
A master plumber and became the
All premises intended for
first chief of the Division of
human habitation, occupancy or
Plumbing Construction and
use shall be provided with a supply
Inspection - JOHN F. HASS
of pure and wholesome water,
The meaning of NAMPAP – neither connected with unsafe
National Master Plumbers water supplies nor subject to
Association of The Philippines hazards of backflow or back-
siphonage.
When was the NAMPAP organized
and had it registered with the 2 – Volume and Pressure
securities and exchange
Plumbing fixtures, device and
commission? – 1935
appurtenances shall be supplied
Otherwise known as the with water in sufficient volume and
“PLUMBING LAW OF THE at pressure adequate to enable
PHILIPPINES” and was signed by them to function satisfactorily and
President Ramon Magsaysay. – R.A without undue noise under all
1378 normal conditions of use
When was the “PLUMBING LAW OF 3 – Efficiency
THE PHILIPPINES” became R.A. No.
1378? – JUNE 18, 1955
 Plumbing shall be designed The drainage system shall be
and adjusted to use the minimum designed, constructed and
quantity of water consistent with maintained to safeguard against
proper performance and cleaning. fouling, deposit of solids, clogging
and with adequate cleanouts so
4 – Explosion
arranged that the pipes may be
Devices for heating and readily cleaned.
storing water shall be so designed
9 – NAMPAP
and installed as to prevent dangers
form explosion through All piping’s of plumbing
overheating. systems shall be of durable
NAMPAP APPROVED materials, free
5 – Sewer
form defective workmanship,
Every building having designed and constructed by
plumbing fixtures installed and Registered Master Plumbers to
intended for human habitation, ensure satisfactory service.
occupancy or use on premises
10 – Trap
abutting on a street, alley or
easement where there is a public Each fixture directly
sewer, shall be connected to the connected to the drainage system
sewer system. shall be equipped with a water-
sealed trap.
6 – Plumbing Unit
11 – Air circulation
Each family dwelling unit on
premises abutting on a sewer or The drainage piping system
with a private sewage-disposal shall be designed to provide
system shall have at least one adequate circulation of air free
water closet and one kitchen type from siphonage, aspiration or
sink. Further, a lavatory and forcing of trap seals under ordinary
bathtub or shower shall be installed use.
to meet the basic requirements of
12 – Vent terminals
sanitation and personal hygiene.
Vent terminals shall extend to
7 – Ventilation
the outer air and installed to
Plumbing fixtures shall be preempt clogging and the return of
made of smooth non-absorbent foul air to the building.
material, free from concealed
13 – Sewage harm
fouling surfaces and shall be
located in ventilated enclosures. Plumbing systems shall be
subjected to such tests to
8 – Cleanouts
effectively disclose all leaks and
defects in the workmanship.
14 – Contamination 19 – RMP
No substance which will clog Plumbing systems shall be
the pipes, produce explosive maintained in serviceable condition
mixture~ destroy the pipes or their by Registered Master Plumbers.
joints or interfere unduly with the
20 – Accessible
sewage-disposal process shall be
allowed to enter the building All plumbing fixtures shall be
drainage system. installed properly spaced, to be
accessible for their intended use.
15 – Water Closet light
21 – Stability
Proper protection shall be
provided to prevent contamination Plumbing shall be installed by
of food, water, sterile goods and Registered Master Plumbers with
similar materials by backflow of due regard to the preservation of
sewage. When necessary, the the strength of structural members
fixture, device or appliance shall be and the prevention of damage to
connected indirectly with the walls and other surfaces through
building drainage system. fixture usage.
16 – Water Closet light 22 – Sewage Treatment
No water closet shall be Sewage or other waste from
located in a room or compartment a plumbing system which may be
which is not properly lighted and deleterious to surface or sub-
ventilated. surface waters shall not be
discharged into the ground or into
17 – Septic Tank
any waterway, unless first rendered
If water closets or other innocuous through subjection to
plumbing fixtures are installed in some acceptable form of
buildings where there is no sewer treatment.
within a reasonable distance,
suitable provision shall be made for
disposing of the building sewage by III. Master Plumber’s Code
some accepted method of sewage of Ethics
treatment and disposal, such as a
1 – Demand
septic tank.
Act in an unprofessional
18 – Sewage backflow
manner and demand any
Where a plumbing drainage remuneration other than his/her
system may be subject tb backflow original charges except for
of sewage, suitable provision shall additional services not covered in
be made to prevent its overflow in the basic contract;
the building.
2 – Supplant engage in any practice which tend
to bring dishonor to the dignity of
Supplant another Registered
the Registered Master Plumber, the
Master Plumber after definite steps
National Master Plumbers
have already been taken toward
Association of the Philippines
his/her being commissioned to
(NAMPAP) and the plumbing
perform the contract;
profession.
3 – Underbid
Underbid another Registered
IV. Chapter 1 -
Master Plumber by reducing his/her
ADMINISTRATION
professional fees after being
informed of the 'Ccs charged by the The plumbing permits is issued to
other Registered Master Plumber; whom? – Registered and
Licensed Master Plumber
4 – Take Advantage
All plumbing plans, drawings,
Take the advantage of a
diagrams, design computations as
salaried government position to
required shall be submitted in how
compete unfairly with a practicing
many sets of plans? – 6 SETS
Registered Master Plumber;
Expiration of plumbing permit of no
5 – Allow
work commenced within the date
Allow the use of his/her of such permit – 1 year
License as Registered Master
As required by Plumbing Code, all
Plumber for a fee to an unlicensed
plumbing systems shall be? –
Master Plumber in plumbing works
TESTED AND APPROVED
without his/her personal
supervision. The Building Official, the
Commission, the Board and such
6 – Injure Falsely
other department or agency
Injure falsely or maliciously, (DPWH, DILG or City Mayor) –
directly or indirectly, the reputation Administrative Authority
of another Registered Master
Administrative Authority will
Plumber by reviewing his/her work
endorse to authorities or agencies
for the same client unless the
the issuance of tapping and testing
professional services of the former
the equipment. – TEMPORARY
have been officially terminated and
CONNECTIONS
all professional fees have been
fully paid by the client; The seal shall be round in shape
and shall be inscribed with the
7 – Self – laudatory
following:
Advertise in self-laudatory
language, act in any manner and
 i. Registered and How many days will the plumbing
Licensed Master permit expires if is suspended and
Plumber at upper abandoned? – 120 days
portion of the round
Each building shall provide with the
seal.
sanitary facilities in accordance
ii. Name of Registered
with best practice for mobility as
and Licensed Master
provided in the National Building
Plumber at the upper
Code – Persons With Disability
center
(PWD)
iii. The registration
number shall appear at All Administrative Plumbing
the center below the Personnel, Plumbing Inspector shall
name be and in accordance with the
iv. Philippines, appearing provision of R.A 1378 – Registered
at the lower portion of and Licensed Master Plumber
the round seal
Shall not render an existing system
Before such inspection is intended unsafe, unsanitary or overloaded –
the Administrative Authority Additions, Alterations, or
requires that every request for Repairs
inspection be filled is at least how
Administrative Authority issues the
many days? - 3 DAYS
permit shall endorse in writing or
No portion of any plumbing system stamp the plans and specification
shall be concealed until - as – “APPROVED”
Inspected and Approved
Otherwise known as the
How much is the renewal of the “PLUMBING LAW” – R.A NO. 1378
plumbing permit? – ½ of the
V. CHAPTER 2 – Plumbing
original fee
Terms
All plumbing plans, computations,
 ADS (Acrylonitrile-
technical specifications, bills of
Butadiene-Styrene) - A
materials and other required
type of plastic material used
documents for all types of
for plumbing pipes.
occupancy shall be prepared, sign
and sealed by a Registered and  Alley - A public space or
Licensed Master Plumber – passageway less than 3
Without Limitations meters but at least 2 meters
in width.
How many sets of approved plans,
specifications and data shall be  Alter or Alteration - Any
returned to the applicant and the modification, addition, or
owner? – 2 SETS change in construction or
occupancy.
B  Effective Opening - The
minimum cross-sectional
 Backflow - The unwanted
area of a water supply
reverse flow of water or other
discharge point.
substances into the potable
water supply.  Existing Work - Any
plumbing system or
 Backflow Preventer - A
installation in place before
device that prevents
the current code's
contaminated water from
enforcement.
flowing back into the clean
water system. F
 Backwater Valve - A device  Faucet - A valve that
installed in drainage systems controls the flow of water.
to prevent reverse flow.
 Fixture Drain - The
C drainpipe connecting a
fixture trap to another
 Catch Basin - A receptacle
drainpipe.
designed to collect and retain
wastewater before disposal.  Flushometer Valve - A
device that releases a set
 Check Valve - A valve that
quantity of water for flushing
automatically closes to
purposes.
prevent backflow.
G
 Cross-Connection - Any
connection between potable  Gate Valve - A valve that
water and non-potable water controls water flow by lifting
that may cause or lowering a circular disk.
contamination.
 Gooseneck - A bent pipe
D commonly used as a faucet
or water connection.
 Drainage System - The
piping network that conveys H
sewage and wastewater to a
 Horizontal Pipe - A pipe
legal point of disposal.
installed at an angle of 45
 Durham System - A type of degrees or less with respect
plumbing system where to the horizontal plane.
pipes are made of rigid
 House Drain - The lowest
materials like threaded pipes.
horizontal pipe in a plumbing
E system that collects
wastewater from fixtures.
I  Sanitary Sewer - A sewer
system designed to carry
 Indirect Waste Pipe - A
only domestic wastewater.
pipe that conveys waste
without a direct connection to  Siphonage - A condition
the drainage system. where wastewater is pulled
back due to pressure
 Industrial Waste - Liquid or
differences.
waterborne waste from
industrial or commercial T
processes.
 Trap - A plumbing device
J designed to prevent sewer
gases from entering
 Jurisdiction - The
buildings.
administrative authority
responsible for enforcing  Trench Drain - A surface
plumbing codes. drain used to collect water
from floors or ground
L
surfaces.
 Lavatory - A sink or basin
V
used for washing hands and
face.  Vent Stack - A vertical pipe
that allows air to circulate
 Leaching Cesspool - A
within the plumbing system
cesspool that is not
to prevent siphonage.
watertight and allows liquid
to seep through the sides.  Vertical Pipe - Any pipe
installed in a vertical
M
position.
 Main Sewer - The primary
Q
underground pipe system for
wastewater disposal.  Quality of Materials –
Plumbing materials and
P
fixtures must be free from
 Potable Water - Water that defects.
meets safety standards for
R
drinking and household use.
 Receptor – A fixture or
 Plumbing System - Includes
device designed to receive
all water supply, drainage,
indirect waste pipes and
venting, and fixture
allow easy cleaning.
installations.
S
  Regulating Equipment –  Soil Pipe – A pipe that
Valves and controls used in carries waste from toilets and
plumbing systems. urinals.
 Relief Vent – A vertical vent  Stack – The main vertical
that helps air circulation in pipe in a drainage system.
drainage and vent systems.
T
 Repair – Restoration or
 Tailpiece – A pipe
renewal of an existing
connecting a fixture’s drain
plumbing system.
to a trap.
 Return Bend – A U-shaped
 Trap – A pipe feature that
pipe bend used in copper
prevents sewer gases from
tubing.
escaping while allowing
 Rim – The top open edge of a wastewater flow.
plumbing fixture.
 Trap Arm – The pipe section
 Riser – A vertical water between a fixture trap and its
supply pipe extending to a vent.
full story or more.
 Trap Seal – The depth of
 Roughing-in – Installation of water held in a trap to block
pipes and fittings before sewer gases.
fixtures are installed.
U
S
 Unit Vent – A single vent
 Sanitary Sewer – A sewer serving two traps.
system designed to transport
 Unconfined Space – A room
human waste and household
with sufficient volume for air
wastewater.
circulation and combustion.
 Seal – The water trapped in a
V
pipe to prevent sewer gases
from escaping.  Vacuum – Air pressure lower
than atmospheric pressure,
 Seepage Pit – An
often causing siphonage.
underground excavation used
for liquid waste absorption.  Vacuum Breaker – A device
that prevents backflow of
 Siphonage – The unwanted
contaminated water.
suction of water due to
pressure differences.  Vent Stack – A vertical pipe
that allows airflow in
drainage systems.
  Vent System – Pipes
designed to provide air
circulation and prevent trap
siphonage.
W
 Waste Pipe – A pipe that
carries liquid waste without
fecal matter.
 Water Main – The primary
pipe supplying water to a
community.
 Water Supply System –
The network of pipes and
valves that deliver potable
water.
 Wet Vent – A vent pipe that
also carries wastewater.
 Yard – An open, unoccupied
space that is unobstructed
from ground to sky.
 Yoke Vent – A pipe that
balances pressure between
soil stacks and vent stacks.