Plumbing Basic Principles

Question 1

“Plumbing Law of the Philippines” approved on

Answer 1

18 June 1955

Question 2

“Plumbing Law of the Philippines” amended on

Answer 2

28 November 1959.

Question 3

the basic goal of the 1999 National Plumbing Code of the Philippines

Answer 3

is to ensure the unqualified observance of the latest provisions of the plumbing and environmental laws.

Question 4

principle no 1
water?

Answer 4

All premises intended for human habitation, occupancy or use shall
be provided with a supply of pure and wholesome water, neither connected with unsafe water supplies nor subject to hazards of backflow or back-siphonage.

Question 5

principle no 2
volume and pressure

Answer 5

Plumbing fixtures, devices and appurtenances shall be supplied
with water in sufficient volume and at pressure adequate to enable them to function satisfactorily and without undue noise under all nonnal conditions of use.

Question 6

principle no 3
effeciency

Answer 6

Plumbing shall be designed and adjusted to use the minimum quantity of water consistent with proper perfonnance and cleaning.

Question 7

principle no 4
explosion

Answer 7

devices for heating and storing water shall be so designed and installed as to prevent dangers from explosion through overheating.

Question 8

principle no 5
sewer

Answer 8

Every building having plumbing fixtures installed and intended for human habitation, occupancy or use on premises abutting on a street, alley or easement where there is a public sewer, shall be connected to the sewer system.

Question 9

principle no 6
plumbing unit

Answer 9

Each family dwelling unit on premises abutting on a sewer or with a private sewage-disposal system shall have at least one water closet and one kitchen type sink . Further, a lavatory and bathtub or shower shall be installed to meet the basic requirements of sanitation and personal hygiene .

Question 10

priniple no 7
ventilation

Answer 10

Plumbing fixtures shall be made of smooth non·absorbent material, free from concealed fouling surfaces and shall be located in ventilated enclosures.

Question 11

principle no 8
cleanouts

Answer 11

The drainage system shall be designed, constructed and maintained to safeguard against fouling, deposit of solids, clogging and with adequate cleanouts so arranged that the pipes may be readily cleaned.

Question 12

principle no 9
nampap

Answer 12

All pipings of plumbing systems shall be of durable NAMPAPAPPROVED materials, free form defective workmanship, designed and constructed by Registered Master Plumbers to ensure satisfactory service.

Question 13

principle no 10
trap

Answer 13

Each fixture directly connected to the drainage system shall be equipped with a water-sealed trap.

Question 14

principle no 11
air circulation

Answer 14

the drainage piping system shall be designed to provide adequate circulation of air free from siphonage, aspiration or forcing of trap seals under ordinary use.

Question 15

principle no.12
vent terminals

Answer 15

Vent terminals shall extend to the outer air and installed to preempt clogging and the return of foul air to the building.

Question 16

principle no 13
test

Answer 16

Plumbing systems shall be subjected to such tests to effectively disclose all leaks and defects in the workmanship.

Question 17

principle no 14
sewage harm

Answer 17

No substance which will clog the pipes, produce explosive mixture destroy the pipes or their joints or interfere unduly with the sewage-disposal process shall be allowed to enter the building drainage system.

Question 18

principle no 15
contamination

Answer 18

Proper protection shall be provided to prevent contamination of food, water, sterile goods and similar materials by backflow of se\vage. When necessary, the fixture, device or appliance shall be connected indirectly with the building drainage system.

Question 19

principle no 16
WC LIGHT

Answer 19

No water closet shall be located in a room or compartment which is not properly lighted and ventilated.

Question 20

principle no 17
septic tank

Answer 20

If water closets or other plumbing fixtures are installed in buildings where there is no sewer within a reasonable distance, suitable provision shall be made for disposing of the building sewage by some accepted method of sewage treatment and disposal, such as a septic tank.

Question 21

principle no 18
sewage backflow

Answer 21

Where a plumbing drainage system may be subject to backflow of sewage , suitable provision shall be made to prevent its overflow in the building.

Question 22

principle no 19
RMP

Answer 22

Plumbing systems shall be maintained in serviceable condition by Registered Master Plumbers.

Question 23

principle no 20
ACCESSIBLE

Answer 23

All plumbing fixtures shall be installed properly spaced, to be
accessible for their intended use.

Question 24

principle no 21
Structural stability

Answer 24

Plumbing shall be installed by Registered Master Plumbers with due regard to the preservation of the strength of structural members and the prevention of damage to walls and other surfaces through fixture usage.

Question 25

principle no 22
sewage treatment

Answer 25

Sewage or other waste from a plumbing system which may be deleterious to surface or sub-sutface waters shall not be discharged into the ground or into any waterway, unless first rendered innocuous through subjection to some
acceptable form of treatment.