CHAPTER 3: General Regulations

Question 1

SECTION 1

1) Section number and Description
2) prohibited to do
3) except through

Answer 1

1) SECTION 301: DISPOSAL OF WASTE WATER
2) It shall be unlawful for any person to cause, suffer or pennit the disposal of
sewage, human excrement or other waste waters in any place or manner
3) except through and by means of an approved Excreta and Storm Drainage Systems installed and maintained in accordance with the provisions of this Code.

Question 2

SECTION 2

1) Section number and Description
2) SLope and exceptions
3) other slope

Answer 2

1) SECTION 302: GRADE OF HORIZONTAL DRAINAGE PIPING
2) Slope: 20mm per meter or 2% (less than 102 mm dia.)
Exceptions
a.excessive depth of the proposed drainage line
b.structural / geological features of terrain
c. existing adverse in arrangement of building or structures
3) Slope: 10 mm per meter or 1% (102 mm or larger dia)

Question 3

SECTION 3

1) Section number and Description
2) Changes in direction of drainage piping shall be made by
3) Horizontal drainage lines connecting to a vertical stack shall enter through
4) Note: No fitting having more than one inlet at the same level shall be used unless…
5) Vertical installation of double sanitary tees may be used when
6) Nominal pipe sizes recognized for these purposes are:
7) Horizontal drainage lines connecting to other horizontal drainage lines shall
enter through
8) Vertical drainage lines connecting to horizontal drainage line shall enter
through

Answer 3

1) SECTION 303: CJIANGF.S IN DIRECTION OF DRAINAGE FLOW
2) approved pipe fittings and shall be of the angles presented by a 22 1/2° bend, 45° bend, 60° bend or other approved fittings of longer sweeps.
3)** 45° or 60° wye branches**, combination wye and 1/8 bend branches, sanitary tee or other approved fittings of longer sweeps
4) such fitting is constructed so that the discharge trom one inlet cannot readily enter into the other inlet.
5) the barrel of the fitting is at least two (2) pipe sizes larger than the largest side inlet.
6) 51, 63, 76, 89, 102, 114, 127 & 152 mm. diameters.
7) 45° wye branches, combination wye and 1/8 bend branches or other approved fittings of longer sweeps.
8) 45-degree branches, or other approved fittings of longer sweep
Sixty (60) degree branches or offsets may be used only when installed in a
true verticai position

Question 4

SECTION 4

1) Section number and Description
2) All plumbing fixtures, drains, appurtenances and appliances used to receive
or discharge liquid wastes or sewage, shall be

Answer 4

1) SECTION 304: CONNECTIONS TO PIPING SYSTEMS REQUIRED
2) All plumbing fixtures, drains, appurtenances and appliances used to receive
or discharge liquid wastes or sewage, **shall be connected properly **to the
drainage systems of the building and premises,

Question 5

SECTION 5

1) Section number and Description
2) Every building where plumbing fixtures are installed shall have a sewer
service connection to a
3) When a Public or Private Sewer is not available for use,

Answer 5

1) SECTION 305: SEWER REQUIRED
2) public or private sewer systems except as provided in Subsection 305 .2 of this section.
3) excreta drainage piping from buildings and premises shall be connected to an approved Private Sewage Disposal System
Note: provision of septic tank, when public sewer is
not available ( 62 meters distance from the public sewer)

Question 6

SECTION 6

1) Section number and Description
2) It shall be unlawful for any persnn to deposit
3) Roofs, inner courts, vent shafts, light wells or similar areas having rainwater
drains shall discharge

Answer 6

1) SECTION 306: DAMAGE TO DRAINAGE SYSTEM OR PUBLIC SEWER
2) means into any plumbing fixture, floor drain, int erceptor, sump, receptacle or device, connected to the excreta and storm drainage systems, public sewer, private sewer, septic tank or cesspool, any ashes, cinders, solids, rags, fl ammable, poisonous or explosive liquids or gases; oils, greases or other things which would or could cause. damage to the drainage system or puhlic sewer.
3) outside of the building or to the gutter, and sha ll not
be connected to the soil and waste pipe systems.

Note
*Septic Tank for House (watertight)
*STP for Condominium

Question 7

SECTION 7

1) Section number and Description
2) Wastes detrimental to the public sewer system or to the functioning of the
sewage tr eatment plant shall be
3) Sewage or other waste from a plumbing system which may be deleterious to
surface or subsurface waters, shall not be

Answer 7

1) SECTION 307: INDUSTRIAL WASTE
2) treated and disposed of as found necessary and as directed by the Administrative Authority or other authorities having jurisdiction.
3) discharged into the ground or into any waterway unless first rendered innocuous through subjection to some acceptable form of treatment.

Question 8

SECTION 8

1) Section number and Description
2) no excreta plumbing system, storm drainage system, building drain, building sewer, private sewage disposal system or parts thereof, shall be located
3) No subdivision, sale, or transfer of ownership of existing property shall be
made

Answer 8

1) SECTION 308: LOCATION
2) in any lot other than the lot where the site of the building, structure or premises are served by such facilities.
3) in such a manner that the area, clearance, and access requirements of
this Code are decreased or impaired.

Question 9

SECTION 9

1) Section number and Description
2) Piping, fixtures or equipment shall not be so located to

Answer 9

1) SECTION 309: IMPROPER LOCATION
2) interfere with the normal function or usc thereof or with the normal operation and use of windows, doors or other required facilities.

Question 10

SECTION 10

1) Section number and Description
2) All designs, constructions and workrnanships shall be in conformity with
3) It shall be unlawful to conceal cracks, holes, or other imperfection in
materials by
4) Burred ends of all pipes and tubings shall be

Answer 10

1) SECTION 310: WORKMANSHIP
2) accepted engineering practices and shall be of such character as to secure
the results sought to be obtained by th is Code.
3) welding, brazing or soldering the defects or by using therein or
thereon any paint, wax, tar, or other sealing or repair agents.
4) reamed to the full bore of the pipe or tubing and all chips left inside the pipe or tubing shall be removed.

Question 11

SECTION 11

1) Section number and Description
2) Prohibited drainage fittings (Venting)
3) No drainage or vent piping shall be… no cast iron soil pipe….
4) No waste connection shall be made
5) no vent pipe shall be
6) single drainage and venting systems with
7) No fitting, fixture and piping connections, appliance, device or method of
instailation shall be used if
8) enlargement of closet bend or stub from
9) Gate and Check valves should have an
10) Valves, Pipes and Fittings shall be installed

Answer 11

1) SECTION 311: PROHIBITED FITTINGS and PRACTICES
2)
* Double Hub Fitting
* Single or Double Tee Branch
* Single or Double Tapped Tee Branc
* Side Inlet quarter bend
* Running thread
* Band or Saddle

3) drilled and tapped for making connections thereto, and no cast iron soil pipe shall be threaded.
4) to a closet bend or stub of a water closet or similar fixtures.
5) used as a soil or waste pipe, nor shall any soil or waste pipe be used as a vent.
6) unvented branch lines are prohibited (no vent)
7) which obstructs or retards the flow of water, sewage or air in the
excreta and storm drainage and venting systems in an amount greater than
the normal fri ctional resistance to flow.
8) 72 mm to 102 mm diameter shall not be considered Obstruction
9) Accessible connection
10) to the direction of flow

Question 12

SECTION 12

1) Section number and Description
2) The drainage system of each new building and of new work installed in any
existing building shall be

Answer 12

1) SECTION 312: INDEPENDENT SYSTEM
2) separate and independent from that of any other building and when available, every building shall have an independent connection with a private or public sewer.
Exception: Where one building stand in the rear of another building on an
interior lot, and no private sewer line is available nor can be constructed to the
rear building through an adjoining court, yard or driveway, the building drain
from lhe front building may be extended to the rear building if the existing size is adequate for both buildings and gravity flow is possible.

Question 13

SECTION 13

1) Section number and Description
2) In existing building or premises where plumbing installations are to be
a!tered, repaired or renovated, deviations from the provision of this Code are
permitted, provided such…
3) Existing building sewer and building drain may be used in connection with a
new building or new plumbing and drainage works only when they are
found on examination and tested to conform in all respects to the
requirements governing new work. and the proper Administrative Authority
shall notify
4) All openings into a Sanitary drainage and vent system, cx(cpt those
openings to which plumbing fixtures are pmperly conne~tcd or which
constitute vent terminals, shall be

Answer 13

1) SECTION 313: REPAIRS AND ALTERATION
2) deviations are necessary and first approved by the Administrative Authority.
3) notify the Owner to make changes necessary to confomt to this Code.
No building or part thercot: shall be erected or placed over any part of the
existing drainage system, which is constructed of materials other than those
approved elsewhere in this Code tor use under or within a building.
4) permanently plugged or capped in an approved manner. using the appropriate materials required by this Code.

Question 14

SECTION 14.1

1) Section number and Description
2) All pipings passing under or through walls shall be protected from breakage
with…
3) All pipes passing through or under cinders or other corrosive materials shaH be protected from external corrosion by…
4) …for expansions of hot water pipings.
5) Void between pipes and sleeves through concrete floors in the ground shall be appropriately

Answer 14

1) SECTION 314: PROTECTION of PIPING, MATERIALS and STRUCTURES
2) embedded metal pipe sleeves
3) encasing same with polyethylene sheath or in other approved manner.
4) Approved provisions shall be made
5) sealed with bitumen

Question 15

SECTION 14.2

1) All pipes in connection with the plumbing system shall be installed so that
the piping or connections will not be exposed to
2) No pipe shall be directly embedded in concrete and masonry walls without
3) No structural member shall be seriously weakened or impaired by

Answer 15

1) undue strains or stresses, and provisions shall be made for pipe expansions and contraction, and bending due to structural settlement.
2) metal sleeve
3) cutting, notching or otherwise.

Question 16

SECTION 14.3

1) The bottom of all pipe trenches deeper than the footing of any adjacent
building or structure and parallel to it
2) Building sewer installation should be between
3) Pipe surfaces subject to undue corrosion, erosion or mechanical damage
shall be… manners such as…

Answer 16

1) must be at least for1y-five ( 45) degrees therefrom. unless permission is granted by the Administrative Authority (Zone Influence of line 45 degrees)
2) 0.3 meters and 0.6 meters below the finish ground surface
3) with approved material… inside lining, outside coating and proper bottom bedding and top shielding with concrete blocks.

Question 17

SECTION 15.1

1) Section number and Description
Vertical Piping
2) vertical piping shall be secured at sufficiently close intervals to keep the pipes in alignment and to carry its weight and contents. Stacks shall be supported at their base as follows:
3) Cast Iron Soil Pipe
4) Screwed Pipe
5) Copper Tubing
6) Lead pipe
7) Plastic pipe

Answer 17

1) SECTION 315: HANGERS and SUPPORTS
2) Attachment
3) Bell & Spigot and Hubless pipe shall be supported at every storey or closer.
4) Iron Pipe Size (IPS) shall be supported at not less than every other storey height.
5) shall be up supported at each storey or at maximum intervals of 3 meters on center.
6) shall be supported at intervals not exc.eeding 1.20 meters at centers with a rigid vertical back-up
7) shall be supported at every one- (1) meter interval.

Question 18

SECTION 15.2

Horizontal Piping
1) Supports
2) Cast Iron Soil Pipe
* Where joints occur, suspended cast iron soil pipe shall be supported at not more than
* except that pipe exceeding I. S meters length, may be supported at not more
* supports shall be adequate to maintain alignment and to prevent sagging and shall be placed within
* Hubless or compression gasket joints must be supported at least at
* except that when the developed length between supports exceeds 1.2 meters
* Support shall also be provided at each
* Suspended lines shall be suitably braced to prevent

3) Screwed Pipe
4) Copper Tubing
5) Lead Pipe
6) In Ground
7) Plastic Tube

Answer 18

1) horizontal pipes shall be supported at sufliciently close intervals to keep them in alignment and prevent sagging.
2)
* 1. 5 meters intervals
* than 3 meters intervals
* 0.45 meters of the hub or joint.
* every other joint
* each joint
* horizontul branch connection placed on or immediately adjacent to the cooling
* horizontal movement

3) IPS except as provided in other Sections of this Code,
shall be supported at approximately 3.0 meters intervals for piping 19 mm diam.eter and smaller and 3.6 meters intervals for piping 25 mm and
larger in diameter.
4) shall be supported at approximately 1.8 meters
intervals for piping 38 mm diameter and smaller and 3.0 meters intervals
for pipings 51 mm and larger in diameter.
5) shall be supported by stiff metal or wooden backing for its
entire length with hangers properly spaced.
6) piping buried in the ground shall be laid on a flTYll bed for
its entire length, except where concrete cradle support is provided,
which is adequate and approved by the Administrative Authority.
7) shall be supported by stiff metal or wood backing with
hangers in its entire length for small-size tubings up to 38 mm diameter
and without backings but with spaced metal hangers at approved spacing
for larger-size tubings.

Question 19

SECTION 15.3

1) Materials
2) All pipings, fixtures and equipment shall be

Answer 19

1) for hangers and anchors shall be of sufficient strength
to maintain their proportional share with the weight of the pipe and
its content.
2) adequately anchored or supported to the satisfaction of the Administrative Authority.

Question 20

SECTION 16

1)

Answer 20

1) SECTION 316: TRENCHING, EXCAVATION and BACKFILL