Chapter 3 General Regulations

20mm/m or 2%

Horizontal drainage pipes shall be run in practical alignments and at a uniform slope between manholes of not less than

10 mm/m or 1%

Any such pipe or piping 102 mm or larger in diameter and constraints such as:
1. excessive depth of proposed drainage line
2. structural and geological features of terrain
3. existing adverse in arrangements of building

may have a slope of not less than ___

• 22.5°, 45°, or 60° bends

• Or other fittings with long sweeping curves for smooth flow

Changes in direction of drainage pipes must use approved fittings such as

Horizontal to Vertical Connections

this connection must use

• 45° or 60° wye branches

• Combination wye + 1/8 bends

• Sanitary tees

• long-sweep fittings

Horizontal to Horizontal Connections

this connection must use

• 45° wye branches

• combination wye + 1/8 bends

• long-sweep fittings

Vertical to Horizontal Connections

this connection must use:

• 45° branches

• long-sweep fittings

51 mm, 63 mm, 76 mm, 89 mm, 102 mm, 114 mm, 127 mm, and 152 mm
(or 2 in, 2.5 in, 3 in, 3.5 in, 4 in, 4.5 in, 5 in, 6 in)

Standard nominal pipe sizes

same

no fitting having more than one inlet at the ___ level shall be used unless such fitting is made so that the discharge from one inlet cant readily enter into the other inlet.

vertically

60° fittings are allowed only if installed _____

drainage system

All fixtures and appliances handling liquid waste or sewage must be properly connected to the building's _____

public or private sewer system

Every building with plumbing fixtures must be connected to a ________.

soil and waste pipe systems.

Roofs, inner courts, vent shafts, light wells or similar areas having rainwater drains shall discharge outside of the building or to the gutter, and shall not be connected to the __________

innocuous

Waste from plumbing systems must not be discharged onto the ground or into any water body unless it has been treated to become _______ to public health and the environment.

same lot

all plumbing and drainage systems—including excreta, storm, building drains, sewers, and private sewage systems—must be located on the _____ as the building or premises they serve.

interfere

Pipes, fixtures, or equipment must not be placed where they _____ with normal use, or block the proper operation of windows, doors, or other essential facilities.

unlawful

It is_____to conceal cracks, holes, or other material defects by welding, soldering, or using paint, wax, tar, or any sealing or repair agents

full bore

Burred ends of all pipes and tubings shall be reamed to the _____ of the pipe or tubing and all chips left inside the pipe or tubing shall be removed.

double hub

this fitting for lead-caulked joints in vertical position is prohibited

prohibited

single or double tee branches, single or double tapped tee branch, side inlet quarter bend, and running thread are ______ fittings for drainage lines

drilling and tapping

____ and ____ drainage or vent piping is prohibited

threaded

no cast iron soil pipe shall be

soil or waste pipe

no vent pipe shall be used as ___ or ___ pipe and vice versa

unvented

single drainage and venting systems with _____ branch lines are prohibited

metal pipe sleeves.

All pipings passing under or through walls shall be protected from breakage with embedded ______

polyethylene sheath

All pipes passing through or under cinders or other corrosive materials shaH be protected from external corrosion by encasing same with _______ or other

bitumen

Void between pipes and sleeves through concrete floors in the ground shall be appropriately sealed with _______.

metal sleeve

no pipe shall be directly embedded in concrete and masonry walls without ______

45 degrees

The bottom of all pipe trenches deeper than the footing of any adjacent building or structure and parallel to it must be at least

0.6, 0.3

No building sewer or other drainage pipings shall be installed under or within ___ meter of any building or structure, nor less than ___ meter below the finish ground surface.

0.6, 1/2, 2.4

tunnels for open cut trenches shall have a clear height of ___ meter above the pipe and shall be limited in length to ___ the depth of the trench, with a maximum length of ___ meters.

open trench

all excavations required to be made for the installation of a building drainage system or any part thereof, within the walls of a building, shall be _____ work and kept open until the piping has been inspected, tested and accepted.

0.3 m

Trenches shall be back-filled in thin layers of _____ above the top of the pipe with clean earth