/
0100mm VENTILATING STACKS TO TERMINATE IN
BUILDING OPENING
OPEN AIR (REFER TO CLAUSE 4.3.6) WITH THE
FOLLOWING MINIMUM HEIGHT:
GUARD
MIN 3000mm AWAY FROM ANY HIGHEST SLOPING ROOF
( I ) 150mm ABOVE
WINDOW OR BUILDING OPENING
( II ) 150mm ABOVE THE PARAPET WALL OF
FLAT ROOF
( III) 2500mm ABOVE ROOF AREAS DESIGNATED
FOR COMMON USE
ROOF
CONNECTION OF VENTILATING
STACK TO DISCHARGE STACK
AT A POINT NOT LESS THAN 150mm
ABOVE THE SPILL OVER LEVEL OF THE
TOP MOST SOIL SANITARY APPLIANCE
OR FLOOR TRAP WHICHEVER IS HIGHER
wb wb
wc(p) wc(p)
lb lb FOURTH
ft ft STOREY
/
050mm VENTILATING PIPE TO
CONNECT TO VENTILATING STACK
AT AN ANGLE OF 45°ABOVE SPILL
OVER LEVEL OF SOIL SANITARY
APPLIANCE OR FLOOR TRAP
WHICHEVER IS HIGHER MIN /
050mm VENTILATING STACK
wb
wc(p)
lb THIRD
ft STOREY
MIN /
0100mm DISCHARGE STACK
wb u
wc(p) SECOND
fw ft ut STOREY
MIN /
0100mm DISCHARGE PIPE NO DISCHARGE PIPE CONNECTION
AT SHADED AREA ALL THE WAY
TO IC
wc(p)
FIRST
ft STOREY /GROUND FLOOR
TO INSPECTION CHAMBER
LEGEND :
(SEE DRAWING NO. 3-2b FOR DISCHARGE
wc (p) WATER CLOSET-PEDESTAL PIPE AT GROUND FLOOR TO IC)
lb LONG BATH (SEE DRAWING NO. 3-22b FOR DISCHARGE
NOTE:
STACK TO IC)
wb WASH BASIN
1. SEPARATE DISCHARGE STACK FOR KITCHEN AND TOILET IS NOT REQUIRED
ft FLOOR TRAP
FOR LANDED HOUSES ( i.e. DETACHED, SEMI-DETACHED AND TERRACED
fw FLOOR WASTE
HOUSE )
u URINAL
2. CROSS-VENT PIPE AT MID-HEIGHT OF THE BUILDING IS NOT REQUIRED.
ut URINAL TRAP
ALL DIMENSIONS ARE IN mm.
SCALES
ISSUED: DEC 2021 FULLY VENTILATED SYSTEM
NOT (
WITHOUT SECONDARY DISCHARGE STACK)
TO WATER RECLAMATION (NETWORK) DEPARTMENT
LAST REVIEWED: N OV 2021
SCALE
FOR LANDED HOUSING
DRAWING NO. 3-15c
