VENTILATION PIPE
SOAKAWAY
CESS PIT
TANK
150mm PERFORATED PVC PIPE
150mm STANDARD JOINT
H.C.F.
300
300
300
TYPICAL MANHOLE
800
BENCHING
WC
300
FLUSH CISTERN
300
SLUDGE LEVEL
TO SOCKAWAY
300
FROM CESS PIT
1100
SECTION Z-Z
6000
300
5050
SOIL PIPE TRENCH
5235
5900
WIRE BALCON
150mm CONCRETE BAFFLE
WALL
5700
150mm STANDARD JOINT
300
300
SURFACE DRAIN
100mm VENT PIPE
DRAIN COVER
R250
1:200
SOIL AND VENT
PIPES REQUIRED TO
BE CARRIED UP TO
AT LEAST 600mm
ABOVE ROOF
PIECES OF ROCKS
1:200
B
WC
C
NOTE FOR SEPTIC TANK
AIR SHOULD BE EXCLUDED FROM THE SEPTIC TANK TO
ENCOURAGE THE GROWTH OF AMOEBIC BACTERIA TO
LIQUEFY THE SLUDGE AND TO FACILITATE THE FLOW OF THE
EFFLUENT ACCUMULATED. GASES ARE EXPECTED TO BE
CONNECTED AND EXPELLED THROUGH THE FOUL AIR OUTLET
WHICH SHOULD BE CARRIED AT LEAST 600mm ABOVE EAVES
AND ITS END PROTECTED AGAINST NESTING OF BIRDS AS
SHOWN ON DRAWINGS.
DRAIN SHOULD BE GIVEN SUFFICIENT FALL. PIPE JOINTS
SHOULD BE PROPERLY MADE TO PREVENT BLOCKING OF THE
APPERTURE AND TO EXPEDITE THE ESCAPE OF
ACCUMMULATED GAS.
TOP OF SEPTIC TANK MUST BE AT 150mm ABOVE FINISHED
GROUND LEVEL.
E
4200
BAFFLE WALL
150mm PERFORATED PVC PIPE
4000
4000
R.C. SLAB
1650
1700
Z
1700
1300
TO SOCKAWAY
1100
100
1150
INSPECTION CHAMBER
B
300
C-C
8500
C
E
IMPORTANT
WHERE TWO OR MORE WATER CLOSETS ARE CONNECTED
TO THE SAME SOIL PIPE, THE TRAP OF EACH WATER CLOSET
OTHER THAN THE HIGHIEST SHALL BE VENTILATED BY AN
ANTI-SYPHON PIPE INTO THE OPEN AIR AT A POINT 900mm
ABOVE THE WATER SEAL IN THE HIGHEST WATER CLOSET.
THE ANTI-SYPHON AND CONNECTIONS SHALL BE OF 50mm
INTERNAL DIAMETER AND CONNECTED TO SOIL STACK AT A
POINT NOT LESS THAN 75mm AND NOT MORE THAN 300mm
FROM THE HIFHEST PART OF THE WATER SEAL WHICH IS
NEARER TO THE SOIL STACK. OVERALL DEPTH OF SEPTIC
TANK BELOW GROUND LEVEL IS DETERMINED BY THE DEPTH
OF THE INLET AND SHALL NOT BE LESS THAN 150mm.
BAFFLE SCREEN MUST BE PROVIDE TO PREVENT THE FLOW
SPLASHING VOILENTLY THUR ALLOWING EASY SUBMERSION
AND TO PREVENT DIRECT FLOW BETWEEN INLET AND
OUTLET.
SEPTIC TANK SHOULD BE OPENED EVERY 6 MONTHS AND
DEPTH OF TOP CRUST ACCELERATED. IF THIS EXCEEDS
300mm SURPLUS SHOULD BE REMOVED AND BURIED.
SOAKAWAY
300
SECTIONS
B-B
FROM CESS PIT
100
1400
PLAN
4200
1150
1700
SLUDGE LEVEL
SLUDGE LEVEL
150mm PERFORATED PVC PIPE
STD 150 JOINT
300
4750
300
6000
5400
BAFFLE WALL PERFORATION
3400
4600
300
300
300
3400
4600
300
SEPTIC TANK DETAILS
300
300
P.O. BOX 8303 ACCRA-NORTH
TEL: 0262238617
Email: sowetford2003@yahoo.com
MR AUGUSTINE DADZIE
PROPOSED ONE STOREY SIX ONE BEDROOM APARTMENT
AT KOMENDA
SEPTIC TANK DETAILS
Project number
Date
Drawn by
Checked by
AD201220
16d
22 December, 2020
FREDERICK KOFIE
Scale
1 : 100