SEPTIC TANK

2

MINIMUM COMPARTMENTS OF SEPTIC TANK (INLET AND OUTLET)

0.6-1.8 m

LIQUID DEPTH OF SEPTIC TANK

2/3

MINIMUM INLET OF FIRST COMPARTMENT

2 CU.M

MIN. CAPACITY OF 1ST COMPARTMENT

0.9 m

MIN. WIDTH OF 1ST COMPARTMENT

1.5 m

MIN. LENGTH OF 1ST COMPARTMENT

1/3

MAX. OUTLET 2ND COMPARTMENT

1 CU.M

MIN. CAPACITY OF 2ND COMPARTMENT

1.5 m

MIN. LENGTH OF THE SECONDARY COMPARTMENT IF THE SEPTIC TANK HAS OVER 6 CU.M CAPACITY

2

MIN. NUMBER OF MANHOLES IN SEPTIC TANK

508 mm

MIN. DIMENSION OF MANHOLE

1

__ MANHOLE IS OVER THE INLET AND MANHOLE OVER THE OUTLET

3.7 M

ADD 1 MORE MANHOLE ABOVE THE BAFFLE WALL IF THE FIRST COMPARTMENT EXCEEDS __ M IN LENGTH

50.8 MM

VERTICAL CLEARANCE OF INVERT OF THE INLET PIPE ABOVE THE INVERT OF THE OUTLET PIPE

50.88 MM

VERTICAL CLEARANCE OF THE COVER OF THE SEPTIC TANK ABOVE THE BACK VENT OPENINGS

101.6 MM

EXTENSION OF INLET AND OUTLET PIPE OR BAFFLE PARTITIONS BETWEEN COMPARTMENTS ABOVE THE WATER SURFACE

104.6 MM

MIN. VERTICAL LEG OF THE INLET AND OUTLET FITTING

104.6 MM

MIN. INVERTED FITTING INSTALLED IN THE INLET COMPARTMENT SIDE OF THE BAFFLE

106.6 MM

MIN. HORIZONTAL DIMENSION OF BAFFLE TYPE FITTING WHEN MEASURED AT THE INLET AND OUTLET PIPE INVERTS

228.6 MM

EXTENSION OF SIDEWALLS ABOVE THE LIQUID DEPTH

304.8 MM

EXTENSION OF INLET AND OUTLET PIPE OR BAFFLE BELOW THE WATER SURFACE

14.4 KPA

MIN. EARTH LOAD SUPPORT OF SEPTIC TANK COVER WHEN THE MAX. COVERAGE DOES NOT EXCEED 9 m

101.6 MM

MIN. BITUMINOUS COATING EXTENSION BELOW THE WATER LINE FOR CONCRETE SEPTIC TANKS AND SHALL COVER ALL OF THE INTERNAL AREAS ABOVE THAT POINT

GAUGE 12 US (2.8 MM)

MIN. WALL THICKNESS OF ANY STEEL SEPTIC TANK

BITUMINOUS COATING

STEEL SEPTIC TANK MUST BE PROTECTED EXTERNALLY AND INTERNALLY BY _____

PROHIBITED

WOODEN SEPTIC TANKS AND BAFFLES ARE _____

EFFLUENT DISPOSAL

ALL FLOW TEST SHALL BE PERFORMED THROUGH THE SYSTEM TO THE POINT OF ______