Section 54(3)(g) in Tamil Nadu Combined Development and Building Rules, 2019

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State of Tamilnadu - Subsection

Section 54(3)(g) in Tamil Nadu Combined Development and Building Rules, 2019

(g)When the disposal of septic tank effluent is to a seepage pit, the seepage pit may be of any suitable shape with the least cross-sectional dimension of 0.90m and not less than 1.00m in depth below the invert level of the inlet pipe. The pit may be lined with stone, brick or concrete blocks with dry open joints which should be backed with at least 7.5cm of clean coarse aggregate. The lining above the inlet level should be finished with mortar. In the case of pits of large dimensions, the top portion may be narrowed to reduce the size of the RCC cover slabs. Where no lining is used, especially near trees, the entire pit should be filled with loose stones. A masonry ring may be constructed at the top of the pit to prevent damage by flooding of the pit by surface runoff. The inlet pipe may be taken down a depth of 0.90m from the top as an anti-mosquito measure; and

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State of Tamilnadu - Subsection

Section 54(3)(g) in Tamil Nadu Combined Development and Building Rules, 2019