I guess you can now buy septic tanks but when we had our house built they made one out of block. Septic systems here are some what different then the one we had in the US. Here they dug a hugh hole. Poured a cement floor then made a tank out of block and rebar. The tank measured about 8x10 and 10ft deep. Big sucker. One latteral line to another hugh pit filled with big rocks, covered with plastic then with dirt. That's it.
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I guess you can now buy septic tanks but when we had our house built they made one out of block. Septic systems here are some what different then the one we had in the US. Here they dug a hugh hole. Poured a cement floor then made a tank out of block and rebar. The tank measured about 8x10 and 10ft deep. Big sucker. One latteral line to another hugh pit filled with big rocks, covered with plastic then with dirt. That's it.
Thanks Robert