Design guidelines for septic tank

[EngRabih]

Please can any one help me in the design in the otraditional septic tank made of stone & gravel?

 

[bimr]

Rather than start a new thread on an old topic, please do a search for septic tanks on the eng tips site. There have been literally hundreds of posts regarding septic tanks.

 

[EngRabih]

well I'm asking on the old system, not the modern system made of concrete, the old system was made only with stone and gravel, if you can help me I'll be very thankful

 

[bimr]

The invention of the septic tank is credited to Frenchman John Louis Mouras, who, during the 1860s constructed a masonry tank into which was directed various household detritus from a small dwelling in Vesoul, France, subsequently overflowing to an ordinary cesspool.

http://www.bbc.co.uk/dna/h2g2/A873876

So the septic tank is about 150 years old. I am not aware of any of the designs that were used before that. Probably a privy or outhouse was used before that.

http://en.wikipedia.org/wiki/Outhouse

http://www.victoriaspast.com/ThePrivy/privy.htm

 

[EngRabih]

Thank you very much for your informations