Post by Admin on Aug 2, 2018 18:50:06 GMT 12
Hi
In the old days, the design of domestic on-site wastewater systems (OSET) consisted of the drainlayer installed a septic tank and suitable length of field tiles based on there judgement with little specific design input. Then the RMA can in, with Regional Councils setting environmental standards that on-site wastewater treatment systems had to meet, but there was little in the way of national standards to cover their design or performance criteria.
We now have national standards AS/NZS 1546:2008 and 1547:2012 for treatment systems and land application systems and a national testing program for aerated wastewater treatment systems, plus numerous design manuals and guidelines produced by Territorial Authorities and Regional Councils....yet I seem to now have more questions than ever!
OSET designers come from a range of disciplines with varied practical and theoretical training and experience. Some come from a hands-on background (drainlayers), some from an engineering design background like myself, and other from the building and manufacturing industries.
We all have strengths and weaknesses and hopefully this forum will provide a forum where we can ask questions, share and expand our knowledge, and build up a technical resource for future reference.
Welcome to the forum
Grant M Hammond
Technologyworks Ltd
CPEng, BOPRC Approved OSET Designer
In the old days, the design of domestic on-site wastewater systems (OSET) consisted of the drainlayer installed a septic tank and suitable length of field tiles based on there judgement with little specific design input. Then the RMA can in, with Regional Councils setting environmental standards that on-site wastewater treatment systems had to meet, but there was little in the way of national standards to cover their design or performance criteria.
We now have national standards AS/NZS 1546:2008 and 1547:2012 for treatment systems and land application systems and a national testing program for aerated wastewater treatment systems, plus numerous design manuals and guidelines produced by Territorial Authorities and Regional Councils....yet I seem to now have more questions than ever!
OSET designers come from a range of disciplines with varied practical and theoretical training and experience. Some come from a hands-on background (drainlayers), some from an engineering design background like myself, and other from the building and manufacturing industries.
We all have strengths and weaknesses and hopefully this forum will provide a forum where we can ask questions, share and expand our knowledge, and build up a technical resource for future reference.
Welcome to the forum
Grant M Hammond
Technologyworks Ltd
CPEng, BOPRC Approved OSET Designer