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153 posts

Master Geek
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Topic # 189446 30-Dec-2015 11:12
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Hello everyone,

I'm going to build retaining wall DIY from concrete block with reinforcement and  I would like to get professional consultancy on how to build it properly. Various manuals and instructions recommend to "consult engineer" first and generally I agree with that as retaining walls are structural thing and my wall will reach 1.5m in highest point. However, I cannot really understand where to find them. Googling returns only companies that build these walls. Are they ok to ask for professional  (paid) consultancy? They offer free quote but I don't need quote. Can their opinion be biased to force me to use builders where it is not necessary? Is it possible to find just practising independent engineers?

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198 posts

Master Geek
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  Reply # 1459077 30-Dec-2015 15:46
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You're looking for a engineering consultancy - where in the country are you?

657 posts

Ultimate Geek
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  Reply # 1459078 30-Dec-2015 15:57
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If you are in Auckland we used Chambers Consultants friend of a friend type thing.

Well priced, effective, old school paper and pencil kind of guy that has been doing it for years.  Took about 2 months to invoice us as well.  

He doesn't have a web address but here are his contact details  


153 posts

Master Geek
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  Reply # 1459081 30-Dec-2015 16:01
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Thanks for reply's. I live in Lower Hutt (Wellington), so Auckland will not work for me. So, do I just need structural engineer?

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Uber Geek
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  Reply # 1459111 30-Dec-2015 16:24
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1.5m retaining wall does not sound very high. What is the law?

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Uber Geek
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  Reply # 1459112 30-Dec-2015 16:24
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Just google "civil engineers wellington" that should give you at least a few companies to try.

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Uber Geek
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  Reply # 1459157 30-Dec-2015 17:13
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some good info there in about what standards need to be met

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Uber Geek
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  Reply # 1459326 30-Dec-2015 23:01
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1.2m height is the limit before you need an engineered solution from memory. I know Roy Taylor does this type of work. Or he will put you on to someone who does.

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Master Geek
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  Reply # 1459552 31-Dec-2015 15:19
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Ok, thanks guys
Now I know at least who I need to search for :)
I tried to call some of them but seems they all on holidays. Anyway, it's not urgent so will continue next week.


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Ultimate Geek
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  Reply # 1459559 31-Dec-2015 15:43
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Can suggest Don Tompson Consulting Engineers based in Northland as an alternate.

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Uber Geek
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  Reply # 1459565 31-Dec-2015 16:05
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I've used ABuild Consulting in the past; you can also try SylvesterClark, but both are in the territory of proper retaining walls that hold back wellington hills and houses :-)


543 posts

Ultimate Geek
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  Reply # 1459584 31-Dec-2015 17:10
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i work for one of the mid-larger engineering consulting firms in nz......but for this sort of job a smaller outfit will be able to do the job and at a more competitive price:

if you don't get any recommendations - google some of these - civil / structural / geo - is what you will need:

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