[HenryNZ]

I have been using a wooden pier which I concreted in the ground for a while. It requires frequent realignment as it does shift after a while. For various reason I do not wish to have a concrete pier, so I am exploring the option of a concrete foundation and a metal pier bolted on top. I am aware of some commercial metal piers in U.K., US and may be in Aus, but they would be cost prohibitive to import. I wonder if there is any commercial option in NZ? I did draw up some design myself, and have received a few quotes for making one, but I am not sure if my design is any good to commit that kind of money for something that may not work.

Does anyone know of someone preferably in Auckland who has experience making metal telescope piers?

Also does anyone know how big a foundation is needed for the soil type in Auckland?

And where I can source all the necessary bits for the foundation (Presumably Bunnings for the concrete - but what about the rebars and the formers?)