Quote:
Originally Posted by Garyh
Why not use a zinculume tank? they are cheaper and empty they would have much stronger walls..
We have both at home and the metal tanks are much stronger as the curved corrigated iron makes for a strong wall..Add a 100mm concrete floor cut a door hole and cut of the sheet metal top and you are on your way..you can use this spare sheet metal as part of your dome or roof..
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I originaly thought of a plastic tank "lid" to go on the rock observatory I have been building... for about 3 years now!!!!... it started as a pile of rock gathered from around the new cleared yard I had put in after the fires cleaned me out ...
With fire a worry I thought about the bottom of a steel tank. Once you think about it ..it becomes clear you dont need a dome.
I have not talked to the guy about it for a while but he is going to make a steel tank for me with only a few rungs (about of foot) ... that will sit on top of the 6 foot walls. It will need some internal support but he said maybe $500.
I have been hoping an old tank "appears" as things do as the botom of an old tank is more often intact.
However the roll off shed works very well so I am not in a rush with the stone observatory ... It is to house the yet to be built English Equatorial mount holding the 16 inch??? well at least the 12 inch.
But I would suggest any one thinking on these problems to consider a roll off shed.. it is cheap easy and efficient. The only sckill required is patience.
alex