[AZ-Observing] Re: telescope piers

> In my opinion one should fill the pipe with concrete.  This makes for a
> sturdier  base and should alleviate any vibrations since the pipe is also
> isolated from the pad.


My pier is simply a 3'x3'x2'deep concrete base with 4 rebar sticking up and
to which I poured
a concrete column (pier).  It was done in 2 seperate pours, and it's massive
enough that I have yet to notice ANY vibration.  Then again, I haven't
deliberately kung-fu kicked the thing yet.  I isolated all the concrete from
the floor, so walking around wouldn't cause problems.

With a 6" pipe, I'd at least fill it with sand, which will stop the pipe
from resonating, but have to agree that concrete would probably be better.
This is because the concrete would be rigid, and render the pipe inflexible,
where the sand would allow some flex.  Also,  I read somewhere that the more
mass you can attribute to the pier, the more stable it should be, another
plus for concrete.

Hope this helps,

Thad


--
See message header for info on list archives or unsubscribing, and please 
send personal replies to the author, not the list.

Other related posts: