Is your concrete slab really going to vary from one foot to five feet THICK?
I must have read your post wrong. 8 x 13 x (1 to 5 feet) is around 10 cubic
yards of concrete -- that's a lot of concrete. What sort of forms are you
using?

Just curious.
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Joe S.

"Scott M. Petty" wrote in message
...
I'm planning to mount a telescope pier (Astro Pier) on a to be poured
concrete slab. The slab would be on a slope (although the slab obviously
would be level) and would vary between 1 and 5 feet in depth, being at
least
4 feet deep under the telescope pier. The overall size of slab would be
approximately 8 x 13 feet.

Would NOT isolating the telescope pier from the rest of the slab be a
problem? If my children or dogs walk on the slab am I going to get all
sorts of vibration in the mount or is the mass of the slab such that
vibration shouldn't be a problem?

Thanks in advance!!!

Scott