[TowerTalk] tower base concrete strength?

[jp at ezoom.net]

Hi Pat,

You need to do what's called a slump test when the mix is delivered.  To be 100%
sure, you need to pour a cylinder of the mix you used and then have it tested
(crushed) after 30 days to determine the psi of the mix actually in the ground.

J.P.

Quoting Pat Masterson <bat at grumman.com>:

> If I order 3500 LB concrete from the supplier, how do I know that when
> the truckload arrives, it doesn't contain a weaker mix? What are the
> tests that can be performed before the stuff is poured into the hole?
> Should I hire  a professional inspecter to do the tests? -pat
> 
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