[TowerTalk] RE: TowerTalk Digest, Vol 23, Issue 52

[Mike Maddox]

Hello All,

I have a question regarding tower base concrete.

How long should concrete cure after pouring to
be safe to install a crank-up, tilt over tower???
The mix is 3500 psi.

Many Thanks in advance.  73,  Ted  K2QMF


Without additives, 28 days til 50% strength.  Years until anything
approaching 90%.  You should consider at least 7 days before putting mush
stress on it, it's still green for several days.  Cold temps will delay it
even more.  Even if it's stressed before it should be, and doesn't crack,
does not means it hasn't been damaged and will later fail.  How long do you
expect this install to last?