[TowerTalk] concrete forms

[Cqtestk4xs at aol.com]

28 days allows concrete to cure to around 90% of its strength.
 
If allowed to dry to quickly, the surface becomes "crazed" and can develop  
lots of small surface cracks.  This is not usually a problem with  tower 
installations since there is very little surface area with respect to the  amount of 
concrete in hole.
 
I have poured quite a few bases in the hot Florida sun and have never had  
one develop any cracks, even though I took no special measures to keep in  wet.  
My belief it is a non-issue.
 
I would however wait several weeks before erecting any tower after pouring  
the base.  Your choice.
 
Bill K4XS