I have always heard that 0.6mm or 0.025 in., or whether you can stick a credit card in it is a useful measure. Of course that is too simple for a committeeman at ACI to consider.
Richard Hess
-----Original Message-----
From: bill@polhemus.cc [mailto:bill@polhemus.cc]
Sent: Friday, May 16, 2008 11:42 AM
To: seaint@seaint.org
Subject: [CONCRETE] When Is Concrete "Cracked"?I know that reinforced concrete "always cracks," but what is the criterion for determining when it is "too cracked;" that is, that the cracks are significant enough to need attention?
Seriously, I've had a tough time finding a defnition of this in ACI documents, etc.