Apr 27, 2003 #1 rubenputter Mechanical Joined Apr 27, 2003 Messages 2 Location ZA How are concrete checked for cracks or cavities with respect to a 100mm thick floor.
Apr 30, 2003 #2 mark20 Mechanical Joined Nov 1, 2000 Messages 10 Location GB Can be ultrasound.. Upvote 0 Downvote