search  homepage  organisation  know how  online forum  Links  registration  Password forgotten? partner login partner ID    password  about fmswiss.ch  FAQ & help tool  goals  conditions  email   lexicon/glossary     search :       2011 entries  A B C D E F G H I J K L M N O P Q R S T U V W X Y Z   Control Joints   Cracks intentionally formed in concrete at designated intervals to absorb the forces of expansion and contraction in an orderly pattern. Control joints allow a certain amount of tilting and heaving to prevent high stresses from developing and possibly breaking the concrete.