General Introduction. The two functional groups I deal with here are the C,C double bond and the C,C triple bond. In each case the group is named by changing the letter a in the suffix ane to e for the double bond and to y for the triple bond.otes: 1  Examples 1 and 2 show the use of E/Z for routine alkene structures for which cis/trans could have been used. 2  Examples 5 and 6 show how the rules require you to move down the chain away from the stereocentre (the double bond) until a difference is found. 3  Example 6 illustrates that the functional group named as a prefix takes precedence in ...
compressive strength Definition. The resistance capacity of any material, but especially structural members, to crushing force. Compressive strength is usuallyexpressed as the maximum number of pounds per square inch that can be resisted without failure.
Definition. Strength of hardened concrete measured by the compression test. The compression strength of concrete is a measure of the concrete's ability to resist loads which tend to compress it. The compressive strength is measured by crushing cylindrical concrete specimens in compression testing machine. The compressive strength of concrete is calculated by the failure load