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.
Adobe walls are load bearing, i.e. they carry their own weight into the foundation rather than by another structure, hence the adobe must have sufficient compressive strength. In the United States, most building codes call for a minimum compressive strength of 300 lbf/in 2 (2.07 newton/mm 2) for the adobe block.