ABSTRACT
It used to be assumed that the only items affecting the costs of a construction project were size and quality. In the present age we are more aware that the construction costs of a particular design solution are influenced by many other factors, some of which are interrelated. Insufficient research has been undertaken to enable us to be more precise about the morphology of building and engineering structures. There is, however, some knowledge available to us that has arisen largely because of expediency in practice, which does provide us with some rule-of-thumb guidelines. It may take many years before we are able to base our judgements on a more reliable body of knowledge.
