The following principle is taken from Abeles (Ref. 2.32) and applicable not only to prestressing concrete but to any endeavor that the engineer called upon to undertake: Explain this principlein...

Extracted text: The following principle is taken from Abeles (Ref. 2.32) and applicable not only to prestressing concrete but to any endeavor that the engineer called upon to undertake: Explain this principlein relation to prestress concrete design. 1. You cannot have everything. (Each solution has advantages and disadvantages that have to be tallied and traded off against each other.)