Session D. Discussion

Reporter-General:

Fabricators can manufacture steel box girder bridges to

almost any refinement of specification that may be required.

However, too great a refinement may cause the cost to be

such that such bridges become uneconomic. The existence

of buckles and other imperfections in commercially welded

steelwork is inevitable. The extent to which they may be

permitted to exist is a choice which must be made between

an expensive and uneconomic ideal and what may be achiev

ed at reasonable cost. The fabricator must do his part by

ensuring that imperfections are reduced to an acceptable

level at reasonable cost and that doing this is routine.