This paper descriptionbes the proposals for a limit-state formulation of a new South African code for the design of steel buildings. During the development ot this approach a number of anomalies and potential sources of confusion became apparent in ensuring consistency with the British interpretation of limit-state principles, as embodied in the South African concrete code. A framework is provided for a critical evaluation of the inflexibility in the present practice, and an alternative formulation is identified. The recommended approach to load combinations and conditions of overturning and stress reversal in the proposed code is also discussed.
A brief history of the development of the rational method of flood estimation was given. The methods of discounting losses to yield effective rainfall were discussed. Linear hydrological methods were found to be based on the same reasoning.