The paper deals with social, administrative and financial difficulties of the organisation of new towns and with the responsibilities of development groups to the community till stability is attained and control safely transferred from the parent company to an elected local authority.
The effect of the Native Building Workers' Act of 1951 and the Native Services Levy Act of 1952 has been to accelerate the rate of building of Native houses, Johannesburg alone producing 10,000 to 15,000 units per annum. There has been a marked reduction in cost and a swing toward departmental work. Important consequences of the large urban concentration in the south-western areas of Johannesburg and of the side and service scheme tire discussed.
The theme of planning for the future is analysed in terms of known human needs and the new technology now becoming available to satisfy them. The various components of physical planning are discussed in turn and a summation made of the probable future patterns that will result.
The paper descriptionbes the design and construction of South Africa's third terminal elevator erected at East London to provide additional bulk handling facilities for the storage and export of maize. The capacity of the silo is 60,000 tons which is provided by 40 circular bins, 24 ft in diameter and 124 ft high arranged in four rows of ten, so that an additional 27 star bins are also available for storage.
Water hammer tests were conducted on a 13-mile long pipeline for the purpose of studying the pressure transients following the closure of a valve. Pressure recordings, observed at both ends and at the mid-part of the pipeline, are reproduced in this paper. The recordings are compared with computed values, and good correlation is found.
The paper descriptionbed tests carried out to determine the early strengths of concretes made with different types of cement, and to evaluate the effects of various percentages of Calcium chloride used as an admixture. Curves were presented to serve as a guide to the selection of cement:water ratio suitable for required strengths of concrete.
Last year The Civil Engineer in South Africa published a series of articles entitled ""Seven Wonders of Civil Engineering in South Africa"". This is now followed up with a paper on the most outstanding civil engineering work in the Republic in 1965 - as selected by the South African Institution of Civil Engineers.