Die Kriel-watersuiweringsaanleg, wat onlangs SAISI se Hoeveld Informele Taktoekenning vir Uitmuntendheid in Siviele Ingenieurswese ontvang het is on twerp om 'n toekomstige verandering in waterbron met minimum koste en ontwrigting te akkommodeer.
The paper descriptionbes the design and construction of the temporary suspension road bridge built at the site of the Kariba Dam to replace the one carried away by the flood in 1958. The methods of design and construction are discussed and details of tests on the 2-in. diameter cables are given. The scheme adopted for erecting the cables and bridge steelwork Is descriptionbed in detail.
The paper descriptionbed the 'make-up' of clays and base exchange phenomena. The chemical composition of typical limes and specifications for road limes were given. The reactions which take place in a soil by lime stabilization were discussed and practical considerations concerning construction particularly in the Transvaal were mentioned.
This paper is an original investigational sequel to the review of the literature published in the September 1951 issue of the Transactions. The Author's concept of Softening Point Number as a measure of asphaltic bitumen quality is the subject of a rigorous experimental study from a number of angles of durability. Softening Point Number is a rheological characterization index read directly from a chart and relating standard penetration at 77F with softening point.