Abstract
T his paper discusses the technique of casting concrete of Micropiles with pressures and the consequence of compariso ns with normal way of casting concrete (casting with gravity). Preliminary geotechnical studies have been made in specific area in Sudan to predict the soil parameters, and then an experimental work has been done for an estimated number of Micropiles with different diameters and different techniques of placing concrete with various amount of pressure. This study was carried out to learn the usefulness of this technique in the field of structural foundations in Sudan. Capacities of Micropiles were compared in cases of non-pressure casting (normal way of casting concrete) and pressure casting. Through the results, it was found that the entry of pressure factor in the operation of casting concrete increases the capacities of Micropiles. The increased value of ultimate load depends on the amount of pressure applied.
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