ABSTRACT
This chapter consists of a brief account of the geotechnical investigation of soils and rocks found in the national capital region of Delhi. It accounts for some of the engineering implications, namely the localised availability and variabilities of various geomaterials, dilatancy of silty sand and rock masses, microzonation of adjoining areas and the uses of soils, rocks, coal ash and construction and demolition wastes as construction materials. The natural hazard potential of Delhi has been compiled to project the probability of liquefaction with reference to the geotechnical investigation and microzonation. The potential waste problems, namely municipal solid waste, the performance of construction and demolition waste as a highway material and the performance of coal ash as a structural fill material, have been discussed. A couple of engineering problems on a deep excavation and a structure on a filled-up soil have been shown along with their engineering solutions.
