Probabilistic Analysis of Deep Excavation Design and Construction Practices in Pakistan

Probability analysis provides a sound basis for choosing a course of action against the uncertainties involved in the geotechnical exploration. The modern probabilistic techniques have been successfully applied to classical geotechnical engineering problems such as seepage, settlement, bearing capacity, slope stability in the past throughout the world. This research is more specific towards the application of probabilistic analysis concept in the design and construction of deep excavation, which have emerged as a new trend used in the construction of high-rise buildings in the urban areas of Pakistan specifically. In this research paper, the design and construction data of deep excavation from running construction projects was collected and probabilistic method of analysis was applied for the evaluation of risks, uncertainties, probabilities and cost impacts. From the finding of the results, It is observed that if excessive unplanned risks are taken in design of deep excavations than its cost impact during construction become very high. However if controlled risks are taken in deep excavation construction than that can help in the cost reduction of the project.

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