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Foundations Soil Exploration Field and laboratory investigation is required to know the physical property and arrangement of the underlying solid layers.

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FoundationsChapter 2Foundations2. 1 Soil ExplorationField and laboratory investigation is required to know the physical property and arrangement of the underlying solid layers.The main objective of soil exploration is to know the general picture of the geography of that area to get adequate information of type and nature of soil available at different depths for designing safe, sound and economical foundation for a structure. 2.1.1 Purposes of soil exploration are: To determine the value of soil bearing capacity To select economical type of foundations To fix the depth of proposed foundation To predict the probable settlement of foundation and to make the necessary allowance in the design. To know the underground water level if needed to decide upon the method to be adopted to solve the ground water problem To know suitability of soil and degree of compaction of soil. To forecast probable difficulties which may occur and to solve the problems in advance.2.1.2 Methods of soil (site) explorationSoil exploration is carried out by1.Inspection of siteFollowing information are gathered during inspection of site Hard, soft, water logged etc Classification of soil by visual examination such as gravel, sand, clay Behavior of ground during changes in ground water level, drainage conditions Contains sulphates or other chemicals Unstable sites slopes etc.2. Means of test pits at random locations on the site Holes dig for

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