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- Title
Geographic information system for the development of soil suitability map in south Chennai, India.
- Authors
Stalin, V.; Murugan, R.
- Abstract
The amount of subsurface information that can be effectively collected and manipulated is abundant. The use of information and database management system can help in the problem-solving process for the engineer. In this paper, south Chennai, India has been divided into four different zones. Subsequently, four zones between the village boundaries Kandanchavadi and Padur were selected to develop geotechnical zonation maps using geographical information system (GIS). Based on sampled geotechnical data values, an estimated value is assigned to all other locations using surface creation function (topo to raster interpolation process) in GIS. The study area was contoured for SPT N values and bearing capacity (kN/m) at 0.75, 1.5, 2.25, 3, and 3.75 m depth. Information from various interpolation techniques has been checked by cross validation, and it also based on the fact that objects that are near are more accurate than those that are far away. SPT N values and bearing capacities for various footing breadths at different depths could be computed using this GIS map with varying levels of confidence. Foundation suitability map is developed by using weighted overlay analysis. This study realizes the potential of GIS to find the solution of phenomena, that was very tedious by any other means, not only in terms of accuracy but also by the use of derived information as the input for other correlation analysis. Furthermore, the system can be used as a decision support for geotechnical engineers.
- Publication
Arabian Journal of Geosciences, 2015, Vol 8, Issue 3, p1415
- ISSN
1866-7511
- Publication type
Article
- DOI
10.1007/s12517-014-1323-0