Foundation and Structure
Foundation and Structures group deals with the determination of the properties of foundation and structural materials and analysis of structural response and safety to various loads using laboratory and field tests as well as mathematical modelling. There are three technical divisions under this discipline; viz. Geotechnical Engineering (GE), Structural Modelling and Analysis (SMA), and Concrete Technology (CT). The Concrete Technology Division has been recently made an independent division out of the original. Soil and Concrete Division created in the year 1948. The Soil section has been merged with the Rock Mechanics division established in 1963 to form the GE division. The SMA division has been recently created by merging the activities of the Hydraulic Structure Research Centre (HSRC), Photoelasticity (PE), Model Engineering (ME) and Mathematics divisions.

Major activities undertaken by the various technical divisions in this group are summarized below:
  • Laboratory and field tests for estimating various Engineering Properties (Elastic and Strength) of soil, rock and other construction materials
  • Laboratory tests for finding tensile strength, resistance to puncture and permeability of geo-textiles and geo-membranes to assess their suitability for application in hydraulic structures
  • Stress analysis of underground openings by FEM method and Design of rock support systems and strengthening measures for rock mass
  • Evaluation of groutability and grouting procedure including assessment of the efficacy of grouting
  • Mathematical Modelling for dynamic response analysis of dams and evaluation of liquefaction potential of foundation strata
  • Physical Model studies for penstock manifolds and field studies for hydrostatic tests on penstocks and pipelines
  • Load tests on bridges, beams/columns of power houses, gates, etc.
  • In-situ measurement of stress/strain, uplift pressure, pore-pressure for monitoring long-term structural performance of gravity dams
  • Identification of suitable epoxy compounds (epoxy mortar & grout systems, and other materials) for rehabilitation of old/distressed hydraulic structures
  • Determination of thermal (adiabatic temperature rise, diffusivity, coefficient of thermal expansion) and creep properties of mass and roller compacted concrete
  • Thermal analysis of mass concrete and roller compacted concrete dams for estimating suitable placement temperature and construction schedule; pre and post cooling of mass concrete