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 Abandon the site and locate the structure elsewhere  Design deep foundations to carry the weight of the structure to competent stratum  Redesign the.

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Presentation on theme: " Abandon the site and locate the structure elsewhere  Design deep foundations to carry the weight of the structure to competent stratum  Redesign the."— Presentation transcript:

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2  Abandon the site and locate the structure elsewhere  Design deep foundations to carry the weight of the structure to competent stratum  Redesign the structure according to the ground conditions  Improve the properties of the ground prior to construction

3  Densification of the ground, E.g.: Compaction  Accelerate the consolidation, E.g.: Vertical drains  Usage of geo synthetics, E.g.: Geotextiles  Usage of admixtures, E.g.: Cement stabilization  Preloading  Mechanical Stabilization Ground improvement is the modification of the ground properties in order to achieve the required ground conditions for the particular use of the ground.

4 BAND DRAIN TECHNOLOGY

5  Used in loose, compressible and water saturated clay and silty clays.  Soils are characterized by very loose skeleton and a large pore sizes filled with water  Requires about ten or more years to consolidate on preload. PVD – Prefabricated Vertical Drain.

6  Consolidation takes place in only one direction  Vertical drainage path may be substantially longer  It may take 10+ years to consolidate  Pore water will flow laterally  Pore water pressure dissipates as the layer drains and water is conveyed through vertical drains  It takes only about 6months or so to consolidate

7  Core : It is called drained body corrugated, flexible and made of polypropylene, designed to provide high discharge capacity, high tensile and compressive strength.  Filter Jacket: Non – woven,thermically bonded polypropylene wrapped around the core. Acts as the filter to allow ground water to the core. Filter Core

8  Minimum disturbance to the soil layers during installation  High water discharge capacity  High tensile strength prevents the collapse of flow path.  Fast and easy installation  Deep installation up to 40m.

9  Hydraulic Stitcher  Mandrel  Base Hydraulic Machine

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12 After the installation of band drains, Casagrande peizometer and plate type settlement recorders where installed in order to check the settlements

13 THANK YOU! For more information, Please contact: C-PHI | Geotech Website:


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