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GEO TECHNICAL TESTING SERVICES
 
 

 

GEOTECHNICAL INVESTIGATION TESTING METHODS
 
  • geotechnical investigation An important basis for the planning and construction of building and infrastructure projects (comprising various types of structures as foundation, excavation pit, land reclamation, beach nourishment etc.) is the knowledge of the ground conditions. For this purpose, the geotechnical investigation with its respective services shall be carried out. Their nature and extent depends on the type of the structure, the difficulty of the structure and the expected ground conditions.
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  • Geotechnical Data Collection
  • Geotechnical Investigation Programme
  • Geotechnical Field Investigation and Sampling
  • Geotechnical Laboratory Testing
  • Geotechnical Investigation Report
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    GEO TECHNICAL DATA COLLECTION
     
  • Geotechnical Topography maps
  • Geotechnical Geology maps and evaluation of regional geology conditions such as earthquake, faults, formation of soils
  • Geotechnical Climate and weather data
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    GEOTECHNICAL INVESTIGATION PROGRAMME
     
  • List of technical standards to be applied (geotechnical site investigation, drilling methods in soil / rock, sampling of soil / rock / groundwater, field testing, geotechnical laboratory testing of soil / rock / groundwater characteristics)
  • Number, mapping / location, depth of boreholes
  • Soil and rock drilling & sampling methods (Soil Investigations)
  • Number of standard penetration tests (SPT)
  • Number of field vane shear tests
  • Number of disturbed and undisturbed soil samples
  • Number of undisturbed rock samples
  • Ground water sampling
  • Geotechnical laboratory testing programme
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    GEOTECHNICAL FIELD INVESTIGATION AND SAMPLING
     
    Drilling Works Soil Sampling & Soil Investigations Rotary Core Drilling and Rock Sampling Standard Penetration Test (SPT) Field Vane Shear Test (VST) Cone Penetration Test (CPT)
     
    GEOTECHNICAL LABORATORY TESTING WITHIN GEOTECHNICAL INVESTIGATION
     
  • Moisture content - determination of the moisture content of a soil as a percentage of its oven-dried weight.
  • Unit weight - determining the total/moist and dry densities - unit weights - of soil specimens.
  • Specific gravity - determination of the specific gravity of soil solids passing the 4.75-mm sieve (No. 4) by means of a water pycnometer.
  • Attenberg limits - determination of the liquid limit, plastic limit, and the plasticity index of soils.
  • Particle size distribution - quantitative determination of the distribution of particle sizes in soils, distribution of particle sizes larger than 75 μm - retained on the No. 200 sieve - is determined by sieving, while the distribution of particle sizes smaller than 75 μm is determined by a sedimentation process, using a hydrometer.
  • Engineering properties tests (determining of strength and deformation parameters)
  • Rock Strength Properties Tests
  • Chemical Analysis of Groundwater
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    GEOTECHNICAL INVESTIGATION REPORT
     
  • Project description
  • Description of the works performed with respect to the geotechnical investigation programme
  • Technical standards
  • Site conditions
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    Geotechnical Field Investigation
     
  • Drilling of boreholes
  • Soil sampling
  • Rock coring and rock sampling
  • Standard penetration tests
  • Field vane shear tests
  • Cone penetration tests
  • Final quantity report on field investigation works
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  • Geotechnical Laboratory Testing
     
  • Index properties tests (moisture content tests, unit weight tests, specific gravity tests, atterberg limits tests, particle size distribution tests)
  • Engineering properties tests (unconfined compression strength tests, consolidation / oedometer tests, consolidated undrained triaxial compression tests)
  • Rock strength properties tests (point load tests, uniaxial compression strength tests)
  • Chemical analysis of ground water
  • Final quantity report on laboratory tests
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    Evaluation of Soil Conditions and Soil Parameters
     
  • Soil profile
  • Deformation properties of soft clay layers (pre-consolidation pressure and over consolidated ratio, compression, coefficient of primary consolidation index, cecondary consolidation)
  • Strength parameters (undrained shear strength, strength parameters from CIU tests, SPT-N values)
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    Groundwater
     
  • Ground water level measurement
  • Results on chemical ground water analysis and evaluation of level of aggressiveness to structures
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    Conclusions and Recommendation
     
  • Geotechnical soil conditions of the project site
  • Recommendation for building foundation methods, soil improvement methods … (acc. to the project scope)
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    LIST OF STANDARDS FOR GEOTECHNICAL INVESTIGATION SERVICES
     
  • IS:1892-1979, Code of Practice for subsurface investigation for foundation. (reaffirmed 2011)
  • IS:4453-2009, Subsurface Exploration by Pits, Trenches, Drifts and Shafts - Code of Practice (reaffirmed 2012)
  • IS:1888-1982, Method of Load Test on Soils. (reaffirmed 2011)
  • IS:2131-1981, Method for Standard Penetration Test for Soils. (reaffirmed 2011)
  • IS:3132-1986, Code of practice for thin-walled tube sampling of soils (reaffirmed 2011)
  • IS:10108-1982, Code of practice for sampling of soils by thin wall sampler with stationary piston (reaffirmed 2010)
  • IS:4434-1978, Code of practice for in-situ vane shear test for soils (reaffirmed 2011)
  • IS:4968 Part 1-1976, Method for subsurface sounding for soils: Dynamic method using 50 mm cone without bentonite slurry (reaffirmed 2011)
  • IS:4968 Part 2-1976, Method for subsurface sounding for soils: Dynamic method using cone and bentonite slurry (reaffirmed 2011)
  • IS:4968 Part 3-1976, Method for subsurface sounding for soils: Static Cone Penetration Test (reaffirmed 2011)
  • IS:5249-1992, Determination of dynamic properties of soil - Method of test (reaffirmed 2010)
  • IS:5529 Part 1-2013, In-situ permeability test Part 1 Test in overburden - Code of practice
  • IS:5529 Part 2-2006, In-situ Permeability Tests: Part 2 Tests in Bedrock (reaffirmed 2011)
  • IS: SP36 Part 1-1987, Compendium of India Standards on Soil Engineering Part 1 Laboratory Testing of Soils for Civil Engineering Purposes
  • IS: SP36 Part 2-1988, Compendium of India Standards on Soil Engineering Part 2 Field Testing of Soils for Civil Engineering Purposes
  • IS:1498-1970, Classification and identification of soils for general engineering purposes
  • IS:2809-1972, Glossary of terms and symbols relating to soil engineering
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    Geotechnical Planning & Geotechnical Investigation Programme
     
  • Code of Practice for Site Investigation | BS 5930:1999 |
  • Vietnamese Code of Practice for Exploratory Drilling in Engineering Geology | 22TCN 259-2000 |
  • Vietnamese Standard of Geotechnical Investigation for Marine Structure | 22TCN 260-2000 |
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    Geotechnical Field Investigation Works
     
  • Standard Guide for Use of Direct Rotary Drilling with Water-Based Drilling Fluid for Geoenvironmental Exploration and the Installation of Subsurface Water-Quality Monitoring Devices | ASTM D5783 |
  • Thin-Walled Tube Sampling of Soils for Geotechnical Purposes | ASTM D1587 |
  • Standard Practice for Rock Core Drilling and Sampling of Rock for Site Investigation | ASTM D2113-99 |
  • Test Method for Penetration Test and Split-Barrel Sampling of Soils | ASTM D1586 | Standard Penetration Test
  • Standard Test Method for Electronic Friction Cone and Piezocone Penetration Testing of Soil | ASTM D5778 | Cone Penetration Test
  • Standard Test Method for Field Vane Shear Test in Saturated Fine-Grained Soils | ASTM D2573 | Field Vane Shear Test
  • Standard Practice for Description and Identification of Soils | ASTM D2488 |
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    Geotechnical Laboratory Testing
     
  • Standard Practice for Classification of Soils for Engineering Purpose | ASTM D2487 |
  • Standard Practice for Dry Preparation of Soil Samples for Particle-Size Analysis and Determination of Soil Constants | ASTM D421 |
  • Standard Practice for Particle-Size Analysis of Soils | ASTM D422 | Sieve / Hydrometer Analysis
  • Standard Test Method for Liquid Limit, Plastic Limit, and Plasticity Index of Soils | ASTM D4318 | Attenberg Limits
  • Standard Test Method for Specific Gravity of Soil Solids by Water Pycnometer | ASTM D854 | Specific Gravity
  • Standard Test Methods for Laboratory Determination of Density (Unit Weight) of Soil Specimens | ASTM D7263 | Bulk Density
  • Standard Test Method for Laboratory Determination of Water Content of Soil and Rock by Mass | ASTM D2216 | Natural Moisture Content
  • Standard Test Methods for One-Dimensional Consolidation Properties of Soils Using Incremental Loading | ASTM D2435 | Oedometer Test
  • Standard Test Method for Unconfined Compressive Strength of Cohesive Soils | ASTM D2166 |
  • Standard Test Method for Consolidated Undrained Triaxial Compression Test for Cohesive Soils | ASTM D4767 |
  • Standard Test Method for Determination of the Point Load Strength Index of Rock and Application to Rock Strength Classifications | ASTM D5731 |
  • Standard Test Method for Unconfined Compressive Strength of Intack Rock Core Specimens | ASTM D2938 |
  • Standard Test Method for Underground Water Chemical Test – pH Value | ASTM D4972 |
  • Standard Test Method for Underground Water Chemical Test – Chloride Content | ASTM D512 |
  • Standard Test Method for Underground Water Chemical Test – Sulphate Content | ASTM D516 |
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    GEO TECHNICAL LIST TESTING SERVICES
     
  • Dynamic Core Drilling Testing
  • Standard Pentration Testing
  • SPT Testing Services
  • Plate Load Testing
  • Soil Electric Resistivity Testing
  • Field density Testing
  • Field Permeability Testing
  • Field CBR Testing
  • Lateral Load Testing
  • Pile Load Testing
  • Bentonite Powder Testing
  • Compaction Testing
  • Electrical Resistivity Test (In-situ)
  • Geotechnical Investigation
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    GEOTECHNICAL INVESTIGATION SERVICES
     
    GEOLOGICAL ANALYSIS

    Geophysical Analysis laboratories to do all your Geology Analysis, surveys, exploration, characterization, experimentation, projects, testing, research, developments, investigations, certifications or studies, such as: