Geo-Technical Investigation &
Laboratory Testing

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Geo-Technical Investigation

Geo-technical unit was created in the Company since its inception in 1992. The Company gradually developed resources to carry out land based geotechnical investigations in all types of soils and rocks. In the year 2005, the Company enhanced its capabilities by conducting geotechnical under flowing water conditions. This achievement was earned because of our own in-house research and development. Today we offer a comprehensive and versatile range of soil investigation techniques from simple test pits to more sophisticated drilling and in-situ testing methods.

Being one of the leading geotechnical firms in Pakistan, we understand the importance of Geotechnical Investigation has for an efficient design of foundation. DECON has its own fleet of drilling rigs/equipment and technical manpower along with its own approved geotechnical testing laboratory. We are fully capable of executing drilling and testing activity independently without reliance on any third-party vendors. This allows us to provide a more quality-oriented service.

We are experienced acting as prime geotechnical contractor. Our site managers, supervisors are thorough professionals well versed with soil and rock logging according to British and other relevant international standards. We own and operate extensive fleet of drilling and allied field-testing equipment. Our drilling manpower belongs to our permanent staff. Their exclusive use of our drilling equipment allows us to design the project not only based on actual testing parameters but based on Engineering judgement also.

The Company, by virtue of its extensive experienceand inhouse capabilities has completed geo-technical investigation of mega projects in which logistics is of paramount importance involving different terrains such as desert, hills, marshy land and plain areas all over Pakistan.

Field Tests.

  • Standard Penetration Test
  • SPT with Solid Cone Attachment
  • Undisturbed Sampling
  • Disturbed Sampling
  • Rock Core Sampling
  • Water Sampling
  • Field Density Testing
  • NMC with Speedy Moisture Test
  • Cone Penetration Test
  • Wane Shear Test
  • Piezometer Installation
  • Permeability Test
  • Infiltration Test
  • Lugeon Test (Water Pressure Test)
  • Minard Pressure Meter Test
  • Schmidt Hammer Test
  • Sonic Integrity Test

Soil & Rock Testing Laboratory:

DECON’s Geotechnical Laboratory enjoys recognition of private sector and government institutions such as NTDC, WAPDA, DISCOS, WASA, etc; and reputable consultants including NESPAK, BARQAAB, GOPA (Germany), ILF (Germany), SMEC (Australia), Design Institute (China), Saman (Korea) and many others. Laboratory tests performed by DECON strictly adhere to standards set by ASTM international and British Standards institution. To ensure maximum accuracy, our equipment (field and laboratory) is frequently checked and calibrated to maintain quality standards set by reputable international and local organizations.

Lab Tests (Soil)

  • Grain Size Analysis – ASTM D422
  • Hydrometer – ASTM D422
  • Double Hydrometer for Dispersive Soils – ASTM D422
  • Natural Moisture Content – ASTM D2216
  • Atterberg Limits – ASTM D4318
  • Shrinkage Limit – ASTM D4943
  • Specific Gravity – ASTM D854
  • Bulk & Dry Density – ASTM D5030, D2937, D1556
  • Moisture Density Relationship (Standard) – ASTM D698/AASHTO T 99
  • Moisture Density Relationship (Modified) – ASTM D1557/AASHTO T 180
  • Consolidation Test – ASTM D2435
  • Direct Shear Test – ASTM D3080
  • Unconfined Compression – ASTM D2166
  • Pin Hole Test – ASTM D4647
  • Crumb Test – ASTM D6572
  • Swell Pressure – ASTM D4546
  • Swell Potential – ASTM D4829
  • Permeability Test – ASTM D2434
  • Sulphate Content – SQ-118 Merck
  • Chloride Content – SQ-118 Merck
  • Organic Content – SQ-118 Merck
  • Chemical Analysis of Water – SQ-118 Merck
  • Standard Proctor – ASTM D698/AASHTO T 99
  • Modified Proctor – ASTM D1557/AASHTO T 180
  • CBR (3-Point Soaked) – ASTM D1883 / AASHTO T 193

Lab Tests (Rocks)

  • Point Load Index – ISRM
  • Uniaxial Compressive Strength – ISRM
  • Slake Durability – ASTM D4644
  • Modulus of Elasticity – ISRM
  • Petrographic Analysis – ASTM C-295-98

List of Key Projects (Geotechnical Investigations)

Project: DASU 5010042-001-EMB Sub-Soil Investigation of 765KV OHTL DASU – ISLAMABAD WEST

Scope:

  • Drilling of boreholes, 867 meters drilling
  • Standard Penetration Tests
  • Undisturbed / Disturbed sampling
  • Rock Coring
  • Laboratory Testing
  • Report Writing
  • Geological Mapping
  • Project Completion Time = 05 – Months

Project: Geotechnical Investigations For 150mw Sharmai Hydro Power Plant In Khyber Pakhtunkhwa Province

Scope:

  • Drilling of boreholes, 1072 meters drilling
  • Standard Penetration Tests
  • CPTU Test
  • Rock Coring
  • Undisturbed / Disturbed sampling
  • Excavation of Test Pits
  • Lugeon Test
  • Seismic Refraction Survey
  • Geodetic Survey
  • Laboratory Testing
  • Report Writing
  • Project Completion Time = 07 – Months

Project: Design Review/Vetting of Greater Karachi Bulk Water Supply Water Scheme K-IV, Pakistan

Scope:

  • Drilling of boreholes, 354 meters drilling
  • Standard Penetration Tests
  • Undisturbed / Disturbed sampling
  • Rock Coring
  • Borrow pit excavation
  • Laboratory Testing
  • Report Writing
  • Project Completion Time = 06 – Months

Project: Geotechnical Investigation of HVDC Converter Station Nowshera, KPK & Survey of Drainage Channel

Scope:

  • Drilling of boreholes, 275 meters drilling
  • Standard Penetration Tests
  • CPTU Test
  • Rock Coring
  • Undisturbed / Disturbed sampling
  • Excavation of Test Pits
  • Laboratory Testing
  • Report Writing
  • Project Completion Time = 03 – Months

Project: Geotechnical Investigation of HVDC Converter Station Nowshera, KPK & Survey of Drainage Channel

Scope:

  • Drilling of boreholes, 275 meters drilling
  • Standard Penetration Tests
  • CPTU Test
  • Rock Coring
  • Undisturbed / Disturbed sampling
  • Excavation of Test Pits
  • Laboratory Testing
  • Report Writing
  • Project Completion Time = 03 – Months

Project: NTDC CONTRACT TLC-03-2017 (LOT-II) Sub-Soil Investigation of 500KV OHTL GUDDU–MUZAFFARGARH

Scope:

  • Drilling of boreholes, 590 meters drilling
  • Standard Penetration Tests
  • Undisturbed / Disturbed sampling
  • Laboratory Testing
  • Report Writing
  • Project Completion Time = 02 – Months

Project: NTDC Tender No.: TLS-02-2017 For Sub-Soil Investigation of 500kV and 220kV D/C T/Lines under NTDC’s Own Resources

Scope:

  • Drilling of boreholes, 3840 meters drilling
  • Standard Penetration Tests
  • Undisturbed / Disturbed sampling
  • Laboratory Testing
  • Report Writing
  • Project Completion Time = 07 – Months

Project: Consultancy Services Relating to a Geotechnical Survey in Pakistan- 824 KM (Turkmenistan-Afghanistan-Pakistan-India (TAPI) Gas Pipeline Project)

Scope:

  • Drilling of boreholes, 240 No’s. 3105 meters drilling
  • Excavation of Trial Pits, 793 No’s
  • Electrical Resistivity Survey, 963 Locations
  • Pressure Meter Test, 32 No’s
  • Cone Penetration Test, 36 No’s
  • Standard Penetration Tests, 1844 No’s
  • Undisturbed / Disturbed sampling
  • Laboratory Testing
  • Report Writing
  • Project Completion Time = 04 – Months

Project: Geotechnical Investigation for Matiari – Lahore 660kV HVDC T/L Project in Pakistan

Scope:

  • Drilling of boreholes, 1659 meters drilling
  • Standard Penetration Tests
  • Undisturbed / Disturbed sampling
  • Laboratory Testing
  • Report Writing
  • Project Completion Time = 07 – Months

Subsoil Investigation for 500 kV Quad Bundle Double Circuit T/L Starting from Thar & Terminating at Matiari

Scope:

  • Drilling of boreholes, 1180 meters drilling
  • Standard Penetration Tests
  • Undisturbed / Disturbed sampling
  • Laboratory Testing
  • Report Writing
  • Project Completion Time = 05 – Months

Project: Subsoil Investigation for 220 kV T/L In-Out Ghazi Road Grid Station

Scope:

  • Drilling of boreholes, 545 meters drilling
  • Standard Penetration Tests
  • Undisturbed / Disturbed sampling
  • Laboratory Testing
  • Report Writing
  • Project Completion Time = 03 – Months

Project: Subsoil Investigation for 220 kV T/L In-Out Ghazi Road Grid Station

Year of Execution: 2015-16
Scope:

  • Drilling of boreholes, 545 meters drilling
  • Standard Penetration Tests
  • Undisturbed / Disturbed sampling
  • Laboratory Testing
  • Report Writing
  • Project Completion Time = 03 – Months

Project: Subsoil Investigation for 220 kV Uch Sibbi T/L

Scope:

  • Drilling of boreholes, 1150 meters drilling
  • Standard Penetration Tests
  • Undisturbed / Disturbed sampling
  • Laboratory Testing
  • Report Writing
  • Project Completion Time = 07 – Months

Project: Subsoil Investigation for 500kV Double Circuit Quad Bundle T/L from Neelum-Jhelum to Domeli

Scope:

  • Drilling of boreholes, 200 meters drilling
  • Excavation of Test Pits
  • Standard Penetration Tests
    • Undisturbed / Disturbed sampling
  • Laboratory Testing
  • Project Completion Time = 1.5 – Months

Project: Subsoil Investigation for 220kV T/L from New Kot Lakhpat-Ghazi Road at New Lahore 500/220kV Substation (Lot-2A)

Scope:

  • Drilling of boreholes, 860 meters drilling
  • Excavation of Test Pits
  • Standard Penetration Tests
  • Undisturbed / Disturbed sampling
  • Laboratory Testing
  • Project Completion Time = 01 – Month

Project: Geotechnical Investigation of 800 KM long Iran-Pakistan Gas Pipeline Project

Scope:

  • Drilling of boreholes, 3915 meters drilling at 200 locations, up to 60m max. depth.
  • Excavation of Test Pits, 1000 Nos.
  • Standard Penetration Tests
  • Undisturbed / Disturbed sampling
  • Field Permeability Tests
  • Seismic Refraction
  • Resistivity Survey
  • Laboratory Testing
  • Project Completion Time = 05 – Months

Project: Geotechnical, Geophysical & Geological Studies for 150MW Hydropower Project Located in Patrind Village of Muzaffarabad – AJK

Scope:

  • Drilling of boreholes, 600 meters drilling at 30 locations, upto 40m max. depth.
  • Standard Penetration Test
  • Undisturbed / Disturbed sampling
  • Laboratory Testing
  • Project Completion Time = 03 – Months

Project: Geotechnical, Geophysical & Geological Studies for 150MW Hydropower Project Located in Patrind Village of Muzaffarabad – AJK

Scope:
Drilling of boreholes, 1113 meters drilling at 20 locations, upto 150m max. depth.
Standard Penetration Tests
Undisturbed / Disturbed Soil and Rock Sampling
Water Pressure Packer Test in Rock
Field Permeability Test in Overburden
Elastometer Test (to compute Deformation & Elastic Modulus of in Situ Rock)
Seismic Refraction
Investigation of Construction Material
Geological Mapping
Project Completion Time = 04 – Months