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1. Natural Hazard Mitigation

GSI in collaboration with Trumer Schutznbauten GmbH, Austria are implementing rockfall, slope and debris flow protection measures in Nepal since 2014. Geohazard related any problems have been dealt with expert opinion and solutions are provided according to the site characteristics.

a. Rockfall Protection Net:

Rockfall protection systems by Trumer Schutzbauten GmbH consist of an interception structure and a support or retaining structure. The interception structure is formed by the Omega-Net with its outstanding deformability, flexibility and energy absorption. The support or retaining structure consists of posts, bearing ropes, retaining ropes and brake elements.

b. Slope stabilization:

The slope retention systems by Trumer Schutzbauten consist of the net or wire netting component, which constrains the blocks of rock or unstable material, and the anchors that channel the forces into the ground. The coupling of the netting to the anchors is achieved through either spike or clamp plates. As an option, support ropes can be attached to the netting and anchors in various configurations, distributing forces both vertically and horizontally.

c. Avalanche Protection:

The avalanche protection systems by Trumer Schutzbauten GmbH utilize the flexible nature and high strength of the Omega-Net to prevent avalanches in their first stage of occurrence. Additionally, in scenically sensitive areas, the nets are practically transparent and so are an aesthetic alternative to traditional snow bridge or snow rack systems.

2. Geotechnical Services

Geotechnical services are primary service of GSI. We have extensive experience in almost every type of geotechnical consulting.

GSI works with developers, architects, civil design engineers, design-build contractors, school buildings, and municipality’s households to determine the geotechnical aspects or needs of a proposed project. We also have the expertise and experience to help determine the root causes of problems.

Engineers and geologists of GSI typically follow a project from inception to final construction. They ensure that quality data gathering techniques are implemented. Once proper sampling and testing is done, we use the field and laboratory data, along with geotechnical engineering theory, software, and engineering judgment to meet the needs of the projects or clients.

Here is a major list of geotechnical consulting services GSI provides to its clients:

  • Foundation soil stability analysis
  • Geological and geotechnical evaluations of sites and development
  • Retaining wall design
  • Soil stabilization, analysis and design
  • Shallow and Deep Foundation Design
  • Settlement analysis for both slopes and foundations
  • Pavement analysis and design
  • Embankment Design
  • Site dewatering design
  • Slope stability analysis
  • Soil evaluations for sewage management
  • Site seismic analysis
  • Subsurface evaluations
  • Geotechnical evaluation for dam design
  • Dam construction, inspection and testing
  • Site specific spectral response analysis
  • Construction engineering
  • Plate load testing
  • Pile installation supports
  • Geological and Geomorphic Terrain Evaluation for Airport Construction
  • Hydropower and Wind Energy

3. Geotechnical Laboratory Services and Drilling works

GSI has recently established a fully furnished geotechnical laboratory in order to provide quality service in the field of Geotechnical investigation and material testing including core drilling with extraction of core samples and undisturbed soil samples. Additionally, in difficult geological terrain and sub-surface structure, GSI has been using portable Down-to-the-hole (DTH) drilling machine (for maximum 20m depth) that also helps to save drilling time.

·         Geotechnical core drilling with extraction of core samples and undisturbed soil samples

·         Geotechnical Laboratory tests following ASTM and IS codes with detail report preparation

·         DTH drilling works

 

We provide Laboratory services for following

Direct Shear Test

Unconfined Compression Test

Triaxial Test

Atterberg limit Test

                Plastic limit

                Liquid limit

                Shrinkage limit 

Soil grain property Test using Sieve Analysis or Hydrometer (Particle Size Distribution PSD Test)

Permeability Test

                Equal head permeability test

                Falling head permeability test

Moisture Content Test

Specific Gravity Test using Pycnometer

Shrink and Swell Test

Proctor Compaction and CBR Test

Consolidation Test

 

GSI is equipped to provide quality drilling services in Nepal. GSI operates Rotary Core Drill Rig and portable DTH Rig, which enables us to offer a wide range of drilling, sampling, and monitoring services even in very difficult terrains. Drill crews of GSI meet the demands of clients, which range from geotechnical and environmental engineers to architects, contractors, developers, hydropower entrepreneurs and municipalities. 

GSI applies both auger and rotary drilling techniques to reach the required depth in exploration drilling. Our drill crew personnel are highly-trained and have experiences of working in famous construction and consulting companies of Nepal.

These are capabilities of GSI:

  • Geotechnical drilling
  • Environmental drilling
  • Standard Penetration Testing
  • Dynamic Cone Penetration Testing
  • Groundwater monitoring well installation
  • Rock coring
  • Undisturbed sampling and testing
  • Auger drilling
  • Rotary drilling
  • Piezometer installation
  • DTH drilling for anchor hole on slope,
  • Horizontal, incline and vertical drilling on slope
  • Split spoon and Shelby tube sampling
  • Continuous soil sampling for terrain development

Core Drilling Machine


GSI provides services for geotechnical investigation, exploring, prospecting, water well drilling and construction projects like road, bridge, water conservancy and hydropower, tunnel, industrial and civil construction as well as geological exploration, large diameter boring pile.

Portable pneumatic down-the-hole (DTH) drilling machine

For large diameter borehole drilling operations of rock excavation, especially advantageous for rugged and steep sloped terrain where other drilling rig can’t operate normally, GSI provides portable pneumatic down-the-hole (DTH) drilling machine available for the first time in Nepal. GSI is able to work in harsh environment, drilling in hard rock of small and medium-sized mine, earth and rock engineering and so on.

 


 

Our Team

GSI feels great itself in providing professional, responsive, cost-effective and evidence-based engineering consulting and scientific research services. We have over 18 professionals on staff, including engineers, geologists, environmental scientists, sociologists, engineering technicians, drillers and support staff members.

Meet our team.

Our Services

The services GSI provides can be vital to its clients for their projects and to the physical well-being of the public. Our clients rely upon us to do the very best job, every time - and we do. We are ready to provide efficient and cost effective services in the major fields of engineering.

See more about our services.

Our Expertise

GSI provides professional consultative services in Geotechnical engineering and geodisaster management as well as all kind of site assessments or construction quality control testing. GSI is pioneer to bring Austrian technology in Nepal for rock fall protection.

Visit our service pages.