Geotechnical

Reinforced Soil Structures

Reinforced soil structures (reinforced soil walls and reinforced soil slopes) are mechanically stabilized earth retaining systems that are technically proven and a cost effective alternative to the conventional concrete walls especially for the approach embankment to the bridges/flyovers. It is a high performance mechanically stabilized earth wall system comprising the following key components:

1. Galvanized steel strips as main reinforcement
2. Tie strips embedded in concrete panel for connection
3. Anchor blocks / angles for better pull out resistance
4. Precast RCC discrete panels

Geogrid Reinforced Soil Wall System

We also have expertise in Reinforced Soil wall (RS wall) with Geogrids as reinforcement elements comprising the following key components:

1. Connector for connecting the facia and geogrid
2. Facing system
   1. Precast RCC full height panel
   2. Precast RCC discrete panel
   3. Segmental concrete block
   4. Wraparound with vegetative facia
   5. Gabion facia

Advantages:

• Cost-effective soil retaining structures
• Simple and rapid construction procedures
• Less right-of-way acquisition and need less space for construction activities
• Stand much larger settlements
• Flexible and capable of absorb deformations due to seismic loading or poor subsoil conditions in the foundations
• Various facia options to provide aesthetic appearance and blend with the environment

Landfills are engineered facilities for the disposal of municipal solid waste and hazardous industrial waste. The objective of a landfill facility is to contain the waste in a manner that protects human health and environment.

Major components:

• Bottom and side liner system
• Leachate collection and removal system
• Leak detection system
• Gas collection and removal system
• Storm water management system
• Top liner system

Credentials:

• Expertise in planning, designing and constructing landfill facilities including all the allied infrastructure required for the smooth operations of facilities.
• Supplying and Installing landfill geosynthetics we are looking forward to get leadership position in landfill engineering Leading company which brought cutting edge technologies of geotechnical, geoenvironmental and ground improvement into landfill construction in the region.

Hydraulic Structures:

• Sea Walls
• Spurs
• Revetments / Launching Aprons
• Dykes
• Groynes
• Shore Protection

Concept:

• Sea Shore
  1. Wave Energy Dissipation
• River Banks
  1. Decrease in Tractive Shear Stress to prevent displacement / erosion of soil particles

System:

• Sand filled Geotextile Tubes
• Stone filled Polymer Rope Gabions
• Sand filled Geotextile Bags / Containers / Mattresses
• Geotextile Bag filled Gabions
• Woven Geotextile - Allows water to pass, retains soil and prevents erosion.

Geotextile Tubes:

• Geotextiles tubes are flexible long tubes made of suitable geotextile of dimensions in the range of 1 to 5 m diameter and 20 to 40 m length. The tube is manufactured from high strength woven geotextile which is durable, UV resistant and delivers high performance.
• Polymer rope gabions are prefabricated collapsible sausages, which are fabricated by a unique process in which the ropes are woven into a continuous net with square apertures of 100 and 150 mm. These nets are used to form cages of desired sizes and are filled with boulders.
• Manufactured from polypropylene (PP) ropes of diameter ranging from 9 to 16 mm, adequately stabilized for degradation against ultraviolet radiation
• Polymer rope gabions are ideally suited for use as an armor layer in resisting all erodible effects of waves.
• Boulder fill can be done in-situ or gabions can be prefilled and installed in place with the help of crane.

Geotextile Bags

Geotextile bags are small volume containers manufactured from high strength woven geotextiles to form a range of shapes such as pillow-shaped, box-shaped, etc., depending on the required application. Sand mattresses are flat mattresses made up of high strength woven geotextiles, which are filled with sand. They are used for scour protection and as filter material in coastal protection and river training structures.

Rockfall is an inherent hazard of mountainous terrains, which jeopardizes life and property and threatens the smooth operations of traffic lines especially during monsoons. We offer three systems of Rockfall protection which can be tailor made to suit the site conditions:

1. Galvanized Steel Wire Ropenet (GSWR)
2. GSWR along with Chain Link Mesh / Hexagonal Double Twisted Wire Mesh
3. Low Energy Rockfall Barriers

• Galvanized Steel Wire Ropenet (GSWR) is a patented system jointly developed by Lokal GROUP.
• Is made of high strength galvanized steel wire GSWR ropes having minimum breaking strength of 4.5 t.
• The aperture size of GSWR can be varied from 300 mm to 600 mm with tensile strength of ropenet varying from 6.7 t to 12.5 t.

Steel Gabions:

• Steel wire Gabions are factory manufactured / fabricated flexible wire mesh baskets.
• Factory fabricated boxes, with diaphragms at 1m c/c.
• Supplied at site in collapsible form
• Filled with stones to form variety of monolithic structures

Gabion boxes -1 m height, Gabion mattresses - 0.17 m to 0.6 m thick.

Double twisted hexagonal mesh:

• Double Twist – Continuous pairs of wire mechanically twisted (three one half turns)
• Double Twist Mesh – Thicker dia. wire at the edges called “Selvedge / Edge Wire”

Properties of the wire:

• Soft annealed, low carbon content mild steel provided with heavy coating of Zinc as per EN 10244-2 / ASTM A 641
• In aggressive environments, 0.5 mm thick PVC Coating is also provided.
• PVC coating is UV stabilised and complies with ASTM A 975.

Gabions for Retaining walls / Mass gravity walls / Landslide mitigation projects:

• Gabion retaining walls are mass gravity retaining structures, constructed with boulder filled Gabion boxes to retain the soil mass laterally.
• Using a lacing technique, Gabions are tied to adjacent Gabions to form a monolithic structure throughout the wall

Geosynthetic lining systems consist of either geomembrane or a combination of other geosynthetics like geosynthetic clay liner, which will arrest / prevent seepage & prevent contamination of aquifers.

Applications:

A. Hydraulic structures

• Canals
• Power channels
• Ponds
• Industrial reservoirs

B. Landfill / waste containment structures

• Hazardous waste landfills
• High volume waste disposal facilities (ashdykes, red mud pond, gypsum disposal sites)
• Municipal solid waste landfills
• Landfill capping