GEOTECHNCIAL SERVICES
PRESENTATION

• Reinforced Earth Walls
•
Reinforced Soil Slopes
• Gabion Structures
•
Landfill Works
• Coastal and River Protection Works
• Rockfall Protection

Reinforced Earth Walls 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

The advantages of Reinforced
Earth Wall are as follows:
• Exceptional Wall Heights
• High load-carrying capacity
• Structural flexibility
• Fast-track construction
• Minimum working area
• Long-term durability
• Cost effectiveness
• Aesthetic appearance

Areas of use of Reinforced Earth Walls:
● Highways and roads
● Bridges
● Railway Structures
● Industrial
● Waterways and Dams
● Protective Structures
● Commercial and Public Facilities

Highway retaining walls are constructed to address many design problems and Reinforced Earth walls are almost always the perfect solution. There are simple ramps and complex grade separations at interchanges. Many cuts and fills are needed within highway rights-of-way, between highways and adjacent properties, or along rugged terrain. And there are challenging landslide repairs on mountain slopes. Reinforced Earth walls along highways and local roads frequently include structurally-integrated traffic barriers and a standard or customized architectural finish, adding beauty to functionality

Bridge abutments are considered critical structures and the unique strength and load distribution capabilities of Reinforced Earth Walls address that criticality in an economical and structurally efficient way. For many bridges, a spread footing bridge seat can be supported directly on the reinforced soil, thus eliminating the piles. When piles are necessary, they are easily fitted between the reinforcing strips or the strips can be pivoted to clear the piles, resulting in a simple retaining wall surrounding the abutment structure.
In both configurations, the shallow foundation depth typical of Reinforced Earth Wall structures and the limited use of cast-in-place concrete lead to significant time and cost savings.

Reinforced Earth technology is ideally suited for support of track bed, bridge and trestle abutments, for earth retention structures adjacent to rights of way, and for deflector walls to protect bridge piers from impact in the event of a derailment. The load-carrying capacity and resistance to both vibration and stray currents make Reinforced Earth a preferred solution for use on light and heavy rail transit systems and for freight, passenger and high speed railway projects.

Industrial projects often require loading ramps and truck dump headwalls which are subjected to extremely high loads. Reinforced Earth meets these needs at mines, power plants and manufacturing facilities.
“Slot” or “glory hole” bulk material storage facilities, having a “V” or a conical shape, respectively, are made of special sloping panels to provide live, gravity-retrievable storage of material such a coal. Traditional retaining walls and bridge abutments are also found on industrial projects as part of general site development and roadway systems.

Reinforced Earth walls are often used along coastal highways and riverbanks, for docks, sea walls, dams and spillways. Flooding, tides, impounded water and rapid water level drawdown all create complex hydraulic loading conditions that benefit from the open facing joints and free-draining backfill characteristics of Reinforced Earth structures. In addition, the precast facing panels can move slightly relative to each other, giving the wall system flexibility, resiliency, and the ability to resist storm-driven waves, debris and even pack ice.

Reinforced Earth technology is a proven and cost-effective solution for protective structures. Tested against both US DOD and industrial standards,
Reinforced Earth walls have a demonstrated ability to deflect or control explosive blasts and to resist thermal excursions of over 2200 °F. They are used for ammunition storage magazines and igloos on military bases, as well as to provide secondary containment walls surrounding oil and liquid natural gas storage tanks

Reinforced Earth walls are constructed to support buildings and garages, to create access or provide a safety runway, and to relieve earth pressure or other loads that would be applied to buildings. Commercial and public facilities such as airports, hospitals, apartment buildings, hotels, manufacturing facilities and department stores have all benefited from the strength, economy space saving and aesthetic benefits of Reinforced Earth technology.

Reinforced soil slopes (RSS) combine tensile inclusions
(typically geosynthetic reinforcement) with soil to create a composite material. The facing for a reinforced soil slope is typically determined based on the slope angle. Vegetation is typically used for slope angles less than 45 degrees and hard armoring is typically used for slopes steeper than 45 degrees.
RSS provides an economical and aesthetic alternative to conventional retaining walls, replacing them with natural, landscaped, sloping structures nearly indistinguishable from native terrain.

The advantages of Reinforced Soil Slope are as follows:
• Natural, landscaped, sloping structures
• Enhanced property values with a preserved native appearance
• Environmental considerations or compliance
• Smaller footprints with maximized usable land in undeveloped areas
• Reduced material and installation costs, including the use of on-site soils
• Elimination of surficial stability issues
• Effective resistance to differential settlement and
seismic activity

Areas of use of Reinforced Soil Slopes:
● River bank
● Stream bank
● Waterfront
● Upland slope
● Flood control site

Gabions are wire mesh baskets compactly filled with stones, rocks and other hard materials, properly wired together for construction of erosion control structures, and to stabilize steep slopes and prevent erosion. Along with it, gabions are also used as decorative structures in landscaping, building etc.
Arkada Group has experienced teams who pack the baskets by hand with an artistic flair that turns this construction product into an aesthetically pleasing solution as well.

In the course of supporting steep slopes, aesthetical and environmental requirements must also be fulfilled besides technical requirements.
Consequently, their use offers numerous advantages as compared to other types of structures.
Their advantages:
● various possibilities of installation,
● aesthetical appearance suiting the environment,
● long life
● easy, economical and quick construction,
● materials available near the site can be used,
● permeable structure not susceptible to frost damage,
● flexibility, strength.

Gabion structures can be built quickly and economically under all conditions and are especially suitable for stabilizing slopes in mountainous regions and in regions with unfavorable soil characteristics.
Areas of use of gabion structures:
● Mass gravity retaining walls
● Mechanically stabilized soil retaining walls
● Highway and railway
● Channel linings, river bed
● Culverts and bridge abutments
● Gully control, water velocity reducing structures

Soil reinforcement is not used for gravity wall. Therefore, a gravity wall has limited height because it relies on the weight and setback of the block alone to resist the soil pressures behind the wall.
Gabion retaining walls offer an economical and attractive alternative to concrete retaining walls. They can be filled with local stone or even concrete rubble.

Mechanically stabilized earth or MSE is soil constructed with artificial reinforcing. It can be used for retaining walls, bridge abutments, dams, seawalls, and dikes.
Mechanically stabilized soil retaining walls stabilize unstable slopes and retain the soil on steep slopes and under crest loads.
Mechanically stabilized GABION retaining walls are flexible, and soil movements do not result in the reduction of the load bearing capacity in the already constructed retaining wall structures, as opposed to retaining walls with a rigid concrete structure, where cracks and fractures may occur, which may result in the final deterioration of the retaining wall.

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.

• 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

• 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.

COASTAL AND RIVER PROTECTION
Sea Walls
Spur Dykes
Revetments
Groynes
Geotextile Tubes
Polymer Rope Gabions
Geotextile Bags
Sand Mattresses

A seawall is a form of coastal defense constructed where the sea, and associated coastal processes, impact directly upon the landforms of the coast. The purpose of a seawall is to protect areas of human habitation, conservation and leisure activities from the action of tides and waves. As a seawall is a static feature it will conflict with the dynamic nature of the coast and impede the exchange of sediment between land and sea.

Spur dykes are often constructed nearly perpendicular to the riverbanks, beginning at a riverbank with a root and ending at the regulation line with a head. They maintain a channel to prevent ice jamming, and more generally improve navigation and control over lateral erosion, that would form from meanders. Spur dykes have a major impact on the river morphology: they cause autonomous degradation of the river.
They are also used around bridges to prevent bridge scour.

In stream restoration, river engineering or coastal management, revetments are sloping structures placed on banks or cliffs in such a way as to absorb the energy of incoming water. In military engineering they are structures, again sloped, formed to secure an area from artillery, bombing, or stored explosives. River or coastal revetments are usually built to preserve the existing uses of the shoreline and to protect the slope, as defense against erosion.

A groyne is a rigid hydraulic structure built from an ocean shore or from a river bank that interrupts water flow and limits the movement of sediment. In the ocean, groynes create beaches, or prevent them being washed away by long shore drift. In a river, groynes prevent erosion and ice-jamming, which in turn aids navigation. Ocean groynes run generally perpendicular to the shore, extending from the upper foreshore or beach into the water. All of a groyne may be under water, in which case it is a submerged groyne. The areas between groups of groynes are groyne fields. Groynes are generally made of wood, concrete, or rock piles, and placed in groups.
They are often used in tandem with seawalls. Groynes, however, may cause a shoreline to be perceived as unnatural..

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 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:
• Galvanized Steel Wire Ropenet (GSWR)
• GSWR along with Chain Link Mesh / Hexagonal Double
Twisted Wire Mesh
• Low Energy Rockfall Barriers
It 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.

As Arkada Group, we have welltrained, experienced and professional designers, architects, engineers and technical staff to design and carry out geotechnical services in all above shown areas at highest quality. Along with it, we offer lower price and give guarantee for our services in comparison with other suppliers and contractors in
Azerbaijan.

Badamdar Highway 139
Baku/Azerbaijan
(+994 12) 502 36 44 www.arkada.az
info@arkada.az