geotechncial services presentation. geotechnical services arkada group offers the following...
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GEOTECHNCIAL SERVICES PRESENTATION
GEOTECHNICAL SERVICESArkada Group offers the following Geotechnical Services.• Reinforced Earth Walls
• Reinforced Soil Slopes
• Gabion Structures
• Landfill Works
• Coastal and River Protection Works
• Rockfall Protection
REINFORCED EARTH WALLS
WHAT ARE REINFORCED EARTH WALLS?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
WHY ARE REINFORCED EARTH WALLS USED?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
WHERE CAN REINFORCED EARTH WALLS BE USED?Areas of use of Reinforced Earth Walls:
● Highways and roads
● Bridges
● Railway Structures
● Industrial
● Waterways and Dams
● Protective Structures
● Commercial and Public Facilities
HIGHWAYS AND ROADS
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
BRIDGES
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.
RAILWAY STRUCTURES
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
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.
WATERWAYS AND DAMS
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.
PROTECTIVE STRUCTURES
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
COMMERCIAL AND PUBLIC FACILITIESReinforced 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
WHAT ARE REINFORCED SOIL SLOPES?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.
WHY ARE REINFORCED SOIL SLOPES USED?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
WHERE CAN REINFORCED SOIL SLOPES BE USED?Areas of use of Reinforced Soil Slopes:
● River bank
● Stream bank
● Waterfront
● Upland slope
● Flood control site
GABION STRUCTURES
WHAT ARE GABIONS?
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.
WHY ARE GABIONS USED?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.
WHERE CAN GABIONS BE USED?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
MASS GRAVITY GABION RETAINING WALLSSoil 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 GABION RETAINING WALLSMechanically 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.
CHANNEL LININGS AND RIVER BED
CULVERTS AND BRIDGE ABUTMENTS
HIGHWAY & RAILWAY
LANDFILL WORKS
WHAT IS LANDFILL?
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 OF LANDFILL• 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
OUR CREDENTIALS FOR LANDFILL• 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.
LANDFILL WORKS – BOTTOM AND SIDE LINER SYSTEM
LANDFILL WORKS – LEACHATE COLLECTION AND REMOVAL SYSTEM
LANDFILL WORKS – LEAK DETECTION SYSTEM
LANDFILL WORKS – GAS COLLECTION AND REMOVAL SYSTEM
LANDFILL WORKS – STORM WATER MANAGEMENT SYSTEM
LANDFILL WORKS – TOP LINER SYSTEM
COASTAL AND RIVER PROTECTION WORKS
COASTAL AND RIVER PROTECTION
Sea Walls
Spur Dykes
Revetments
Groynes
Geotextile Tubes
Polymer Rope Gabions
Geotextile Bags
Sand Mattresses
SEAWALLS
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
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.
REVETMENTS
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.
GROYNE (GROIN)
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..
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 GABIONSPolymer 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 MATTRESS
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 PROTECTION
WHAT IS ROCKFALL?
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.
Galvanized Steel Wire Ropenet (GSWR)
GSWR along with Chain Link Mesh / Hexagonal Double Twisted Wire Mesh
Low Energy Rockfall Barriers
Why ARKADA GROUP?
As Arkada Group, we have well-trained, 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.
Thanks For Your Attention
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