Terre Armée Business Lines

REGISTERED OFFICE Reinforced Earth India Private Limited

E 11, Block B-1 Extension (Opposite NTPC Badarpur) Mohan Co-operative Industrial Estate, Mathura Road, New Delhi 110044 T +91 11 4645 7600 - 7601 | F +91 11 4645 7630 E info@terrearmeeindia.com | W terrearmeeindia.com

ZONAL OFFICE Bengaluru | Kolkata | Mumbai

Integrating Innovative Engineering Solutions

SLOPE ENGINEERING AND GEO-HAZARD SOLUTIONST E R R A S L o P E ® | R o c k FA L L P R oT E c T I o n

Rock Fall Protection

TechSpan® and TechBox™ Technology - the perfect custom-designed precast arch box sheds and shelters.TechSpan® is one of the most reliable, cost-effective precast concrete arch system available for cut ‘n’ cover structure. TechSpan® is a two or three hinge arch system. The structures are formed in reinforced concrete and are delivered to site as segmental precast elements - ready for immediate and rapid, installation.

TechBox™ are precast box structures. Terre Armée has developed expertise in optimizing soil-structure interaction mechanics to minimize section sizes and allow rapid on-site regulated installation with precast units for buried ‘box’ structures.

The TechBox™ system is based on precision Precast Concrete modular element comprising free standing walls and over bridging units and has all features and advantages similar to that of TechSpan®.

Slope Engineering and Geo-Hazard Solutions

TerraSlope®

Terranail®

Nut

Anchor plate

Lock nut (optional)

Lock nut (optional)

Bar Freyssi 670

Spring baskets

Coupler

TerraAnchor™

TerraAnchor™ is driven and stressed earth anchor system used as soil reinforcement for slope stabilization and active protection measures with high tensile netting. TerraAnchor™ is used for temporary and permanent applications (more than 70 years design life) by enhancing the durability protection of the components of the system. TerraAnchor™ is best suited for strengthening of collapsible and uncompacted/ unconsolidated soils.

TerraLink™

Slope stabilized by nails

Facing

Soil reinforcements

TerraLink™ is a logical, complementary technique. In perpetuating its legacy for breaking new ground, Terre Armée India has developed the TerraLink™ technology, which allows for the construction of new Reinforced Earth® structure connected to existing stabilized slopes through by way of TerraNail® or TerraAnchor™.

The Reinforced Earth® and TerraLink™ technologies can be combined to ensure a continuous facing and sound structural behavior.

TerraLink™ offers the following benefits:• Less or no excavation (balance between cut and fill is ensured)• Adaptability to existing structure• Custom solution to specific soils• Compatibility with Reinforced Earth® techniques with secured

continuity of load transfer

Applications:• Hill road widening • Hill bench widening to accommodate space for various utilities,

services• Construction of retaining structures where space is a constraint

Combination of TerraLink™ and TerraNail® with TerraAnchor™ on top slope

Typical slope stabilization using TerraNail® and TerraAnchor™

Typical TerraLink™ structure with vertical facing

TerraWall® Reinforced Earth wall

Slope stabilization using TerraNail®

TerraSlope® Reinforced Earth steepened slope

TerraTrel™ Reinforced Earth wall

T hroughout history, nature’s forces have proven to be overwhelmingly dangerous, causing mammoth destruction. Particularly in hilly terrain, the possibility of such natural disaster is very high in terms of landslide, unstable slopes, rockfall and debris flow.

Terre Armée India, drawing on global expertise, fulfills the demanding requirements of slope engineering and geo-hazard solutions.

Terre Armée in India offers bespoke TerraSlope® technique to build steepend slopes for slope engineering, slope management and geo-hazard solutions.

• Construction of ‘Flexible’ Reinforced Earth Retaining Structures on Hill and Valley Side: GeoTrel® and TerraTrel®

• In-situ Slope Stabilization: TerraNail®, TerraAnchor™ and FreyssiAnchor™

• Internal Drainage Improvement System: TerraFlow™ and TerraTextile™

• Slope Erosion Protection: TechRevetment®, TerraGreen™ and TerraWeb™

• Hybrid Soil Reinforcement Solution: Composite Earth™ and TerraLink™

‘Ready to Install’ GeoTrel® and TerraTrel®GeoTrel® and TerraTrel® are Reinforced Earth® steepened slopes or walls based on the project specific requirements. GeoTrel® and TerraTrel® are used for building retaining structures on valley sides and protection structures on the hill side.

These are internally stabilized earth structure, constructed with alternate layers of granular backfill and metallic / non-metallic soil reinforcing strips. These strips are mechanically connected with a prefabricated facing, to ensure effective transfer of load. Galvanized welded steel mesh is used as facing for permanent GeoTrel® or TerraTrel® structures. The flexibility and high load bearing capacity of GeoTrel® and TerraTrel® makes them very suitable for the construction of tall structures in high seismic prone zones. Mechanically connected facings act as an active system with predictable performance during the service life of the structure.

These structures can be either at an inclination of 70° or less (steepened slope) or it can be at an inclination of more than 70° (wall). Vegetation is grown on the face of steepened slope, and boulder is used behind the facing mesh of walls to provide a ‘mineral’ finish. In GeoTrel® system, both smooth and High Adherence GeoStrap® is used as soil reinforcement, and in TerraTrel® system the soil reinforcement is High Adherence® and High Adherence Reinforced® galvanized steel strips. High Adherence® systems improve soil reinforcement interactions, offering enhanced pull out and direct shear properties, especially in high seismic zones and structures subject to other dynamic loads.

Both GeoTrel® and TerraTrel® offer following benefits during construction:• All components are factory produced and supplied at site

as ‘Ready to Install’• No special infrastructure like a casting yard is required• Easy to install, without cranes. Lifting equipment is required

for installation• Standardized system with proven performance record• Low carbon footprint• Better equipped to withstand post construction settlements

and seismic loads

TerraNail® is an in-situ method of reinforcing the existing soil/rock mass by installing solid or hollow fully threaded hot-dip galvanized high tensile geotechnical steel bars encased in grout. TerraNail® is typically used to stabilize existing slopes or excavations as construction proceeds from top-down (preferred construction) or sometimes bottom-up. The length and diameter of the TerraNail® are determined through global stability analysis of the unstable slope.

Terranail® is ideal for the following:• Stabilization and strengthening of existing embankments

and slopes• Repair and rehabilitation of slope failures and landslide • Tunnel portal stabilization• Repair and strengthening of failed or deformed retaining

structures• Strengthening of bridge abutments• Widening and strengthening of hill roads• Widening of existing retaining structures in highways• Road under bridges and underpasses in cutting mainly

for urban grade separators