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CONSTRUCTION OF REINFORCED SOILWALL AND TECHFAB METAL GABION RETAINING WALL AS COMPOSITE STRUCTURE


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PROJECT DESCRIPTION
Project:

Construction of Reinforced Soil Wall and Techfab Metal Gabion Retaining Wall for Soil Stabilization, at Mudked.

Client:

Public Works Department

Contractor:

M/s Sharda Construction and Ganesh Enterprise

Product:

Zinc + PVC Coated Gabion
Knitted & PVC coated PET Geogrids

Manufacturer:

TechFab (India) Industries Ltd.

Design Concept:

M/s Best Geotechnics Pvt. Ltd.

Approach Height:

For Reinforced Soil Wall - 2.0m to 10.0m
For Gabion Metal Retaining Wall – 2.0m to 5.0m

TechFab Metal Gabion -Longitudinal View
TechFab Reinforced soil wall - Installation
The Problem:

There is a requirement for Retaining structure for Rail over bridge at Mudkhed, near by the water body. It is mandatory to protect the wall against scouring. Considering the structure alignment near by the water body, need arises for detail analysis and designing of retaining wall which can withstand the water current and also to be protected against scouring. Reinforced soil wall is the cost effective solution for the retaining wall. For protection against scouring gabion wall has been proposed in front of Reinforced soil wall, near by the water body. Reinforced soil wall founded above the embankment protected with Gabion retaining wall is designed as shown in the photographs, above.

The Solution

Gabion Retaining walls are constructed, to protect against scouring are flexible structures which are very suitable in case of retaining structures for protection, near by the water body. Gabions can take settlement which may occur in such regions. Walls of varying height of (2.0m to 5.0m) were proposed. TechGeo Nonwoven Geotextile PR 20 was placed at the rear end of gabion wall which acts as filter.

TechFab Metal Gabion
TechFab Reinforced soil wall

Reinforced Soil Wall is constructed for Rail over bridge at Mudkhed. Walls of varying height of (2.0m to 10.0m) were proposed using square panels (1500x1500mm). RS Wall has been proposed considering the minimum foundation depth of 1 meter in the compacted sub grade. Outside RSW, is protected with Gabion wall. Height of the Gabion wall is decided considering the HFL. Gabions are suitable for energy dissipation against water current and also protect the wall against scouring. Engineered fill with design consideration are provided as per the drawings and methodology for the RSW and Gabion wall.

TechFab Metal Gabion and Reinforced Soil Wall satisfied all the technical parameters for their effective usage. The execution was successfully completed in time.

Benefits of TechGeo Nonwoven Geotextile

Acts as a “Filter” by preventing the backfill material from being washed out through Gabion face.

Acts as a “Separator” between the backfill material and the Gabion facia and thereby prevents the mixing of the tow.

Benefits of Reinforced Soil Wall & Gabion wall over Conventional RCC Retaining Wall, for such application:

TechFab Metal Gabion was suggested for retaining and scouring protection purposes in lieu of the conventional R.C.C Retaining Wall for achieving the following advantages:

Flexible structure compare to R.C.C Retaining wall.

Easy in construction, as it does not require skilled labourers.

Does not require curing time as in case of R.C.C Retaining wall.

Energy dissipation is possible due to the voids in the boulders, and also accommodates differential settlement very well due to its flexibility.

Cost incurred is very less compared to conventional retaining structures.

FOR FURTHER DETAILS

TechFab India Industries Ltd.
711/712, Embassy Centre,
Nariman Point, Mumbai – 400021

022-2287 6224/6225

022- 2287 6218

anant@techfabindia.com

www.techfabindia.com

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