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USE OF TECHGRID GEOGRID FOR 45M REINFORCED SOIL SLOPE, SHILLONG


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PROJECT DESCRIPTION
Project

Supply of Techgrid Geogrid for Reinforced Soil Slope at Shillong Bypass Connecting NH40 to NH44, Meghalaya.

Design

M/s Best Geotechnics Pvt. Ltd.

Product :

TechGrid – Geogrid (Knitted & PVC coated Polyester Geogrid), Techgeo Nonwoven Geotextile & Geotextile bags; Techfab Metal Gabions

RE Slope Height:

Height varies from 28meters to 45meters

Manufacturer:

TechFab (India) Industries Ltd.

Techfab Metal Gabion Wall Layout – Initial Stage
RSS with TechGrid GeoGrid – Under Construction
Reinforced Soil Slope – Top View
Pre Final Stage of Construction
SALIENT FEATURES
Soil Reinforcement:

Techgrid Geogrid (Knitted & PVC coated Polyester Geogrid).

Facing:

Wrap-around Geogrid facing for Reinforced Soil Slope, with Geotextile bags filled with sand. Techfab Metal Gabion as toe wall.

Design Methodology :

Ressa software for analysis.

Techfab India Scope :

Supply of TechGrid Geogrid, Metal Gabion, Nonwoven Geotextile.

THE PROJECT

There is a construction of a Reinforced Soil Slope at Shillong bypass (Meghalaya) connecting NH-40 and NH-44 with the application of geosynthetics in that region which has natural mountain terrain, deep valley at rare end side, with touch of natural green aesthetic and state of the art design & architecture.

The reinforced soil slope & gabion retaining wall at toe has been proposed to slope elevated terrain in concurrence to design, consultant & architect. Their joint views have taken into many revisions before arriving at practicable solution which encircles the aesthetic view with as a final outcome at rare deep valley portion, based on the submission of M/s Best Geotechnics.

Keeping the above perspective, the scope work of Techfab India Industries Ltd., was to meet:

Supply of Techgrid Geogrids, Metal Gabion, Nonwoven Geo textile.

Supervision.

Method statement:

Installation of gabions, geogrids cannot be initiated until excavation; foundation preparation and levelling of soil have been completed, and properly inspected by the site engineer.

In case of unsatisfactory preparation of sub grade by the installer, it must be rectified as guided by the Site Engineer.

Excavation:

Excavate the sub grade vertically to the plan elevation & horizontally to the extent of the geogrid lengths.

Remove & replace the unnecessary soil not meeting the requirement given by the design engineer with the approved materials from owner’s side.

Protect excavated materials that can be used as a backfill for the reinforcement zone against weather.

Foundation Preparation:

Over- excavated area the sub grade shall be in maximum loose lifts of 250mm & shall be compacted to a minimum of 95% Standard Proctor Dry Density with 1% to 2% of OMC in accordance with relevant standard.

Engineer In Charge inspect for the sub grade soil properties for the reinforced zone should fulfil the requirements according to design & drawings.

Construction:

Construct reinforced soil slope in accordance with the approved design & drawings.

All precautions are to be taken while placing the geogrids to avoid damages.

Reinforced soil & backfill must fulfil the requirements according to the approved design

Single Layer Plan
Plan
Typical Cross Section
Reinforced Soil Slope – Typical Cross‐section
Design Checked by IIT (Madras) Prof. K. Rajagopal

The supplied materials, Techgrid - Geogrid, Nonwoven Geotextile, and PVC coated galvanised Gabion are the in house manufactured products of Techfab India Ltd., in their state of the ISO 9001:2008 certified factory under the proven and tested qualified experienced faculties having edge of national globally accredited QTP & QTC.

After Completion of Project with Vegetation:
Letter from G R Infraprojects Ltd. to TechFab India:
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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