GEO-Fabrics-COL-Logo-155x45.png (1)

Geosynthetics in Landfill – Whitehead Case Study

Seepage Control & Membrane Protection

Project Information

Client

Viridor Waste Management

Contractor

Cheetham Hill Construction

Designer

Wardell Armstrong

Product Functions

Drainage & Protection

Share

A design problem at Whitehead Landfill arose in the preparation of a side slope to part of a waste cell. To optimise land usage, the side of the waste cell would be constructed close to an existing canal where the average water level would be well above the cell base.

It was considered prudent to introduce a positive cut-off drain to intercept seepage from the canal and prevent a build-up in pore water pressure beneath the liner. This would cause uplift to the mineral and geomembrane liner.

GPT5, a geocomposite drain, was laid down the cell slope, leading to a stone drain at the toe. GPT5 is a non-woven needlepunched geotextile with longitudinal band drain inclusions at regular centres across the width of the roll. This type of geotextile in unique in having a level of in-plane flow capacity which means that it acts as a secondary drain feeding the primary band drains.

The clay liner was compacted on top of the drain to ensure that seepage would be channeled to the band drains.

GPT products are simple to install and require the minimum depth of valuable void space required for waste. These products are sufficiently durable to withstand the high level of compaction to achieve the clay's specified density.

GEOfabrics HPS14 was chosen as the optimum geotextile to protect the 2mm HDPE geomembrane from puncture by the coarse leachate drainage stone chosen by the contractor. This was confirmed by a cylinder test as required by The Environment Agency.

View
Case Studies

Geotextiles for Coastal Protection – HPS14C Case Study

GEOfabrics HPS14C has been successfully installed below the rock armour at Withernsea. Nearly 70,000 t...

Urban Greening Project – Rome

Municipio Roma VII is the most heavily populated Municipio in the Italian Capital with more than 300,0...

Residential Root Protection – CuTex Case Study

As part of a wider contract PBA Solutions were responsible for the design and installation of a tree r...

Old Colwyn Case Study – HPS17C Coastal Protection

Geofabrics HPS17C has been successfully installed below the rock armour on Old Colwyn Promenade Coasta...

Rock Armour Geotextile Filters – A19 Case Study

On 18th February 2020, the A19 was closed between Chapel Haddlesey and Eggborough, due to collapse fol...

GEOfabrics Laboratory – UKAS Accreditation

Our onsite laboratory is accredited by UKAS to ISO 17025:2015 for the competence in testing to several...

View our Technical Hub

Industry News

ISO 14001 & 9001 Certification

GEOfabrics certified to ISO9001 and ISO14001

Flood and Coast Telford

Future Landscape and Playspaces 2023

Recent Tech Papers

Root Barriers Comparison Report

Geocomposite to Prevent Pumping Failure

CuTex Root Barrier Effectiveness Report

Development of Geocomposite to Prevent Mud Pumping

Geocomposite Material In Landfill Containment

Geosynthetics in Coastal Engineering Protection

Difficulties with Unit Weight

Designing with the Cylinder Test

Recent Downloads

Installation Guides & Certificates

ISO 14001 & 9001 Certificate

Case Studies

Culemborg Geldermalson Rail Inspection Pad—RK12 Drainage Geocomposite

Design Information

LFX Stone Selector Guidance

Design Information

Cylinder testing geomembranes and their protective materials: LFE2

TrackTex Anti-Pumping Geocomposite

TrackTex G Dual DoP No112-2022-02-21

TrackTex Anti-Pumping Geocomposite

TrackTex Dual DoP No043-2022-02-21

Design Information

Introduction to Geosynthetics

Rail Rig Laboratory Test

Find out how GEOfabrics can help you
Contact us for more information and assistance.

View our
Product Categories

GEOfabrics has a range of products across a variety of different sectors

Cuspates

Geocomposites

Geotextiles

View Sectors

GEOfabrics cover a wide range of sectors.

Root barriers

Construction

The construction industry is under ever increasing legislative and commercial pressure which require innovative appro...

General Civils

The use of geosynthetics in civil engineering applications has continued to grow exponentially over the last two deca...

Landfill

The design of an engineered waste containment system is considered a continuous project, including all operational ac...

Coastal & River Defence

Marine erosion can occur when the sea is energised by wind and gravity to produce waves, tides, and currents: it is c...

Rail

Geosynthetics have been employed to perform a number of functions in track construction and rehabilitation for almost...
Discover how GEOfabrics can help you today
Contact us for more information and assistance.