Taylor Made for Taylor Woodrow Development at Rownhams Southampton
Groundworker Gracelands required a cost effective solution to earth retention issues on this site and consulted with Geolex at the outset. Numerous retaining walls and steep slopes were required between house plots, gardens and external boundaries on a programme of works linked to the build release of plots at the clients discretion.
Construction of the walls had to be phased involving many visits to site by our build teams and contracts manager over an overall three year duration.
Both client and contractor opted for a split faced concrete modular block system proposed by Geolex which blended in well with the facing brickwork adopted for the houses.
This wall system suited the flexibility in build timings as the components were light weight avoiding heavy plant resources and were designed as reinforced earth structures where there was space to do so and the availability of site won suitable granular backfill, and gravity retaining structures where site dimensions and access constraints dictated.
In excess of 2500m² of this system has been designed and constructed in phases by Geolex since the first spade was put in the ground in early 2019.
Geolex Adds Da Structural Support for ASDA Chatham
An aged poorly constructed reinforced earth steepened embankment supporting the main store car park required remediation measures following excessive settlements and ground consolidation from the time of its original construction over 20 years ago.
The slope was up to 8m high over an extent of 100m and had undergone continuing lateral movement over the years under continual ground monitoring, meaning ASDA were unable to use a number of car parking spaces back from the crest of this bank.
Geology was made ground as reworked clay with flints with geogrid reinforcement overlying chalk at depth below embankment base level. We were successful with our value engineered bid to design, supply and install a soil nailed gabion faced earth retention structure as remedial measures with nails installed up to 9m in depth.
Geolex initially carried out a series of pre-construction supplementary boreholes in the car park at the crest to determine the depth and properties of the chalk bedrock in order to confirm the classification and bearing capacity of this founding strata and therefore prove that settlements were restricted within the body of the embankment.
Pull out testing on both sacrificial and working soil nails were carried out during construction to confirm the soil/nail interface bond strength used in the design.
Package of specialist works for new Amazon depot development.
Geolex have recently completed a package Design and Build contract with Foundation Piling on this major scheme where over 1000m² of reinforced earth slopes and in excess of 1000m³ of gabion gravity retaining walls were required in six locations on this widespread site.
The walls and slopes were essential in supporting the fill material, as site bourne excavation arisings, under a huge cut and fill exercise.
Careful coordination of the excavation, supply and suitability/compaction testing of the Class 2C Highways Specification material was paramount to the successful installation of these earth retention structures.
Geolex employed a robust QA system on site to achieve and record compliance with the earthworks specification and adopted specific health and safety height and access measures with close control and monitoring in order to safely work under the overhead high voltage electricity cables.
Isle of Wight
Off the shelf solution at this Superstore project.
Geolex were commissioned by Simons Construction to design, supply and install a 6m high reinforced soil embankment supporting the new Asda Superstore car park and access road on this site.
Work had to be carried out in stages to suit programme times and the critical events of the construction of the supermarket building. Site raised cement stabilised soil was used as suitable backfill throughout the structure which realised cost savings and environmental gains for the client and local community.
Geolex also installed a Kingpost PC retaining structure around the petrol filling station side of the site to complete all earth retention works on this development.
Torbay Road, Coventry
Torbay or not Torbay
That was the question. Or more specifically, how to arrest the movement of an existing brickwork boundary retaining wall affected by years of seasonal movement and groundwater pore pressures.
Answer: Drain the wall with weepholes and land drainage systems and anchor the structure back into competent ground with the installation of friction anchors.
An existing domestic back garden environment with only footpath access and existing services determined a measured and well planned direction to these works, in order that zero risk Health and Safety Management was realised. Full consultation with all services bodies and local authority combined with on site continuous inspections underpinned this approach.
The design of the ground anchors and drainage was determined by firstly carrying out a slope specific ground investigation and topographic survey with soil parameters established through inspection on site and laboratory testing.
Our private client was very pleased with our no nonsense but detailed and thorough approach, led by effective geotechnical design with minimum disruption and disturbance on site.