A comprehensive and creative design response to flood risk and drainage constraints is crucial to the efficient delivery of sustainable development. Working collaboratively with our clients and design partners, our hydrology teams expertly assess development needs. We weave design solutions into the scheme to defend and service the site without compromising development potential or amenity value.
Jubb supported Gallagher Estates in developing a 24Ha greenfield site at Land South of Gallows Hill. The development consisted of 450 residential units to be served by a primary spine road, SuDS features and two new signal controlled junctions. Both new junctions involve partial dualling of Gallows Hill and Europa Way (A452). Jubb worked with Gallagher Estates to establish earthworks, infrastructure and drainage strategies for the site and identified how to overcome challenging topography to provide surface water attenuation for the site whilst also conforming to public open space requirements.
Jubb produced detailed design of the primary spine road and associated infrastructure through the development to meet the local authority and water authority’s adoption requirements. The steep nature of the site resulted in significant re-modelling of earthworks in lower lying areas to accommodate a detention basin adopted as public open space. This involved diverting the Tach Brook Tributary which was detailed by Jubb to gain approval from the local authority.
Jubb were appointed to provide specialist land remediation advice along with detailed civil and structural engineering input for a new 250 unit residential site in Sittingbourne. Historically, parts of the site were a former gas works with the remainder forming a precast yard for Milton Pipe. Consequently, the land was underlain by significant ground contamination and required extensive remediation of in situ soils and ground water plus residual risk management measures to dwellings and garden spaces. The engineering challenges of the scheme were complex, and Jubb was instrumental in developing cost effective solutions to the constraints posed by contamination, difficult topography, boundary constraints and spatial constraints.
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This large scale development involved the redevelopment of an existing private airfield to provide around 2000 homes, along with a small commercial estate and education and community facilities for the area.
Jubb are supporting Persimmon with the development of the 141Ha site on the former Grove Airfield. Jubb are providing support on the main infrastructure and SUDS drainage solutions, global earthworks strategy and providing parcel support for the detailed civil engineering design.
The primary infrastructure for highways has been designed in detail and is being taken through technical approval with Oxfordshire County Council, with the SUDS drainage systems being offered for approval through the Vale of White Horse Lead Local Flood Authority through the planning process. Surface and Foul drainage is being offered under Section 104 for adoption by Thames Water and Jubb are liaising closely with Thames on a bespoke agreement to provide a Strategic Sewer and Pumping Station for the area of Grove as a whole, which will be situated within the development.
The SUDS strategy allows for the phased approach to the formation of swales and ponds, whilst maintaining flows from the remaining undeveloped areas during the build. Multiple control features have been developed in order to maximise the storage within the swales and ponds in order to achieve a 32% reduction in the greenfield discharge rates, to improve downstream flooding.
As parcels are brought forward for development, the drainage and earthworks strategies are further refined to ensure the most efficient solutions are identified.
Jubb supported Gallagher Estates with this 66Ha greenfield site for ‘disposal for residential’ development. Jubb worked alongside Gallagher Estates to establish site wide strategies for earthworks, drainage and infrastructure providing holistic models to inform viability and potential phasing.
The primary infrastructure for highways and drainage was designed in detail and taken through to technical approval with Warwickshire County Council and Severn Trent Water. The highway infrastructure included a new primary estate road and bus route through the site with several new junctions to the existing highway network as well as off-site alterations.
The surface water drainage strategy for the site was designed to provide flexibility in the phasing of the site development. Attenuation ponds were designed to meet the local council’s requirements for adoption and to make use of the existing fishing ponds while tying in with the proposed landscape strategy.
This greenfield site was developed on behalf of M Baker Group to provide serviced parcels of land for mixed use development including a residential estate, a care home and a public house. Jubb were engaged at an early stage to provide initial designs to support an outline planning application for the site.
An enabling works package was then designed and delivered by Jubb which included off site highway and junction improvements along with primary on site infrastructure. Traffic signals improvements and services diversion and supply contracts were placed in parallel with the construction contract, to be programmed by the Contractor.
The works were procured via a single stage tender process using the NEC Option A Priced Contract with Activity Schedule prepared and administered throughout the build by Jubb. Client support was provided to assist with parcel disposal and liaison with tenant’s construction teams.
The Home Park Redevelopment Masterplan will see the delivery of a mixed-use development around the home of Plymouth Argyle. This includes the redevelopment of the Mayflower Grandstand, including increased seating capacity and conferencing facilities.
The proposals also include mixed-use development at Home Park and the Western Gateway Site, which includes a range of uses such as the Mayflower Ice Arena and a 116-bed hotel.
Jubb were responsible for the transport planning, structural engineering and flood risk & drainage aspects of this project.
Key challenges resolved by Jubb involved the preparation of the Heads of Terms for an Event Management Plan to facilitate large conferencing events at Home Park, as well as the redesign of the neighbouring Park & Ride car park to maximise capacity and cater for the additional parking demand of the development proposals.”
The Butts Bridge scheme represents a complex programme of highway improvements required to facilitate the delivery of the South Alton Masterplan. The scheme includes the demolition of the existing brick arch railway bridge over the A339 at Alton and replacement with a new 32m skew span weathering steel structure. The bridge replacement delivers the space required to allow the delivery of a major new junction to create capacity for the new residential development proposed. Additional highway links, footway upgrades and development access junctions were also required.
Jubb have provided specialist transport planning advice to promote the South Alton Masterplan through planning and have delivered the full engineering design of the enabling infrastructure and bridge works. The bridge work involved close liaison with Mid Hants Railway Trust to future proof the envisaged expansion of railway services through widening of the structure for a second line and the delivery of strengthened embankments to meet modern day design standards.
As lead consultant, Jubb also directed the construction procurement providing all design, specification and contract inputs and managed the delivery of the project as Contract Administrator.
Major Harbourside redevelopment of the historically important Barbican area in Plymouth. The project involved the construction of some 300 prestige apartments, retail units and offices up to 9 storey heights.
Jubb provided full Civil, Structural, Highway and Geotechnical Engineering Consultancy Services as well as providing the Flood Risk Assessment for the development site to PPG25 requirements, and the Environment Agency’s approval and also incorporate the Archaeologist’s requirements for protecting buried artefacts of particular historical interest in the design of the substructure and drainage works
The community of Seaton has worked with the local authorities (East Devon District, Devon County and Seaton Town councils) and the Jurassic Coast World Heritage Team to develop a visitor centre for Seaton, to reap the benefits from the town’s unique location as a gateway to the Jurassic Coast World Heritage Site and the Axe Estuary Wetlands.
The three linked pods are constructed of steel frames supporting SIP panels to the walls and roof creating large exhibition spaces and a restaurant.
This new Pavilion Project completes the final phase of major development at Somerset County Cricket Club. The work required the demolition of the Old Pavilion, St. James Building /Deane Suites, and Ancillary Buildings to facilitate the construction of the new Somerset Pavilion.
The project provides a first class facility for Members, Spectators, and Visitors to enjoy domestic cricket, and enables the Somerset Pavilion to be used to generate commercial revenue from non-cricket related activity. The facility also allows Somerset County Cricket Club to meet the technical specifications for International Cricket in combination with other ground improvement works.
The project comprised of a new 1650 seat grand stand, restaurant, retail outlet, office areas, conference & media facilities, roof top terrace and feature canopy structure. The main frames were formed from hot rolled steel works with hollow core plank floors, and precast stadia elements for the seating areas. The ground conditions required a deep foundation solution, therefore piles were utilised in combination with ground beams and a suspended ground floor slab.
The project was designed using 3D analysis (Building Designer) software and detailed in REVIT.
Five Islands School is the first ‘Through School’ catering for 3-16 year olds to be built in the UK and is located on the Duchy island of St Mary’s adjacent to a sensitive SSSI site.
The project consisted of the construction of the school buildings, provision of a sports halls (four courts), indoor and outdoor formal and informal educational and recreational facilities including a multi use games area, senior and junior hard play areas.
Jubb’s involvement included all the structural and infrastructure works, external earthworks, flood risk assessment and traffic impact assessment
As part of the MoD Debut South West Regional Prime Contract for Defence Estates for the relocation of the Allied Rapid Reaction Core from Germany to RAF Innsworth, a new Briefing Theatre adjacent to the refurbished HQ office buildings was proposed.
At its centre the Briefing Theatre steel frame building provides a state of the art 500 seat tiered auditorium, with four adjacent syndicate meeting rooms, main foyer and break out area for the ARRC Command.
The flagship refurbishment of the 1930’s Royal Artillery Headquarters Officers Mess at Larkhill Camp, Salisbury Plain as part of the ASPIRE Defence Capital Works programme PFI for the Army.
As part of the works the internal arrangement of all the accommodation rooms above the ground floor public rooms together with the two adjoining accommodation wings have been converted by turning three existing single rooms into two with en-suite, this involved removing existing structural walls and constructing new buttressing walls which had CTM implications.
One of a series of projects for the MoD as part of the Debut South West Regional Prime Contract for Defence Estates for the construction of a new Junior Ranks Kitchen and PAYD Mess Facility together with Bar, Retail and Social facilities.
The building was cruciform in plan and comprises 3 areas of propped portal frame construction. The Kitchen with the Plant Room over is located within the pitched roof void with louvre access in the gable end to facilitate plant removal. The central area consists of the Servery, Dining Hall, and Bars. The end wing provides for Retail, the Social Facilities and the TV Rooms.
On the back there is a portal framed delivery canopy to the back of house kitchen area and covered recycle bin store.
The project involved the creation of 37,000m² of warehouse space surrounded by a private access road and haulage, with a significant earthworks scheme to create an acoustic bund to the perimeter of the site.
The Regional Distribution Centre is located adjacent the M271 near Southampton. It includes the main warehouse, loading and unloading areas, cold rooms, freezer rooms and regional office block.
The structural solution involved piled foundations, reinforced ground slabs and a braced steel structure with long span structure to provide maximum internal space.
Detailed assessment of ground engineering issues such as mine workings, remediation and cut/fill along with drainage strategy and FRA plus off-site highway works and abnormal cost planning.
Jubb were commissioned to provide transport, civil and ground engineering consultancy services to support the promotion of 18.56 Hectares of employment land through the local plan process, at land to the east of Wilson’s Lane, Coventry.
The promotion site would see the development of several units which when developed would provide some 804,090 sq.ft (Approx. 74,700 sq.m) of Distribution and Warehousing floorspace.
Jubb prepared highways, flood risk, drainage, utilities and ground condition assessments which have informed the strategies which have supported the site through its promotion.
The proposed £7 million development will be constructed on a brown field site in Aberaman, Aberdare in the South Wales Valleys. This development will consist of a 40 unit extra care facility on the former Maesyffynnon residential care home. The development seeks to provide independent apartments within a single building for those aged 50 plus with onsite assistance available to residents with decreased mobility or other similar conditions. In addition to the residential units the building will provide a number of communal facilities such as dining room / café; hair salon; therapy room and a winter garden.
This development will be constructed using a modular construction system. This process allows for the building to be constructed off-site, under controlled plant conditions in a faster time period compared to traditional construction methods. Jubb are acting as structural and civil engineers providing foundation design, drainage design and external works to the site.
This mixed use, four level scheme extended the existing Jackson Square Shopping Centre by over 120,000 sq.ft with Sainsbury’s as the main anchor and provided a new 700 space multi-storey car park. In addition, the development delivered 200 apartments and opened up British Waterway’s River Stort Navigation to form a new vibrant public square.
Jubb were the Structural and Drainage Engineers for this project and provided planning and detailed construction design services for flood risk mitigation, geotechnical, contaminated land remediation and urban drainage. The surrounding land had a recent history of flooding and we worked in close collaboration with the EA, East Herts DC, British Waterways and Herts Highways to devise and refine a comprehensive flood mitigation strategy for the development. This included detailed catchment modelling, channel improvement works, overland flood routes, covered storage areas and flood warning procedures whilst protecting the riverside landscape and wildlife.
We are appointed to provide transport planning, utilities flood risk and drainage advice on a proposal for a new Garden Village in Hetsmere District for approximately 6,000 dwellings and associated uses. This exciting new community would deliver vital housing in the district over the next 15 years and create a high level of self-containment, hence keeping external impacts to a minimum.
This major redevelopment of an 18-hectare, former caravan park in a prime location at Seaton, created 500 residential units, a hotel, 70,000 sq ft of food retail and a themed Visitor Centre.
The site’s low-lying location adjacent to environmentally sensitive marshes and the River Axe created challenging Flood Risk issues which had to be resolved. Jubb developed an innovative “environmentally positive” flood risk strategy which was enthusiastically supported by the Environment Agency securing planning permission for the whole development.
Following the outline works reserved matters for the residential Housing, Tesco Store, Visitor Centre and Hotel site have been supported by subsequent reporting and assessment.
Jubb, as part of the project team appointed by Bristol City Council, have been commissioned to provide multi-disciplinary services to support the redevelopment of the Bristol City Council’s Romney House Office site to provide up to 268 residential dwellings in a high quality development which is currently subject of a live planning application due for determination in June 2018.
Town Centre redevelopment of industrial brownfield land allocated in the Bath and North East Somerset Local Plan for residential and mixed use purposes. The scheme was comprised of new highways and public realm, residential units and a number of mixed use buildings, set within the existing town centre.
The main features of the proposals were a strengthened town centre core, focused upon the existing public realm and historic core of The Street, the southern side of Wells Road, Fortescue Road and the Frome Road with a mix of uses including retail, commercial and residential uses together with associated works to improve the public realm.
The residential development came forward in phases with the northern end of the site being higher density and mixed use in character with a progression towards the southern end of the site of medium / low density development and a mixture of open space, residential uses that reflect the rural character of the town.
Jubb provided engineering led planning support to the wider masterplan evolution before undertaking full engineering design of the enabling infrastructure and three separate phases of residential and mixed use development totalling some 200 units.
The Bath Quays Waterside Project is an essential flood mitigation and flood defence project, including works to the north and south banks of the river between Churchill Bridge and Midland Bridge to address the negative impacts of climate change.
The works will reduce existing and future flood risk to the Lower Bristol Road and over 100 residential and commercial properties on the South side of the river through the provision of new flood defences and furthermore provide the flood mitigation to enable the redevelopment of the Bath Quays and Manvers Street development sites in order to realise the Council’s ‘Bath Quays’ project and deliver new jobs and homes.
In light of the Coronavirus pandemic, our business resilience planning is now being implemented. Whilst we have not closed our offices at this time, we have empowered all staff to work remotely should they choose to do so, and our business infrastructure is fully enabled to seamlessly support the transition to this style of working. Additionally, Government advice may shortly dictate the need for us to make the closure of offices compulsory in the interests of safeguarding wider public health.
We continue to be fully operational but these measures are likely to produce a change to our working patterns.
You may therefore find that you have difficulty reaching us by our main office and direct dial landline telephone numbers but all staff can be still contacted by email, mobile numbers and Microsoft Teams.
For our formal Action Plan and Risk Assessment click COVID-19 Action Plan Risk Assessment_26 March 2020