CIVIL & STRUCTURALENGINEERING

calfordseaden is an award-winning construction and property consultancy. Our comprehensive range of services cover chartered building and quantity surveying, project management, architecture, civil and structural engineering, mechanical and electrical engineering, sustainability and health and safety. Through our complementary and mutually supportive competencies, we provide our clients with a truly multi-disciplinary service through our six offices.

Our Civil and Structural Engineering team have been appointed to a variety of projects across a wide range of sectors, ranging from single buildings to multi-million pound urban regeneration schemes. We recognise the value of close working relationships and provide a full range of professional services tailored to meet our clients’ needs and requirements. Our portfolio of projects includes work in the public and private sectors, including offices, factories, distribution centres, hospitals, schools, social and private housing and other building projects.

calfordseaden has extensive experience in traditional construction, but is also a leading authority in the design and use of modern methods of construction, sustainable design and construction, and renewable technologies. Our experience and constantly evolving expertise means we anticipate the needs of our clients and provide them with the best and latest solutions and perspectives. We seek to provide value for money for our clients and pursue a flexible and innovative approach to the challenges we encounter on their behalf.

ABOUT US

Architecture BIM BuildingSurveying

Civil & StructuralEngineering

Clerk of Works Employer's Agent

Health & Safety Risk Management

M&E Engineering

Project Management

Quantity Surveying Rights of Light & Party Wall

Sustainability

Regional Distribution Centre, Northfleet

Retail

ClientPrivate

Duration2009-2014

ValueConfidential

ServicesArchitectureStructural and Civil Engineering

Contract JCT 98 WCD

FundingPrivate

This project involved provision of design services for a 41,250m² regional distribution centre. calfordseaden was initially appointed to provide architectural and structural engineering services for the detailed design of Phase 1 of Lidl’s proposed new retail distribution centre in Northfleet. We were subsequently appointed to Phase 2, for provision of redesign and analysis services for the warehouse and office spaces to suit the changing operational needs of the company.

Towards the end of Phase 1 the client identified a requirement for an auditorium facility. We examined the viability of incorporating a 120 seat auditorium into the scheme and, following the client’s decision to progress this, very promptly designed the facility, including sight-lines, acoustics and materials to form a high quality conference facility.

Phase 2 of the project was effectively a continuation of Phase 1, with the required changes and adaptations incorporated into the Phase 1 scheme drawings, to facilitate the Lidl Operation team’s changing requirements.

The external works including earthworks, drainage, contaminated ground issues, attenuation tanks for surface water and pumps on both surface water and foul. Approximately 50,000m² hard standing and on site roadways/car parks were also included in the development.

One of the unique aspects of this site is the garden that has been provided for the staff. The calfordseaden team coordinated the hard and soft landscaping for the garden and provided various options for the garden furniture.

Following the successful planning consent the calfordseaden team maintained a continuous daily input into the project and weekly presence on site. We have acted as design co-ordinator throughout, ensuring compliance with appropriate codes and regulations and liaising with the very many specialists required to complete a project of this size and complexity.

£55M North West Cambridge Development

Mixed Use & Regeneration

ClientUniversity of Cambridge

Duration2014-2017

ServicesNEC Supervisor for Site Wide Infrastructure

Contract NEC3

Sustainability Code Level 5BREEAM ‘Excellent’

Main image Courtesy of Mecanoo

This major development creates a new district for Cambridge, developing 150 hectares of former farmland to provide accommodation for University and College staff, Post Graduates and private homes for sale. Supporting facilities for the new community are also being provided including a three form of entry primary school, community centre, doctors surgery, supermarket, hotel, senior living homes and sports pitches. The entire development is set in an idealic landscape inclusive of parkland and lakes.

calfordseaden has been appointed as NEC Supervisor for the SWIC works which include significant reprofiling of the existing land and the construction of site roads, foul and surface water drainage, utilities installation and hard and soft landscaping for the whole development. The works are designed to be environmentally sustainable, with the surface water collected and partially reused for toilet flushing and plant irrigation or drained to the lakes. The main buildings are heated by a district heating system serviced by an on-site energy centre. The highway works include new road junctions with two of the main feeder roads to Cambridge town centre.

calfordseaden’s team includes two full-time NEC Supervisors, who inspect and monitor the work on site, supported by additional staff from the main office. Duties include inspection of road, drainage, utilities, earthworks and landscape construction, including witnessing tests on materials and workmanship and site safety. The inspection and witnessing is co-ordinated with the Contractor’s Inspection and Test Plans and Method Statements. Inspection includes review of material quality certificates for compliance and with the Works Information. Reporting is provided by means of weekly and monthly reports to the client and project manager.

£90M Hale Village, Tottenham

Mixed Use & Regeneration

ClientNewlon Housing Trust

Duration2006-2014

ServicesCDMCEmployer’s Agent M&E Engineer Structural Engineer

Contract JCT 98PPC 2000JCT 05

FundingHCA

Sustainability Code Level 4BREEAM ‘Very Good’

Hale Village is a major regeneration scheme developed by Lea Valley Estates, with Building Design Partnership leading the master planning. The five hectare brownfield site is located between the River Lea and the London to Cambridge railway line, immediately adjacent to Tottenham Hale Station.

The riverside development which is modelled on Hammarby, a waterside district of Sweden’s capital Stockholm, opens up a vibrant waterfront area to provide new, high quality affordable and private sale housing as well as commercial and retail floor space.

In total, the regeneration provides 542 new affordable homes to Code Level 4 standard, together with new private housing, a shopping street and 3,900m² of office accommodation for our Client to BREEAM ‘Very Good’ standards. The properties are of mixed tenure including general needs and shared ownership flats across five blocks ranging from eight to 11 storeys.

Each phased element of the Hale Village redevelopment has been designed to a very high specification. Many of the new homes have their own balconies and each block features communal space such as roof gardens and courtyards. The overall development also incorporates areas of green space for residents as well as retail and leisure facilities. A combined heat and power plant has also been installed to help provide sustainable energy.

In order to maximise the sustainability of the project and in addition to the district heating system, low energy lighting was used throughout the building and a sedum roof was installed. Further to this, heat recovery ventilation was used within the dwellings, helping to ensure all dwellings achieved Code Level 4 without excessively increasing cost.

Awards: Housing Innovation Awards ‘Most Innovative Affordable Housing Scheme 2014’, Inside Housing’s ‘Top 50 Developments 2014’, shortlisted in the ‘National Housing Awards Best Regeneration Project 2013’, First Time Buyer Magazine Readers’ Awards ‘Best Social Integration Project of the Year 2013’, shortlisted in First Time Buyer Magazine Readers’ Awards ‘Best Urban Regeneration Project 2013’.

calfordseaden has been appointed on this scheme to provide structural engineering design services on behalf of Bellway Homes. The scheme, known as ‘St. Clements Lakes’ will provide 156 residential units comprising of 50 houses and 106 flats across five blocks up to 5 storeys in height for affordable rent and for sale.

The units will be constructed using mainly loadbearing masonry with precast concrete floors; two blocks will consist of an RC frame up to the first floor podium level and structural steelwork will be used for balconies and roof structures on some blocks.

In addition to the residential units, the scheme will also provide one commercial unit as part of the phase 2 element of the site. The scheme will also utilise sustainable technologies with the installation of PV panels.

calfordseaden is responsible for the design of the piled foundations and superstructure. Challenges included addressing issues associated with building in a partially filled chalk quarry and adapting the design part way through to allow a different form of construction for the superstructure to be employed on the flats.

ClientBellway Homes

Duration2015-2018

ServicesStructural Engineer

Contract Design & Build

FundingPrivate

£23M St Clements Lakes, Greenhithe, Kent

Residential

£2M 45 Pont Street, Knightsbridge

Commercial

ClientCadogan Estates Limited

Duration2011 - 2014

ServicesArchitectBuilding SurveyorM&E Engineer Structural Engineer

Contract JCT

Funding Private

Sustainability BREEAM ‘Very Good’

calfordseaden was involved in the conversion of the accommodation within this late Victorian Grade II Listed building from a single tenancy office into ‘serviced offices’.

The key to the success of this project, which was self-funded by the client, was the decision by Cadogan Estates to convert this property whilst working closely with an experienced operator. By matching the needs of the end user to the existing building this minimised the amount of alteration work required.

The existing services had been installed in the mid 1970’s when the building was converted to office use. These services had been extensively adapted over the years by the tenant, with much being surface run. All the services needed replacing and upgrading to modern standards.

The building had been built to a very high standard. The main challenge for the design team and the greatest achievement was the integration of the new service routes into the building which removed unsightly surface wiring and Cat 6 data cables. We also installed comfort cooling and replaced all of the existing Mechanical and Electrical services.

For the repairs to the existing fabric calfordseaden worked closely with the Historic Building consultant at Donald Insall and the Conservation officer at the Royal Borough of Kensington to determine the most appropriate techniques. For example, our approach to cleaning the brickwork included carrying out sample cleans on small sections to determine the most suitable technique. Based on this assessment a decision was then made as to what, if any, remedial works were appropriate.

£11M Croydon Road, Caterham

Mixed Use

ClientBeamridge Construction

Duration2017 - Ongoing

ServicesArchitecture, Civil & Structural Engineering

calfordseaden is providing Architecture and Civil and Structural Engineering services for this mixed use scheme which comprises the design and construction of 49 mixed tenure apartments and a supermarket store of 2000m² plus in Caterham.

The site was introduced to calfordseaden at post planning stage by a contractor who was looking for an affordable housing partner to take on the building contract and acquisition of the whole site, including the commercial elements. we introduced the land and build opportunity as a package to a registered housing provider.

The introduction of both the registered provider and the supermarket retail company enabled the package offer to work with the vendor. calfordseaden committed significant resource to work on risk registers and due diligence to mitigate risks before our client entered into land acquisition and build contracts.

We faced a challenge of a non-viable underground multi-storey car park & main sewer within the building footprint, requiring the reconfiguration of the car park and ground floor layouts.

Significant time pressures were in place that required intensive investigations to mitigate risk under the build contract and for the appropriate land sale price to be agreed. These investigations were actioned by calfordseaden’s multidisciplinary resources under the direction of the Employers Agents, and that included Structural (to assess ground conditions, remediation and basement car park size and levels constraints & major drainage diversions), M&E (to establish substation loadings & sustainability viability) and Architecture (to develop the designs in further detail to remove discrepant information in the planning approved drawings) and thus ensure that at contract stage there was absolute certainty that the project at the agreed contract sum and with the agreed land value was deliverable as desired by the registered provider and contractor.

£6M Prendergast School, Lewisham

Education

ClientLakehouse

Duration2014-2015

ServicesArchitect Structural EngineerM&E Engineer BREEAM Assessor

Contract JCT D&B

FundingLocal Authority

Sustainability BREEAM ‘Very Good’

calfordseaden was appointed to provide a range of services utilising BIM for this Primary School project. This project was our first in-house full BIM coordinated school project. The scheme provides a two form of entry in the primary phase and is part of Lewisham’s strategy to accommodate ever growing pupil numbers.

The initial planning approval had already been granted for an existing 2D design. We worked collaboratively with the Contractor and project Stakeholders to produce a 3D model that incorporated a number of improvements over the original design, whilst remaining within the restrictions imposed. The model was shown to Clients during meetings which they found extremely beneficial in providing a greater understanding of the buildings appearance and suitability. The Structural, M&E and Architectural models were used to enable the production of robust tender information.

The building heights had already been set by the planning approved drawings; the stepped building and these heights gave us very limited ceiling service zones, therefore BIM helped us fully understand the implications and allowed us to creatively overcome the problems before getting to site. BIM also helped our team and Client identify constraints, opportunities and solutions to be explored.

An internal ‘heart space’ forms the hub of the school with its split levels in order to address the sites topography; the full height nature of the atrium provides many challenges with regards to servicing. With the use of BIM however, we were able to address these issues by introducing service runs through the split levels, the atrium zone and the adjoining hall.

BIM also helped us to identify any clashes between the structure, the fabric and services of the new build which we were able to resolve before construction began. The school uses our data rich model as live O&M manuals.

£40M Rifle Street, Poplar, London

Residential

ClientBellway Homes

Duration2015-2017

Value£40M

ServicesCivil & Structural Engineering

Contract Bellway Bespoke Contract

FundingPrivate

calfordseaden carried out a due diligence review of the available data for this large development located within a Flood Zone. Issues highlighted included the Docklands Light Railway which adjoins the site, the associated risks for cranage, and issues with drainage capacity.

calfordseaden was subsequently appointed to provide Civil and Structural Engineering services and is responsible for designing the piled foundations, substructure, rc framed superstructure, adoptable road and SuDS drainage.

The site, which is bounded by public highways and the Docklands Light Railway, will provide 254 mixed tenure residential units across three reinforced concrete blocks varying in height from four to twelve storeys with undercroft parking. The site will consist of houses and flats of which 52 will be for affordable rent, 28 for shared ownership and 174 for private sale.

Block 1 will be a U shaped building, with a podium area and green space for residents at first floor and car parking for 20 cars. Block 2 will consist of ten to twelve storeys running parallel to the DLR, with a private road running between the blocks.

The sites location provided a complication with respect to clearing conditions prior to demolition and construction; the production of additional documents was necessary to obtain approval from the rail company.

A large storm water attenuation tank was required for the site as there was restricted flow of only 5I/s allowed into the public sewer; the attenuation was located under the car park surface. The public sewers outside the site have the capacity to take the full foul and surface water flows, but the limited depth of the existing drains to the north of the site meant that all drainage had to be connected to the public sewer to the south, necessitating a complex solution.

The design and draughting has been undertaken using full 3D software and BIM.

The scheme will also include sustainable technologies including PV panels and a green roof.

£7M Castle House, Marefair, Northampton

Residential

ClientFrancis Terry & AssociatesNorthampton County Council

Duration2015-2018

ServicesArchitect Structural EngineerPrincipal Designer

Contract Traditional JCT

FundingLocal Authority

Sustainability Code Level 4

calfordseaden is working collaboratively with Francis Terry & Associates to provide architectural, structural & principal designer services for the design of a neo-classical style residential project on the site of a disused office block. The project is being delivered to BIM Level 2 with 3D models created using Revit by all disciplines. Clash detection is also part of the coordination process.

The design comprises of 26 new ‘for sale’ homes over 4 floors including 20 flats, 6 town houses, a café and a shop in a style that reflects the existing traditional buildings of Northampton Town. Whilst being on an important pedestrian route into the town centre and opposite to an outstanding heritage Anglican Church, the design incorporates both traditional and grand features. The design develops a traditional appearance whilst the accommodation forms a more contemporary feel, with innovative technological features to suit the lifestyle expectations of potential residents.

The construction of the build uses traditional materials such as natural stonework, handmade bricks and slate roof tiling. Sustainable technologies are also being used such as solar panels and lime mortar.

As principal designer, calfordseaden had a positive input on the overall design of the scheme, changing a number of external features of the original design to accommodate safe maintenance or reduced maintenance requirements, in particular the drainage/guttering systems and the inclusion of low level roof mansafe systems for PV panel installation and maintenance. Francis Terry has stated that this is the first of his designs to have had substantial changes to the overall design due to health and safety requirements.

OFFICE LOCATIONS King’s Head House King’s Head Yard Borough High Street London SE1 1NAT 020 7940 3200E london@calfordseaden.com

Stewart Court 214a Hagley Road Edgbaston Birmingham B16 9PHT 0121 454 1688E birmingham@calfordseaden.com

20 Station Road Cambridge CB1 2JDT 01223 653 177 E cambridge@calfordseaden.com

St John’s House 1a Knoll Rise Orpington Kent BR6 0JXT 01689 888222E orpington@calfordseaden.com

The Maltings Locks Hill Rochford Southend-on-Sea Essex SS4 1BBT 01702 548449E southend@calfordseaden.com

Calford House Wessex Business Park Wessex Way Colden Common Winchester S021 1WPT 01962 718300E winchester@calfordseaden.com

calfordseaden LLP is a Limited Liability Partnership Registered in England and Wales number OC315838Registered Office: Devonshire House, 60 Goswell Road, London EC1M 7AD where a list of members is kept

www.calfordseaden.com