Wentworth House Partnership Capability overview 2023/24
Wentworth House Partnership is the civil and structural engineering consultant within Keltbray
Our purpose is to redefine the way sustainable development is delivered. Based on our collective experience, we collaborate at the earliest stage to design and self-deliver innovative customer solutions across technically demanding built environment and infrastructure sectors. Working in partnership with our stakeholders, we are actively contributing to economic growth, social advancement and environmental protection.
Executive Summary
Introduction
Wentworth House Partnership are a wellestablished and award winning specialist design consultancy, formed in 1999. With a track record for our imagination, initiative and high level of technical expertise, we are now recognised as one of the leading temporary works and geotechnical design consultancies in the UK.
Health & Safety is a priority in all of our designs, and our philosophy is to cooperate with the Principal Designer and all other project stakeholders and produce method statements and risk assessments for all major works, ensuring the health and safety of both site personnel and the public.
In order to provide the best possible service to our clients, WHP offers a flexible design package to suit individual requirements. We work closely with all parties to provide a personal service and fully understand their needs to achieve a satisfactory design outcome within the agreed programme. With our contractor-based mindset, we are focused on constructability, timely delivery and providing the best value for our clients.
Our experience covers all areas of temporary works, refurbishment and foundations in the building and civil engineering sectors in commercial, residential and industrial buildings, including: cofferdams and deep basements, headings, needling, shoring, façade and party wall supports in busy city centres across the country. We also have wide experience of working with Grade I and II listed buildings.
Sustainability is one of our prime considerations, and as part of our commitment to reducing embodied carbon we are one of the first temporary works consultancies to commit to specifying low carbon concrete. We have also led research to validate suitability of low carbon concrete, in collaboration with Keltbray Group with applications such as HIPER® Pile.
Key People
Group Executive director
Craig Moorfield
BEng (Hons), MIE (Aust)
Specialist engineering services are core to Keltbray’s strategy; in his role as Executive Director, Craig leads the Groups performance in engineering, research and development, and sustainable design. Craig has Board-level responsibility for WHP, setting and managing strategic objectives.
Craig was previously Head of Engineering for Multiplex Europe and brings a wealth of knowledge and experience gained from working across Keltbray’s core Built Environment and Infrastructure markets. He has led the development of cutting-edge construction methodologies and analysis techniques on some of the world’s most high-profile projects.
Managing director
Stuart Vaughan
MEng CEng FICE MIStructE
Managing Director of WHP, Stuart's passionate about delivering efficient design solutions to client projects through a focus on working to provide optimum buildable and safe quality solutions, saving clients time and money.
Proficient in a wide range of construction engineering solutions from façade retention, building stability and basement construction temporary works through to efficient permanent works solutions, Stuart has 12 years main contractor experience delivering coordinated engineering solutions across a range of packages. Member/contributor of CIRIA committees.
Director of Strategic Engineering
Tim Lohmann
BEng CEng FICE FIStructE
Tim has nearly 30 years’ experience in delivering and designing temporary works schemes, primarily in complex city centre environments. He started in construction with O’Rourke in the late 1980s and left after 15 years with them in a variety of engineering led roles. He has subsequently worked with an architectural precast supplier, and London based concrete frame contractor. More recently he established and ran a successful temporary works design business before leaving to join Wentworth House in 2015. He has experience of a wide range of demolition and construction techniques.
Associate of WHP
Vasileios Papastathis
MEng MSc DIC CEng MICE
Vasileios joined Wentworth House Partnership in 2014 as a Graduate Engineer and has since gained extensive experience in geotechnical and structural design, involving both temporary and permanent works schemes. He has also worked as a Project Engineer for Keltbray Piling, supervising the processes associated with various piling construction techniques and gaining invaluable experience in project management and quality assurance.
Vasileios is an Associate at WHP, leading design teams of Engineers and Technicians in the Esher office. Over the years, he has developed efficient structural and geotechnical design solutions and undertaken complex impact assessments of existing assets for major infrastructure projects, including Thames Tideway Tunnel East and HS2 Area North.
Associate of WHP
David Kwong
MEng CEng MICE
David, Associate at Wentworth House Partnership, joined in 2011 as a Graduate Engineer. Throughout his tenure, he has gained diverse experience in temporary works and geotechnical design, working with both consultants and contractors on technically challenging projects. He also has expertise in pile designs and various piling construction techniques, acquired during his time at Keltbray Piling.
David's commitment to safety and quality is evident in all his roles, where he has been involved in numerous demolitions, façade retention, cut and carve, deep basement, and piling projects in busy city centres.
Principal Engineer Egle Reid
CEng MICE
Egle is a Principal engineer at Wentworth House Partnership and leads our team based in Leeds. Egle started her temporary works carrier 10 years ago and had worked in numerous projects in UK and Europe. Throughout the years, Egle worked on various sectors including residential, commercial, defence, energy, highways, railway, London underground and complex demolition among others.
Technical Director Tomasz Mochol
MSc CEng MICE Eur Ing
Tomasz started his career working in consultancies in Poland on reinforced concrete and steel structure design and with a contractor on glulam design. On joining Wentworth House Partnership in 2006, he quickly adapted to UK codes and the specialities of temporary works design, and is now an accomplished designer with a broad range of temporary works design experience which he uses to good advantage on his client’s projects.
Associate of WHP
Surinder Mann
MEng CEng FICE MIStructE
Surinder has led teams in structural design in the UK and US in the onshore and offshore sectors. More recently he has been responsible for the temporary works design in major buildings in the UK. He has extensive experience with onsite coordination and delivery of those projects.
Surinder offers a command of the requirements of demanding projects with tight deadlines and the coordination of the multiple and diverse parties involved in the construction process.
Noteworthy projects include Miller Park baseball stadium permanent works design in Milwaukee and HS2 temporary works design.
Associate of WHP
Kostas Leontaridis
CEng MICE
Kostas has an MEng and an MSc from the Aristotle University in Greece and is Chartered with ICE since 2019. He has worked as a geotechnical engineer in Greece for nine years, until he joined WHP in 2017 as a Senior Engineer in Temporary Works, carrying out structural and geotechnical design, managing projects and leading teams of Engineers and Technicians.
His main areas of expertise include retaining structures and propping, deep excavations, slope stability and damage assessment of underground assets.
Associate of WHP
Theodore Litsos
MEng MSc DIC CEng MICE
Theodore is a Principal Civil Engineer experienced in the design and assessment of infrastructure projects in the UK. He is the team leader of our Bristol office, responsible for business development in South West and the wider UK infrastructure market.
He has also successfully managed multidisciplinary projects on HS2 Enabling Works and Bristol Metrobus. More recently, he leads the temporary works design on the A30 Chiverton to Carland Cross project and provides temporary works support to our clients in Hinkley Point C.
Principal Engineer
Dylan O'Reilly
CEng MICE
Dylan joined Wentworth House Partnership in 2019 and leads our team of engineers and technicians based in Glasgow, central Scotland. With eight years working in site-based contractor roles, acting in Temporary Works Supervisor/Coordinator roles as well as Appointed Person for Lifting Operations for the duration of his career, Dylan has an in-depth knowledge of the engineering and delivery of reinforced concrete structures, including in situ, precast and post-tensioned, and the associated construction methodologies employed.
Lead Technician
Michael Allen
EngTech MICE
Michael is an experienced CAD and Tekla Technician. Primarily working in both steel and reinforced concrete (RC) detailing, he has worked on a variety of projects including RC retaining walls & stairs, precast service trench lids, various sized façade retention systems and steel frames as well as one off bespoke steel frame solutions.
Michael has a strong focus on supporting the CAD team and overseeing the development of all apprentices within the CAD team allowing for the next generation of technicians/engineers to build their full potential.
Capability
WHP provide a full range of civil, structural and geotechnical design services for a national and international client base, on projects fees ranging from
Basement and foundation engineering
Geotechnical engineering
Infrastructure and industrial
Structural alteration
Geotechnical Engineering
INTRODUCTION:
WHP has a team of experienced and highly competent geotechnical engineers raging from Graduates to PhD qualified engineers. We have experience and capability to tackle the full range of geotechnical challenges faced by developers and contractors. Due to our capability we have worked for developer clients at the early stages of projects to determine viability and preliminary solutions all the way through to provided fully detailed construction issue design solutions for implementation. Being a contractor focused consultancy we develop efficient and appropriate solutions, identifying the inherent risks and uncertainty of geotechnics and working with the client team to best manage these.
Our range of capabilities includes:
– Ground movement assessments and potential damage assessments including Network Rail and TfL assets
– Finite element analysis and design of geotechnical solutions – 2D and 3D
– Piled wall analysis and design
– Piled foundation design including group settlement analysis
– Raft and pad foundation design
– Basement retaining wall and propping design with various wall types
– Assessment of impact of loading and excavation on adjacent services
– Basement heave assessments
– Jet grouting design and impact assessment on underground structures
– Embankments and cuttings including soil nails and geogrid
– River/dock wall stability assessments
– Platform assessments
SCOPE:
– Slope stability
– Bearing piles
– Retaining walls
– Ground movement assessment
– Potential Damage assessment
– Finite element analysis
– Working Platform design and assessment
PROJECTS:
– Earls Court
– Silvertown Quays
– HS2 Euston
Thames Tideway – A30
– Heads of the Valley
– The Stage, Shoreditch
UCL Institute of Neurology
56 Bishops Avenue
Nova East
Silvertown Quays
Case study
Summary
A new development residential development is designed in the Silvertown Quays, where part of the royal Victoria Docks will be reclaimed. Wentworth House have been supporting the project from the beginning:
– Concept Stage 2 designing of the new required dock walls: a temporary, cut-off wall to enable the dewatering of the docks, and a permanent retaining wall that will contain the new infill in the reclaimed area
– Enabling works design: Site excavations, hoardings, platforms, stockpiles, assessment of assets, etc
– Infill design: Aiming to be consisted primarily by site-won materials, WHP has specified required testing, assessed the results and designed an 8m high infill to achieve very tight settlement requirements.
– Existing dock walls assessment: The stability of the historical dock walls on Site would be compromised during the dewatering stage. WHP carried out the stability assessment and designed mitigation measures to ensure that the existing walls wouldn’t fail
– Ground Movement Assessment / Potential Damage Assessment: A number of services were installed on Site already. WHP performed a ground movement and potential damage assessment by building a 3D model and adopting measures to ensure the assets would not be damaged during the works
Salisbury Square
Case study
Summary
Salisbury Square was one of the largest and most complex basement excavations carried out in Central London. The site was bounded by adjacent building plus a listed building together with highways packed with services. The excavation was over 18.5m deep from street level across a site that sloped by 4.5m from one end to the other. The basement propping also needed to deal with supporting a listed building on the site that required a new foundation and major structural remodelling internally.
The basement propping was in multiple stages:
– Stage 1 basement propping to enable the demolition of the existing ground floor structure
– Stage 1 a propping to allow access from the piling rig at multiple levels to install the perimeter secant pile wall
– Stage 2 propping to allow excavation and construction of the capping beam. Due to site conditions and requirements the capping beam required an excavation of upto 10m below ground level. This was achieved through a mixture of cantilever kingposts, propped kingposts and local cofferdams
– Long term deep basement propping using the capping beam as a waling and another level of propping below. The propping positions and levels were arranged to allow effective excavation with large plant, piling from formation level for geothermal boreholes and subsequent construction of the slipformed cores
All of the above were developed and designed allowing the contractor to excavate and build out successfully ahead of project programme.
Basement and Foundation Engineering
INTRODUCTION:
WHP has extensive experience in the design of basements and propping solutions. This ranges from ground movement assessments and potential damage assessments affecting adjacent properties or assets through the design of alternative retaining wall solutions; D-wall, secant, contiguous or sheet piling to the detailed design of propping solutions to optimise the whole basement solution.
Through the use of appropriate software including 3D finite element analysis we are able to deliver the optimum full integrated basement solution rather a piling that makes the propping solution onerous or vice versa.
We understand the challenges of excavation and construction and coordinate our basement design with logistics platforms and crane bases etc together with ensuring that the location and sequence of prop installation and removal enables and efficient build-out sequence.
SCOPE:
– Blue sky and top-down options
– Piled wall design
– Basement propping
– Plunge columns and permanent works
PROJECTS:
– 100 Bishopsgate
– Salisbury Square
– 2 Aldermanbury Square
– London Wall Place
– Institute of Neurology
– 56 Bishops Ave
– London Wall Place
Infrastructure and Industrial
INTRODUCTION:
WHP has extensive experience in a range of infrastructure projects including Crossrail, Thameslink, HS2, Hinkley C, A1 and A30 and well as onland energy distribution into the grid. We combine our civil/ structural engineering with our geotechnical engineering capability to deliver innovative solutions to challenging problems. Particular examples of works undertaken include:
– Offsite construction and lifting in place of concrete-steel composite bridges
– Large BEBO arch structures
– Underpass culverts including large excavations and open cut
– Soil nail retaining walls adjacent to live carriageway to facilitate construction of structures and utilities diversion
– RC internal bridges
– Demolition of existing RC bridges
– Reinforcement stability during construction
– Independent checks of steel liner rings and domes during lifting and landing phase (see photo)
SCOPE:
– Temporary stability assessment
– Retention of heritage structures
– Construction methodology
– Inventive construction sequences
– Marine works
– Network Rail works
– Bridge removal and construction
– Geotechnical assessment
– Blow down demolition design & assessments
– Complex formwork design
– 3rd party asset assessments
– Energy battery sites –structural design
– Reinforcement stability of prefabricated rebar cages to accelerate construction of the various buildings in the Nuclear Island
– Complex bespoke formworks items for the tunnel construction as part of the Marine works
– Overall site earthworks design
– Foundation design for Megapacks units, transformers, control rooms and switch rooms
– Design of steel structures for electrical equipment (Disconnectors, Circuit Breakers, metering current transformers etc.)
PROJECTS:
– Ferrybridge Power Station demolition – London Bridge Thameslink
– Wycliffe wind turbine recovery
– Fawley Deinvestment and stabilisation
– Hinkley C
– Thames Tideway
– Crossrail
– HS2
– M621
– A1 – Tesla Bumpers
Case study Ferrybridge Power Station
Summary
Ferrybridge C Power station is in West Yorkshire and it commission began in 1966. However due to the new requirements and legislations it was decided to close the plant. Keltbray was hired to act as principal contractor in demolition works and WHP supported Keltbray with engineering solutions. Overall WHP provided designs and assessments for various structures like chimney demolition, ash bridge removal, turbine house, boiler house and many more.
One of interesting item to mention is barge unloader which was located immediately adjacent to the river Aire. As part of the wider plant demolition the barge unloader structure was to be demolished to grade level.
The standard demolition method for structures is top down, however due to its sensitive location a particular concern was the potential contamination of the adjacent river course and hence the methodology selected by the client was a sequential ‘jack-down’ approach to mitigate this risk. Therefore, that meant that the building had to be lifted using jacks, cut, lowered down and the process was repeated until most of the building was demolished.
In order to finalise the sequence and identify the safe method of works, WHP carried various calculations that included:
– Centre of gravity (CoG) calculations that allowed to justify the position of jacks
– Applications of wind in various directions to confirm the vertical and horizontal stability during demolition process
– Finate element (FE) analysis model that allowed to confirm barge unloader structural capacity at each stage of demolition and verify how the CoG changes in every cut
Due to effective collaboration between the design and site teams, the barge unloader was demolished successfully (pictures below in a FE model and real life).
K1 Knightsbridge Case study
Summary
The K1 Knightsbridge project is a mixed-use scheme across commercial, residential and retail areas. It also incorporates a new entrance to Knightsbridge London Underground Station on Brompton Road. WHP’s scope of works included the full façade retention scheme with the extensive underpinning to the existing foundation and all temporary works for the demolition phase carried out by Keltbray.
Due to highly variable façade, different solutions for the retention were used. One option consisted of the vertically cantilevering frames, which were supported by the concrete kentledge installed in the existing vaults. Second option used the horizontally spanning trusses, supported by the retaining tower erected inside the site and mentioned earlier vertical frames. Another option consisted of the frames supported by the kentledge installed directly on the pavement.
Additionally to the façade retention, WHP designed the basement propping for the existing structure. This consisted of the raking props and thrust blocks and partially used also existing basement slab.
As part of the new development there was need for lowering of the basement. This required extensive works related to the existing foundation for the façadedeep underpinning had to be designed for both temporary and permanent condition. Proper sequencing of the works took significant part in this process and the design of the deep access shafts required for the construction of the underpins was also a key consideration.
The challenges that WHP had to face during the design included heavily serviced pavements, constraints related to vicinity of TfL and LUL assets, including Knightsbridge Station, Piccadilly Line tunnels and ventilation shafts, and in general highly congested area. All these factors were thoroughly studied, coordinated with other parties involved in this project and the proper solutions were implemented.
Façade Retention
INTRODUCTION:
WHP is highly experienced in the scheming and detailed design of façade restraint schemes and we were co-authors of the CIRIA code of practice for retained façade design (C579). We have developed facade retention schemes for many city centre projects across the UK. We consider the existing structure, proposed works, surrounding infrastructure and services to develop the optimum solution. Often the façade restraint scheme is followed by a basement excavation and our expertise in both allows us to develop an integrated solution.
We have developed internal and external façade restraint schemes, where possibly utilising the existing structure. These have been founded on piled or ballasted foundations. In addition to retaining the facades we have dealt with vertical loading and have also fully vertically supported a retained façade to allow a new basement to be constructed 3 levels below.
In this instance the temporary works supported the façade in the air and prevented it from toppling over.
All of these schemes are developed with demolition and reconstruction activities in mind so temporary works are kept outside as much as possible and the existing structure is used to provide the temporary restraint where possible.
SCOPE:
– Listed facades
– Conservation areas
– Utilising existing structure
– Consideration of existing services
PROJECTS:
– W8 Regent St
– W4 Regent St
– W5 Regent St
– Palace St – K1 Knightsbridge – 8-10 Moorgate
– Tower Hamlets
– The Glebe
Structural Alteration – cut & carve
INTRODUCTION:
WHP is a leader in the development of structural remodelling projects and contributed to the CIRIA guide (C806) on remodelling buildings. By combining our understanding of structural behaviours and essentials with our construction methodology experience we are able to develop efficient and viable methodologies to make building adaptions and work with the design team to develop enhanced permanent works solutions. The range of activities are typically encapsulated by the following:
– Holistic assessment of all types of building structural systems or parts thereof in the existing condition and during proposed construction stages, using state-of-art analytical tools and methodologies.
– Design of complex retention and propping schemes for structural components, comprising facades, load bearing walls, roofs, floors, steel or reinforced concrete frames, basement and retaining structures
– Development of bespoke cut-and-carve demolition schemes enabling building reconfiguration and re-use projects.
– Value-engineering integrated review and proposal of amendments to permanent works design & detailing with the objective of optimising construction efficiency and minimising extent of required temporary works whilst maintaining client requirements.
– Evaluation, strengthening and retrofit of existing structures to client’s performance criteria by using customary or out-of-the-box novel techniques, including composite materials
SCOPE:
– Temporary stability of existing structures
– Interrogation of existing structure
– Utilising permanent works for temporary works
– Amend permanent works for suit methodology
PROJECTS:
– Devonshire Row
– Museum of London
– IBM Southbank
– Tower hamlets Hall
– Daniel House
Museum of London
Case study
Summary
Over the past years WHP is involved in extensive structural modifications of the General Market and Poultry Market buildings in Smithfield, London. The project envisages substantial reconfiguration of the historic market buildings into the New Museum of London. WHP has carried out assessments of the deteriorated existing structure, developed temporary works to enable the required repairs and installation of the new permanent elements and provided the detailed sequence of works required to implement the architectural design intent in the most effective way, within an existing structural fabric characterised by significant degradation and multiple phases of earlier modifications. The specific scope comprises:
– Masonry wall retention and floor back-propping schemes, to enable partial demolition of the old structure. Development of supporting schemes for listed façade stone elements and timber mansard roofs.
– Advanced assessment of jacked masonry arches for a variety of boundary and loading conditions during the construction phases.
– Complex needling and underpinning schemes to enable the creation of new architectural openings and the installation of steelwork and reinforced concrete elements.
– Design of connection details between new steel members and existing degraded wrought iron girders.
– Numerical analysis of existing and proposed concrete cores, aiming to identify critical stages, develop the required temporary bracing schemes and coordinate with the installation of the new structure.
– Bespoke jacking schemes to re-support existing historic steel columns onto new transfer elements and monitoring specifications.
– Global coordination of parallel temporary works schemes by numerous contractors, to ensure continuity of the load paths and mitigate risks arising from scope and sequencing gaps.
– Development of proposals to the client and the structural engineer, with the intent to minimise the extent of temporary works required and streamline the construction process.
334 Oxford Street
Case study
Summary
Having provided scheme design and technical support through the tender process, WHP were able to develop that work into the project at 334 Oxford Street. WHP provided our clients, Keltbray and Lendlease, with a full suite of some 40+ temporary works designs ranging from; the design of the perimeter hoarding and gate posts, piling platforms, sheet pile wall for extended basement dig, retained structure stability assessment, multi-stage secant piled wall excavation propping assessment, a 60m long steel gantry spanning over the Oxford Street pavement to carry a 4-story temporary site accommodation block, trimming and propping for partial demolition and slab assessments for construction traffic loading.
The scope included the design of the three tower crane foundations; one on a raised kingpost frame to enable the excavation around the crane area, one on the existing structure 5th floor, and one on top of the new RC core. The latter design fed into a detailed core stability assessment where some sub-cores were slip-formed and other jump-formed – rising at different rates.
WHP provided technical support to the client’s project teams to develop sequences of demolition, excavation and construction that would enable an ambitious programme whilst ensuring stability of all existing and new structures for all stages of construction.
Miscellaneous temporary works
INTRODUCTION:
WHP is experienced in working with contractor clients to develop solutions providing access for plant material and operatives around the project. These range from hoardings and working platforms to crane bases and logistics gantries. Whilst most crane bases will be reinforced concrete, we have designed bespoke grillages utilising the existing permanent works minimising the need for temporary works or core top grillages. We have extensive experience designing crane bases and gantries for basement projects, maintaining stability of the system during the subsequent excavation.
SCOPE:
– Development of construction methods/sequences
– Hoardings
– Gantries
– Crane bases - Ground bearing or Piled
– Crane Grillages
– Core top cranes
– Core stability assessments
– Temporary stability of reinforcement
– Floor capacity assessments and propping
PROJECTS:
– 334 Oxford Street
– 2 Aldermanbury Square
– Sailsbury Square
– 8 Bishopsgate
– Museum of London
– Thames Tideway
– HS2
Wentworth House Technical Services
Investigation and Testin
– Load Capacity Testing
– Anchor and Fixing tests
–
–
Lift Beam testing
Geotechnical testing
These activities are led by the need to inform – the purpose of the investigation is to increase the confidence and knowledge of the existing structural form. All too often investigations are not informed by the early definition of the required information. Our experienced investigation teams work with designers to understand the gaps in the existing information and to develop appropriate and targeted survey works.
Cutting edge scanning and measurement, including drone capability for dimensional surveys.
Intrusive and non-intrusive section investigation and scanning – GPR, rebar scanning, steel section identification.
Intrusive investigation – openingup and materials sampling, core drilling of structures, cold cutting of metallic elements. Recording of existing connections and details.
We can carry out investigations to post tensioned structures to identify any potential issues, such as corrosion or loss of pre-stress, that could compromise the structure’s safety and performance. These inspections can include location of tendons by nondestructive methods, such as ferroscanning, ground-penetrating radar and ultrasonic testing, followed by careful exposure of tendons / strands and anchorages to confirm current condition, and presence or otherwise of grout for bonded systems. We can assess the level of pre-stress in tensioned strand or bar, and then provide analysis to determine any potential reduction in capacity of the various elements. This allows us to take corrective action if necessary, ensuring the longevity and reliability of the structure.
Materials sampling –extracting properly dimensioned materials sample for laboratory testing and preserving these appropriately until testing. Dust sampling for assessment of cement/chloride/sulphate content of concrete structures.
WHTS can manage and carry out all these works, working alongside our clients, main contractors and designers to ensure all relevant parties are kept informed of progress and results. All findings are presented in a full and detailed report, along with photos, drawings, videos and laboratory results.
– GPR & Ferro scanning
– Crack detection
– Rebound Hammer Tests
– Borescope inspections
– Moisture content surveys
– Carbonation and PH testing –
Half Cell Potential testing –for corrosion
Structural testing forms a key part of our industry. WHTS can implement full and partial testing to determine the behaviour of structures and structural elements. We can test to determine loading at a serviceability level or take an element to failure to inform the behaviour of the remaining structure.
Including:
– Load Capacity testing
– Anchor and fixing testing
Lift beam testing – Geotechnical testing
Structural Repair and Strengthening
We have an established team of specialists who work with the leading materials suppliers to provide innovative design led solutions to damaged or deficient structures. This can include external or internal strengthening with fibre reinforced polymers (FRP) or metallic materials along with associated enhancement to durability. We have a strong history of completing complex strengthening tasks in awkward and critical environments.
Our knowledge and understanding of post tensioned structures can assist in the formation of new penetrations through PT elements, via the provision of remedial epoxy anchorages prior to element cutting. This operation is often undertaken in conjunction with CFRP / punching shear strengthening due to changes in the structural performance of the element after formation of the penetration.
WHTS can assist in assessment, design and installation of strengthening solutions to cater for:
– Increased loads due to change of use / additional structure
– New penetrations through existing slabs e.g. lifts, stairs, escalators
– Structural alterations, e.g. installation of penetrations
Structural Repair and Strengthening
WHTS will also provide specialist hydraulic services for pre-loading and load transfer applications such as bridge jacking, stressing of crane grillages, temporary works preloading, flat-jacking / load transfer between old and new structures. In all of these applications we provide full as-built records of loads and movements linked back to calibration records.
We can assist with:
– Jacking solutions with synchronously controlled lifting and associated displacement monitoring
– Preloading to temporary works for load transfer
– Flat jacks for temporary or permanent loading (direct inflation or transfusion)
– Bar/strand stressing
– Bolt tensioning / torque loading
– Bespoke lifting/lowering solutions
Resources
£500 to £1m+
Temporary and permanent works design
Our engineering team, with hands-on guidance from our managing directors, includes students on year-long industrial placements and undergraduate apprentices, through to the senior team of associates and technical directors.
We have an established graduate apprenticeship programme, where school leavers join the business and we support them through day-release University courses in Civil Engineering. The students bolster their University learning with on-the-job experience and gain accredited degrees, ready to progress toward chartership with professional institutions. WHP has an established & successful training programme for The Institution of Civil Engineers and Institution of Structural Engineers, and mentoring of staff to chartership in one or both bodies.
The engineers design output is supported by our team of technicians who produce the design deliverables using BIM or 2D & 3D modelling as appropriate.
Wentworth House Partnership employs over 70 staff from five regional offices:
– Esher (Head Office)
– Farringdon (London)
– Bristol (South West)
– Leeds (North England)
– Glasgow (Scotland)
Our workforce is more than 20% female
We are multinational, with more than fifteen nationalities forming our workforce.
Tender support to main and subcontractors
Category 3 independent checking
Highways and railways asset protection
WHP utilise a wide range of software packages, giving us the appropriate tools for the tasks being undertaken
We have a commitment to support the construction industry, including authoring CIRIA Guides, participation/ leading the Temporary Works Forum, preparation of British Standards, sitting on ICE editorial panels and judging for BCI & Ground Engineering awards
