Bingley Station Roof Refurbishment

Buildings & Structures, Civil Engineering, Multi-disciplinary

Brief Description

The project is located at Bingley Station which is a Grade II listed structure and situated within a conservation area. The client scope required the delivery of a cost-effective refurbishment of the station building and canopy to provide a fully functional station with the potential to generate income through lease opportunities to local businesses. Prior to undertaking any works, Listed Building Consent was applied for and secured.

Scope

The client scope required the delivery of a cost-effective refurbishment of the station building and canopy to provide a fully functional station with the potential to generate income through lease opportunities to local businesses.

The primary output requirements were to reduce future repair costs and mitigate any health and safety issues.

Widespread defects to the external elements of the main station building had led to water ingress within and rising damp had also been identified. This had caused both dry rot fungus to be present, wet rot failures and water damage.

Many internal timber elements of the building fabric needed to be replaced and those which remained had to be treated with fungicidal agents. The aim of the project was to repair the existing roof and ensure a 25-year asset life.

Network Rail undertook initial liaison with the conservation team at the City of Bradford Metropolitan District Council, and CML as the Principal Contractor ensured that all methods and materials were approved before construction commenced.

The agreed works specific to the canopy were: –

All platform canopies to be cleared of vegetation and repaired where required. Ill-fitting hoppers and down pipes to be replaced with new from the Alumasc Heritage range. Twinfix multilink hatches and panels to be installed throughout the canopy as identified.

 

 

Solution

The majority of the works were to address rotten timbers forming in the roof trusses caused by water penetrating the failed roof coverings and box gutters. The location of some of repairs made it necessary to take into consideration train stabling arrangements for areas running transverse to the running lines.

Interfaces with the public was carefully considered in the planning of the works, as the station had to remain fully operational throughout.

Mobilisation

A mobilisation period was required for this scheme, however as the pre-construction planning phase had seen effective communications established between ourselves and the stakeholders the mobilisation activities were undertaken in a timely manner and the site was mobilised within a week.

Due to the nature of the project, significant temporary works were required to establish a fully mobilised access to the roof of the station building. This took 5 weeks to set up with other works being undertaken concurrently in line with the programme.

Delivery

The works were broken down into 5 key phases: –

  • Removal of roof slates and replacement
  • Installing hatches in the canopies
  • Cleaning the canopy guttering systems
  • Repair works to 4 chimney stacks
  • Installation of temporary works – scaffolding

Delivery Challenges

As the Bingley Station building, and associated infrastructure is listed on-going two-way communication and site visits from the local authorities Conservation Officer took place throughout the planning and implementation of the project.

The severity of the defects present was not entirely known until the entire roof was stripped, so robust change control was implemented. This was achieved by ensuring the client asset team were fully involved via site meetings and the Technical Query process to ensure any additional work required was captured and reported as early as possible. This prompted real-time discussion and agreement as to how to proceed and minimised any detrimental programme impact.

  • Stakeholder Management

    A Stakeholder Management Plan was produced and was regularly reviewed and updated throughout the construction works. The key stakeholders were: –

    • Northern Rail
    • Bradford City Council
    • Network Rail – Route Asset Managers (Buildings & Structures)
    • Local neighbours

    A particularly good relationship was established with the Train Operating Company, the Local Authority, and local residents, who were kept informed of progress and any issues throughout the works. Good working relationships were fostered with all the subcontractors, who all worked as a team.

    Positive feedback was received from the Network Rail client team and from the TOC regarding the quality of the works delivered.

    No disruption to station operations occurred as a result of the works.

  • Effective Communication

    Weekly/Monthly Progress Meetings were held to update the client team and address any emerging issues in a collaborative manner. Network Rail’s AMP process was adopted with mitigation measures, trigger points and lines of communication established before works commenced.

    A number of joint site visits were undertaken, and a WhatsApp group formed to facilitate real-time  reporting. KPI data requirements were agreed, and the frequency of submissions established; these were adhered to throughout the delivery period.

  • Team Structure

    The delivery team consisted of: –

    • Contracts Manager
    • Project Manager
    • CRE-Design (Temp works)
    • CRE Construction
    • Site Manager
    • Site Supervisor
    • COSS/PIC
    • Skilled Operatives
    • Safety Manager
    • Design Manager
    • Quantity Surveyor
  • Resourcing

    CML have a directly employed workforce of 294 staff, so the labour percentage utilised on this project was relatively small. Site teams are self-sufficient in respect of hand tools and some small plant with other plant hired using our plant hire partners. CML has a significant heavy plant fleet e.g. excavators but this was not required on this project.

    The specialist nature of some of the works on this project called on the use of sub-contractors sourced from our supply chain. We used local sub-contractors which also satisfied the Conservation Officer who was familiar with the companies and the quality of the work they generated.

  • Logistics of Providing Materials

    CML have a strong working relationship with its suppliers nationally established over many years of trading, built on mutual respect and a sympathetic approach in terms of payment terms.

    A condition of Listing meant that we were tasked with re-using 100% of the stripped materials ensuring as sympathetic repair as possible was achieved.

    This was possible to around 95% of the overall capacity however additional timber, masonry, roof, and ridge tiles were sympathetically sourced to complete the works procured from our local trade suppliers. The tiles and masonry were sourced from reclamation sites with the approval of the Conservation Officer.

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