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Case Study Category: Historic Building Conservation

Tonedale Mill
Tonedale Mill

Project Name: Tonedale Mill, Wellington, Somerset

Historic England Listing

Client: Jubb Clews Chartered Surveyors

Project Background
Tonedale Mills is a Grade II* listed former woollen mill near Wellington in Somerset, parts of which date back to the mid-18th century.  Production on the site ceased during the 1980s. The site has changed hands several times over recent years and attempts to convert some of the buildings into housing have failed and the buildings are now in a state of serious disrepair.

Project Overview
Historic England’s Heritage at Risk funded Somerset West and Taunton Council who appointed a team consisting of Jubb Clews Chartered Surveyors for Historic Building Conservation, Mann Williams Consulting Structural Engineers, Press and Starkey Chartered Quantity Surveyors  and Bury Associates. The task Bury Associates undertook was to produce 3D photogrammetric models and drone survey data, during rapid assessment for urgent works and repairs notices.  Further monitoring is in hand for enforcement action and redevelopment on this important Grade II* industrial complex.  

Tonedale Mill
Tonedale Mill

Historic England has since licensed the models produced for this survey by Bury Associates as teaching tools for use in its national Heritage at Risk programme.

Project Deliverables

  • ContextCapture 3D Photogrammetric Model – delivered as a web-based model viewable through any standard web browser. Part of the online model can be viewed by following this link :
    ContextCapture Model
  • Ortho Images of building facades and roofs for the marking up of defects.

Tonedale Mill
Tonedale Mill

Survey Methods Employed

  • Drone photogrammetry
  • Terrestrial photogrammetry
  • GPS survey control

Client Feedback
“The project required extremely quick data collection on site, both for the condition and metric surveys. The site was dangerous and the data collection technique of using drones and ContextCapture proposed by Bury Associates was deemed safer and quicker than using traditional methods. It produced accurate 3D models that allowed some of the condition appraisal to be carried out safely off site and provided accurate metric data for the cost study. The site was physically challenging. The Bury Associates team showed exemplary attention to detail and colleague care to ensure that safe working procedures were applied, and quickly processed the 3D model that has proved so useful”

Lynda Jubb – Director, Jubb Clews Ltd

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