King Edward VII and Queen Mary School
Dating back to 1908 the King Edwards & Queen Mary’s School s is one of the leading Independent Schools in the North West, with an outstanding campus situated on the Fylde coast. The main building is an imposing Victorian red brick property with a high amount of dressed stone work.
The school has been developed over the last 100 years and now comprises of 7 buildings of varying age, architectural style and condition.
eBIM™ were commissioned by Howarth Litchfield Partnership to carry out a full as built survey of the building. In this instance the client initially only required 2D deliverables, the decision however was taken to create the project in Revit and export the produced model to create 2D elevations, floor plans, reflected ceiling plans and roof plans.
This decision was made on the basis that the overall modelling time would be indifferent but there would be the added benefit of a 3D BIM available afterwards which could be used for a variety of presentation, construction, building Information modelling and documentation needs.
3D DATA CAPTURE
As with many School and Academy projects the survey was scheduled to happen within the autumn half term holidays. This provided a 2 week window to survey over 12,000sqm of campus. A three man survey team where deployed, taking with them 1 Faro Photon laser scanner, Trimble robotic total station and Trimble GPS.
This would allow the scanning to commence straight away while the third surveyor carried out a detailed external topographic survey and fixed control to tie the whole project together.
The project was broken down by the 7 individual buildings to form clusters of data. This is standard practice for eBIM™ when tackling large scale scanning projects. It allows for tighter control over the registration and also allows for a phased delivery of point data back to the office.
At the end of each day the latest scans would be saved and pre-processed over night. This meant that by the end of the first week on site, the first couple of buildings had already been registered and the data deliver back to the office. The modelling team could then commence modelling in week two, while the surveyors completed the site work.
In all it took the full 2 weeks of half term to capture all internal and external data, including a large topographic survey of the entire campus grounds amounting to over 600 laser scans and 50GB of raw data.
As the first weeks data had been fed back to the modelling team already pre-processed, they were able to hit the ground running and begin modelling the first building of the project by week 2. A team of 3 modellers were used working on individual building clusters which were regularly saved back to a central site model. The first buildings completed were the relatively new infant blocks. Due the building age and size these were modelled very quickly followed by the gymnasium and junior school.
It was only in week 3 when the team began to model the oldest Victorian area of the school that modelling became more time consuming.
The original building was constructed at the turn of the century and the roof in particular posed a number of challenges. What looked very symmetrical from the ground, turned out to be built in a quite confusing and somewhat adhoc way, with rooflines merging into each other. It was also highly ornate in places requiring many more detailed features to be modelled.
Once completed the project was delivered in 2D as required, with all the relevant data exported from the 3D Revit model. Dwfx files were also supplied allowing the models to be viewed either in Internet Explorer or Autodesk Design Review. Finally we also exported the Revit files as .IFC format for conversion to COBie.