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Case study 2 – Kingston Hospital

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Brief Case study 2: Photograph and video roof survey of Kingston Hospital, Regency Wing

The Regency wing of Case study 2 Kingston Hospital was built in the 1800s as such the roof requires constant maintenance. Our client direct us to find out the condition of the roof examining the chimney stacks, the pitch and elevation. Ridge tiles, pointing, guttering and general overall condition. Pretty much standard variables in most UAV inspections we complete.
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The Survey:

As the area was very sensitive (an operational hospital) with public moving around the site we were directed to the project manager on site. After signing in and completing various administration tasks. Sometimes we are required to provide a H+ S report and operational manual, insurance etc…). We were shown the landing and take off site.  This was well away from the general public and had restricted access. So we were confident that there would be minimal public traffic on site.

The Procedure:

When surveying an area of this building size it is important to find the correct starting and finishing locations in order to proceed in a logical manner around the building. It saves duplication the survey areas. As such we started on the west side of the building with the sun on our backs.  As it was a very clear blue sky day (10mph max wind) we were working in a very contrast environment.
This has particular challenges especially in shadow areas, away from direct sunlight.  Here we must either use auto shutter and ISO settings or manually select them ourselves so that the client will see as much detail of the roof as possible.  Moving around the roof area we concentrate the camera on various inaccessible locations taking care to zoom in on any particular details we feel the surveyor may interest in.  There are generally all sorts of debris and maintenace issues. From plant growth to leaking gutters. Rendering damage to slates missing and pointing issues. Notice the chimney stacks and there overall condition.
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Sometimes we don’t have any representation from the client (we just get a brief). So we need to make sure we cover all details from every angle so that the surveyors report covers is comprehensive. As the building is so large it takes several batteries to complete the UAV survey and as per usual once we had finished. The sun went in! Overcast days are so much easier for completing photography as you do not encounter such high contrast images.

Case study 2 – Kingston Hospital

Once all stills photography was complete we continued with the video survey.  This is conduct in a 4K resolution as specify the client. The great thing is the the 4k video is almost as good as the stills and the surveys can often see even more detail. They can even get stills from the video to high light to their client any more signs of wear and tear.
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The Conclusion:

As mentioned, this was quite a challenging environment in such a public space. During the course of the survey we had encounters with not only the general public. But also hospital management, concern  with privacy of the patients and noise. We had to reassure that no photographs were taken of individuals and we were only concern with the roof structure. Privacy is of paramount importance and we respect all private locations.
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By |2019-10-18T16:42:03+00:00March 6th, 2019|design, drone surveys, drones, technology, Uncategorized|0 Comments