Stream C GPR being towed over a field near Swindon.

We are checking the field for buried services.

The Stream C surveys a swathe of land 1.2 metres wide.

The Stream C is designed for highway work. We have adapted it for off road use.

The only one in the UK being used off road and it is excellent for buried services or archaeology.

Measured building surveys are meat and drink to us, but every now and again a project comes along that causes at least a moment of head-scratching. Sometimes that is a result of the size of the commission, at other times the level of detail required. One recent request however got us thinking simply about how to produce usable drawings of an extremely complex site.

The site was the swimming pool in Windsor Leisure Centre. The complexity arose from the requirement to show the position of every steel and bracket supporting the water slide, a series of tubes that curls in all three dimensions from the roof to the pool.

Underground Utility Tracing using Ids GPR, Fanborough town centre. Working within Traffic Management provided by Brunel Surveys Ltd

The visuals we are most often asked to produce are Verified Views for planning applications. These are done to specific guidelines that ensure as accurate an interpretation of the proposal is presented as possible.

However, occasionally a job comes along that is more open to interpretation. Such was the case when we were asked to produce a suite of images to help Network Rail show members of the public how replacing the current un-manned level crossings with bridges might look.

Our brief on tis job was to provide a scan of Romford town centre, so that a massing model could be created by the client.

For this job we used a Trimble SX10.

This isnstrument scans at a lower resolution and slower speed than a conventional laser scanner. However the instrument traverses as a conventional total station, hence there is no post processing of the scanned data. It is all brought back to the office is its correct position in the world.

Initially a similar brief to surveying Windsor Leisure Centre, we were asked to produce a set of drawings to enable Hippo Leisure to re-design the slide flumes. However, in this instance the steelwork was so complex that attempting to show everything on 2D drawings would result in drawings too detailed to actually be of use.

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