Tag Archives: Bricscad

D3aBT..back from the dead!

This gallery contains 18 photos.

It’s not often obsolete devices come back from the dead but this has happened for the Disto3aBT. Leica have released a new version of their DistoTransfer software that gets it working with Windows 10. Microsoft killed my Disto. It’s been … Continue reading

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Unlearning line: what is LOD 500?

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Can a survey scale relate to a BIM* LOD? “LOD 500: The Model Element is a field verified representation in terms of size, shape, location, quantity, and orientation. Non-graphic information may also be attached to the Model Elements.” Ref AIA, … Continue reading

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CAD … touching the Surface

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New year, new tablet, new CAD. CAD by touch on the Surface Pro 4 is interesting. On the face of it the Surface is an ideal ‘CAD on the go’ platform: plenty of processing grunt and good battery life. Sure … Continue reading

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Drawing for… understanding

This gallery contains 13 photos.

New guidance. In providing a client with a specification for historic building survey I had a reminder that Historic England has published new guidance on drawing so I took the time to read it through. It is a guide to … Continue reading

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Protected: RP Elevations by TheoLt & QGIS

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A cheap tablet for TheoLt

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Tablets are becoming ubiquitous, the rise of the iPad and its Android competitors has pushed Microsoft to develop a ‘re-worked’ tablet PC by getting Windows to work like IOS or Android. Windows is now something you can drive with your … Continue reading

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Kite aerial photogrammetry: 4 infill points & break-lines

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Hunting the edges. Ideally break lines should be digitised off the surface mesh but for speed these lines are traced of the ortho-photo as polylines then matched to the required z value before reducing them to plain 2d lines and … Continue reading

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Kite aerial photogrammetry: 3 developing the contour model.

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Point density. Digitising points off the mesh reveals the structure of the earthwork, the point density is approximately at .2m post spacing increasing to 0.1m at detail areas. A test patch at 0.05m did nothing to improve the model. As … Continue reading

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The slippery slope: CAD hachures

This gallery contains 12 photos.

The depiction of slope by hachure shading is a cartographic convention that dates back to the Austrian cavalry officer Johann Georg Lehmann who, in 1799, devised a system for the rapid military mapping of terrain by field drawing. It has … Continue reading

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Check the sketch: getting down to detail

This gallery contains 7 photos.

I recall being called an ‘old school’ surveyor by a survey manager in a suit (who should have known better) when I suggested the site sketch is still the ‘last best resort’ in mapping building deatils. Since then I have … Continue reading

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