Tag Archives: CAD

As built 1856

This gallery contains 11 photos.

Preliminary results of metric survey for conservation. TST traverse and wireframe plus rectified photography, measured drawing and roof details by KAP: B

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Plot lines: CAD to PDF

This gallery contains 19 photos.

I have clients who want definitive plots from PDF, they don’t want DWG they actually want paper and, for them, PDF is paper equivalent. I quickly discovered PDF does its own thing when it comes to line weights, and to … Continue reading

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Presenting metric measured drawing

This gallery contains 11 photos.

Line weights make a big difference to the readability of drawings. By emphasising opening edges depth in the view is apparent and architectural form is evident as space and volume. Sections tend to reveal the value of lineweights as queues … Continue reading

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Unlearning line: what is LOD 500?

This gallery contains 15 photos.

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

This gallery contains 10 photos.

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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RP Elevations by TheoLt & QGIS

This gallery contains 21 photos.

Required tools • AutoCAD /BricsCAD • TheoLt http://www.theolt.com/downloads/TheoLtR10.exe • Image processing tools: Light room/Photoshop/MS Paintshop • QGIS https://www.qgis.org/en/site/forusers/download.html# QGIS is a freeware, open source, GIS compiler for map based database work. It includes a useful geo-referencing tool which will re-project … Continue reading

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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

This gallery contains 6 photos.

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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After the diapointing A2300 the S95 shows promise

This gallery contains 7 photos.

I had hoped the modestly priced A2300 would do as a lightweight autoKAP mule but after a handful of flights found the cheap an cheerful approach lost its cheer as I grew weary of its splotchy image quality on 60m … 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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