Category Archives: Modeling

Contouring Surfaces

I’ve been playing with some ideas, code and Carlson Civil Suite today and I’ve stumbled across an interesting issue with Carlson’s contour routine. Given this equation for a hyperbolic paraboloid, For more information on this surface And porting some code … Continue reading

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Carlson Software Surface Manager

How many times have you pieced together the spot elevation data on a set of plans, triangulated it and then contoured it only to find isolated areas where the triangulation routine did not quite get it right? I sometimes contour … Continue reading

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A Word About DTMs and TINS

Seems I have gotten ahead of myself, I have started posting about things like DTMs and TINs and I have not attempted to explain what they are. For starters, a DTM is a Digital Terrain Model and a TIN is … Continue reading

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Why Things Like Alignments and Typical Sections Matter

Occasionally I encounter a set of grading plans with nothing but contour lines as a guide to building a site. Seldom, if ever, does contour lines provide sufficient data to properly establish an accurate DTM from which to work. Allow … Continue reading

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