MattG Posted May 27, 2010 Share Posted May 27, 2010 (edited) I am trying to dimension a circumfrance distance and/or a arc length. Reason being I need to figure out the distance between lights on a circle truss for various reasons. This is somewhat spotilght based. Is there a way to do this? What I have is a 30' OD circle that has lights every 45 degrees. My first thought was to draw the a arc from light 1 to light 2 and dimension the arc, this works, but I then have a whole ton of arcs I need on my drawing for nothing more then dimensions, and I have to draw them all in. I really don't want to do that, anyone have any thoughts? I also understand the math for this isn't too hard to work out and I have already done it in the literal application. It is more the process as this is something that comes up often. My wish would be a dimension tool that had a mode for this. Where I could select a center point then a point a and then a point be using the distance of your center to point a as your radius and kept that in mind when selecting point b limiting you to stay on your radial path if that makes sense. my thoughts on it Edited May 27, 2010 by MattG Quote Link to comment
bcd Posted May 27, 2010 Share Posted May 27, 2010 Good suggestion - a linear dimension is defined by two points - a radial dimension could similarly be defined by three. There is the option to Modify>Covert line to dimension but this only provides the angle between two radii, rather than your required arc-lenght. The best I can identify today is placing your arcs in a hidden class. At least this way they do not clutter your drawing, It can be turned off and the dimension will remain visible. Perhaps there are more elegant solutions. Quote Link to comment
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