This question appears in our local forum. Is there any way we can create an arc by defining the arc length? There is no direct way to do this. There are some methods that seem to allow you to define length. For example start, center, length. But this is defining the chord length, not the arch length.
There is a suggestion to calculate the angle using a simple mathematic calculation, comparing the arch radius and arch length. After you get the angle value, then you can draw it. But it is not easy.
One of our member, Ast, suggest a better solution: draw the arch, then modify it using lengthen tool.
Lengthen tool allows you to define the object total length, including an arch. Select the total length option, then type the distance you want.
Command: LENGTHEN
Select an object or [DElta/Percent/Total/DYnamic]: TSpecify total length or [Angle] <1.0000)>: 1000
Select an object to change or [Undo]:
Now if I try to inquiry or see the arc properties, I will see the arch has the exact length I wanted.
I never need to draw arch by defining its length. Does anybody know why we would need to do that?
man you have know idea how much this tip helps. up until now, the project i was working on was kicking my trash. THANKS!
I found this lisp routine at cadalyst that does the job:
http://cadtips.cadalyst.com/curved-objects/create…
I hope this helps someone!
Thanks Tom :)
I never thought that there would be a LISP to do it.
Same here, modifying subsea cable routes. good tip thanks
Same here, modifying subsea cable routes. good tip thanks
hello every body
i want to know .. that
why dimensions are spread here and there when we move an object ?
plz solve my problem
atiq
Edwin, thanks for the info, greatly usefull! I'm laying a subsea cable and need to modify our route. I need to define an exact arch length as our new lay route for the cable end. This is the best answer.
Greeting from all Surveyors :)
Odong,
I'm glad this tip can help. Greetings to all surveyors :)
We have to measure "girth" dimensions all the time on ships, so we lay out arc lenths on the screen for verification.
I have been drawing polygons the last weeks, this is very helpful. Thank you
really helpfull , thanks brain
Who needs to draw an arc with a specific length? Surveyors need to do it all the time. Based on a legal description, something like, "Then an arc to the left, having a radius of X and length of Y". I was hoping dynamic input and grips would be an alternative but it looks like you have the best way to do it.
Thanks for the information Brian.
I don't work much in surveying, so this is a valuable information for me.