Arc Length extension lines

[sdooleySQJHB]

Hi, Is there anyway of changing the extension lines to permanently radial. I have got two arches an the same drawing and one has the arc length shown how i want, the other shows orthogonal extension lines. I have searched all sorts of things but can' t find an answer.

Help.

[Kent1Cooper]

This has been an issue for others as well -- >here< is another thread on the subject.  Or, you can use a routine for dimensioning arc lengths from before there was an arc-length option in Dimensions, such as >this< [I haven't tried it], or you could Search for others.  Some such routines won't include the arc-shaped prefix, and some won't update when you Stretch the Arc shape, but see what you can find.

[sdooleySQJHB]

Thanks for replying so quickly. However both your links send me to a cadalyst page to download the LAD.lsp file. I would like to read the other thread if you could resend me that one. 

Thanks

[imadHabash]

Hi,

would you please show us an image for your two cases ?

[Kent1Cooper]

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@sdooleySQJHB wrote:

..... I would like to read the other thread if you could resend me that one. ....

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Sorry about that -- it's >here<.  Search for terms like "arc length dimension" to find others.

[Kent1Cooper · Accepted solution]

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@imadHabash wrote:

.... 

would you please show us an image for your two cases ?

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It's this difference in the results of DIMARC:

The extensions lines are parallel when the included angle is less than 90 degrees, then switch to radial.

[imadHabash]

Ahhh ... Thanks for the clarification . 

[sdooleySQJHB]

Thanks Kent, thats exactly it. Looks like i will have to live with it.

[Anonymous]

What I have been using for arc lengths less than 90° is the "arcld" command. This creates an arc length dimension, but in a text form. Instead of typing the command all the time, I created an "arcld" command button and placed it next to the arc length button "dimarc". The fractions do not auto-stack, but my work around for that is to type a quotation mark after the fraction, which stacks the fraction and then I delete the second quotation mark, or just leave the fraction unstacked. The extension lines are the same as an angular dimension but with dimension text (1'-3 15/16") instead of degrees (35.47°). Also, not really a problem, but the dimension text will not change if you alter the extension line location. This can be used with whatever units you are using. I does not have to be architectural units.