radius of a existing wall

[Anonymous]

(New To CAD) How do I fine the radius of these walls? See SS attach. I try the MEASUREGEOM (Command) but the radius tool is looking for a circle type item. I also try the PTYPE (Command). 

[Alfred.NESWADBA]

Hi,

if you don't have an arc or circle at that position (hard to say just from the screenshot) you might try

• create a circle with option 3 points
• select the best fitting points for that circle
• then you can use _MEASURE to get a radius

- alfred -

[scot-65]

Another method is to use a single 2-point polyline
from say, sp2 to sp6. From there enable grips by
selecting the polyline, hover the midpoint grip
and a cursor tip is displayed.
Select "Convert to Arc" and point to sp4.
Radius dimension to finish.

And welcome to these forums.

???

[Anonymous]

Thank you, so it would look something like this? see SS

[Kent1Cooper · Accepted solution]

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@scot-65 wrote:
Another method is to use a single 2-point polyline
from say, sp2 to sp6. ....

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I would not do it that way.  I would draw either a Circle using the 3Point option [suggested by @Alfred.NESWADBA in Message 2], or a simple 3-point Arc, in either case using the same appropriate location on each of sp2, sp4 and sp6 elements [whatever they are, assuming you can Osnap to something the same on each].  The huge advantage of an Arc or Circle is that you can just pick on it and the Properties palette or QuickProperties, or if you like a LIST command, will tell you its radius, which they can't do for a Polyline arc segment.

[Kent1Cooper]

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@Anonymous wrote:

.... it would look something like this? ....

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Like this:

whether you do it as an Arc or a Circle or a Polyline.  Get the radius [by whatever means you choose] of the yellow Arc.  In this case, that's an Arc object, Osnapped to the MIDpoints of the inboard flanges of the outermost and middle columns.  If the columns are accurately drawn, any three of them would do.  Depending on what you mean by the radius of the wall, you may prefer the midpoints of the outboard  flanges instead, or the centers of gravity of the columns [which could be their insertion points if they're Blocks].

[imadHabash · Accepted solution]

Hi and Welcome to AutoCAD Forum,

>> I try the MEASUREGEOM (Command) but the radius tool is looking for a circle type item.

Yes .. that's logic . since you asked for a Radius info then arc or circle must be exist . 

>> I also try the PTYPE (Command). 

 It has nothing to do with this command . !! 

To get the radius for existing wall , you have to draw Arc or circle over your existing lines . start ARC command from menu bar above ( see below image ) and select the option that meet your needs . 

 

Regards,

[dbroad]

What makes you think the wall has a single center point?  The only way to be sure is to draw radial lines through each of the column web axes. If they don't intersect at a common point, you don't have a single radius arrangement.  The other solutions proposed should be sufficient to give you an approximate radius.