topic Re: Weird Curve Wont Offset in Land Records and Valuation Questions

Weird Curve Wont Offset

LarryGaudieri — Wed, 30 Mar 2016 12:55:28 GMT

I'm trying to create a parallel utility easement along right-of-ways and really hope not to have to segment ever curve from plat. The attached *.jpeg shows a half-circle curve in a type of cul-de-sac or turn-about. I cannot for the life of me offset that arc without ArcMap crashing...does anyone have any tricks or suggestions? Thanks.

Re: Weird Curve Wont Offset

DanPatterson_Retired — Wed, 30 Mar 2016 16:05:00 GMT

simplify from an arc to a polyline or try splitting it

Re: Weird Curve Wont Offset

LarryGaudieri — Fri, 29 Apr 2016 12:42:29 GMT

I am needing to find a solution to this...it's like Parcel Editor doesn't like these circular curves...the easement parcel was a polygon class and loaded into the fabric....then it broke...there has got to be a way to split this or do something other than trashing the parcel...anyone?

Re: Weird Curve Wont Offset

TimHodson — Wed, 04 May 2016 19:18:56 GMT

Larry,

There a 2 possible reasons/solutions for this:

curve 40 to 39 has a negative radius, but it should be positive, or vice versa. Solve it by changing the sign of the radius.
you might see this when the central angle is 180 degrees. a 180° circular arc is neither "major" (>180°) nor "minor" (<180°) The way that the parcel editor makes the distinction, when the lines grid is not set up to show central angle, is by making the chord length a negative number for "major" curves (meaning with a central angle > 180°). Solve it by changing the sign of the chord length.

-Tim

Re: Weird Curve Wont Offset

LarryGaudieri — Thu, 05 May 2016 11:09:55 GMT

Again, thank you Tim....changing the sign of the chord length worked. Thus far in my fabric (I mean, how many of these could there be?) I haven't had a curve like this so I wouldn't have imagined that modifying the value for the chord distance was a "thing"....