topic Spiral curves in ArcGIS Pro Questions https://community.esri.com/t5/arcgis-pro-questions/spiral-curves/m-p/304755#M13222 <HTML><HEAD></HEAD><BODY><P>Has anybody worked with the&nbsp;<A href="https://www.arcgis.com/home/item.html?id=aad8df467467489582fa02554d774aee">Parcel Edit Helper add-in</A>?</P><P></P><P><IMG alt="" class="image-1 jive-image j-img-original" src="https://community.esri.com/legacyfs/online/447868_SpiralCurve.PNG" /></P><P></P><P>The legal description does not provide a start and end radius. How&nbsp;would I go about mapping this?</P><P></P><P><STRONG><EM>thence on a spiral curve right (the long chord of which bears South 88° 40' 58" West 199.96 feet) 200 feet</EM></STRONG></P><P><STRONG></STRONG></P><P>Thank you!</P></BODY></HTML> Thu, 16 May 2019 22:08:11 GMT Anonymous User 2019-05-16T22:08:11Z Spiral curves https://community.esri.com/t5/arcgis-pro-questions/spiral-curves/m-p/304755#M13222 <HTML><HEAD></HEAD><BODY><P>Has anybody worked with the&nbsp;<A href="https://www.arcgis.com/home/item.html?id=aad8df467467489582fa02554d774aee">Parcel Edit Helper add-in</A>?</P><P></P><P><IMG alt="" class="image-1 jive-image j-img-original" src="https://community.esri.com/legacyfs/online/447868_SpiralCurve.PNG" /></P><P></P><P>The legal description does not provide a start and end radius. How&nbsp;would I go about mapping this?</P><P></P><P><STRONG><EM>thence on a spiral curve right (the long chord of which bears South 88° 40' 58" West 199.96 feet) 200 feet</EM></STRONG></P><P><STRONG></STRONG></P><P>Thank you!</P></BODY></HTML> Thu, 16 May 2019 22:08:11 GMT https://community.esri.com/t5/arcgis-pro-questions/spiral-curves/m-p/304755#M13222 Anonymous User 2019-05-16T22:08:11Z Re: Spiral curves https://community.esri.com/t5/arcgis-pro-questions/spiral-curves/m-p/304756#M13223 <HTML><HEAD></HEAD><BODY><P>Hi Anna, the spiral is typically used to transition from one circular arc to another, or else to transition from a straight line into a circular arc, or from circular arc into a straight line. So the snippet of the legal description you have above is, on its own, not enough information. To use the spiral tool you'd need to use the information from the prior and subsequent calls, and get the radii from each of those. If one of the prior or subsequent calls is a straight line, then you'd use the "INFINITY" string for that particular side.</P><P></P><P>-Tim</P></BODY></HTML> Fri, 17 May 2019 00:43:55 GMT https://community.esri.com/t5/arcgis-pro-questions/spiral-curves/m-p/304756#M13223 TimHodson 2019-05-17T00:43:55Z Re: Spiral curves https://community.esri.com/t5/arcgis-pro-questions/spiral-curves/m-p/304757#M13224 <HTML><HEAD></HEAD><BODY><P>Thank you, Tim! That was exactly the kind of response I needed. Cheers!</P></BODY></HTML> Fri, 17 May 2019 22:32:28 GMT https://community.esri.com/t5/arcgis-pro-questions/spiral-curves/m-p/304757#M13224 Anonymous User 2019-05-17T22:32:28Z