Bearing marker or something else?
Hi, If I can indulge you all...I have a couple of general survey reading questions here. In this area, there is concrete highway marker at the point "C.H.D. MON." At the right of it are coordinates. Does anyone know what "R", "L", "A" values represent?
Also, I assume the "CH" value is a bearing. If you walk 33.16 ft due S15° 23'09"W you will reach the pin above it. Is this correct? What does "CH" represent?
R is the radius of the curve, L is the arc length of the curve, A is the central angle (delta) for the curve and CH indicates the chord bearing and distance, basically the straight line between both end points.
Since the bearings are the same on both side of the existing/found mag nail, I'm inclined to believe that the surveyor found the mag nail to be S 87°18'51"W, 0.17 feet of the actual corner. Basically the saying the nail is about 2" off.
".....In this area, there is concrete highway marker at the point "C.H.D. MON." At the right of it are coordinates. ..."
The map calls for an iron pin at the property corner, not a concrete marker. The concrete marker may, or may not, be adjacent to the iron pin. Or the concrete marker may be at the south end of the curve, at the point labelled "C.H.D. MON" on the map. Further, my experience with concrete highway markers is that they only roughly indicate corners of changes in alignment at best. So you may be measuring off a false point.
Just one more thing........That map appears to be at least a few years old. It's really common to only find a small percentage of old monuments of record. They just disappear one way or another with time. Even fewer are going to be sticking up so that you can see them when you walk by. After 20, 30 years out in the weather they blend into the background very well. Needle in a haystack as it were.
Best of luck.
What state/jurisdiction you located?