Which mark?

[+Beast of Traal]

I went looking forThis benchmark but the discription discrbes Many diffrent marks which one would I log. This one is a triangulation station

TURN RIGHT PASSING THRU GATE AND GO SOUTHERLY FOR 0.1 MILE TO AZIMUTH MARK SET IN THE CURB OF CIRCLE DRIVE.

STATION MARKS ARE STANDARD DISKS STAMPED FOREST 1970.

 

THE SURFACE DISK: IS SET IN THE TOP OF A 12-INCH CYLINDRICAL CONCRETE MONUMENT THAT IS FLUSH WITH THE GROUND SURFACE. IT IS 219 FEET SOUTHEAST OF POWERLINE POLE, 98 FEET WEST OF POWERLINE POLE AND 74 FEET SOUTH-SOUTHEAST OF THE CENTERLINE OF SURFACED ROAD.

 

THE UNDERGROUND MARK: IS SET IN THE TOP OF AN IRREGULAR MASS OF CONCRETE 42 INCHES BELOW THE GROUND SURFACE.

 

REFERENCE MARK 1: A STANDARD DISK STAMPED FOREST NO 1 1970, SET IN TOP OF A 12-INCH CYLINDRICAL CONCRETE MONUMENT THAT IS FLUSH WITH THE GROUND SURFACE. IT IS 24 FEET SOUTH OF THE CENTERLINE OF SURFACED ROAD, 17 FEET EAST-SOUTHEAST OF A 10 INCH ELM TREE AND 2 FEET WEST OF POWERLINE POLE.

 

REFERENCE MARK 2: A STANDARD DISK STAMPED FOREST NO 2 1970, SET IN TOP OF A 12-INCH CYLINDRICAL CONCRETE MONUMENT THAT IS FLUSH WITH THE GROUND SURFACE. IT IS 60 FEET NORTHEAST OF A POWERLINE POLE, 25 FEET SOUTH OF THE CENTERLINE OF SURFACED ROAD AND 2 FEET EAST OF A POWERLINE POLE.

 

THE AZIMUTH MARK: A STANDARD DISK STAMPED FOREST 1970, IS SET IN DRILL HOLE IN THE WEST EDGE OF CATCH BASIN OF THE CURB OF CIRCLE DRIVE. IT IS 97 FEET SOUTH OF THE JUNCTION OF THE CIRCLE, 77.5 FEET WEST OF A 20 INCH OAK TREE, 72 FEET NORTH OF AN 14 INCH OAK TREE AND 3 FEET WEST OF THE OPENING OF THE CATCH BASIN.

HEIGHT OF LIGHT ABOVE STATION MARK 37.7 METERS.

 

 

Ravenous Bugblatter Beast of Traal: a mind-bogglingly stupid animal, it assumes that if you can't see it, it can't see you - daft as a brush, but very very ravenous

 

[This message was edited by Beast of Traal on May 16, 2002 at 12:20 PM.]

 

[This message was edited by Beast of Traal on May 16, 2002 at 12:20 PM.]

 

[This message was edited by Beast of Traal on May 16, 2002 at 12:23 PM.]

[+rdw]

Go for the surface disk since it is the primary marker. The other markers are there to survey the location of the surface disk.

 

rdw

[+Web-ling]

What if the main disk no longer exists, but I find one or more of the auxillary disks? How should I log it?

 

[iryshe]

quote:

---

Originally posted by Web-ling:

What if the main disk no longer exists, but I find one or more of the auxillary disks? How should I log it?

---

 

A find. Good enough for government work

 

Jeremy Irish

Groundspeak - The Language of Location

[+patw]

The principle bench mark (the station) will have a triangle etched in the disk. The reference marks (RMx) will have an arrow pointing to the station.

[+jef]

Yeah but what about azimuth marks? Enquiring minds etc.