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Location: Accurate Grade HomeAccurate Grade - Precision Grade - Constructing Accurate Grades Accurate –Precision – Grading
GPS Precision Grading / Laser Precision Grading
So this has got to be expensive right? Well precise accurate grading does have a price, but there are multiple levels of accurate grading systems to suit any contractor, farmer, or pavers needs.
Click Here for the Background of Precision Grading
Basically There are 3 types of accurate grade control systems. Each is discussed in depth if you click on the links below, but here is a basic description.
Laser Accurate Grade Control / Robotic Total Stations –
Pros - Cheaper to install, machinery dual use for survey crew.
Cons – Only control one machine.
These systems are a direct descendant of the theodolite, which morphed into a robotic total station which has remote controls and the like. These were surveying equipment until someone figured out that if they already swivel, and they already can track an object and keep a straight line, hmm just make a receiver and add the internal guts to either control (automated sytem) or indicate to the driver (driver controls the depth of the blade) the current grade and the machine’s relevant position.
Laser Accurate Grade Control with Rotating Lasers –
Pros - Middle price range, run multiple machines, multiple grade options.
Cons – Line of sight limitation (hills block lasers),
These systems are an overgrown rotating laser with a receiving system on your machine as in the example above. However, this laser continually spins 360° covering a small job site. Multiple machines are then able to use the reference point generated by the laser.
Laser Accurate Grade Control / with Lazer Zone and GPS –
Pros - X Y and Z coordinates for your machine over multiple acre sites.
Cons – Need large sites and multiple machines, or precision on tough terrain to offset costs.
Most advanced system available integrating topo maps (x and y coordinates on the map so no stakes), laser accurate grading (as above), and the ability to generate elevation references 33 feet up or down. This allows for hills and multiple laser configurations for really big sites. Basically a laser zone rotating laser can communicate with multiple more creating a 150 foot vertical elevation map for your machines to read.
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