Hi machine control types
I have the following GPS Gear
GPS
3 Leica GS 14 2016 Version
Base 28 SN 3487028
Rover 17 SN 3487117
Rover 23 SN 3487123
2 Satel 3Asd Easy as repeaters scanner etc.
My contracting equipment buddies use topcon and as a favor i would like to let them use my base for
gps doser comes and goes.
Any pointers on getting a Leica base to work with a topcon GPS doser.
Pete
Depends on the radios. If your contactor uses UHF radios, and you do also, then it should work. But if they are using spread spectrum radios, you need to attach an external Topcon spread spectrum radio to you Leica base.
I also remember there was some way to do it through GRIL commands but it was a long time ago I looked into it
Lee
The radios i use are UHF broadcasting message RTCM V3.0 just have to set the right frequency on GPS doser as well
to match Leica Base.
just have to get he localization file into the machine control panel PC from Topcon data collector.
Peter Kozub, post: 434748, member: 375 wrote: Lee
The radios i use are UHF broadcasting message RTCM V3.0 just have to set the right frequency on GPS doser as well
to match Leica Base.
just have to get he localization file into the machine control panel PC from Topcon data collector.
Yes, match the radio frequency, protocols and spacing.
What country are you in?
Do you use a projection?
Hi Lee
Canada
most everything here is UTM 6 degree zones NAD 83
99.9 % of the time we localize of of UTM GPS brass cap monuments that are all over the place here
to get on the UTM Grid then set some Mag nails on site close at hand to check into.
Here is the survey items contract Spec i wrote up for the job
Survey Item None Site Specific
GPS One point localization will be used
Hold Mag Nail 16 X,Y,Z
Hold Mag Nail 15 X,Y and check Z for vertical
The above stops a tilted plane Z position GPS for being created
CONTROL POINTS
See Attached site control points drawing
GPS Machine Control And GPS Grade Man Machine Grading Checking
Contractor GPS Base shall be less than 1000 meters from work Site and have good sky
Network GPS for machine control and GPS grade man are NOT PERMITTED
Contractor GPS dozer with less than 3 months past calibration certificate shall be provided
Doser blade GPS / machine fittings for blade shall be tight and well maintained for this project
Contractor GPS grade man will spot check grade produced by machine control once daily.
Contractor shall set suffice stakes / marks to check plan Model and plot machine control Program.
GPS Survey Grademan
GPS Grademan shall have a diploma in Civil Engineering and or Survey with 5 Years GPS experience
and shall work closely/supervise GPS Doser/Excavator operations and record other pertinent site works.
DTM Surfaces
The Engineer will provide finished surface in AutoCAD 3D FACE DTM in R12 DXF format for machine control.
The Engineer will work with Contractor for any lower Dtm Surfaces machine control.
for other intermediate surfaces machine control purposes.
Some surfaces may be to complex for machine doser grading thus a GPS grademan.
will be required to work with excavator etc.
Engineer shall provide Cut / Fill color plot to contractor so a balanced cut fill m^3
is created and a minimums of export/import be required and import will be generaLY spotted properly
to required areas ETC.
Unsuitable subgrade.
Locations of unsuitable material removed shall be pick up by gps grademan before back fill
and limits be store in PYXZD file with with file name structure IE June 6 2017 Soft R1XX.TXT
This file will be submitted the day of pick up with a simple poly line connect shots
on toe / shoulder.
If soft area is less than 5 tandem loads truck count will be used work limits by
GPS gradman picked up.
Grading 2:1 Slopes ETC
Slopes off main yard grade will be graded to sections shown on plan after removal of top soil
smoothing of slopes shall be within 5 cm of section position
Slopes shall be roller compacted and or Hydraulic Vibratory Hoe Plate packed.
Sloping with excavator by eye smoothing can be used in areas of generally good plan position.
Contractor Site Topo
The contractor shall pick up yard area on 5 meter grid in yard by GPS
ROBOTIC total station to be used in poor sky or existing works compromised
GPS use. ie next to buildings, fences etc.
The Engineer to provide contractor GPS surveyor autocad DXF of grid to contractor
Contractor GPS grademan to walk grid and take shot within 1.0 m+-
of grid intersections and submit PYXZD.TXT file to Engineer.
Engineer to perform Surface comparison of surveys to confirm and
optimize design to meet project Intent.
Survey Item Site Specific
EXCAVATION
Remove 300mm of material from OG DTM Surface By GPS Excavator or GPS Dozer
SMOOTH EXCAVATED SURFACE
Smooth to 1.9 % East West 0% North South using GPS Dozer
DTM balanced cut fill with push plan to be supplied by Engineer
PLACE GRAVELS
Using 150 mm offset from above place compact gravels.
VERTICAL POSITION
The machine DTM created surfaces shall be +-15mm to Engineers DTM.
All checking will be by RTK GPS local base rover.
Interesting. Next week, I am heading to Northeast Ontario, Canada to setup ISS (InSitu Soil Solidification) on a dam near a Gold mine operation.
A one point localization is actually no localization at all. This would be just assigning a known Coordinate to the base, then using Geographic azimuths, with no scale factor, and no translation. Theiscan be done with Topcon. But I would use the UTM projection and metric units in both systems. Then set base on a known Coordinate, stake to and verify Coordinates of other known points. This way you can also use OPUS for additional check.
Right now, I don't remember what the Canada version of OPUS is called. But I used this procedure in Alberta on last project I was involved in Canada.
leegreen, post: 434922, member: 2332 wrote: Interesting. Next week, I am heading to Northeast Ontario, Canada to setup ISS (InSitu Soil Solidification) on a dam near a Gold mine operation.
A one point localization is actually no localization at all. This would be just assigning a known Coordinate to the base, then using Geographic azimuths, with no scale factor, and no translation. Theiscan be done with Topcon. But I would use the UTM projection and metric units in both systems. Then set base on a known Coordinate, stake to and verify Coordinates of other known points. This way you can also use OPUS for additional check.
Right now, I don't remember what the Canada version of OPUS is called. But I used this procedure in Alberta on last project I was involved in Canada.
