No experience with emlids, I know a few years ago they where popular and cheap and see a few on the way now and again.
They seem to be the most popular of the Chinese brands. And being used on a few big construction projects.
Don't forget with gps you need it activated on magnet or have a maintainace contract at I think under 1k a year and a topcon/os subscription/connection either 40 hrs a month or unlimited, there are fews now doing pay as you go, seen one on the bay and then data, so either sim or tether to your phone.
My software currently is on a yearly subscription, as I wasn't sure about getting gps, so when it runs out I will get a perpetual license and decide then whether to add gps or not. The corrections from topcon seem the same price as everyone else, so not to bad. The emlid will run on free correction services, and seeing as my work is near London there is a chance that would be sufficient.
Truly you should be a minimum of 10 minutes per point to record position, potentially more depending on distance to nearest os Base station.
I think 3 points at 10mins or even half an hour would be worth it. Some of our jobs are 6+ months. It wouldn't always need that much accuracy we just have to stay inside the boundaries.
Either then control wise I would be say you need two good gps point and then set up off one and hold the bearing and complete a traverse, which if you have other control already you can do anf bring in to your work area.
I have watched the tutorial but haven't used the software to do a traverse yet. Hoping over Christmas I can have some time to play with it a bit.
If there are control points already I would need to get the gps out. Its only sites with nothing set down and no other buildings or features that would require it.
If your establishing Retros assume your doing direct and reverse measurements?
No I have learnt off the engineer we use at the moment. And I know some of his working practices leave a lot to be desired. He's good with cad though and has helped me there a few times.
On the topcon I'm assuming you survey in the point directly first. Is there then a function to take the reverse shot with so it averages the two shots or does it do it automatically when you flip it round?
As for CAD drawings, I like to add only as a layer in thr background, add all my points as text files with codes and layers done in CAD or rather magnet field as that's the cad programme I use.
I have been playing different ways. Either copying the points I want to use into another blank cad drawing and uploading them or export to an excel spread sheet and uploading that. I have watched the tutorial on uploading as a background but it's for an older version of software and can't find the option on mine
i assume your standard groundworks....so centreline of foundation, face of brickwork, pop-up, manhole etc.. HD bolts use line and offset or recently ive added each centre as a point so had 78 individual points then picked each one on the line and the furtherest to orienate and align.
Yeah pretty much. Some civils stuff but mostly pretty easy.
I haven't done a set of bolts yet
I have always been asked by engineers to draw a cross on the templates for bolt holes. Then they set up centre lines for the bolt sets and use stake to line to set them up
Look I'm available as and when if you need a chat or help.
Thanks that would be really helpful
Have A good one.
