Can anyone answer me if I could begin a survey routine with survce without entering heights? I think I want only bearings and distances. The hedigt is nessesarry for the calculations in survce?
johnymal, post: 324794, member: 7096 wrote: Can anyone answer me if I could begin a survey routine with survce without entering heights? I think I want only bearings and distances. The hedigt is nessesarry for the calculations in survce?
Well, the DC will gather the information, but if you just make sure that you HI and HR are identical, you don't necessarily need to bother with it. Remember though that "distances" are dependent on whether you're traversing horizontally. If you're going up hill or down, then heights matter.
If you're collecting Total Station data then real instrument/pole heights are irrelevant for 2D surveying (bearings and distances) only.
The TS will give the data collector the components to compute horizontal distance.
Not sure if you can tell SurveCE you're only doing 2D or not. My TDS Nikon software asks if you don't put in heights if that's how you want to survey and if Yes, then doesn't ask for instrument and prism heights again.
If you're just manually imputing bearings and distances, then no need for vertical components.
(Providing you input horizontal distances)
I have a TS 02 with allegro CX data collector, I control the instrument from PDA I only turn it to the target and using reflectorles. If I have zero in tabs heights ( instrument and backsigt) the rutine it will be right? I think if someone wants to make a 2d survey he will save time!
one thing to bear in mind is what is the purpose of survey and do you think collecting 3D could be used down the track?
I normally do surveys in 3D unless they are just bush cadastral jobs that one could hardly envisage a use for 3D.
There have been times when I have collected 3D knowing its only for 2D (cadastral) work only to be asked later "You wouldn't have any levels of that sight?" or similar.
It takes little effort to get 3D as opposed to 2D so I'd suggest keeping that in mind.
Yes I know that effort is liitle but wondering if I can do it and if it will be right!
Dammit, measure heights. Anything else is just laziness. Any surveying involving GNSS requires heights. We don't live on a flat world.
I am curius if it works without heights.
Almost any survey field soft will work just fine without carrying measure ups, just make your HI/HR zero or five or something reasonable, I know of one poor soul who had to re-topo a parking lot because the soft threw a fit at his 5000 foot rod, not survece soft, something older and more obscure.
It can be liberating to skip carrying rod heights for topo shots but I always carry them for control and just about always for topo just to keep in the habit.
A more interesting question would be to find how other surveyors "blow off" an elevation during regular topo, I have only used one field soft that had an option to do so, the rest of the time it has been through coding, or booking and left to the tech to fix, a step I would rather avoid, I would like to have the option to blow off an elev all together and also a option to simply remove it from the tin but allow the elevation to stand.
I do it all the time that I don't care about elevations. I just give the instrument height as 5.0 and my rod height as 5.5 and go to work.
I put my HR at 0 and my HR at 99. That way it's easy to tell that the elevations are bad, as everything is 100' out. If you put both at 5 or 0, then the elevations in CAD look like they could be correct, at first glance.
johnymal, post: 324794, member: 7096 wrote: Can anyone answer me if I could begin a survey routine with survce without entering heights? I think I want only bearings and distances. The hedigt is nessesarry for the calculations in survce?
Yes, you can, and if you like, you can even set SurvCE to 2D mode, where it wont even ask you for HI's
If the software is going to generate an elevation, make it generate one that is right if at all possible. Otherwise make it as wrong as you possibly can so nobody tries to use it.
Do you know how i will put it in 2d mode?
uncheck 3D, see page 147 of the manual.
http://files.carlsonsw.com/mirror/manuals/SurvCE_V3_Manual.pdf