I also particularly like this part too.....
And then the lack of any seal or stamp.
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Let me correct that for you:
FREE EXPERT opinions
And our opinions are worth far more than our advice.
Did you follow my advice? Did you purchase StarNet, create a network, and check and balance the results??ÿ The reason you get snark is that we know you wont do that.
Having worked on a large civil project with no survey budget (because a million was too much), I can assure you the cost was much more by the time they hired me.
in fact, in my experience, it is unlikely you have saved anyone anything at all.
We all truly wish you good luck, but doing control well isnt easy and it is a skill that you wont have until you value it.
@rover83 I like that in the verbose description of his remarkable intellectual status uber alles, he states that (he) supervises and instructs "REGINSTERED" Land Surveyors...
I'm enlightened, and a better, more humble man, by the new terminology.
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I think you are massively over complicating this.?ÿ
The original primary control pins installed back in 2018 are still there (so hard work has been done for me)
I have checked them with an EDM and they are bang on.
I have now used them and set up secondary control within the site to work from, easy peasy lemon squeezy.?ÿ
I've built enough buildings to know that 20mm out of final position means absolutely nothing, as long as the structure and elements within it work together within the specification tolerance then all is well.
Give or take a few centimetre regarding final positioning does not mean the building will collapse killing everyone in it!!
Ensuring quality regarding the installation of structural elements such as concrete and rebar is a different kettle of fish, but let me stress, this is not complicated and with a bit of experience and the right help, anyone can do it.
I have never at any point stated that I am building a bridge spanning a distance that requires the curvature of the earth to be considered when positioning, it just a residential RC frame structure in a run down area of London that is being thrown up like all RC frame residential structures do.
Yes I came to the 'professionals' for some advice and on the whole I have been given some great bits of info, but the super-surveyors need to get some perspective on what I am asking and sit back and take a chill pill.
Its a bloody typical construction site like anywhere else in the world, not Great Trigonometrical Survey of India!
I only wanted to know how to tweak a few control pins.?ÿ?ÿ
I think you are massively over complicating this.
No, your communication skills are just terrible, which would put them on par with 99% of engineers that I deal with daily in professional practice.
The original primary control pins installed back in 2018 are still there (so hard work has been done for me)
I have checked them with an EDM and they are bang on.
I have now used them and set up secondary control within the site to work from, easy peasy lemon squeezy.
Hey, that's odd, because this is from your original post:
"I am in the?ÿprocess of setting up the site primary control and would like advice on how to ensure it's accuracy...I would like to use the traversed survey and set it as the primary?ÿcontrol referenced back to the GPS survey coordinates. How do I do this?"
Your OP had not a word about existing control, and now we are finding out that you just used a total station (highly likely it was not just an EDM) to densify the network and set secondary points.
Another gem from your OP: "I have plotted both surveys in CAD so was?ÿthinking a simple CAD technique may do it?"
If you think it's so damned simple then why ask us?
When someone mentions using mixed GNSS/conventional techniques to set primary control for a high-dollar layout project with "a 15-storey tower" (your words), and in the same breath mentions using "a simple CAD technique" to adjust it, that's a massive red flag to any competent surveyor.
I've built enough buildings to know that 20mm out of final position means absolutely nothing, as long as the structure and elements within it work together within the specification tolerance then all is well....
Ensuring quality regarding the installation of structural elements such as concrete and rebar is a different kettle of fish, but let me stress, this is not complicated and with a bit of experience and the right help, anyone can do it.
Oh look, something else you should have mentioned in your OP...
Any surveyor worth his salt sets primary control tight enough to lay out all elements that may be required, which includes structural. Indeed, the structural elements are the most critical items, and the main reason surveyors are hired to set control - because we usually DO need better than 20mm of precision, and 20mm out of final position can sometimes blow a project.
Its a bloody typical construction site like anywhere else in the world, not Great Trigonometrical Survey of India!
No. If you think all construction sites are the same and the control requirements are all the same, then you're either an idiot or arguing in bad faith.
You keep on insisting that this is not complex and that you know what you're doing. Yet you came here asking for free advice about a complex process. Make up your mind.
And the next time you ask for (free) advice from professionals, it might be helpful to include the critical details, and it would certainly help if, when we ask for additional information, provide it rather than telling us how awesome you are and how you don't really need our help.
All we can do is work with what you give us.
Easy.....go easy...?ÿ
Don't let it get to far under your skin. The advice found on the site is given on good faith and for humor and collegiality.
If he wants to use or dismiss it then so be it, and do t let it roll up your BP because life is way to short to get into a flame war of ad hominem on the web.
Thank you for taking the point on the rebuttals, I learn what I don't know and what I do by the awesome people on this site.
It's Friday.
Time to get ready for weekend!
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Thanks for your free advice, I am truly humbled by your knowledge and generosity.?ÿ
Na, I have just thrown it altogether and will hope for the best, it's what I have done for 20 years and it has failed me yet, here's to another 20 years of luck!
You are a funny chap.
On reading your lovely message I have now decided to take a long hard look at my 20 year career and have realised it's all founded on luck and chance.?ÿ
You have made me see the light and for the sake of the people I will no longer attempt the art of setting up control and will throw money at 'highly' skilled surveyors to come in a chuck up a few coordinated sticky yellow targets then disappear never to be seen again while the real workers build the building we all live and work in.
Stay safe poppet ?????ÿ
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Thomas I don't think Rover83 is the funny chap here. Either one is competent at what he does or if not he seeks advice/knowledge in order to become competent. You come seeking advice yet dismiss the value of the profession you seek advice from. That makes you the funny chap. Any prudent individual would employ a competent person to perform the tasks he himself was not competent to perform. Your questions show you are not yet competent, yet you perform the tasks anyway. Maybe you won't make a mistake of consequence, but if you do, "I was just trying to save the company money" will be a pitiful defense of your actions.
Ps
As for not stating that the primary pins were already in place, the reason is because I wanted to know how you clever chaps do it, how you start off with GSP coordinated pins, then tweak with the total station (excuse the previous split of the tongue 'EDM') and then go from there.
I was always going to refer back to the original pins to see if I was close, I have time on my hands before the project starts so I thought I'd give it a whirl to pass the time.?ÿ
The original boundary survey and architects design are based on these original pins so I'm not an idiot as you so kindly suggest, and would not go off on a tangent (see what I done there ???? ) and start from scratch without telling anyone.
I have never suggested control is easy and as I keep mentioning, my lengthy expertise as shown me how vital it is to ensure it is correct.
As for the value, complicity and diversity of construction projects, surely you can give me credit here and make an assumption that I know what is tricky project to build, most typical residential projects are very simple to build any 'idiot' can do it, I'm sure you have meet a few builders in your time.
I have been given some good advice here and will take it on board and put in some time to learn some new techniques.
But seriously, when an 'outsider' does step into your respected world, take a chill pill, with a pinch of salt.?ÿ
Peace out homies!
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