How to Read Surveyor Building Grade Stakes
I visited a dam reconstruction site today on the mountain. I've washed some piece of work on the project going back to 1993. I did the applied science design survey topo and stuff last year for the engineer.
I put in proposals for the construction survey work only didn't get the work. The contractor that got the job is totally into machine control. They've got it on a dozer, a blade and an excavator. At that place are practically no stakes for grading slopes, and excavations. It'south all modeled and done by the operators in the machines.
They've had rain and are behind schedule and were working today. I know the engineer and had a dainty visit with him and the general superintendent. They are perfectly adept with the GPS car control accurateness. Today they were excavating for a toe drain trench which has a blueprint form and alignment. No stakes, the excavator operator was in control with his on board machine control. The future is here folks, if you desire to be involved in earthwork construction better learn how to make auto control models, the days of staking are mostly gone.
I wonder how long before the machine operators will be eliminated also.
Also, this is a very reputable dirt contractor and they outbid all bidders past $300,000 on a two one thousand thousand dollar chore. I suspect their ability and utilise of machine control had a lot to do with it.
Topic starter Posted : September 8, 2013 9:14 pm
> Too, this is a very reputable clay contractor and they outbid all bidders by $300,000 on a 2 million dollar job.
Ouch! That's a lot of money to leave on the table. It sounds like their estimators have gotten a niggling ahead of their business managers.
Posted : September 8, 2013 9:57 pm
Who modeled the site for them? Who set up the command onsite for the machines? Who is doing the QA/QC?
In my opinion all of that could be and should be work done by a surveyor.
At to the lowest degree in this area contractors unremarkably rent a surveyor to do that work. The desire someone's else'southward E&O insurance to exist on the line if nothing else.
Posted : September 9, 2013 3:58 am
The contract required a qualified licensed surveyor. I didn't ask only I'd assume they have one on staff. This job is on the pocket-sized side for this contractor. The final equally-built must be done by a licensed surveyor. They do their machine command models in house.
Topic starter Posted : September 9, 2013 8:09 am
The first job I was on that had machine control was well-nigh 2003 or 2004. It was 2 miles of form, drain and surface for the BIA. The contractor was a good client and we had fooled around with his new 'toys' and got the learning curve in a managable spot.
Of course my cost did not include standard offset stakes, just HV control. The model had been built by a third political party and we were more than concerned with the model than building the route at kickoff.
Weeellll...the BIA had a staff of nearly six inspectors that were howling like they had jiggly parts defenseless in a wringer. They didn't take whatsoever get-go stakes to check the class! (Of grade my suggestion was to tell them to become a level out and bank check information technology themselves.. )
After several meetings and a couple of demonstrations about half of them understood what was going on. The other half thought it was voodoo..
I realized so that dragging a chain on 'fittys and hunnerds' was truly a thing of the past.
Posted : September ix, 2013 10:34 am
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Posted : September 9, 2013 xi:32 am
I don't know a single surveyor that likes setting grade stakes over and over, I could be wrong. Yet, I exercise know a lot of surveyors that like to sit down in their air conditioned office and transport their crew out to set stakes over and over.
We withal station the road so the inspector will know where he is for taking density.
James
Posted : September 9, 2013 eleven:43 am
Down here at the tip of Africa, machine control is very rare, I have just seen it on a few large road jobs, but in that location is talk of information technology coming, but information technology seems that the capital price and low labour costs here may be hindering its wider employ amongst civil contractors.
Just my business is more in the building or structure stake out market, do you see any big changes coming in that field every bit far as replacing surveyors with engineering science ?
I am talking doing layout for cavalcade bases, walls, farms building pads etc, smallish sites that don't employ big earth moving machines.
Is the motorcar control option viable on any size civil'due south chore ? even a pocket-size 100-200m residential road with a few plots hanging off it that demand hush-hush utilities.
Cheers
Posted : September nine, 2013 12:32 pm
Here's one I did the model for, covers nigh 60 acres, oasis't prepare a stake on information technology. two sediment basins for pumping dredged material into. Photo was taken before it was finished, just the slopes berms, and dikes wait perfect from the footing.
Posted : September nine, 2013 12:47 pm
47°27'33.66"N, 122° three'eleven.78"W
I worked on a job hither, a few years agone. They moved 750,000 cubic yards at this landfill, all with machine control. Looks like GE caught information technology somewhere in the heart of construction. I did the topo after and the contours laid right on meridian of design.
ol' Ridge is right; it's coming and you ameliorate get on board.....
Posted : September 9, 2013 one:01 pm
> Looks similar GE defenseless it somewhere in the centre of construction...
Oops, spoke to soon, a second look shows them dumping garbage....
Even so, 750 thousand cubuc yards is a lot of clay to movement; stakelessB-)
Posted : September 9, 2013 5:37 pm
Machine control is past far the best way to practice massive grading...using grade stakes is way to dull. Nonetheless effectually here, sometimes there are simply to many copse auto command for a fifty' wide road. Then nosotros still prepare them.
Posted : September 9, 2013 6:27 pm
> "I wonder how long earlier the machine operators will be eliminated also."
Most contractors in Australia these days utilize MC ( auto control .
You notice either that the site supervisor used to be a surveyor, or that the company only employs i surveyor to maintain their 'fleet'.
I am currently working at a mine site which is switching to MC on haul trucks, drill rigs and trains. In future these volition all be 'driven' past a control center in the nearest Capital City. And then for case 1 person might be able to drive five trains instead of employing 5 train drivers.
Scary times ahead when you lot find yourself slowly spending more than fourth dimension in the role managing machine files than bodily feild piece of work
Posted : September 9, 2013 9:08 pm
No stakes no surveyors!
The function I can't effigy out is the fact that licensed surveyors used to exist employed on a projection equally an contained quality control to be sure the job was done per plan. Now the contractors have their own "surveyors" that are not licensed and are employees of the contractor and are essentially in charge of grade and consequently, material quantities. I oasis't seen an inspector get out a surveying instrument and bank check grade on a projection for 25 years. Nigh inspectors I encounter are fresh engineers in training and have no idea if the project is on grade. I come across contractors making big money from this technology. How hard is it to build the project a couple tenths low or high to aid with quans.
Posted : September 10, 2013 10:55 am
No stakes no surveyors!
The project I'one thousand talking about has in the specs that a licensed surveyor is used to to do the work and had to be qualified and accepted by the owner and engineer. I remember that the contractor probably has one on staff. The final as-congenital survey must be certified by the surveyor. Whether being the contractor'south employee is a problem or not I don't know, how many PLS's will certify something fraudulently for their employer? I don't know I hope not to many. The contract also allows the engineer to have the piece of work independently checked past another surveyor. So peradventure I will become that phone call, probably at most a days piece of work checking a few things for location and grade.
The contractor is responsible that the work be done correctly and be in the right place and on course. How they do that is their business and they'll pay for the errors. I don't have a problem with that!
Topic starter Posted : September 10, 2013 11:25 am
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Source: https://surveyorconnect.com/community/construction-mining/no-stakes/
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