Several months ago we finished a huge 2.5 mile urban corridor project that includes several Interstate highway crossings, existing R/W determination and preparation of documents for new R/W. I couldn't tell you how big the collection files and dgns were that we turned in.
Anyway, the client contacted me this morning. Seems as though we missed one light pole:
I don't guess it's really a big deal, but the client (utility company) is really more interested in vertical obstructions as compared to buried obstructions. It wound up in their vertical clearance zone.
Oh well, I got my butt chewed, so the crew got their butts chewed. Live and learn.
Street view is cool. I wish it would be updated.
We catch some of those things with pictures. You probably know that already.
On the face of it that's a bad one to miss, but sometimes the overhead stuff can be hard to remember.
After so many years of looking down, it's hard to get a surveyor to look "up".
Funny thing about this light pole...there are 5 water valve boxes and a traffic signal pull box (not to mention the curb and gutter shots in the parking lot) within ten feet of this pole...but no shot on the pole.
We also do vertical clearance with a reflectorless TS on all the high utility structures after the topo. We missed it there, too.:pinch:
yep- been there and done that- I end up going back on the ground with hard copy in hand to field verify what has been tied/drawn prior to submittal of the deliverable.
I know a crew that called a 72" CMP in DC but it was actually a double barrel 72" CMP instead, and this was in the topo for design phase of a huge shopping center.
Fast forward till getting ready to stake curb and gutter, a contractor spotted the error, yep that will affect the hydrology plan and the entire site design.
Oops...
I have always used ortho photo for strip projects or most industrial/commercial/retail sites larger than a few acres. Particularly R/W surveys of more than a mile. Fill them in with conventional under trees as needed.
But the lesson for the LS/PC is important. Take the time to note and pick up 100% of the obvious and apparent. The other thing I do, when the map is ready for final review, is walk over the site with map in hand and look for errors or ommissions. The PC can do this, or even a savy survey tech. Just check off each symbol. No more than a round of golf's labor to add value.
A review of procedures and corrections is called for in every case an error or omission is confirmed. Working too fast by skipping along is every bit as bad as dragging your feet and wasting time on site. Unhurried haste is how one of my mentor's put it.
> yep- been there and done that- I end up going back on the ground with hard copy in hand to field verify what has been tied/drawn prior to submittal of the deliverable.
Yep, just did one of those yesterday....
Someone else did the initial field work, someone else did the cad. Another set of eyes helps....
If we didn't make mistake's we wouldn't be doing anything; live and learn; what doesn't kill us, makes us stronger.....
You'll do better next time:-D
If you don't screw up once in awhile....you're not trying hard enough.
One word
Scanner
Will never miss a thing again. Its not that expensive once you realize its potential.
2.5 miles would probably make Mobile Mapping feasible.
Maybe it really wasn't there when you did your work. Ever think of that?
Looks like Reno and Eastern.:-/
It is..
Reno & Eastern...errr..I mean Martin Luther King Blvd.
Which one of the 17 iron pins, magnails and PKs in the intersection did you use?
It is..
As I recall, I used the correct one, just before another trip to the Iron Skillet at the Petro truck stop, the best chicken fried steaks bar none.
All topo jobs get a "topo edit" walk through on the ground by a staff member not a part of the original survey party a day or so after the field work is done and a cad printout is available.
9 times out of 10 when I leave something out of a topo it's not because I didn't see it, but rather because while locating the other features in the immediate area I make a mental note to go back to that one, and then forget to do so. It usually happens in a densely-built environment that doesn't lend itself to an orderly progression through the features. I almost always discover the omission during the field check of the plotted topo, but I'm sure there have been some skipovers that were never caught.
Yes you will.
You'll have the data, sure, but the client won't be able to use clouds, and you'll miss stuff when extracting survey strings. Typically not light poles though, usually low, flat objects like service covers.
Having a scanner doesn't decrease the amount of checking a project requires. In some cases it makes it harder.
On that note--an eon ago I was locating sanitary sewer for a new sub-division development connection. Popped the lids (which were in the center of a county road, traffic and all that) lowered the rod for the invert recorded data closed lids. Well I missed an invert that was hidden at the joint of the precast M.H. that you can't see unless you go inside. Turns out it was an outside drop M.H. Contractor thought he had to excavate to 15 feet deep for the doghouse M.H. but found pipe run at 4.5 feet. A little tail between the legs and not too much re design--it all flowed downhill. Always look for them now when the inverts are deep.
Live and learn from experience.
