After the threat of spring late last week (temps in the upper 50's) it was actually freezing and snowing when I left to do some GPS work at a local sand pit.
I did most of the Topo work while it was freezing early last week, but I still had to bring NGVD to the site, locate one more monitoring well and just verify that the coverage was adequate.
Here's the site looking south towards Freeman's Way.
You can see the van on the left side mid way up the picture. The GPS base is on the other side of the pit.
Here's a homemade bound that I found. Ol' Roland Mayo set this in '54'. Went out with his daughter Frannie way back in Junior High, early 70's...Funny coincidence.
I found the bound laying on it's side, but after some poking and digging I was able to find the base, so I re-set the bound. There was a nice couple of rocks laying about (coincidence? I think not) so I was able to brace it pretty well with a few big'uns
Banjo was happy when he found it... Good bound sniffing dog!
Don
Don-
We hope Banjo is not bespying a new 'christening' station !
Derek
Derek
That is known as "Marking One's territory", and from the look in his eyes that is EXACTLY what he is thinking.
Andy
Derek
What eyes?
Derek> he didn't
he was just proud of himself for finding it.
Banjo...
:love: Love that name! He's so cute!! He looks like he'd make a great lap dog, too. :dog:
Don,
looks as a lot of climbing was involved for the slopes ...
I still had to bring NGVD to the site
not familiar with the abbreviations, I suppose it's another map projection or coordinate system. What does it take to bring it into NGVD?
chr.
NGVD-29 is an older vertical datum but there are many legacy projects and companies that still require this datum instead of the current NAVD-88 Vertical Datum.
We have a nationwide set of BM's set by the National Geodetic Survey many years ago in one of the most ambitious campaigns. They ran lines across our entire country and have been very valuable to the development of the USA as it grew.
Usually you just tie into one of these marks or other marks that have already be tied to these benchmarks. And I think for many, now they just use OPUS to get their seed elevation.
Job of the Day, Cape Cod style>With Pics>Chris
Like Deral said.... I was lucky to have one state benchmark NAVD 88 (north American Vertical datum of 1988) about 2/10's of a mile away, and two others NGVD (National Geodetic Vertical Datum of 1929) within a mile. I did use the GPS to verify and transfer the elevation, RTK style, or more like differential GPS...
Job of the Day, Cape Cod style>With Pics>Chris
good looking project. we're back to winter here, as well, after two days last week in short sleeves.
sorry to hear you won't make it to b-more this spring. you're welcome to stop in/by/through any other time, though.
Is that a sand pit or a cinder pit? I'm assuming either way it is used to put on icy roads? JRL
Job of the Day, Cape Cod style>With Pics> GunMan
It's a landscaping pit with sand, mulch and loam. There are several hundred yards of underground stump dumps that are being excavated and screened for loam.