Bill93, post: 452296, member: 87 wrote: Probably not too unusual, but this is what yesterday's session needed, and a first for me.
The disk is down there beside the Gammon reel. Notice the 1910 date cast into the concrete, I suppose when the railroad was put in. The tracks have been gone for decades now and in some areas the route is hardly discernible.
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The date on the bridge is more likely the date the bridge was constructed. Same with date nails in the crossties. The Texas and Pacific in my home area has a lot of pretty concrete culverts with headwalls dated 1932 when they did a lot of track improvements although the line originally was constructed around 1881/1882.
Edward Reading, post: 452223, member: 132 wrote:
Can anyone explain exactly what is going on here?
Is it a scan?
i have become flummoxed looking at the picture.
photo control probably
Scanning interstitial space of a hospital.
Two odd setups. One being on the vertical face of a boulder (bearing rock). The second being a mineral survey stone corner in the lower right of the photo that I had some difficulty getting to and esp. holding the rod plumb without tumbling down the hill.
Had to wedge a small rock in the crack for one tripod leg.
The bearing rock (upper left) was even more precarious to get a shot on.
Edward Reading, post: 452314, member: 132 wrote: Scanning interstitial space of a hospital.
Putting targets on the ceiling grid?
Dave Karoly, post: 452319, member: 94 wrote: Putting targets on the ceiling grid?
Yes, transferring control up through the ceiling from scans in the room. It's not fun, plus you have to do it in the middle of the night.
Andy Nold, post: 452309, member: 7 wrote: when they did a lot of track improvements
You're right. The culvert must be an upgrade. The 1875 atlas shows the line existing then.
These illustrate the way we surveyors adapt to conditions.
But instances above are static setups.
The next challenge is when such a setup involves an EDM, TS, Jigger, whatever you know it as, and actually practice contortionist movements whilst reading back and fore.
Probably explains some of the acquired aches and pains from acting like a corkscrew too many times.
Great posts. Keep 'em coming
Here's a slanted setup I had back in Oct 2011. These are the ones you have to contort yourself to get the shots without bumping the gun.
