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10' 1" Under Sidewalk

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Jim Frame
(@jim-frame)
5,000+ posts Member

Note on an 1897 plat.  I'm having a hard time envisioning the circumstances under which this came to be.

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Topic starter Posted : September 29, 2021 8:25 am
4site, FL/GA, Hblair and 2 people liked
Norman Oklahoma
(@norman-oklahoma)
5,000+ posts Member

Is that a water frontage? Monument  1" below natural ground then 10 feet of fill brought in.

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Posted : September 29, 2021 8:31 am
Drew R
(@drew-r)
100+ posts Member

Better get Bill out there with his metal detector.

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Posted : September 29, 2021 8:35 am
FL/GA, RADAR, Richard Imrie and 1 people liked

David Kendall
(@david-kendall)
100+ posts Member

Wasn't the entire downtown Sacramento area raised up to that degree after flooding?  What is the map location?

Very thankful that he specified the 1" if I have to dig that up

This post was modified 2 months ago by David Kendall
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Posted : September 29, 2021 9:27 am
Jim Frame
(@jim-frame)
5,000+ posts Member
Posted by: @norman-oklahoma

Is that a water frontage?

Yes, the Sacramento River is at the bottom of the image. I can maybe understand how the monument got buried that deep, but I'm having a hard time believing that anybody dug it up without benefit of a backhoe and with a sidewalk on top of it.

Posted by: @david-kendall

Wasn't the entire downtown Sacramento area raised up to that degree after flooding?

Much of it, anyway.  But this is on the other side of the river, in what used to be the Town of Washington (now part of West Sacramento).

 

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Topic starter Posted : September 29, 2021 12:02 pm
David Kendall
(@david-kendall)
100+ posts Member

@jim-frame Sidewalks of that era were typically wood decks.  Make sense now?

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Posted : September 29, 2021 12:08 pm

Jim Frame
(@jim-frame)
5,000+ posts Member
 
Posted by: @david-kendall

Make sense now?

Digging down 10 feet (and an inch!) doesn't make sense to me, especially given the location, the era and the surveyor. (I've retraced quite a bit of his work, and it's generally pretty good, but not generally heroic.) There must have been something unusual about the conditions at the site to warrant the peculiar recovery.

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Topic starter Posted : September 29, 2021 1:09 pm
MightyMoe
(@mightymoe)
5,000+ posts Supporter

The wooden walkway was elevated 10' in the air snd the notation was a measure down?

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Posted : September 29, 2021 1:13 pm
David Kendall
(@david-kendall)
100+ posts Member
Posted by: @jim-frame

I've retraced quite a bit of his work, and it's generally pretty good, but not generally heroic.

LOL

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Posted : September 29, 2021 1:34 pm

RADAR
(@dougie)
5,000+ posts Member

@jim-frame 

did you find anything?

Maybe he inadvertently added a 0 and it's 1' 1" below the "sidewalk"

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Posted : September 29, 2021 1:37 pm
Jim Frame
(@jim-frame)
5,000+ posts Member
Posted by: @dougie

did you find anything?

It doesn't affect the block I'm working in, so I didn't look for it.

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Topic starter Posted : September 29, 2021 1:55 pm
RADAR liked
Larry Best
(@larry-best)
500+ posts Member

Maybe from previous work he believed it to be there. But the depth to the inch implies he saw the gun barrel and the sidewalk at the same time. 

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Posted : September 29, 2021 2:21 pm

Lurker
(@lurker)
200+ posts Member

So a distorted version of Occam's Razor leads me to believe the sidewalk was raised with access beneath it so that the gun barrel was reasonably easy to recover and easy to measure up to the sidewalk above.

Or alternatively, he carried trig elevations on all of his work and when he went to stake this point out again he got a cut 10.08'

Did they do stake out in the late 1800's?

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Posted : September 29, 2021 2:32 pm
holy cow
(@holy-cow)
10,000+ posts Member

My vote is with MightyMoe.  At the time, the gun barrel was directly below the raised span of the sidewalk that may have been part of some sort of extensive deck along the bank.

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Posted : September 29, 2021 2:33 pm
corey f liked
Williwaw
(@williwaw)
1,000+ posts Member

@jim-frame Sort of begs the question if you were working in this block and your survey might hang on it's location, would you look for it knowing how deep it is?

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Posted : September 29, 2021 3:24 pm

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