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Lost my touch

Discussion in 'Surveying & Geomatics' started by clearcut, Sep 13, 2017.

  1. clearcut

    clearcut 7-Year Member

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    Spent better part of 2 days in San Francisco. While walking around the skyscrapers I couldn't find a single property monument. I did find a few pk nails, 2 crosses sawn into he sw and a couple of municiple bm's, but not a single LS stamped tag or cap. I must have lost my ability to locate corners 'cause I cannot imagine such high value propery to be completely uncontrolled.
     
    Brad Ott likes this.
  2. flyin solo

    flyin solo 3-Year Member

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    Ain't the buildings controlling themselves?
     
    Jim in AZ, Tom Adams and Peter Ehlert like this.
  3. Nate The Surveyor

    Nate The Surveyor 7-Year Member

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    You would not believe what else those san fran ciscans do.
    They have lost more than the old landmarks...
     
    Rick Taylor and Monte like this.
  4. Jim Frame

    Jim Frame 7-Year Member

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    A lot of SF boundaries are marked by +, L or T cuts on curbs, or crow's feet on building corners. Until fairly recently, the requirement to tag monuments was widely ignored.
     
  5. Andy Nold

    Andy Nold 7-Year Member

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    I was in S.F. this past weekend for the Municipal Transportation Authority's Heritage Festival. Got to see a lot of old transit and my ride on the Powell/Hyde line took me past the location where they were filming The Antman sequel. I noticed a cross cut in concrete sidewalk and a cast iron monument vault but I didn't shoot any pictures of monuments or try to open the vault lid.

    [​IMG]
     
  6. LA Stevens

    LA Stevens 6-Year Member

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    The "L" signifies the parcel that was being surveyed. When the next surveyor comes and surveys the parcel next door they would add the cut to make a "T" to signify both of the parcels had been surveyed in the past. The historical survey archives from the late 1800's and 1900's show this occurring.

    I believe the crosses were set later for the property line extensions to the TC.
     
    Andy Nold likes this.
  7. Andy Nold

    Andy Nold 7-Year Member

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  8. Tom Adams

    Tom Adams 4-Year Member

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    If the building is zero-offset to the property line, might building corner itself might be the property corner. (?) Maybe the PLS should stamp his number in the face of the building by the corner.
     
    Trundle likes this.
  9. MightyMoe

    MightyMoe 6-Year Member

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    I was in NC a few weeks ago and would walk by this one most mornings.
    It would be a monument that would last probably till January here, but I guess it's SOP out there to set them:

    us.jpg

    Made me wonder what dept does these surveys, out west of course I usually deal with the BLM or USFS.
    This is at a Federal Courthouse.
     
  10. flyin solo

    flyin solo 3-Year Member

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    that would be the department of cheap nationwide ALTAs: http://www.ussurveyor.com/

    btw- i can leave my desk right now and in about 10 minutes walk by about 3 dozen of kent's mags and shiners that have been in place for decades. (texas concrete, like everything else here, apparently works better than everyone else's...)
     
    Last edited: Sep 13, 2017
  11. MightyMoe

    MightyMoe 6-Year Member

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    Their ad would trigger SWMBO.

    "Do you know where we survey at"

    Fingers on the chalkboard.

    I figured U.S. Surveyor was some eastern version of the government surveyors I know. Guess not!!!!
    And a Federal Courthouse:(
     
    Jerry Hastings and flyin solo like this.
  12. flyin solo

    flyin solo 3-Year Member

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    hahahaha. good thing your SWMBO and my SWMBO aren't acquainted. (drives me nuts too and is a minor source of stress in our house. because, you know- i don't have any quirks that might be irritating to her.)
     
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  13. Trundle

    Trundle 1-Year Member

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    I am not sure how it works in San Fransisco, but in Seattle the downtown properties are all referenced by centerline monuments. Once you connect the CL's and offset the rights of way, you divide the lots per plat. Since almost all the skyscrapers downtown are zero offset, the centerline monument IS also the property line monument.

    I assumed that is how it was done in the downtown area of all major cities.
     
  14. James Fleming

    James Fleming 7-Year Member

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    I like the 800 number on the "monument"...stay classy San Diego
     
    Trundle likes this.
  15. flyin solo

    flyin solo 3-Year Member

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    i will say this: relative to the egg basket of national cheapo firms that do surveys i review on a regular basis, this guy's stuff is reliably pretty good. how that operational model works is beyond me, but he clearly actually has crews on the ground (as evidenced by moe's picture). i'm dead serious when i say that i suspect a number of these firms are doing google earth surveys.
     
  16. Trundle

    Trundle 1-Year Member

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    US Surveyor as contacted my boss before to sub-contract out all the fieldwork (and research).
    I would assume he probably does that on a regular basis in various states.
     
  17. MightyMoe

    MightyMoe 6-Year Member

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    Just doing the eyeball thing the monument looked well placed.

    I saw a few other ones in the area, old buildings, zero lot lines, I'd imagine it's not too difficult to survey in that downtown area.

    But then again, I have no local knowledge.

    It a bit of a shock to see that kind of monument being used, a six month lifespan from what I'm used too.
     
  18. flyin solo

    flyin solo 3-Year Member

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    that's what i figured too- just not sure how anybody pays rent in that scenario.
     
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  19. James Fleming

    James Fleming 7-Year Member

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    Yup...take a plat from the 1930's, find some corners set last year a couple of hundred feet away, project the plat dimensions up the street, and call a seventy year old building 0.16' over the property line. see it all the time, easy peasy.
     
    RADAR likes this.
  20. MightyMoe

    MightyMoe 6-Year Member

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    I have to stop, I looked up the deed, it references a tax lot, an older book and page, but no where does it reference the plat. Then there is a metes and bounds description inserted that basically described the entire block which I presume is the block of an old plat in the city center. The deed also references an ALTA survey.

    Here the deed would just say Block X of Plat Y and that would be it. You could file a ROS or even an exhibit plat attached to the deed, but I not metes and bounds of lots and blocks; and a Tax # in a deed?

    Every place is different I guess.

    Looks to me like he did a fine job, he calls out ties to monuments in the area outside his survey, basically he puts the map in his legal.
     

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