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Its worth mentioning that Manhattan, while massively larger than Los Angeles population wise, is dwarfed by the LA Eruvin which extends to cover 100 square mile

Its worth mentioning that Manhattan, while massively larger than Los Angeles population wise, is dwarfed by the LA Eruvin which extends to cover 100 square miles. AFAIK it is the largest eruv in America. https://jewishjournal.com/news/los_angeles/community/6241/ https://jewishjournal.com/news/los_angeles/community/6241/ Both the NYC and LA Eruv have realtime updates for status that are taken as seriously as datacenter uptime. You can call virtually any Schul/temple in the Eruv to know its immediate status from a rabbi. http://eruv.nyc/ http://eruv.nyc/ https://www.laeruv.com/ https://www.laeruv.com/ devout jews dont so much as pick up a house key without knowing the Eruv status, while some not-so-devout will intentionally avoid knowing its status as this isnt technically considered breaking the mitzvos.

jrochkind1 7y ago
> You can call virtually any Schul/temple in the Eruv to know its immediate status from a rabbi. > ...devout jews dont so much as pick up a house key without knowing the Eruv status Well, except, the only time you need to know the status of the eruv is on shabbat (the sabbath), and if you are someone who needs to know the status of the eruv on shabbat, you are also not going to use a phone or computer on shabbat, so. Perhaps you might check the status just before shabbat. But surely you are exagerating at least somewhat. (I personally was aware of eruvim but was not aware there was a way to check it's status based on monitors, and personally have no idea how popular it is to do so. I just know nobody's making a phone call to check eruv status before picking up their keys on a Saturday morning!). The NYC eruv status web page (http://eruv.nyc/ http://eruv.nyc/) currently says "Last Checked: 1/2/2020", so I believe you were exagerating somewhat to say "immediate" status as well. It does say "It features an announcement each Friday about the status of the eruv" -- so it sounds like, yup, check it Friday afternoon before the sabbath starts, and that's the only time it's updated too cause nobody has any reason to check it any other time, okeydoke.
- meddlepal 7y ago
  I'm curious how they check the entire system?
  - subpixel 7y ago
    Sponsorship: https://www.laeruv.com/sponsor-a-week/ https://www.laeruv.com/sponsor-a-week/
  - jrochkind1 7y ago
    I would imagine they travel around the perimeter just making sure it is intact!
  - jrochkind1 7y ago
    > Every Thursday before dawn, a rabbi drives the perimeter, checking to see if wind or a fallen branch has broken the line. There are usually a few breaks, so a construction company is called and the rabbi gets in a cherry picker with fishing line in hand to repair the eruv. That's the part that costs so much. https://www.npr.org/2019/05/13/721551785/a-fishing-line-encircles-manhattan-protecting-sanctity-of-sabbath https://www.npr.org/2019/05/13/721551785/a-fishing-line-enci...

jrochkind1 7y ago

> You can call virtually any Schul/temple in the Eruv to know its immediate status from a rabbi. > ...devout jews dont so much as pick up a house key without knowing the Eruv status Well, except, the only time you need to know the status of the eruv is on shabbat (the sabbath), and if you are someone who needs to know the status of the eruv on shabbat, you are also not going to use a phone or computer on shabbat, so. Perhaps you might check the status just before shabbat. But surely you are exagerating at least somewhat. (I personally was aware of eruvim but was not aware there was a way to check it's status based on monitors, and personally have no idea how popular it is to do so. I just know nobody's making a phone call to check eruv status before picking up their keys on a Saturday morning!). The NYC eruv status web page (http://eruv.nyc/ http://eruv.nyc/) currently says "Last Checked: 1/2/2020", so I believe you were exagerating somewhat to say "immediate" status as well. It does say "It features an announcement each Friday about the status of the eruv" -- so it sounds like, yup, check it Friday afternoon before the sabbath starts, and that's the only time it's updated too cause nobody has any reason to check it any other time, okeydoke.

meddlepal 7y ago
I'm curious how they check the entire system?
- subpixel 7y ago
  Sponsorship: https://www.laeruv.com/sponsor-a-week/ https://www.laeruv.com/sponsor-a-week/
- jrochkind1 7y ago
  I would imagine they travel around the perimeter just making sure it is intact!
- jrochkind1 7y ago
  > Every Thursday before dawn, a rabbi drives the perimeter, checking to see if wind or a fallen branch has broken the line. There are usually a few breaks, so a construction company is called and the rabbi gets in a cherry picker with fishing line in hand to repair the eruv. That's the part that costs so much. https://www.npr.org/2019/05/13/721551785/a-fishing-line-encircles-manhattan-protecting-sanctity-of-sabbath https://www.npr.org/2019/05/13/721551785/a-fishing-line-enci...