7

The Shulchan Aruch rules (OC 362:3) that a mechitza which came into being by itself counts as a mechitza at least for areas less than the amount of land you could plant 2 sa'ah of grain on (much bigger than your average backyard). So clearly at least for small areas like your backyard, the details of the mechitza's identity do not matter. Furthermore, I ...


6

No. The Mishna in the Gemoro Eruvin 81b that you cannot make a (positive) eruv techumim for another person without his knowledge because he loses something from it (viz. the ability to walk in in the opposite direction to the Eruv) as Rashi says חוב הוא לו שמפסיד לצד האחר ושמא אינו נוח לו: I infer that all the more so, one cannot make your postulated "...


6

There isn't a difference in construction. The difference is that Sepharadim (traditionally) do not accept communal 'Eruvin in large cities/neighborhoods, due to the position of the Mehaber (Shulhan 'Aruch O"H 345:7) that defines* a public domain by size, not by population density. Some Many Sepharadim have accepted the Ashkenazi leniency in following the ...


6

Eruvin 1:10 is actually talking about a different kind of mechitzah, one based on the halachic principle of lavud (where objects within three tefachim of each other are considered joined). So the case there is that they place vertical stakes in the ground, each within three tefachim of the next. (The previous mishnah describes the opposite case - where they ...


6

The document shows a nail in a post, but what I've often seen used in eruvin (I assume for convenience) are eye bolts like these: (picture from Wikipedia)


6

In your question you assume there was an eruv in Yerushalayim, and therefore find it difficult to understand why they would not carry the Korban Pesach home until night, and why they would bring the 4 minim before Shabbos. However, it is clear from the Gemara Eruvin 101a that no eruv was made in the streets of Yerushalayim. Rav Moshe Feinstein [in Igros ...


5

Anything that would be useful for use on shabbos you can carry within an eruv (if you follow the local eruv) The Greater Boston Eruv Corporation's "Halakhot of Eruv" page has a section on the limits of Eruv use including the following three main points: Even within an Eruv, one may not enter non-Shabbat-compatible buildings (e.g. stores) on Shabbat. Even ...


5

Harav Shlomo Zalman Auerbach paskens quoted in Meor HaShabbat Peninei Homer 3:8 in regards to opening up bottle caps (which some are makpid not to open on Shabbos) if one may open it for someone else who is makpid not open them. Rav Shlomo Zalman says that it depends on whether the one abstaining from opening it does so because they hold that it is ...


5

From my notes: עירובין משניות in עירובין – The תנאים were careful to make sure that there were parts of their city where there was no עירוב so it would be אסור to carry in order to make sure that people would not forget that there is an אסור to carry on שבת. מרדכי – Every רב and every Jewish leader should make sure there is an עירוב in his city. תשובות רא"...


5

R Moshe Feinstein (Igrot Moshe OC 1:139:6) rules that according to the Ritva and Ramban the maximum size of a Reshut HaYachid (and hence the maximum size of an Eiruv) is as far as the eyes can see, which he understands, based on Bechorot 54b, to be 16 mil in either direction which would be 32x32 mil which is roughly 1000 km^2 or 250K acres. (For reference ...


5

An opening is not considered a breach if it is either less or equal to 10 amos or (SA OC 362:9) is set up as an opening with (minimally) 2 posts and a crossbar or as a gated structure (OC 362:11) However, the entire enclosure must not be mostly open (OC 362:9) (with the exception of eiruvei tzuras hapesach, see below) and the walls must be defined (you ...


4

Every aspect? It doesn't exist, sorry. There's an entire tractate of the Talmud one of whose two main topics is this kind of eruv. Plus all the commentaries on that tractate, law codes, commentaries on the codes, and so on. I'm sure there's no article that covers it all.


4

Most city Eruvin use Matza as the food because it doesn't spoil quickly (Rama OC 368:5). There must be at least 6 (some say 8) eggs' worth of Matza, unless there are less than 18 people in the city in which case there needs to be one dried fig's worth per person (Sh"A OC 368:3). The Matza must belong to everyone. If one person wants to donate Matza to ...


4

Halachipedia says: Definition of the 4 domains There are 4 categories of domains on Shabbat: the Reshut HaRabim (public domain), Reshut HaYachid (private domain), intermediate area (Karmelit), and exempt area (Makom Patur). A Reshut HaYachid is defined as an area of at least 4 Tefachim by 4 Tefachim surrounded by walls of at least 10 ...


4

We live in a square made up of 8 buildings with 4 entrances. We have doorposts connected by a string at every entrance, as an Eruv. When a neighbour - some 15 years ago - made a bris at home and invited Reb Chaim Kanievsky שליט"א to be Sandek, he noticed this. He paskened that we need a Mezuza at each entrance. As a result we replaced the string with a ...


4

In the positive integer number of Eruvin that I've seen, the Eruv excludes uninhabitable and purposeless land (such as cemeteries and bodies of water) from its boundary by encircling that land with another internal set of strings, poles and fences.


4

If the majority of the enclosure is gaps, it is invalid unless each gap is less than 3 tefachim wide. (OC 362:8) If the total amount of wall is greater than or equal to the total amount of gaps, it is kosher provided that there is no gap of more than 10 amot which is not closed using a tzurat hapetach (lit: form of an opening, it is two vertical posts with ...


3

I would first recommend using as much in place powerlines fences etc as you can. THe less conspicuous the better. My experience has been that 50-75 lbs test fishing wire works great. The fishing lin is non conductive so you dont have to worry about lightning strikes, interference with power lines etc. It is also somewhat stretch which is good for ...


3

The Far Rockaway/Lawrence, NY Eruv http://www.shaaray-tefilah.org/eruv.pdf contains the route of I-878. However they did build a Mechitza on the Far Rockaway side of the road for those in FR who are Machmir.


3

1) See shulchan Aruch end of Siman 416 that Yom Kippur also requires an Eiruv and it is valid (and we all know that we won't be able to eat it at all on YK!), I think that YK would be a stronger question. 2) In Shulchan Aruch HoRav 386:8 he writes משתתפין אפילו באוכל שאינו ראוי לו אם ראוי לשום אדם מישראל, now since Min Hatorah a child is allowed to eat on ...


3

The Mishna Berurah here 362 s.v. 64 quotes a number of tshuvos that discuss telegraph wires. He does not write what they say, but he does say see there, implying you should rule with those opinions. You will find they all did not allow it for the issue you mention. Sho'el Umeishiv also addressed the fact that the tzuras hapesach was not made specifically ...


3

Yes, an eruv boundary must be physical, though gaps are allowed to an extent. You said the signs were on telephone poles: likely, the telephone poles and wires themselves (or possibly other, tauter wires attached to the poles) served as part of the eruv boundary.


2

HaMaor Volume 33:3 page 24 - Rabbi Shmuel Singer asks this question and says that since the Rama 471:2 indicates that a minor can eat Matza therefore you can make this Eruv.


2

It would depend on the exact dimentions of the barrriers. For Natural Topagraphy be considered a Mechitza, It would have to rise 10 tefachim in a span of 4 Amos. (mishna berura siman 363) (about 12% grade, if i remember my calculations correctly). To make a Mechitza for a whole town you would have to establish that there is a ring of natural mechitzos, ...


2

Being in this exact scenario, I asked my Rav this same question about two years ago. His answer was that, since my friend relied upon our 'eiruv, his carrying from reshut to reshut on Shabbat on my behalf is permissible. He added that, just because I hold that our 'eiruv should not be relied upon, does not forbid his carrying on my behalf - because according ...


2

I’m not familiar with such a discussion, but I see no reason why it would be applicable. As far as I’m aware, the three discussions you cite - Menorah, Sukkah, and Koreh - are the only ones where 20 Amos applies, so let’s go through them one by one. I’ll address them out of order, and you’ll see why shortly. Sukkah The Gemara on Sukkah 2a poses a three-...


2

The Badatz Eruv is quite smaller that the Rabbanut Eruv in the link provided by mbloch, primarly serving chareidi areas. VERY general boundries/areas in the Badatz eruv: (Counter-clockwise) Ramot, Ramat shlomo, Ramat Eskol, French Hill, Sderot Bar Lev, The Old City, Mamilla, king George, Sharei Chesed/Rechavia, Does not include any part of Gan Sacher or ...


2

Rabbi Hassan describes the problem here: Now is there a problem for Sephardim? This is a complicated area of halakha but I will try and write as short and as clear as possible. Rav Yosef Caro (Shulkhan Arukh O.H. 345:7) wrote that the definition of a public domain is a street that is 16 amot wide (32 feet) or more that are not enclosed. Some say ...


2

Excellent question: The answer is at the end of this post. The first part may help to introduce the topic. The mishna statued in several points that hole is as a doorway, more than 10 amot,the wall is kicked and annulled on this area. See Mishna daf 15b פירצה שהיא כעשר אמות מותרת מפני שהיא כפתח יתר מכאן אסור:‏ any gap which [in its width does not ...


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