Does a walled city with gates and doors (fully enclosed) have its eruv prohibition against splitting apply only when its entire perimeter is valid as mechitzot, or also when only part of the city is validly enclosed?

Can a city that was originally private property (owned by one individual) be included in a single city-wide eruv without any exclusion?

4 opinions

Does a publicly-owned city with only one entrance require an exclusion (shiur) for a valid city eruv?

3 opinions

Does a publicly-owned city with two entrances (through which the public enters one and exits the other) require an exclusion (shiur) for a valid city eruv, even if it later became private property?

4 opinions across 3 eras

What is the minimum valid exclusion (shiur) for a city eruv when an exclusion is required?

4 opinions across 3 eras

Can houses excluded from a city eruv (as the shiur) qualify even if their entrances face outward (away from the city) or if they are animal/storage buildings that themselves don't require an eruv?

2 opinions

Can non-Jewish houses count as the required exclusion (shiur) for a city eruv?

4 opinions across 3 eras

Does a ladder (on the city wall) on one side count as a 'second entrance' that would require a shiur for a city eruv?

3 opinions

Does a garbage heap (ashpah) in front of one of a city's two entrances render that entrance legally non-existent, so that the city can have a single eruv without a shiur?

3 opinions