Welcome to the Judaism community on Codidact!
Will you help us build our community of learners? Drop into our study hall, ask questions, help others with answers to their questions, share a d'var torah if you're so inclined, invite your friends, and join us in building this community together. Not an ask-the-rabbi service, just people at all levels learning together.
Post History
In the movie Dredd (and in the comic books) the cities have huge apartment buildings in them which serve as mini-cities on their own (called "blocks" I think). Vast numbers of people can live in on...
Question
eruv-chatzerot
#1: Initial revision
How big a building can be included in the eiruv?
In the movie Dredd (and in the comic books) the cities have huge apartment buildings in them which serve as mini-cities on their own (called "[blocks](https://en.wikipedia.org/wiki/Mega-City_One#:~:text=Mega%2DCity%20One%20is%20a,and%20artist%20working%20the%20story.)" I think). Vast numbers of people can live in one building. Could a "block" be enclosed in a larger eiruv or is there a maximum sized building that can be included in an eiruv? Why a Dyson Sphere make everything enclosed in it within an eiruv?