When three ruins lie between two courtyards in a tripod/segol arrangement (middle ruin is adjacent to both courtyards), what is the status of the middle ruin?

When two courtyards share a pit and have not made a joint eruv, what partition arrangement is required to permit drawing water from it on Shabbat?

3 opinions

Does the requirement for a partition arrangement apply when filling the shared pit using vessels that spent Shabbat in the courtyard (as opposed to vessels from the house)?

3 opinions

May a beam four handbreadths wide placed over the mouth of the pit substitute for a full partition to permit drawing water from a shared pit?

4 opinions

When a well sits in a pathway between two courtyard walls and residents draw via windows (not direct entrances), do they need any arrangement to permit drawing on Shabbat?

5 opinions across 3 eras

When three ruins lie between two courtyards in a linear arrangement, which ruins may each courtyard resident use on Shabbat?

4 opinions across 3 eras

Is an outhouse situated between two houses that have not made a joint eruv forbidden to both parties?

3 opinions across 3 eras