Study Eruvin folio 78A with parallel Hebrew-English text, traditional commentary, and modern study tools. Free access to Babylonian Talmud online.
If a projection 4 by 4 handbreadths in area extends from a wall, and one placed a ladder of any width against it, if the rungs of the ladder are less than 3 handbreadths apart, he has diminished the height of the wall by means of this ladder and projection.
The Talmud qualifies this statement: And we said this only in a case where one placed the ladder directly against the projection, so that the ladder serves as a passage to it. However, if he placed it adjacent to the projection, he has merely widened the projection, while the ladder remains separate
And Rav Naḥman said that Rabba bar Avuh said: If a wall between two courtyards is 19 handbreadths high, it requires one projection to render the use of the wall permitted. If there is a single projection in the middle of the wall, with a ladder of any width resting against it, it is considered a p
However, if the wall is 20 handbreadths high, it requires two projections to render the use of the wall permitted, one within 10 handbreadths of the ground, and the other within 10 handbreadths of the top of the wall. Rav Ḥisda said: And this applies only where he positioned the projections not dir
Rav Huna said: If a pillar in the public domain is 10 handbreadths high and 4 handbreadths wide, so that it is considered a private domain, and one drove a stake of any size into the top of it, he has diminished its area. The usable area is now less than 4 handbreadths, and therefore the pillar is