Transporting between properties bordering a joint alley

Please note that a "Tzurat haPetach" is the form of an entranceway, a "Lechi" is a vertically-placed beam, and a "Korah" is a crossbeam.

Links

Defining an AlleyGaps in the WallsDefining a "Tzurat haPetach" - the form of a Doorway, used as part of converting an alley into a private propertySpecifics of a Lechi - A Vertical beam of a Tzurat haPetachSpecifics of a Korah - The Crossbeam of a Tzurat haPetachThe Type of Alley which may benefit from a Tzurat haPetachUse of an alley enclosed by a Tzurat haPetach