Translation:Mishnah/Seder Moed/Tractate Eruvin/Chapter 1/3

Introduction
One of the methods of making an eruv in certain mavois (alleyways) is to erect a korah across the entrance. A korah is essentially a beam that must fit to certain specifications. This mishnah will begin to enumerate the physical dimensions necesary for a korah to be valid.

Hebrew Text

 * קורה שאמרו, רחבה לקבל אריח; והאריח, חצי לבינה של שלושה טפחים.
 * דייה לקורה שתהא רחבה טפח, כדי אריח לאורכו.

Explanation
According to this mishnah, a korah must be at least one tefach wide. Other issues relating to the korah will be addressed in later mishnas.