Quickly review the שולחן ארוך או”ח ס’ שס”ב סעיף י and the משנה ברורה
Clarify:
How does the Shulchan Aruch rule in regards to
A צורת הפתח on an opening wider than 10 Amos?
Openings which are פרוץ מרובה which are less than 10 Amos wide?
Openings which are פרוץ מרובה which are wider than 10 Amos?
Is an עירוב constructed entirely from צורת הפתח from all four sides valid?
Learn ביאור הלכה “אבל בבקעה” & “כשכל
Learn גמרא דף יא: “גופא (tenth wide line) until “אשכחיה רב ששת ” (seven lines before the next Mishnah)
The gemara lists three halachos in regards to a צורת הפתח
1. The strength of the צורת הפתח
2. Requirement to have a היכר ציר – a hole to place the peg for the door
3. Whether the side posts need to extend all the way until the horizontal cross beam/string
How do we rule l’halacha?
Learn שולחן ארוך או”ח ס’ שס”ב סעיף יא
Why doesn’t the Shulchan Aruch require a היכר ציר as the gemara states this requirement without any opinions who disagreed?
Learn משנה ברורה ס”ק ס – סג and ס”ק סו
Why is the top string have a leniency over the side posts?
Learn שולחן ארוך או”ח ס’ שס”ב סעיף יא and the משנה ברורה ס”ק ס – סג and ס”ק סו
Here are the 3 pages in the Mishnah Berurah that are referenced in the shiur:
https://hebrewbooks.org/pdfpager.aspx?req=60389&st=&pgnum=53
https://hebrewbooks.org/pdfpager.aspx?req=60389&st=&pgnum=54
https://hebrewbooks.org/pdfpager.aspx?req=60389&st=&pgnum=55