Review the גמרא דף ו. “ורב חנן בר רבא (middle of the Amud) until the two dots (six lines from bottom of the Amud)
Clarify what case רב הונא agrees the size of פירצה on side wall could be 10 Amos.
What is the explanation for the different circumstances that affect the allowance of the size of פירצה on side wall
Questions:
Why does בקעי בה רבים decrease the allowance for the opening?
See משנה ברורה שס”ה ס”ק י, שעה”צ אות ח for three reasons
https://hebrewbooks.org/pdfpager.aspx?req=60389&st=&pgnum=72
Why does גדודי allow the opening to be larger?
How does one fix a Pirtzah on the side?
See רשב”א דף ה: “מבוי
https://hebrewbooks.org/pdfpager.aspx?req=37275&st=&pgnum=8
Does Rav Huna argue on Rav Ami and Rav Assi?
See רמבם ה’ שבת יז, יז and מגיד משנה
https://hebrewbooks.org/pdfpager.aspx?req=14278&st=&pgnum=75
See רא”ש סוף ס’ ז
https://hebrewbooks.org/pdfpager.aspx?req=14312&st=&pgnum=214&hilite=
A Pirtza in the front of the side wall corner is only allowed to be 3 tefachim yet if the Pirtza is in the front corner it’s allowed to be up to 4 tefachim.
What’s the explanation for the difference?
See רשב”א
And רש”ש
And מהרש”א
And תוס’ רבינו פרץ