is there a minimum absolute size for schach/sechach? That is, if a Succah starts at 7×7 tefachim but has walls that bend after they are 10 tefachim high, how much can they bend and how small can the resulting area of schach be?
THANK YOU AND CHAG SAMEACH
The walls that “bend” are considered walls, and not schach. Therefore you will need 7×7 tefachim after them in order for the succah to be kosher. The walls can bend up to a distance of 4 amos, which would be 1.44 meters or 4 ft. 8.7 inches, (according to R’ C. Noeh). See comments.
Succah 4a, O:CH 632-1