[Avodah] www.crcweb.org/SchachMatFencing2013.pdf

[Micha Berger]

On Fri, Sep 13, 2013 at 01:58:34PM -0400, Yosef Gavriel Bechhofer wrote:
: See http://www.crcweb.org/SchachMatFencing2013.pdf
: 
: Why should there be a difference if the schach is parallel or
: perpendicular to the support beams? If it's parallel it's more mechzei like
: a fence?

I would think the problem is yeish lavud ba'emtza (Sukkoah 18a). If the
space between the slats runs from one end of the sukkah to the other,
it splits the sukkah into sections, none of which would have the shiur.
See the first Tosafos ad loc, "ein labud ba'emtza".

Tir'u baTov!
-Micha