[Avodah] perpendicular schach

[Eli Turkel]

<<I have never understood the idea of putting the schach on wooden sticks
which rest on something that is mekabel tumah (e.g. metal) for the
following reason. The wood that is used to hold up the schach is in and of
itself kosher schach (otherwise it can't be used as a maamid)  therefore,
why should we consider the wood a maamid of the schach , rather it should
just be considered schach itself which is resting on the metal. R' Tzvi
Pesach Frank among others points this out and I have not seen a good answer
for this claim.>>

If I understand correctly the question is on all maamid.
In fact CI doesnt disbtinguish between maamid and mmamid de-maamid but that
is a daas yachid
seemly against SA.
If I remember Brisk allows even maamid

-- 
Eli Turkel
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