Can one use for supporting the Schach of a Suka wooden beams that have been glued together? Is that considered as ‘Maamid’ or providing support for the Schach using something that is not fit for being covering a Suka or maybe it just avoids the beams separating and by itself does not give support.

Shebet Halevi (137: 9) permits because the glue is usually not visible or is not used as S’chach for covering a Suka, which are the reasons of the ‘Ma’amid’ prohibition. However, some Poskim are stringent. (Sefer Hasuka 1: 18: 21 quoting Horav Eliashuv Zt’l on Kovetz M’Beis Levi). Horav Shlomo Miller’s Shlit’a opinion is that additionally, if the glue is just holding the beams together and not providing direct support, it would anyway be permitted as nails also are in a similar situation.