Yosef Karo

“ Paragraph 11 - What is the frame of an entrance? A pole here and a pole here and a pole on top of them. This even works if the top one doesn't touch the bottom ones and there are a few amot between them, as long as the poles here and there are ten tefachim tall and are pointed towards the top pole. If the top pole is connected to the two bottom ones or to one of them on their side, it does not work. The poles must be strong enough to hold some sort of door, even if it is made of straw or reeds, but the pole on top can be anything, even reed-rope. ”

“ This is only true if he fills the space between the leaves with straw and ties the branches such that the wind will not shake them, because any wall that cannot withstand normal wind is not a wall. [Trees can only allow carrying in area] up to two seahs, but more than that is not allowed, even if the trees were planted specifically for this purpose, because trees are not generally made for living within them. They are made for the field-keeper to rest in their shadows. ”

“ If it was inverted in order to be coated with pitch, we only carry within four amot if it is bigger than two seahs.
סעיף ד - ספינה, מתר לטלטל בכלה אפלו היא יותר מבית סאתים, דחשיבה מקפת לדירה (ועין לקמן סימן שס"ו וסוף סימן שפ"ב) . כפאה לדור תחתיה, הוי רשות היחיד אף עליה, כפאה לזפתה, אין מטלטלין בה אלא בארבע אמות אם היא יותר מסאתים.
Paragraph 5 - A wall can be made with anything. It can be made of vessels or saddles. Walls can be just the crosspieces, like ropes, or it can be just the vertical parts, like posts stuck in the ground ”