Qaybta lo'du waa nooc ka mid ah baalasha xoolaha ee taranta xoolaha ee beeraha.Waxa laga sameeyay tuubooyinka birta oval iyo tuubooyinka labajibbaaran.Tuubooyinka oval-ka ah waa kuwo kulul oo galvanized la geliyey ka dibna lagu rinjiyeeyay daawaynta dusha sare.Dhumucdiisuna waxay ku dhowdahay 1.5-2mm.