Ceiling twenty square meters need light steel keel how many roots
If the height of the room does not exceed 4 meters, usually: the main keel 1.2 meters, vice keel 4 meters (300MM open file), 1 meter pole, gypsum board 1.05 square (5% loss). Accessories too much here to do not introduce. The above calculation method is limited to flat top, if the shape plus 20% -30%
Light steel keel ceiling material ratio does not have a standard number, generally according to the shape of the room, height related.
