Duplex structure of the house, the lower part of the compartment hanging gypsum board ceiling problem
I do not recommend directly fixed on the I-beam, the correct approach is welded in the I-beam hanging bars, and then hanging the main keel, the main keel layout, the vertical arrangement of the vice keel, so more reliable!
The so-called dovetail is a screw from the drill bit, more suitable for 1.5MM within the steel plate fixed.
The center of the keel between the keel and the keel should be kept at 30 cm (we all do it), which is the normative requirement. Is the spacing of your I-beam exactly 30 cm? The Even if it is, even if he can put the screw into it, can do that, your top of the ceiling is definitely not flat.
Only in the four weeks before the first set a good level, I-beam above the need to put things, such as you said the cement board, etc., first placed well, and then follow the normal ceiling to do. Surrounded by the wall of the eye, the middle can be fixed with wood on the I-beam, and then add the wood made of gypsum board keel (gypsum board fixed on the woods). If the height is limited, you can close to the lowest level of I-beam position to do; if you need to drop a little, you can also level down.
First of all, the compartment of the I-beam bottom itself will not be flat, plus the pressure on the above components, resulting in it high and low. And, when installed I-beam, it is not necessarily around the level of the.