The accident that caused the casualties caused by the fall of the hanging flat roof was heard. The main causes of the collapse of the flat roof can be summarized as:
(1) "nail." There are several methods for fixing the boom and the floor slab, in which a mallet is used to drive into the floor slab (concrete floor slab), nails or screws are used to nail (hold in) the wooden pole inwards, and some use pneumatic nails to fix the wooden material in place. Fix the boom; or hit the concrete slab in the sky with a shot nail to fix the hanging point of the boom; or fix the primary keel or wooden boom with nails that lean against the heavens. This is a category of "nature."
(2) "Keep the top". The flat roof is not suspended from the hanger, but the keel of the flat roof is directly fixed with a needle on the wall or the side of the beam to fix the ceiling.
(3) Suspender overload. Hangers with flat tops are sparse or too thin, and the flat top weight exceeds the force that the boom can withstand.
(4) The wood boom spalling or steaming needle is too short and too little.
In the above four cases, when the room has just been decorated, the flat top does not fall down immediately, but after a period of time, due to the friction of nails nailed into the floor by the sky, the flat top weight; Fixed around, there is no boom in the middle of the keel, under the keel scratch; sparse sparse; wood boom spalling or nail penetration length insufficient, too thin, etc.; a long time or flat-top vibration, it will cause a flat top collapse ACCIDENT.
Therefore, in the construction process of hanging flat roof, the above four situations should be avoided. When the connection must be fixed in the sky, expansion bolts or special expansion tubes should be used. Connect the primary and secondary keel application screw connection, the flat top keel application boom connection, the person flat top application f6 ~ f10 steel, wood boom available 50mm'50mm or 40mm'4Omm; not available flat top available (4 galvanized steel wire For hangers, the spacing between the hangers is generally 900-1200mm, and the spacing between the main keel is not to be greater than 120Omm, and when the fixtures are fixed on the keel, additional strengthening is required.
For the installation of the suspended ceiling bar and keel, a full inspection should be performed before the installation of the ceiling panel. The methods of manual test, ruler measurement and observation and inspection are generally used.
Aisle ceiling living room ceiling decoration
Double Glass Solar Panels,Double Glass Solar Panel Factories,Double Glass Solar Panel Price,Perc Mono Double Glass Bifacial Solar Panels,Double Glass Frameless Solar Panels
Jiangyin Haoxuan Technology Co., Ltd. , https://www.haoxuan-tech.com