>>> Related Links: General bathroom ceiling purchase common sense and construction installation Why does the painted roof collapse? In the well-decorated room, due to the collapse of the painted flat roof, the interior decoration was damaged, and even the case of casualties occurred before. The main reasons for this are: (1) The bottom of the house floor slab is uneven, the stucco leveling layer is too thick, or the adhered impurities at the bottom are removed. (2) The cast-in-place concrete floor slabs are sloppy and sloppy, or use waste oil as a mold release agent. They are sewed with linoleum or fiberboard and even with paper, and are not removed before painting. The above two conditions cause the poor adhesion of the stucco layer to the floor slab, resulting in empty drums or even cracks. The paint is directly removed from the paint during inspection, and the paint is directly applied to the leveling paint. The flat roof collapsed after a certain period of time. Therefore, in the process of decorating the flat roof, the preserved original paint layer must be checked one by one, and the empty drum and cracked paint layer should be removed and redone. When using highly vibrating implements, special attention should be paid to not vibrating the floor before fixing the paint layer at the end. At present, relevant departments are considering removing prefabricated floor slabs from residential houses and adopting cast-in-place concrete floor slabs, and require that the bottom of the slab be leveled off and the flat-top whitewashing be eliminated, and that batch leveling should be used. This is an effective measure to avoid collapse of flat-topped whitewashes. When the home decoration is painted with a flat top, it is necessary to check whether the stucco layer is firmly bonded, does not hollow out, and does not crack. Observe and tap with a hammer to check. Why do the flat tops fall? 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 distance between the hangers is generally 900-1200mm, and the spacing between the main keel is not to be greater than 120Omm. When the lighting fixtures are fixed on the keel, additional strengthening is required. For the installation of the suspended ceiling and keel, a full inspection must be performed before installing the ceiling panel. , General manual test, ruler measurement and observation and inspection methods. What should be paid attention to when lifting flat top on prefabricated floor slabs When the boom is installed on the prefabricated floor slab, the boom is difficult to install. If it is hit in the hole of the prefabricated perforated plate, the boom cannot be fixed. Even if it can be temporarily fixed, it is difficult to rely only on fine stone concrete with a thickness of about 10 mm. To withstand the weight of the flat top, easy to collapse the flat top; if hit on the rib of the prefabricated porous plate, this part is the place where the prestressed steel wire is set, the prestressed steel wire is easily drilled to break the force of the floor, so that The collapse of the floor slabs causes greater danger and therefore no holes should be drilled on the prefabricated panels. However, due to the fact that a large part of the original building is made of prefabricated porous slabs, the ceiling should be given special attention when such flats are to be suspended. When it is necessary to lift the flat top on a prefabricated porous board, the boom should be installed in the gap between the two prefabricated panels. Therefore, during the construction, the position of the prefabricated panel seam should be found and the arrangement position of the boom should be determined. Install expansion bolts in the plate joints of the hangers and fix them on the expansion bolts by means of connectors. Do not directly connect the hangers and expansion bolts to prevent the two different steels from being welded and pulled off. Or the fracture caused the flat top to collapse. The connector can be generally cut into 3O to 50mm lengths with 3-5 angle steel. A hole is drilled on one side of the angle steel, and the expansion Bolt is fixed to the other side. The other side of the angle steel is welded with the steel bar used for the hanger. The welding length is generally the diameter of the rebar. 5 times so that there is sufficient tensile strength. Hanger spacing is generally 9OO ~ 12O0mm, suspenders of the top and bottom hanging pieces should be connected firmly can not loose. After installation, the boom should be inspected one by one, and no boom can be drilled on the prefabricated perforated plate. If adhesive rods are used to install the suspenders, they shall be selected on the surface of the prefabricated porous plate, and the paint layer shall be removed. After bonding, the test shall be conducted one by one. The suspenders shall not be stuck on the holes of the perforated plate. Why do you need to brush fire retardant paint in the wooden flat top? In the decoration of the living room, there are many wood decorative materials. According to the requirements of fire protection, the decorative materials used for flat roofs, walls, and floors should be non-combustible or flame-retardant materials, while the water quality materials are flammable, so they should be fire-protected. deal with. As the current domestic decorative building materials market, a little emphasis on the fire protection of decorative materials, the fire protection requirements of the decoration materials is worse, non-fireproof wood materials are more common, especially home decoration, not enough attention. In the flat roof, the lighting, air conditioning and other electrical lines are generally laid. If the wooden material in the flat top is not fireproofed, it will leave hidden dangers. Therefore, the decorative wooden material in the flat top shall be coated with the second degree fireproof coating. In the case of non-colored transparent fire retardant coatings, the surface of the wooden material should be brushed twice, and no brushing should be allowed, so as to prevent the electric wires from igniting the wood material due to poor contact or leakage due to electric sparks. Fire. Why is the flat roof undulating? The flat roof will show a wavy shape, a sinking middle, or an uneven flat top. There are many reasons for this phenomenon, mainly the following: (1) The horizontal baseline was accurately ejected four weeks before the ceiling was lifted, or it did not follow the horizontal baseline. (3) The distance between the booms is too large or the keel cantilever distance is too large. The deflection caused by the keel force causes flat tops and undulations. (4) The wooden boom spalling did not work. (5) The boom was not carefully adjusted and the local boom was not evenly stressed. (6) Deformation of wooden keel, bending of light steel keel is not adjusted. (7) Thickness of the joints of the panel of the concealed flat top cover caused the joints to protrude, resulting in the formation of flat tops and undulations. (8) The cover panel deforms after absorbing moisture. Therefore, before the flat top is hoisted, the materials used must be selected, checked, and the materials that do not meet the requirements must be removed. In the construction, according to the height determined by the flat top, a horizontal line is popped up on the surrounding walls. According to the materials used in the room and the top of the room, the materials and arrangement spacing of the hangers are determined. Generally, the horizontal spacing of the hangers is 900-1200mm. Hangers should be used for special suspenders, steel bars, etc. When wood materials are used, wood that is not rot, crack, or hard is selected. When fixing the water boom, the boom must not be cracked, nor can it be fixed with a fine wire needle to prevent the wood boom from coming off. Hangers avoid the use of wire, especially the pedestal flat top, because the flat top itself is relatively heavy, due to poor anti-fatigue strength of the wire, after the force will extend, causing the flat top sink. Keel deformation should be avoided when installing the keel. When the water keel is used, the moisture content of the keel should not be more than 15% in Shanghai and not more than 12% in the dry area to avoid deformation of the keel. When installing the keel, special attention should be paid to the distance between the keel suspension wall should not exceed 300mm. Additional booms should be added at the two main keel joints. When the suspenders and keel are adjusted, arches should be made in the middle part, and the arches are generally 1/2 OO in the short span of the room. When the concealed flat top is fixed on the cover panel, the screw tails should not be exposed. After the joints are batch-applied and seamed, a full batch shall be made so that the joint between the cover panel and the middle part is a plane. After flat roof construction, dampness should be avoided, especially light flat roof. The flat roof is required to be firmly installed, not loosened, and the surface is flat. Therefore, before the flat top cover is lifted, the installation of the hanging point, the boom, and the keel must be inspected. Loosening of the hanging point, bending of the suspender, deflection of the suspender, and keel must be checked. In case of looseness, unevenness, etc., the construction personnel shall be supervised to make adjustments. If electric cables, water supply and drainage, and air-conditioning pipelines are laid in the flat top, the panel must be sealed after the installation is completed and debugging is in compliance with the requirements, so as to avoid damaging the flat top and affecting the formation of the flat top. After the cover panel is installed, it should be inspected whether it is flat or not. Generally, it is checked by observation and manual test. If necessary, the flatness of the cover panel can be checked by pulling the wire and measuring the amount. Why do cracks appear on the flat top of the cradle? Shortly after the construction of the flat top, some flat roofs will have cracks, especially in the joints of the cover panel. The reasons can be summarized as follows: (1) The cover panel is removed and removed. (2) Shrink after drying the cover panel. (3) Board seams do not meet the requirements. (4) Insufficient flat top rigidity. For the first case, it is better to handle. When installing the cover panel, the cover panel with dark cracks after the damage should be removed. If it is found after installation, it should be replaced in time. For the second case, cover panels with better quality and less shrinkage should be selected. If using air conditioners, the temperature should not be too high, so as to avoid cracks in the cover panel and putty drying shrinkage. In order to avoid the occurrence of the third condition, the long edge of the cover panel should dry the secondary keel vertically when the cover panel is fixed. The cover panel shall be fixed with a countersunk head tapping screw, the peripheral nail pitch shall not be greater than 200mm, the middle shall not be greater than 300mm, and the edge of the screw from the board shall be controlled at 1O to 16mm. Between the board and the board should be separated from the gap, the gap between the gap is controlled at about 5mm, the debris in the board gap, loose items removed, clean, putty with the putty will be filled, until the putty is dry and then put in more dilute paste On the seam belt, use a scraper to flatten and compact the surface, to drive out the air bubbles between the putty and the seam belt. After the putty is dry, the top surface of the batch is flattened and flattened. This operation can avoid the dry shrinkage of the putty in the board seam. Cracks occur. For the fourth case: lack of flat top rigidity is caused by a variety of factors. Therefore, when lifting the flat top, in addition to pressing the front of the "lifting flat top why the undulation mentioned in the boom, the main keel installation In addition, in order to increase the rigidity of the flat top, the main keel spacing should not be greater than 1m, and steel wire or steel less than f6 should not be used as the suspension rod. The connection between the boom and the keel is not loose, and the strut should be counter-supported. In order to increase the rigidity of the flat top, it is avoided that the flat top is affected by the external force to generate vibration and cracks appear. Why do we need to set up the access hole for the flat roof In the home decoration, no inspection holes are generally provided for the hanging flat roof. This is mainly because the owner thinks that the setting of the inspection hole will affect the effect of home decoration and affect the appearance. I do not know that this will bring great inconvenience for future use. Once the flat-top pipeline equipment fails, it is impossible to check what the location is, what the reason is, and how it can not be repaired. This often requires knocking out a very beautiful flat top, causing unnecessary economic losses. Therefore, in the home decoration, it is better to install a manhole for the ceiling of the laying pipeline. Of course, the access hole can be set in a relatively concealed and easy-to-check position. In order not to destroy the aesthetic effect of the decoration, the manholes can be artistically treated, for example, in combination with a lamp or decoration. What is the best material for flat roofs in kitchens and bathrooms? We often see that the flat top paints in kitchens and bathrooms will peel off, and some flat tops will be flat when they are new. After a period of time, there will be middle sinking and even mildew. What is the reason for this? It is due to the influence of water vapor. Because the bathroom is generally a place to bathe, the kitchen cannot be completely drained due to cooking, cooking, etc., even though a hood is installed. Therefore, if the two flat tops between the bathroom and the kitchen are covered with moisture-absorbing cover panels such as Armstrong plates and TK plates, or when they are easily absorbing moisture, the above situation will occur. Therefore, in the kitchen, the bathroom hanging flat top, should use non-absorbent materials, generally should use metal, plastic and other cover panels. If other cover panels are used, the damper flat surface should be protected against moisture, such as brush painting. For the flat top cover panel, a non-hygroscopic cover panel should be used. Why do you use safety glasses for flat-top glass and flat-top light boxes? The use of rich colored glass, frosted glass, etc., as flat tops and light boxes, is very characteristic, so it appears more and more in home furnishings. This kind of flat top decoration works well, but if the materials are not properly used, safety accidents are likely to occur. Because the floor height of ordinary residential houses is not very high, the vertical space is even smaller after the flat roof is lifted. In residential use, it is inevitable that it will hit the glass. Little attention will be given to the impact force, and the glass will easily break and come off. Accidents. For safety, safety glass should be used on flat tops and other vulnerable areas. At present, our country provides tempered glass and laminated glass as safety glass. Why is the flat top of the gusset flat? The gusset plate is a new type of decorative material that has emerged in recent years. It is light, water-resistant, dust-free, corrosion-resistant, easy to scrub, easy to install, strong in three-dimensional sense, soft in color, nice in appearance, etc., and is well received by users. The gussets are particularly suitable for ceiling decoration in kitchens and bathrooms. However, the pinch plate and its associated frame are pressed and formed by a metal sheet or plastic. The connection form of the pinch plate is a plug-in type. In order to ensure that the connection is not loose, the connection structure should be relatively accurate, allowing adjustment range. Smaller, higher installation requirements. If the flat-topped frame is not flatly installed or the frame is deformed or the gusset plate is deformed, hard insertion or the like during the installation may cause uneven flattening of the buckling plate. In order to avoid the occurrence of unevenness on the flat top of the buckle, attention should be paid to the following points during the construction process: (1) The purchased gussets and their associated frames and fittings shall meet the product quality requirements and must not be bent and deformed. (2) During the transportation and stacking process, the pinch plate should be laid flat and cannot be pressed, and high temperature and harmful substances should be avoided. (3) The installation of the frame is smooth and the spacing deviation should be controlled within the allowable range. (4) When installing the gusset plate, if there are deviations in size, it shall be adjusted in advance and then inserted in order. It shall not be hard-inserted to prevent deformation. (5) Large lighting fixtures, exhaust fans, etc. shall be provided with separate spreaders. They shall not be placed directly on the flat tops of the buckles. As long as you pay attention to the above five points, you can basically achieve the decorative effect of the gusset flat top and avoid unevenness. During the construction process, if necessary, observation and inspection may be performed by means of a ruler, hand test, etc. Ceiling Mount Decorative Glass Room Coatings House Glass Doors Kitchen Glass Sliding Doors Bathroom Doors Bathroom Ceiling Material Bathroom Door Size Bathroom Size Bathroom Ceilings Bathroom Exhaust Fans Integral Bathroom Home Furnishing Decoration Home Siding Nails,Grip Rite Siding Nails,Siding Nails Lowes,Coil Siding Nails Suzhou Guangxuan Fasteners Co.,Ltd. , https://www.beinuofastener.com
(2) The end of the suspender in the middle of the flat top is adjusted upwards, not only not arching but instead sinks due to the middle load of the intermediate boom receiving the flat top.