Sanasazan Engineering Technical Company


In construction, a sheet of gypsum compressed between two thick layers of paper or cardboard and used to make interior partition walls and ceilings is called a drywall or gypsum board. Cement board is used to cover the exterior walls of the building and drywall is used to lighten the interior of the walls. This product is called drywall because it does not use more materials such as cement and plaster when installing and running it. Dry walls are installed and reinforced by wooden framing or light steel framing; therefore, during an earthquake, the integrated behavior of the wall makes it stronger. Dry wall is a category of “prefabricated walls” that is used today as one of the alternatives to traditional walls with non-reinforced building materials (compression bricks, clay bricks, non-reinforced concrete blocks). Drywall is used as an interior partition wall, finishing coatings and covering of building structures. Using drywall instead of masonry reduces dead load by 35%, reduces effective seismic force on building by 60%, and reduces the cost of providing stability. It becomes a building. Dry walls in the United States and many developed countries are common materials used in the construction of interior partition walls in concrete structures, steel structures, and wooden structures; Unarmed) is obsolete in most developed countries. For the implementation of drywall, in cold concrete and steel structures, cold sections of light are used and in wooden structures, wood is used between the two walls of the wall. Dry walls, known in Iran as Knauf brand, are non-load-bearing walls used to divide the interior of a building. With sections U and C, the gypsum-coated sheets are installed on them in one or more layers with a special screw. The seams between these plates are sealed with tape and a special putty, so that at the end of the work, a seamless and seamless surface that can be painted and tiled or any other final coating is obtained. The empty space inside the wall makes it possible to use a variety of thermal and acoustic insulation, as well as easy access and access to electrical and mechanical installations.

Some of the advantages of using drywall in the building compared to traditional building walls are:…
Decreased dead load of the building and consequently significant impact on reducing the load caused by the earthquake The effect of proper interframe dry walls in interaction with the structure during the earthquake due to the connection of the drywall frame to the structure. Pottery, sand, cement, gypsum, clay and water after the implementation of the skeleton and roofs and saving the costs of disposing of materials and transporting materials to the floors No need for welding equipment and elimination of electricity consumption and related problems in urban areas High running speed (about 3 to 4 times faster than the traditional system) and elimination of overhead costs associated with the establishment of Eki The traditional implementation of reducing capital sleep time (from the start of the building to the completion of the joinery stage) is remarkable capabilities in thermal insulation and more compliance with the standards of the nineteenth issue of national building regulations. Significant capabilities in sound insulation against percussion and airborne sound traction in Building mechanical and electrical installations Simultaneously with the implementation of blades and using the empty space between the blades Easy access to mechanical and electrical installations in case of installation problems and easy and quick repair of blades and false ceilings without the need for traditional materials. Cement and gypsum and Cleaning the walls, floors and frames of doors and windows significantly reduces the volume of construction waste and the costs of cleaning and transporting waste outside the building. Quality and standard quality of drywall materials due to industrial production and elimination of costs due to non-uniformity of traditional materials and warehouses. Making materials such as cement and gypsum and protecting against the effects of moisture and inefficiency of materials reduces the dead load of blades and the possibility of involvement in skeletal and foundation calculations according to the sixth topic of national building regulations and significant savings in skeletal and foundation materials. Reduce the thickness of the blades (approximately in one wow The 150 m² 8 square meters of useful space is incremented) applicable on the finished floor that future changes in architecture is very easy. No need for plumbing and alignment when tiling ceramic work on the wall and floor and increase the speed of tile and ceramic work.

Drywall structure This structure consists of gypsum (has special chemical properties with good fire resistance) which is placed between two layers of special cardboard sheets. Sheet metal for various types of final coating including: (Putty, painting, wallpaper, etc.) and a strong sheet is used as the bottom layer. This type of dry structure has good and suitable resistance to fire and can be installed on wooden frames or light steel frames and ordinary walls. This system is designed to become an integrated system with proper coverage in the connection joints. With the use of this system, in addition to reducing the dead load of the building, the destructive effects of the earthquake force on the building are reduced and many casualties are prevented during the earthquake. Turkish designers and engineers are implementing all new buildings with this system after the Kocaili Heavy Earthquake and the heavy damage and destruction of many buildings and the killing of many people. In this country, the use of these walls has increased about 10 times in the past. In Iran, according to Regulation 2800, stylization is done up to a stage where the resistance to overturning is not less than 1.75.