Aluminum glass curtain wall fire regulations

Aluminum glass curtain wall when subjected to fire or heated, easily broken, and even cause a large area of ​​crushing accidents, resulting in fire spread rapidly, causing a large fire, endangering the safety of persons and property, a so-called "fire air duct." Tall buildings at home and abroad for the actual practices and aluminum curtain wall fire lessons between the glass window walls, windowsills wall site with rock wool, mineral wool, glass wool, aluminum silicate and other non-combustible material cut off. stone coated metal roofing tile
Aluminum glass curtain wall fire the general provisions, as follows:
(A) wall between the windows, windowsills wall filler material should be non-burning material. When the outer wall using fire resistance of not less than 100h of the body does not burn, it can be difficult to burn wall filler material. stone coated metal roofing tile supplier
(2) No spandrel glass curtain walls and windowsills should be set at the outer edge of each floor fire resistance of not less than 100h, height of not less than 0.8m non-burning solid skirt wall. stone coated metal roofing tile manufacturer
(3) with each floor glass walls, the gap at the wall should be used strictly infill material does not burn.
Glass is a non-regular structure of amorphous solids (from the microscopic point of view, the glass is a liquid), unlike its atomic crystals as space has long-range order in the arrangement, rather similar to the liquid that has a short-range order. Glass like a solid maintain a specific shape, unlike the liquid that flows with gravity. stone coated steel roofing tile
Glass has four basic continuity:
(1) Isotropic: the glass is no regular arrangement of atoms, the atoms in space which has a statistical uniformity. In the ideal situation, homogeneous glass, the physical and chemical properties (such as refractive index, hardness, elastic modulus, thermal expansion coefficient, thermal conductivity, electrical conductivity, etc.) is the same in all directions. stone coated steel roofing tile supplier 
(2) no fixed melting point: Glass transition from solid to liquid is a certain temperature range (i.e. softening temperature) carried out within it different from the crystalline material, there is no fixed melting point. Softening temperature range Tg ~ T1, Tg is the temperature change, T1 is the liquidus temperature, the corresponding viscosity was 10dPa · s, 10 dPa · s. stone coated steel roofing tile manufacturer
(3) the metastable nature: the glassy substance is usually obtained by rapid cooling of the melt from the molten state to the glass transition, the sharp increase in viscosity during cooling, particles too late to do a regular arrangement of crystals is formed, no release latent heat of crystallization, therefore, glassy material than the crystalline material contains a high internal energy, the energy between the molten state and the crystalline state, belonging to the metastable state. From the mechanical point of view, the glass is an unstable high-energy state, such as the presence of low energy state into a trend, that is, the crystallization tendency, so the glass is a metastable solid material.
(4) with a gradient of reversibility: the glassy material from a molten state to a solid state, the process is gradual, its physical and chemical properties of the change is also a continuous and gradual. This is significantly different from the melt crystallization process, the crystallization process is necessarily a new phase in the vicinity of the crystallization temperature, many of the properties will be mutated. The glass material from the molten state to a solid state is completed within a wide temperature range, as the temperature decreases, the molten glass viscosity increases, and finally form a solid glass, but no new phase formation process. Instead of glass melt into the heating process is gradual.

by www.metal-roofing-sheet.com