Glazing in building

For the calculation of such glazing in building-dynamics simulation codes, each pane is considered as a layer, exchanging energy with the other panes, with the room, and with the exterior. 

Maximum window areas for single glazing in buildings otherthan dwellings will be unchanged. 

DIN 52 453, part 1 1978 Testing of sealants for sealing and glazing in building constructions migration of binder testing of discoloration of adjacent building materials. 

DIN 52 455, part 1 1975 Testing of sealing materials for sealing and glazing in building constructions adhesion and cohesion test pretreatment in controlled atmosphere and in water. 

DIN 52 456 1976 Testing of sealing compounds for sealing and glazing in building constructions determination of the extrudability of sealing compounds. 

Polymethacrylates. Poly(methyl methacrylate) [9011-14-7] is a thermoplastic. Itis the acryUc resin most used in building products, frequendy as a blend or copolymer with other materials to improve its properties. The monomer is polymerized either by bulk or suspension processes. Eor glazing material, its greatest use, only the bulk process is used. Sheets are prepared either by casting between glass plates or by extmsion of pellets through a sHt die. This second method is less expensive and more commonly used. Peroxide or azo initiators are used for the polymerization (see Methacrylic polymers). 

Corrosion was observed on the aluminum pressure plates and dress-caps that hold the glazing in place on a curtain-walled building. The dress-caps (which have L-shaped cross-sections) were externally clad with thin copper sheet. 

DIN 52 455, part 2 1974 Testing of sealing and glazing compounds in building constructions adhesion and extension test cyclic conditions. 

Opaque glazes contain opacifiers either in frit (zircon, fluorides) or as a secondary component (Sn02). They are used wherever the body colour is to be covered or to attain pastel colour shades, in particular in building ceramics. Lead-free glazes are likewise given preference in industrial production. 

Polycarbonates are mainly used as a glazing material in construction (transparent roofing, impact-resistant glazing, sheet and for structural parts in building and construction). Greenhouses and the dome of the Sydney Olympic stadium all have PC sheet glazing. PC sheets are virtually unbreakable (bullet resistant windows, protective PC glazing panels). PC resins and BPA are known to be safe and they pose no health risk to humans. 

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