High-end buildings generally use glass curtain walls, stone curtain walls and new plate curtain walls. It was reported in the early days that many glass curtain walls fell off. This is because most glass curtain walls are fixed with glue, but the glue will age, so the safety hazard of glass curtain walls has been difficult to solve.
Various localities have issued policies on restricting glass curtain walls, and some special buildings no longer allow glass curtain walls. Let's talk about the new curtain wall, which is a new industry. Once destructive technology appears, it should develop into a new field in a few years. If you don't look at it, the new plate hasn't reached enough height, and it is difficult to reproduce the natural characteristics of stone. Stone curtain wall still occupies a decisive position in high-end projects.
The small screw for fixing the stone is the back bolt. Back bolts are mainly used to fix external wall stones, and of course there are also back bolts for dry hanging tiles. Back-bolted stone curtain wall has now developed into a very mature technology. As long as there is no problem with the construction quality, the service life of the whole external wall can reach hundreds of years.
Extended data
Classification of back bolt:
1. Screw-in back bolt: originally developed by Kyle, it is mostly used to fix thin plates (usually tiles) with a thickness of 8 mm-20 mm
2. Impact back bolt: originally developed by HUI, it is divided into ring impact back bolt and sheet impact back bolt, which are mostly used to fix thick plates (usually stone) with a thickness of more than 25 mm.
3. Anti-loose back bolt: originally developed by Baylord, it can be used to fix medium and heavy plates (such as stone and cement fiberboard), and its thickness is more than 16 mm.
4. Double-cut back bolt: originally developed by four sets, it can be used to fix thick plates (usually stone) with a thickness of more than 25 mm.
Shanghai Dali Construction Technology Co., Ltd.-Use and Classification of Back Bolt