Foshan, Zhongshan 6 + 9a + 6 construction hollow glass

Glass emergency escape method in the bus we have seen a hammer that safety hammer, emergency escape when people are used to shatter the glass of the bus. Safety hammer mainly using its conical tip, and the contact area of ??the glass is very small, so when struck with a hammer Za Boli, the contact point of the glass pressure (not the pressure, but the pressure per unit area) is quite large, and according to this principle is somewhat similar pushpin. Tempered glass in the hammer beating, it is easy to be cracking, resulting in cracking. We all know that the glass, the cracks a little bit mean stress distribution inside the glass block has been destroyed, resulting in countless spider web-like cracks in an instant, then just gently hit with a hammer and then a few will be able to The glass fragments removed. In addition, the middle part of the glass is the most solid, corners and edges are the weakest. The best way is to use safety glass hammer edges and corners, especially the middle of the top edge of the glass where once the glass has cracked, it is easy to block smashed. Tips: glass openings in claim 1, and only the width of the glass to drill eight times greater than the thickness. 2 and a thickness of no more than 12mm of glass from the hole edge to edge of the glass should not be less than 1.5 times the thickness of the glass; thickness of more than 12mm of glass from the hole edge to edge of the glass should not be less than twice the thickness of the glass. 3, the hole diameter on the glass should be at least greater than the thickness of the glass of 1.6mm; the diameter of the hole should be less than the minimum width of 1/3; shaped hole in the glass, the corner position rounding radius should be larger than the glass thickness. 4, when it is not less than 90 degrees opening angle, the distance to the hole edge sharp angle should be more than 6.5 times the thickness of the glass. 5, the concave portion of the glass should not be less than the thickness of the fillet radius.