| 摘要 |
FIELD: construction. ^ SUBSTANCE: wall of a safe includes outer and inner walls with a space filled between them. A safe wall represents a sandwich panel comprising four steel sheets arranged in parallel planes and forming three layers between external and internal steel sheets with different filling, at the same time the first layer includes an expanded steel sheet fixed on the inner side and a composition of crushed rubber and quartzite with fraction size of 5-10 mm in a binder filling the space between the expanded steel sheet and the second steel sheet, the second layer comprises a veneer sheet fixed on the second steel sheet, and a row of parallel arranged strips of hot rolled metal, fixed on the third steel sheet, with filling of the remaining space with aerated concrete, and the third layer includes a row of parallel arranged pipes of a rectangular cross section, fixed on the fourth steel sheet with filling of the space inside pipes and the space between the third and fourth steel sheets - with aerated concrete. ^ EFFECT: considerable increase of time of resistance to break-in of a safe wall with the help of an electric tool, a hand impact tool, and also using a gas burner. ^ 3 cl, 1 dwg |
