New fire safety requirements
Not so long ago, the "Technical Regulations on Fire Safety Requirements" began to operate in Russia, with the adoption of which several new concepts appeared, such as: the class of functional fire hazard of buildings and the class of fire hazard of building materials. Based on these concepts, new requirements for materials for escape routes and halls were formulated.
According to these requirements, walls and ceilings in lobbies, elevator halls and stairwells in buildings of preschool educational institutions, specialized homes for the elderly and disabled, hospitals, cinemas, clubs, sports facilities with stands and many others must be made of materials of the KM0 class. The same condition applies to the arrangement of halls with a capacity of more than 300 people in these buildings. The need to use non-combustible (NG) materials also exists in some buildings of other classes of functional fire hazard with a height of more than 17 or a height of more than 50 m, as well as in halls with a capacity of more than 800 people.
The task of ensuring fire safety and ways to solve it
The main thing that follows from all of the above is that there is a need for non-combustible material for escape routes and halls. But how much do we know about non-combustible materials, especially non-combustible materials for dry construction? Gypsum plasterboard KNAUF-sheet, which has long and successfully been used for cladding structures of partitions, facings and ceilings, has a fire hazard class of materials KM2. Knauf gypsum-fiber superlist is familiar to many designers as a material for achieving optimal values of the fire resistance of non-bearing structures. And now the Knauf company offers a solution to the problem of using KM0 materials - Knauf-Fireboard!
Knauf-Fireboard is a non-combustible sheet material of 2500x1200x12.5 mm format, consisting of a fireproof gypsum core with the addition of vermiculite and glass roving, all planes of which, except for the end edges, are lined with non-combustible fiberglass, firmly glued to the core. All board edges are rectangular.
Areas of use
Knauf-Fireboard slabs are used as a fire-retardant facing material in frame-sheathing structures of partitions, wall cladding and suspended ceilings on escape routes and in halls in buildings of various functional purposes, number of storeys and capacities.
Knauf-Fireboard can be used as an additional non-combustible cladding, which is attached to existing wall structures.
Non-combustible gypsum boards KNAUF-Fireboard are an ideal material for the construction of fire barriers that prevent the spread of fire and combustion products from the room or fire compartment with the seat of the fire that has arisen to other rooms.
Types of structures
The fundamental difference between the behavior of Knauf-Fireboard boards from other sheet gypsum products under standard fire tests is that after evaporation of crystallization moisture from the gypsum core, the product does not crack and does not collapse for a longer time. In addition to the reinforced gypsum core, this is achieved by the presence of a non-combustible fiberglass, which serves as a fire-resistant reinforcing frame of the product. This was proved by fire tests at VNIIPO EMERCOM of the Russian Federation, to which both the material itself and the main types of partition structures with its use were subjected (С 131.1, С 131.2, С 132, С 135, С 136). According to the test results, a partition with a single-layer sheathing made of Knauf-Fireboard S 131.1 showed an actual fire resistance limit of 80-85 minutes, in a step from the limit of 90, which is why it received a conclusion for 60 minutes. For example, the same structure, but with a sheathing made of Knauf sheet, has a fire resistance limit of 45 minutes. The use in this structure of just one layer of sheathing on one side from KNAUF-Fireboard S 131.2 also allows reaching the fire resistance limit of 60 minutes, confirmed by the conclusion of VNIIPO EMERCOM of the Russian Federation.
Structures of partitions with two-layer sheathing on single (C 132), double (C 135) and double spaced (C 136) frames with the use of only one layer of sheathing on one side from Knauf-Fireboard have a fire resistance limit of 90 minutes. Thus, in the structures of partitions with two-layer plating, the Knauf-Fireboard does not collapse within an hour and a half, which allows solving the main problem: to restrain the spread of fire and thereby ensure the possibility of evacuating people.
If necessary, using KNAUF-Fireboard plates with a thickness of 20 mm, structures with higher fire resistance limits can be created. In the tests carried out, the lowest density mineral wool was specially used, so that the sheet material took the main load.
Already today you can buy innovative high-tech boards Knauf-Fireboard, produced in Russia on the latest equipment of LLC "KNAUF GIPS NOVOMOSKOVSK". Consistently high product quality is traditional for Knauf.
North-West Sales Directorate of Knauf
St. Petersburg, Vyborgskaya nab., 61, office. 304
Tel./fax: (812) 718 81 94
E-mail: [email protected]
www.knauf.ru
Training center "KNAUF North-West"
St. Petersburg, st. Egorova, 5/8
Tel.: (812) 495 35 11
Fax: (812) 495 35 12
E-mail: [email protected]
