They are made of gypsum concrete, sawdust concrete, concrete, slag concrete and so on. Partitions of this type are fireproof and at the same time heavy. They are used in non-combustible buildings made of concrete, brick and similar materials. The thickness of such partitions varies from 5 to 15 cm.Sometimes partitions made of gypsum dust are installed in wooden buildings..
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They must be installed on a beam or foundation. To make the partitions more durable, a frame made of wood or metal is installed in them. It is placed between the ceiling, walls and the beam, and then fixed. When in the partition of the door the box for it is installed between two pillars and nailed, then it is necessary to fix and tie them well with reinforcement, which is attached to the frame.
The armature can be taken from wood peeled willow rods and wire from 3 to 7 mm in diameter. It should be located horizontally or vertically, keeping a distance of 15 — 25 cm, or cells with cells with dimensions of 15 x 15 and 25 x 25 cm.At the points of their intersection, any type of reinforcement must be tied with wire.
The formwork for it is created from plywood, boards, thick durable cardboard, fiberboards.