Importance affects the rigidity of gender, has a step laying the lag, the amount of timber used for the lag. The optimal distance for the office and residential space – up to 700 mm. For technical – should be regarded as the load, but by 400 mm. (A valuable related resource: Toshiba). Timber must be treated ognebiozaschitnoy impregnation. Its dimensions shall be not less than 150 * 50 mm. Sony does not necessarily agree. At what he "put" vertically (150 mm in height). Go to lag below attached sheet metal (black, thin metal, primed or painted).
Sometimes producer uses a metal medium thickness (1-2 mm.) which are hermetically welded (budget module does not apply, because his (metal) at the bottom just do not – there is the bare board). On the joists laid floorboards. It may not be edged, but without the wane (bark) and treated with a solution ognebiozaschitnym thickness from 25 to 40 mm. It fits neatly together. Above it is laid sheets DSPs (16 mm. Thickness) or water-resistant plywood.
Other materials (Thin dsp, dsp, just plywood is cheaper, but they quickly gain moisture and become unusable). At DSPs fit linoleum. Insulation sex – thick mineral wool laid in accordance with regional estimates of 100 to 250 mm. (Usually 50 mm. thicker walls) and has a polyethylene vapor barrier. As should be properly and securely? On every element of sex can save – place less often lags – the floor will be a little play, but endure, put floor board with a gap – in generally okay, but it may eventually deform the dsp, or a heavy table leg will fall, for example.