The supply pipe.

Calculation

Number, purpose, height of the premises, multiplicity (volume and frequency) of air exchange and number of residents are very important conditions when installing ventilation. According to these indicators, a calculation is made: cross -section, length, location and number of air ducts, as well as presence/exhaust). Installation of pipes (boxes) must be started from below and drive up, from the lower floor to exit to the roof. Installation. Its start should be located under the basement ceiling and rises throughout the height of the structure with access to the roof. Its lower part is equipped with a crane and a capacitor to remove humidity. The minimum allowed pipe height above the skate 30 cm. All sections of the pipe located outside the house are subject to compulsory insulation. The supply pipe. It begins above the floor level (4050 cm) and is excreted through the base, to the street. Its external part is obliged to be 1.5 m from the soil.