The closed protecting designs reduce expenses for garage heating, the device of special ventilation however demand: for removal of the fulfilled gases, especially in regular, peak loadings when the average level of the maintenance of carbonic oxide makes about 100 cm3/m3. This problem remains for basement floors and underground constructions. The powerful artificial forced-air and exhaust ventilation becomes unnecessary when cars are transported to places of parking and back by means of mechanical devices as thus engines of cars are switched off.

Usually in external walls of the closed garages apertures for the natural ventilation which is carried out by means of motionless or mobile window shutters, fans with mobile or motionless jalousie, including established on windows etc. are provided. It is expedient to motionless glass or other similar protections to give a bias, is better inside, or to leave over a floor or a parapet and under a ceiling a sufficient backlash for air circulation if the part or all protecting elements have no inclination within floor height. At performance of all apertures and ventilating devices it is necessary to watch, that the surrounding city: environment was not exposed to harmful influences.

Usually in open garages both bearing external walls (if they are) are carried out in the form of fireproof walls. If the height of the top side of a covering of garage over a surface of the ground does not exceed 12 m on the open parties of a building for prevention of falling of cars parapets or protections from nonflammable materials in height of 90 cm are established, and at the height exceeding 12 m, — not less than 1,1 m. In certain cases is provided facing which, creating optical effect of “isolation”, does not reduce positive properties of open facades.

The open or having apertures parapets and protections should come to the end with console reflectors of a flame detaining fire in length not less than 50 cm. Flame reflectors also it is necessary to establish on distance of 1,0 m from hand-rail or parapets at an inclined design of fire-prevention transitions. As a flame reflector the console ledge of a covering or a parapet with a return bias at an external side of a plate also can serve.

Instead of hand-rail and high-powered shock absorbers in some open garages of the USA between floors steel cables proof to corrosion with step of 20 cm are tense; their advantage consists in ability is elastic to be deformed at blow that protects the car from damages and reduces loadings on a wall.
In other cases even before the closed external walls it is recommended to provide shock absorbers, sides or protecting borders.

Bearing internal walls usually are carried out in the form of massive designs. If they do not bear static functions and do not serve as fireproof walls are often intended only for a protection of a staircase and elevator mines, and also auxiliary premises, such, as toilets, etc.

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