CLOSED PARKING/GARAGE DEFINITION
If the total outdoor area of ​​the car parks used for the parking of motorized transportation and transportation vehicles is more than 5% of the floor area and at least half of this open area is on two opposite sides, open car park; otherwise, covered parking is accepted. In case the openings are opened to a space in the form of a corolla, the width of the said space should be at least as high as the car park floor height, and for each additional floor opening to the canopy, it should be increased by at least half the floor height.

CLOSED PARKING TYPES
Small garages up to 100 m2, medium sized up to 1000 m2, large garages of more than 10 000 m2

SIZE SIZE DETECTION
a- Size of the area According to the Parking Lot Regulation, the unit parking area for passenger cars is at least 20 m2. 25 m2 in foreign literature. This area is calculated over at least 50 m2, excluding the maneuvering area for trucks and buses.
b- Height min. 2.4 m.

5- SYSTEMS TO BE APPLIED IN CLOSED PARKING AREAS
• Ventilation
• Smoke extraction A > 2000 m2
• Sprinkler + Fire cabinet + Fire brigade water intake A > 600 m2

5.1-Closed Parking Lot/Garage Ventilation Need Toxic in the exhaust gases of combustion engines; hydrocarbons, sulfur and lead compounds, soot, oil vapor, especially carbon monoxide (CO) gas, provided that these gases are kept within acceptable limits from the garage, are the fastest evacuation of these gases or the dilution of their ratio in the ambient air.

Especially CO gas can be lethal depending on the time it acts even at low concentration.

5.2.1 Free (Natural) Ventilation For natural ventilation, cross-ventilation is provided by means of vents on two opposite walls.

Grille intervals:
In garages above ground, max. 35 meters
Max. 20 meters culverts should be arranged at intervals.

Total culvert sections:
In small garages with an area of ​​up to 100 m2, openings up to 150 cm2 per parking area in the outer doors are sufficient. 0.06 m2 per parking space in medium and large garages

5.2.2 Mechanical Ventilation Design Principles
• It should be kept under negative pressure.
• No toxic gas should be allowed to accumulate in any area. If air is supplied from outside
• Uniform and homogeneous air distribution should be made throughout the entire garage area.
• Fans are equal in size, electrical connections are independent, two fans or
• There should be more than one speed adjustable fan of equal size.
• If indoor air is supplied, preferably outside air should be used. It can be used if the air taken from other rooms is odorless, does not contain poisonous and flammable substances.
• Air sucked from places such as kitchen, shower, WC, chemical operation or storage is not allowed.
• Suctions are made from 50% ceiling and 50% ground level.

5.2.2.1 Air Flow Different methods can be used in the air flow calculation.

a- According to the number of changes: Min. number of exchanges : Blowing air per parking area (m3 /hm2 ) / h (parking height m.) 5-7 change / h acceptance value according to various literatures

b- According to the internally exhausted air flow per useful parking space: 6 m3 /h per m2 of useful parking space for residential garages (Heating + Air Conditioning Technique TTMD) 12 m3 /h per m2 of useful parking space for other garages (Heating + Air Conditioning Technique TTMD)

c- According to the CO value in the waste gases, max. 75 ppm for an hour (WHO 1987)

6-SMOKE DISCHARGE SYSTEM

• It is obligatory to install a mechanical smoke evacuation system in parking garages whose total area exceeds 2000 m2.
• The smoke evacuation system must be independent from other systems in the building.
• Air change at least 10 changes per hour.

7- CO WARNING SYSTEM

There should be CO systems for measurement, adjustment and warning in heavily trafficked parking garages. The ventilation system is activated by sensors that monitor the level of CO and CH4 (Explosive fuel gases) in the parking lot.

• The number of sensors required depends on the general plan of the car park and varies from one per 100 m2 to one per 500 m2.

• CH4 sensors are generally mounted close to the ground (about 30 cm above the ground), while CO sensors are mounted at head level (about 150 cm above the ground).