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Unit 3. Security Services - Coggle Diagram

- - - - 1.Access route
        
        The output itself
        3.The output evaluation path
- - - - and our obligations are
        
        be cautious, being aware that a pedestrian or cyclist may appear, an animal may cross our path, another vehicle may appear unexpectedly at an intersection, we may face a fog bank, at night, we may meet another vehicle head-on, by surprise, trying to overtake a truck, there may be a vehicle parked in the fog, without lights or beacons, a tire blowout, a very sharp curve poorly signaled, among many other incidents.
  - - - Remember that you are traveling at 120 kph. in your car, which forces you to be foresighted.
        You, your family and your vehicle must be able to face some of the risky situations that you will surely encounter along the way.
- - - - Thus, fire can spread to the rest of the building according to the following conditioning factors:
        
        Vertical propagation:
        
        Stairwells (chimney effect).
        
        Combustible doors.
        
        Elevator shafts (chimney effect).
        
        Installation ducts (chimney effect).
        
        Lack of exterior fire walls by facades other unprotected openings.
        
        Horizontal propagation:
        
        lack or defect of fire walls.
        
        unprotected openings in walls.
        
        poorly designed or installed fire doors (or lack thereof).
        
        lack of smoke barriers
        
        lack of fire sectorization
        
        external propagation
        
        Content and exterior finishes:
        
        combustible decorations and furniture.
        
        carpeting / draperies.
        
        combustible liquids and flammable gases in containers.
        
        combustible decorative finishes on floors, ceilings and walls.
  - - - Load-bearing or structural:
        
        When they are part of the resistant structure of the building separators or enclosures: those that separate or separate some sectors from others separators-bearers: when they fulfill this double function.
        
        When a fire develops, the behavior of the set of construction elements is of utmost importance. As the temperature rises, they will begin to progressively lose their rigidity and resistance, thus affecting the structure, which may even collapse.
        
        This behavior will depend on the material of which the elements are made: steel expands, distorts and yields with increasing temperature, while concrete loses its water of hydration, contracting, cracking and fissuring.
      - Finishing materials
        
        The fire behavior of the construction and finishing materials that make up a building's interior (roofs, walls, floors) is what will determine the initiation and propagation of a fire. This behavior is called reaction to fire, and measures to what extent a material contributes to the initiation, development and propagation of fire, considering properties such as flammability, combustibility, combustion speed, etc.
      - Fire resistance
        
        It is the capacity of a given material to resist or contain a fire, in other words, the ability of a construction element to maintain -during a fire- the following characteristics:
        
        Structural stability.
        
        Flame tightness.
        
        Thermal insulation.