Part 1: Architect’s Guide 1 - 48 Figure 6.5 Smoke extractor 6.2.6 Other requirements National regulations also define requirements for: Facilitating evacuation of occupants (number and size of exits) Protection of individuals (containment of fire, confinement of smoke and smoke evacuation, emergency exits, legibility of escape routes, duration of building stability for evacuation purposes) Response by emergency services (access to building, safety standards, training). 6.3 Acoustic performance 6.3.1 General remarks In order to ensure an acceptable degree of acoustic comfort, national regulations draw up requirements in accordance with building end-use. The occupants of a building must be protected from different noises: Airborne noise: vibrations which begin in the air. This is the sound of voices or internal and airborne ambient noise, or road traffic as external airborne noise Structure-borne noise: resulting from shock and solid-borne vibrations. These are the sounds of footsteps, fallen objects, impact. Noise from equipment: generated by the operation of equipment, these are air-borne vibrations emitted through their media. These are the sounds of ventilation, heating, sanitary appliances. The transmission of noise from the outside to a room, or from one room to another, occurs through vibration. This can be distinguished as: Direct transmission: through the wall which separates the receiving from the originating area. Lateral transfer: through the walls which are connected to the partitioning wall Parasitic transmissions: these result from single points in the partition wall (air intakes, ducts or installation defects).
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