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2. Passive ventilation - Wikipedia

   en.wikipedia.org/wiki/Passive_ventilation

   A roof turbine ventilator, colloquially known as a 'Whirly Bird' is an application of wind driven ventilation. Passive ventilation is the process of supplying air to and removing air from an indoor space without using mechanical systems .

3. Ventilation (architecture) - Wikipedia

   en.wikipedia.org/wiki/Ventilation_(architecture)

   Ventilation is the intentional introduction of outdoor air into a space. Ventilation is mainly used to control indoor air quality by diluting and displacing indoor pollutants ; it can also be used to control indoor temperature, humidity, and air motion to benefit thermal comfort , satisfaction with other aspects of the indoor environment, or ...

4. List of commercially available roofing materials - Wikipedia

   en.wikipedia.org/wiki/List_of_commercially...

   Roofing material is the outermost layer on the roof of a building, sometimes self-supporting, but generally supported by an underlying structure. A building's roofing material provides shelter from the natural elements. The outer layer of a roof shows great variation dependent upon availability of material, and the nature of the supporting ...

5. Heat and smoke vent - Wikipedia

   en.wikipedia.org/wiki/Heat_and_smoke_vent

   The majority of guidance available for design of heat and smoke building vents installed in buildings is restricted to nonsprinklered, single-story buildings. [4] This is partly a historical consequence of the installation of heat and smoke vents following the August 1953 General Motors, Livonia, MI major fire in a nonsprinklered manufacturing facility which effectively stopped the production ...

6. Drain-waste-vent system - Wikipedia

   en.wikipedia.org/wiki/Drain-waste-vent_system

   A sewer pipe is normally at neutral air pressure compared to the surrounding atmosphere.When a column of waste water flows through a pipe, it compresses air ahead of it in the system, creating a positive pressure that must be released so it does not push back on the waste stream and downstream traps, slow drainage, and induce potential clogs.

7. Why OPEC's grip on oil markets will continue to weaken in 2025

   www.aol.com/why-opecs-grip-oil-markets-193512699...

   OPEC+ faces a major oil oversupply in 2025, challenging production increases. The coalition has tried to boost oil prices by holding back output. Instead, members are ceding control to non-OPEC ...