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  2. Uniform Mechanical Code - Wikipedia

    en.wikipedia.org/wiki/Uniform_Mechanical_Code

    Two years later, the city adopted the first version of a uniform plumbing and mechanical code developed by the Los Angeles City Plumbing Inspectors Association (LACPIA) and based on the input from a committee of plumbing inspectors, master and journeyman plumbers, and mechanical engineers, assisted by public utility companies and the plumbing ...

  3. Heating, ventilation, and air conditioning - Wikipedia

    en.wikipedia.org/wiki/Heating,_ventilation,_and...

    Ventilation on the downdraught system, by impulsion, or the 'plenum' principle, applied to schoolrooms (1899) Natural ventilation is the ventilation of a building with outside air without using fans or other mechanical systems. It can be via operable windows, louvers, or trickle vents when spaces are small and the architecture permits.

  4. Plenum space - Wikipedia

    en.wikipedia.org/wiki/Plenum_space

    A commercial building with a plenum airspace. A non-fully insulated HVAC plenum created by accident can go unnoticed and become a fire hazard due to cabling installed under the assumption that this will always be a fully enclosed plenum. In the event of a fire, this can expose non-fire resistant building materials to heat.

  5. Dedicated outdoor air system - Wikipedia

    en.wikipedia.org/wiki/Dedicated_outdoor_air_system

    DOAS air handling unit with heat recovery wheel and passive dehumidification. A dedicated outdoor air system (DOAS) is a type of heating, ventilation and air-conditioning system that consists of two parallel systems: a dedicated system for delivering outdoor air ventilation that handles both the latent and sensible loads of conditioning the ventilation air, and a parallel system to handle the ...

  6. Mixed-use development - Wikipedia

    en.wikipedia.org/wiki/Mixed-use_development

    Within the City of Toronto's zoning by-laws, commercial residential includes "a range of commercial, residential and institutional uses, as well as parks." [ 32 ] Mirvish Village's programmatic uses include rental apartments, a public market, and small-unit retail, [ 33 ] while also preserving 23 of 27 heritage houses on site. [ 34 ]

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