Building Envelope Area Definition

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    Veronica Ruiz

    Hi Eoin,

     

    The term Building Envelope also refers to the area of a lot limited by setbacks, and sometimes it also defines max buildable heights. 

    Below is a link to the zoning code of the Town of Hillsborough in CA as an example of this:

    Take a look at the following chapter / section: 17.28.010 - Building envelope.

    https://library.municode.com/ca/hillsborough/codes/code_of_ordinances?nodeId=TIT17ZO_CH17.28HELI_17.28.030REWA

     

    hope this helps!

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    Mark Baker

    This is a helpful note.

    Building Envelope Area - can mean:

    The actual BUILT building walls floors and roof that compose the entire building

    The POTENTIAL area that can legally be built upon on a site

    Mark

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    Kirill Ryadchenko

    Eoin Byrne I know the question in Black Spectacle you're talking about. It's a case study one of a villa on top of a hill. I got confused by this question as well. In that question they call "Building Envelope" what is actually a footprint of the building. I also started calculating an area of an envelope of a building. I think it is wrong use of term. In my 5 years of practice I never saw a footprint of a building being called an area of an envelope. Area of an envelope is a sum of all areas of exterior walls. So I'm with you on that one.

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    Christopher Hopstock

    Hi Eoin and Kirill -

    We agree that the previous terminology was a bit confusing. We've since rewritten this case study (and all of our case studies, actually), so this question has been retired. Good luck in your studies and thanks for choosing Black Spectacles!

    Chris Hopstock RA
    Black Spectacles
    ARE Community

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    Kirill Ryadchenko

    Christopher Hopstock, There is another wrong answer in Black Spectacles. This time in PPD, second exam. There is a question in case study about the required amount of accessible entrances to the building according to IBC. Black Spectacles saying that one accessible entrance is enough, while the correct answer is 60% of all the entrances. Could you also fix that questions. Otherwise people studying from Black Spectacle will walk into the ARE exam believing that one accessible entrance is enough.

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    Christopher Hopstock

    Hi Kirill - thanks for bringing this to our attention!

    The question you reference is a case study, where we provide a code excerpt that includes IBC 1104.1.  It does not provide IBC 1105 or ADA as a reference, which is why the answer to that case study question is 'provide at least one accessible entrance'.  

    We'll revise this question so that it provides the entirety of chapter 11 instead of an excerpt, so that it's closer to a real-world example.

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