[Bldg-rate] ASHRAE 90.1 Baseline Shading Itself

[Dan Russell]

ASHRAE 90.1-2004 Appendix G Table G3.1.5(a) for Baseline Building Performance states that "...the building shall be modeled so that it does not shade itself."

 

I have a medium high rise. Bottom floor is Retail.  Next three floors are parking garage.  Rest of floors are office space.  The lowest floor essentially has a roof that is driven on by automobiles and is shaded by the parking structure.

 

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||||||||||ßOffice space (Conditioned)

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|_______|

|_______|ßParking Garage (Unconditioned)

|_______|

||||||||||ßRetail space (Conditioned)

 

For the purpose of performing energy simulation compliant with ASHRAE 90.1-2004 Appendix G, is my baseline model for the first floor required to have a roof that is fully exposed to solar gains (i.e. unshaded by the parking structure?) 

 

Thanks,

 

 Dan Russell, EIT 

 

 

 

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