Arian, The obstruction height angles are measured from the horizontal to the top of the obstruction. The plane in question (from which the height angles are measured) for the roof/ceiling is the horizontal plane. In fact, the plane in question is always horizontal, regardless of the slope of the facade in which the opening is located. kind regards, David
On 06/22/2017 05:45, Arian Bahrami via
TRNSYS-users wrote:
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