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Smoke Management System for Atrium_Balcony Spill Plume

Question asked by jin.k on Aug 6, 2019
Latest reply on Oct 2, 2019 by jin.k

In case of Balcony Spill Plume, the equivalent width of plume shall be calculated as per NFPA 92 2015Ed, 5.5.2.7.

This plume width is a governing parameter of calculated mass flow rate for balcony spill plume by algebraic equation, I think.

However, the distance from opening to bacony edge, b, can be a disputable parameter considering shape of balcony edge and location of opening as attched.

 

Would you please give me any guidance how to measure the distance of b or an alternative method like 45 degree angle from opening edge to estimate plume width for unchannelled smoke?

 

Thanks in advance.

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