We are going to demonstrate the compliance with the prerequisite using OPTION 2. CEN STANDARDS EN 15251–2007 AND EN 13779–2007. According to those standards, no mechanical ventilation is needed in the parking garage. Can we avoid mechanical ventilation in the parking garage? In that case, shall the parking garage comply with the requirements for natural ventilation of ASHRAE 62.1?

It seems that “v2009_IEQ Space Matrix_April 2015” and Reference guide don’t mention parking garage.

Best Regards