While Michigan’s Lower Peninsula remains largely unchanged from the old code (Zone 5A in the south, Zone 6A in the north), most of the Upper Peninsula has been re-categorized from Zone 7 (“Very Cold”) to Zone 6A (“Cold and Humid”). As the climate changes, building envelope and HVAC designs must react to different extremes of heat and humidity.Shifting Climate, Southern Michigan Unchanged: Peter Basso Associates’ commissioning staff work independently from design staff, and can therefore provide the service for projects designed by PBA as well as for projects designed by others.ĥ. It requires the commissioning provider to be detached from the design and construction team. ASHRAE 90.1-2019 requires formal commissioning for any projects over 10,000 sf and sets extensive requirements for which commissioning activities must be performed. The ASHRAE 90.1-2019 standard recognizes that exceptionally efficient materials and equipment are not enough – they need to be operated efficiently for peak performance.
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