Superseding the 2011 version, ANSI/ASHRAE/USGBC/IES Standard 189.1-2014, Standard for the Design of High Performance Green Buildings Except Low-Rise Residential Buildings, now has 67 new additions to the areas of site sustainability, water use efficiency, energy efficiency, indoor environmental quality, and the building’s impact on the atmosphere, materials, and resources.
According to a press release by ASHRAE, the changes include:
Energy: Revised building envelope provisions. Updates to equipment efficiency tables, and ENERGYSTAR references.
Energy Performance, Carbon Dioxide Emissions, and Renewables: Carbon dioxide emissions factors updated for different energy sources.
Indoor Environmental Quality: Lighting quality is added to the scope of this section. This includes lighting controls requirements for different space types.
Site Sustainability: All site requirements are now mandatory. Enhanced requirements for stormwater management, bicycle and low emission vehicle parking.
Water: More stringent water use requirements for toilets, clothes washers, dishwashers, and green roofs.
Building Impacts on the Atmosphere, Materials, and Resources: Updated requirements for construction waste management, and collecting and storing recyclables, including batteries and electronics. New requirement for maximum mercury content levels of certain types of electric lamps.
Construction and Plans for Operation: New requirements added to reduce the entry of airborne contaminants associated with construction areas.