Use building automation systems (BAS) to control mechanical systems efficiently and maintain desired ventilation rates while minimizing unscheduled maintenance.
Wait until receiving bids to decide whether or not to pursue EAc3: Enhanced Commissioning. If you request two different fees for the two scopes, you can easily assess the cost and benefits of Enhanced Commissioning.
An independent consultant, as compared to one from the same firm as the design team, is in the best position to truly represent the owner’s interests during design and construction, including installation of key systems.
If you choose to pursue IEQc5: Indoor Chemical and Pollutant Source Control, relatively high MERV 13 filtration is required. Pursuing both credits may require you to increase duct size and fan power, and may even affect your system selection.
Naturally ventilated Core and Shell projects must provide the potential for tenant build-out to meet requirements of this credit. When documenting the credit, you can provide an assumed tenant layout and default occupancy assumptions based on the LEED Reference Guide Appendix 1 to confirm that tenant spaces meet ASHRAE-62.1 requirements.
The owner can include additional building systems in the commissioning scope, such as the building envelope, fire and safety systems, and water collection systems.
The Carbon Trust guide offers guidelines on window sizes, spacing and placement for non-residential buildings. These guidelines can be used as a great starting point to ensure sufficient fresh air is provided to the building with natural ventilation. Reference the guide early in design will help maximize benefits and ensure compliance.
