There is quite an issue of concern on LRV weighted average calculations on our project per the EQc6 credit, as the project team requires an urgent response to this, please see details below:
Background Information
With regards the EQc6 - Interior Lighting credit (Surface Reflectance: Strategies E & F), In calculating or determining the final weighted average Light Reflectance Value (LRV) for the Regularly Occupied Spaces (ROS) in a mixed-use light industrial building complex, comprising of the Administrative offices, Control Centre and Maintenance/ Welding shop areas. All of these adequately fall under the category of ROS.
QUESTION:
A challenge has been met in calculations regarding the ceiling LRV weighted average as the Maintenance/ Welding shop area, made up of a double volume high roof zone has no ceiling installed and accounts for about 25% of the ROS calculation.
The administrative offices and control center areas account for the rest and have ceilings meeting the 85% LRV; in this situation I believe it is fair to exclude this section of the building as the NO ceiling or Exposed ceiling characteristics can not be defined as having to contribute towards the ROS count, since the requirement is 90% ROS contribution.
Now another challenge is finding a balance, as the Walls and floors adequately have materials that contribute favorably to the ROS requirements.
Thank you all as always for your insightful and timely assistance.
Afogreen Build
www.afogreenbuild.comGreen Building Consultant
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September 10, 2020 - 12:17 pm
Dear Olawale,
There is no exception to non-false ceiling from this credit. There is no ceiling installed, but certainly a room has ceiling (ceiling can be the bottom of floor slab of the floor above that room). A room surely has floor, walls and ceiling. At least 90% of ceiling of regularly occupied space shall be included in LEED calculator. You can exclude up to 10% of ceiling of regularly occupied space in calculation.