Forum discussion

NC-2009 IEQc6.1:Controllability of Systems—Lighting

LEED online template update

Lauren, IEQc6.1 leed online template v4.0 states " Simple on/off switches may only count toward credit compliance for private offices" under the individual controls." This is a new requirement that I haven't seen before. I am working on a residential tower and all bedrooms currently only have a on/off switch. Any ideas on how to achieve this credit if on/off switches will not comply? Thanks, Crissy

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Mon, 02/25/2013 - 23:47

Crissy, I think that statement is confusing, but reading into it a bit, I think it does not exclude bedrooms. I think the statement is intended to draw a contrast with multi-occupant spaces in offices.

Tue, 02/26/2013 - 20:15

Hi Crissy, I agree that it's a bit confusing. It's not meant to be a new requirement. I think it's just trying to discourage folks from thinking that one light switch in an open office work environment will suffice. In the case of a bedroom, if you have one light switch then that would count as one control per person. So if there is one person in that bedroom, and one light switch, then that should be sufficient. Here are a couple other discussions that you might find interesting: http://www.leeduser.com/credit/NC-2009/IEQc6.1?page=0#comment-20448 http://www.leeduser.com/credit/NC-2009/IEQc6.1?page=0#comment-35057 Also, the IEQ Space Matrix has specific residential guidance: http://www.usgbc.org/ShowFile.aspx?DocumentID=10539

Tue, 02/26/2013 - 20:19

Specific language from the IEQ Matrix might be helpful. The matrix states that bedrooms are regularly occupied and "individual occupant spaces" and not "multi-occupant spaces". 1. For Credit scope (row 6) for IEQc6.1/IEQc6/2/IEQc6(CS)- revised residential language as follows: Residential spaces- all individual and multi-occupant spaces (includes regularly and non-regularly occupied, each space must have its own individual lighting control to be counted towards the credit, each unit must have its own thermal control to be counted towards the credit). 2. For Health Care Facilities, Labor rooms- added x in multi-occupant column. 3. For Health Care Facilties, Delivery areas- revised individual occupant to multi-occupant. 4. For Health Care Facilties, Occupational and physical therapy, work areas- revised individual occupant to multi-occupant. 5. For Health Care Facilties, Recovery areas, revised individual occupant to multi-occupant. 6. For Hotels, Front desk (row 107), added x in multi-occupant column (column F). 7. For Houses of Worship- Congregational Areas, added reference to footnote 2. 8. For Libraries, Bookstacks- added inactive and active categories. 9. For Residences, new bedroom category. 10. For Residences, Conversation, relaxation and entertainment- revised individual occupant to multi-occupant. 11. For Residences, Reading and study areas- revised from multi-occupant to individual occupant. 12. For Residences, Circulation- removed multi-occupant. 13. For Residences, Grooming- added individual occupant. 14. For Residences, Kitchens- revised individual occupant to multi-occupant. 15. For Transportation Terminals - added reference to footnote 2.

Thu, 06/13/2013 - 18:45

Tristan, Lauren...or anyone else. In a multi-occupant office space (in this case there will be two workstations), does providing two switches - one near each workstation comply with the credit intent? If not, what if there were two ceiling fixtures, and two switches - one switch next to each workstation, controlling one light? Thanks!

Fri, 06/14/2013 - 17:19

Hi Ryan, Do the two light switches provide separate control and light for each workstation? My hunch, based off of the description, is that they do not. In the second scenario it sounds like they each don't have control because they only have one light. The intent of the credit is to provide specific controllability to occupants. You could possibly argue that half of your individual occupants have controllability in this scenario.

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