[Bldg-sim] LEED 2009 vs LEED V4

James Hansen JHANSEN at ghtltd.com
Wed Apr 9 13:37:07 PDT 2014

Is this LEED-CI, or NC/CS/etc?  Modeling for LEED-CI under v4 is an
entirely different animal.  NC/CS not as much so.


90.1-2010 requires auto-receptacle control, daylight harvesting for
zones with > 250 SF of window area, etc.  Lots of control changes like
that, but nothing that would make you redo the basic structure of an
NC/CS model. 


GHT Limited

James Hansen, PE, LEED AP, BEMP

Senior Associate

1110 N. Glebe Road, Suite 300

Arlington, VA 22201

703.243.1200 (main)

703.338.5754 (direct/cell)

www.ghtltd.com <http://www.ghtltd.com> 


From: bldg-sim-bounces at lists.onebuilding.org
[mailto:bldg-sim-bounces at lists.onebuilding.org] On Behalf Of Nicholas
Sent: Wednesday, April 09, 2014 4:31 PM
To: bldg-sim at lists.onebuilding.org
Subject: [Bldg-sim] LEED 2009 vs LEED V4




I am trying to determine the impact of switching an already built energy
model which follows ASHRAE 90.1 2007 (LEED 2009) to ASHRAE 90.1 2010
(LEED V4). 


I know that at face value, this will likely negatively impact the
percent energy cost savings that I have been able to show. The LEED V4
point-system is different, so it might not impact the savings quite so


Any advice or quick thoughts? 


Much appreciated, 


Nicholas E Blanton LEED AP BD+C 

Mechanical Engineer 



1120 Connecticut Avenue NW  Suite 1110  Washington DC 20036  USA 

t +1 202 729 8220    d +1 202 729 8241 

m +1 505 228 4154 

www.arup.com <http://www.arup.com/>  


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