Sie müssen Brand Viagra nur bei derviagra apothekeViagra Brand ist für jene Patienten nicht angezeigt, die eine andere Medizin gegen

Cialis is cheaper than brand pills, and you can always afford normal treatmentcialis onlineCialis online simply place your order, use your credit card to pay for your pillscialistaking erection pills to support your compromised erectile function (you will not have to take Cialis for the rest of your life.There is only one place to play from Online Casinos.casinoPlay Online Slots.Usually the recommended dose is 50 mg Viagra.ViagraViagra 100mg

Results of the LEED Design Charrette

by Chad Ludeman on March 6, 2008 · 6 comments

in Design,Green Programs,LEED,process

So I just returned from today’s LEED Design Charrette and everything went very well. The bottom line is that we found out that reaching Platinum is possible with our design, but we have a few issues to clarify and iron out. Rob from MaGrann was extremely knowledgeable and taught us all a lot about the LEED process in the matter of a few hours.

Rob tallied a total target score of 87.5 points that would enable us to achieve LEED Platinum. Our square footage for the 100K House is just over 1,100 sf so we need a total score of 84.0 to reach LEED Platinum once the thresholds are adjusted for our home. There are two major hurdles we must pass in order to achieve this target score though.

  1. We must hit a HERS Index of 50 or below
  2. We must get credit for having a 2 bedroom home with our open floorplan

Achieving a HERS rating of 50 or below means that our home will be 50% more energy efficient than code or half way to being a zero energy home. Energy Star only requires a rating of 85 so we are significantly below this. The HERS Index works on a sliding scale with 100 being a standard home built to code and 0 equals a home that is zero energy. Each point represents 1 percentage point better than a code home in terms of energy efficiency. Getting a score of 50 is no easy task without a PV or small wind system to generate power but it is possible.

One of the things that is hurting us in the current design is the fact that we have spec’ed out a full electric house. While this simplifies the home, reduces the cost and allows us to convert to a truly zero energy home in the future, it is less energy efficient than using gas for water heating. For this reason, we are pretty sure that we will need to squeeze a solar thermal system into the budget. Other things that could be tweaked include the SIPs (going with thicker panels for higher R-Values) and the windows (lower U-Values). Either of these last two should not hit the budget too hard if we only need a minor push to get us over the edge. Alternatively we will need to consider gas for the water heating.

The other hurdle is getting the LEED raters to consider our plan to be a 2 bedroom home. According to code each bedroom must be a separate, closed off room with it’s own door and a closet. Our bedrooms do have closets but they lack doors. Even more troubling is that both bedrooms are open to the ground floor even if it is a small opening. If we are only considered a one bedroom home then our Platinum target rises to 95.5 based on our square footage and we are no longer within reach of the highest, shiny rating the USGBC offers.

The two bedroom dilemma is most disconcerting to us as we purposely designed the open spaces to facilitate natural airflow. This allows us to keep our HVAC system very simple, efficient and cost-effective. To remove those elements, destroys the design we worked so hard to create and the associated efficiencies. It also becomes a much more traditional home that will not have nearly the same appeal to those seeking modern architecture and design. Our main hope here is to submit a Criteria Requirement Interpretation (CRI) request to determine if the USGBC will interpret our home as two bedrooms regardless of what code says. Rob from MaGrann will be helping us out with this but the response time is not very fast, so we may not have an answer to this critical answer for some time.

So now the top priorities are to get our HERS form filled out with all of the current design elements and see where we stand. Rob will also begin investigating the probability of our home being considered two bedrooms also. Once we have more insight into these two issues, we should have a good idea if we can tweak our design into the platinum realm without exceeding out tight budget. Either way, I’m pretty excited as I never thought we would be able to even approach platinum on such a meager budget!

If you enjoyed reading this post I can promise you'll love our new writing over at Postgreen Homes. Yeah, we know that's the same thing your favorite band said and their new album is nowhere near as good as their early stuff, but seriously, we are actually still getting better.

There also isn't much conversation to be had here . . . at least not with us. So come on over to the Postgreen Homes Blog and tell us what you think of our new(ish) digs and crazy ideas. We will be sure to tell you what we think of your opinion.

{ 1 trackback }

HERS Index Rating Initial Evaluation Results |
April 7, 2008 at 2:00 pm

{ 5 comments… read them below or add one }

1 chad March 6, 2008 at 11:45 pm

From the LEED for Homes Rating System:

“A ‘bedroom’, for purposes of this adjustment, is any room or space that could be used or is intended to be used for sleeping purposes and meets local fire and building code requirements. It is advantageous to count as bedrooms all rooms that meet this definition. When in doubt, consider whether the room in question might be used as a bedroom if another member were added to the househould (e.g. new baby, nanny, grandparent, exchange student); if the answer is yes, count the room as a bedroom.”

2 lavardera March 7, 2008 at 12:42 am

I hope they cut you slack on the bedroom interpretation – you head is obviously in the right place.

3 chad March 7, 2008 at 1:23 am

Thanks Greg. I am cautiously optimistic.

4 Rob March 9, 2008 at 11:41 pm


My opinion is keep the house the way it is, in reference to the two bedroom problem. LEED is imperfect and does not yet address all of the issues related to green building. Your design in fact might be greener than a LEED compliant design. I say take the high road even if it means LEED gold, which is still relativly incredible considering your budget. Your design is very forward thinking in my mind, trying to address the problems in very inovative way.

5 Paulo March 19, 2008 at 1:06 pm

Hey Rob, I absolutely agree with you.
The funny thing here is that maybe a lower than platinum home could mean that maybe it is more interesting in its design, and I think thats not the idea!.
I think this 2 bedroom problem should not be difficult to solve, if under the “Innovation and Design Process” credit, this home can earn points in “innovative/regional design”

Leave a Comment

Previous post:

Next post: