See all forum discussions about Schools-2009 EAp2
 Subscribe to new posts about Schools-2009 EAp2 Post a new question aboutSchools-2009 EAp2
See LEEDuser’s guidance on Schools-2009 EAp2»
FAQs about EAp2 :

Our project has a large process load—75%. Despite our efforts to make an efficient HVAC design, the cost savings are minimal. What can we do to earn this prerequisite and be eligible for LEED certification? Is there any flexibility in how we model the p

Can SHGC be higher in the proposed than in the baseline model?

Our process load is higher than 25%. Do we have to justify that?

Do I need to justify the electrical and fuel rates I am using in my model?

Our local code references ASHRAE 90.1-2010. Should I use that for my documentation, or 90.1-2007?

Can I claim exterior lighting savings for canopy lighting even though a baseline model cannot include shading elements?

The project is built on a site with existing exterior lighting installed. How should this be accounted for?

Can mezzanines open to floors below be excluded from the energy model?

How do I provide a zip code for an international location?

For a project outside the U.S., how do I determine the climate zone?

For a project outside the U.S., how do I determine the Target Finder score?

Do hotel rooms need automatic light shut-off control?

How commonly are the 90.1 mandatory compliance forms submitted as part of EAp2/EAc1?

The Section 9 space-by-space method does not include residential space types. What should I use?

Can the Passive House Planning Package (PHPP) be used to energy model for LEED?

Is it acceptable to model a split-type AC with inverter technology compressor as a heat pump, like modeling VRF?

Can the Trace 700 'LEED Energy Performance Summary Report' by uploaded to LEED Online in lieu of the Section 1.4 tables spreadsheet?

A portion of our building envelope is historic. Can we exclude it from our model?

Which baseline HVAC system do I use if my building has no heating or air conditioning?

For an existing building, do I need to rotate the model?

View answers »

Forum discussion

Schools-2009 EAp2:Minimum Energy Performance

Section Table 1.4.2B- Fenestration

when the frame effects are captured within the energy modeling software option the output results for vertical glazing assembly U value will vary based on window size. due to the frame effect.So which value we should enter in the Table 1.4.2B- Fenestration ? or we can enter center of glass U value ? instead of Assembly U value & put additional note that we have used separate frame & glazing inputs in energy simulation with frame details.

0
Post a reply

You rely on LEEDuser. Can we rely on you?

LEEDuser is supported by our premium members, not by advertisers.

Go premium for $15.95  »

Profile picture for user sheffer
Marcus Sheffer
LEED Fellow
7group / Energy Opportunities
LEEDuser Expert
4454 thumbs up

Wed, 05/24/2017 - 18:32

I would enter the weighted average U-value of all the windows. This is what the reviewer wants to see. I frequently see the glass and frames separated in the modeling software but the end result is not accurate.
Profile picture for user Marais.Jean
Jean Marais
b.i.g. Bechtold DesignBuilder Expert
LEEDuser Basic Member
581 thumbs up

Wed, 05/24/2017 - 18:45

If your software does not calculate the assembly (frame + glazing) resulting rated u-value according to NFRC (ISO 15099), then use another software like WINDOW from LBNL. This will show you the "rated" assembly u-value. If you are trying to input the parameters into the program, do so, so that the assembly "rated" u-value is correct. A good trick for energyplus, is to use WINDOW to help generate the idf code required. This is typical for the baseline. It's a bit itterative changing glazing and framing parameters until the calculated assembly rated u-value is what you require it to be. Good luck.

Add new comment

To post a comment, you need to register for a LEEDuser Basic membership (free) or login to your existing profile.