FAQs about EAp2 :

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?

Our project has a diesel backup generator. Should we include it in our energy model?

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?

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Forum discussion

NC-2009 EAp2:Minimum Energy Performance

ASHRAE Manditory Requirements Insulation

Hello, Is there a guide or list somewhere as to what materials are acceptable to use for insulation? We want to know what options we can use. Thanks. John

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Sun, 08/04/2013 - 01:11

For further clarification, our architect is proposing that all project roofs over interior spaces are buffered by planting medium for the green roofs. Other areas such as the overhangs, typically, are covered by a layer of gravel which should also give some form of cover to direct sunlight on the rc roofs. Would this qualify as insulation for ASHRAE mandatory requirements?

Sun, 08/04/2013 - 22:50

Not the materials themselves just their characteristics. Planting medium or gravel do not qualify as insulation IMO. See Section 5.8.1 which requires a rated R-value and is mandatory (see 5.4.1). Gravel certainly has no R-value. The R-value of planting medium changes depending on if it is wet or not and even when dry it is negligible so I do not think you will find a rating. Overhangs do not need to be insulated.

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