FAQs about EAp2 :

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?

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?

View answers »

Forum discussion

CS-2009 EAp2:Minimum Energy Performance

Density Lighting Exterior

Hi, we have any questions about the desnsity lighting exterior: 1.- The building is located on a corner in one of the main streets of Mexico City, the architectural design has 23 terraces which will be illuminated on the front, through computerized LEDs that can change color. Could be seen as an icon or a commercial sign and enter the ASHRAE 90.1-2007 exceptions section 9.4.5? 2.- According to ASHRAE 90.1-2007 Section 9.4.5 The total external lighting power allowance for all Applications is building outside the sum of the single lighting power densities permitted in Table 9.4.5 for These Applications plus an additional unrestricted allowance of 5% of That sum. Trade-offs are allowed only among outdoor lighting Applications listed in the Table 9.4.5 "Tradable Surfaces" section. Does the total load on outdoor lighting can be considered as valid power increase by 5%? 3.- • According to Table 9.4.5 lighting power densities for building exteriors, we are looking for lighting of terraces a factor of 0.2 w / ft 2 (square areas), for our calculations of density are we right? • According to Table 9.4.5 lighting power densities for building exteriors, we are looking for outdoor lighting of balconies in the vertical plane by a factor of 1.25 W/ft2 (canopies and overhangs), for our calculations of density are we in right? 4.- • According to ASHRAE 90.1-2007 Section 9.5.1 Building Area Method of Calculating Interior Lighting Power Allowance, allows you to: d. The interior lighting power allowance for the building is thesum of the lighting power allowances of all building area types. Trade-offs among building area types are permitted provided That the lighting inside the total installed power does not Exceed the indoor lighting power allowance. In our project interior lighting is very efficient in saving energy, being below ASHRAE 90.1-2007 parameters, can make a trade off between exterior and interior lighting?

2

You rely on LEEDuser. Can we rely on you?

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

Go premium for $15.95  »

Thu, 03/15/2012 - 13:08

1. If the fixture lights the terrace then no. 2. Yes it is 5% of the total. 3. Where is the lighting? How big are the terraces? Assuming they are relatively small and the lighting is at the door I would think that 20 W/lf of door may make more sense. 4. Exterior lighting is a mandatory provision so you cannot exceed that and comply with LEED. Interior lighting is not a mandatory provision but can be traded off with any other prescriptive area.

Add new comment

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