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Joanna
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Posted: Sat Aug 9th, 2008 03:59 pm |
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Can anyone please tell me what is the difference of these? Please advise with example.
1. passive solar and active solar - EA Cr.2
2. process energy and non-process energy - EA Cr.1
Another question is regarding EQ Cr.4.1 - "Aerosol Adhesives must meet or exceed Green Seal GS #36", is this correct? I think it shoule not exceed GS #36.
Thank you very much.
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xcentric
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Posted: Sat Aug 9th, 2008 06:34 pm |
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1. Passive solar methods are ones that use solar energy to heat the desired space relatively directly including southern windows, increased thermal mass, ventillation by chimney effect, and I think trombe walls also fall in this category.
Active solar are methods that have a collector that replaces standard equipment. Either a hot water collector in lieu of a boiler, or photovoltaics that collect electricity.
2. Process energy is energy uses that are generally not regulated by ASHRAE 90.1-2004. Generally these are things plugged into wall recepticles which can be changed by the occupants. Oh, and elevators.
Process energy (not regulated) includes but is not limited to office equipment, computers, elevators and escalators, kitchen cooking and refrigeration, laundry, lighting exempt from the lighting power allowance (lighting integral to medical equipment, theatrical lighting, food heat lamps), and other (waterfall pumps). [paraphrased from LEED-NC v2.2 Reference guide, page 182 in my old edition]
Non-process energy (regulated) includes installed lighting, most HVAC equipment (AC or chiller, furnace or boiler, including associated fans and pumps), domestic hot water boilers.
3. By exceeding GS#36, I think they just mean "better than GS#36", which in this case is a lower level of VOCs. I've also heard this phrasing in terms of lighting where you can exceed the code requirements by having a lower lighting power density (Watts/sf). Yes, it a confusing way to say it.
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msuitc
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Posted: Sun Aug 10th, 2008 12:58 am |
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thanks for the great questions and answers!!
cleared things up for me.
do space coolers/heaters fall under non-regulated(process) energy?
thanks again!
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Joanna
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Posted: Mon Aug 11th, 2008 10:53 pm |
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Thank you very much for the answer. It helps a lot for me to understand well.
I have few more questions. 
1. On-site Renewable energy in EA Credit 1
under "Calculations" - On-site Renewable Energy and Site -Recovered Energy cost are not included in the Proposed Building Performance; therefore these systems receive full credit useing the Performance Rating Mathod.
I have no idea what it is about. What is the "full credit " refer to? Does it mean Renewable and recover energy cost is not eligible for credit C1 but eligible for C2? Please adcise.
2. LEED -NC Application - Two-phase Application
if a credit required to submit at Construction submittal per reference guide (like EA credit 6), can it be submitted at the end of design phase for review by USGBC?
Many thanks
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xcentric
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Posted: Mon Aug 11th, 2008 11:39 pm |
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Joanna,
1. EAcr1 is referring to the calculations in Appendix G (of ASHRAE 90.1-2004). There are several methods described in this appendix on how to model the energy usage of your building as well as how to model a baseline building. Actually most of the instructions are about the baseline. "Full credit" here refers to how much of your renewable energy counts towards the 14%+ energy costs savings you are trying to achieve. Using one method, it doesn't count, using the other, it does. Depending on the how much your renewable energy source costs, this may or may not be an advantage.
The method of energy modeling doesn't affect whether you can count it towards Cr2, but I believe you have to use the same annual energy cost for your building in Cr2 as you modeled in Cr1.
2. Anything marked for construction submittal will not be accepted at design submittal phase. Generally LEED only wants to review stuff once, and construction submittals usually require information that is not available or frequently changes before construction.
msuitc,
As for space heaters/coolers, if they are plugged into an outlet I am pretty sure they are process (not regulated) loads although I wasn't able to find the specific code reference.
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Joanna
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Posted: Tue Aug 12th, 2008 01:26 pm |
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Hi, Xcentric, You rock!!!
I get it. The on-site rewable energy cost is not including in Baseline model, but can be including in Design model. Right?
Thank you very much.
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Joanna
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Posted: Sun Aug 24th, 2008 06:29 pm |
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Here are some smaple exam I can't figure out , the correct is Bold Underline, Can anyone help please? Thank you.
1. The CEO of a successful recording label is committed to reducinf the environmental impact of a studio project both by reducing the amount of energy use in the building, and by making sure that the energy use comes from more benign sources. The structure, which will be a major renovation of an old theater, use green noise barriers with low-VOC adhesives. Additional, it obtains 15% of its energy by cost from a roof-based photovoltaic system while improving the baseline energy performance by twice that. The CEO also opts to purchase green power for 35% of the building's energy use for four years after its construction.
Which points could this recording studio achieve for its energy innovations under these specifications? (choose 4)
a. (1) for EAp2, Minimum Energy Performanca
b. (1) for EAc2, On-Site Renowable Energy
c. (1) for EAc6, Green Power
d. (1) for IDc1, innovation in Design
e. (3) for EAc2, On-Site Renowable Energy
f. (3) for EAc6, Green Power
g. (6) for EAc1, Optimize Energy Performance
h. (8) for EAc1, Optimize Energy Performance
I don't know why "d" is correct.
2. For MRc1, Building Reuse, which of the following aspects of a building project should not be included in LEED calculations for submission? (choose 3)
a. Small additions to the existinf building
b. Remediated hazardous material
c. Interior floor covering
d. Reusable furniture pieces
e. Roof decking
f. Doors
I can't find in the reference guide that "a" is the correct answer.
3. A green-built fir station is being constructed out of a 1920's-era police station. The new building reuses 98% of the exterior structure of the old building and 40% of interior element/ It also intends to collect, store, and recycle glass, plastics, and metals. In addition, all wood purchased for the project will be FSC-certified, and the project team has made a large-scale effect to incorporate non-structural interior elements of the project, such as doors, that were unfit for use under the same circumstances, into decorative aspects such as trim. For which LEED points would the project be eligible? (choose 1)
a. MRc1.1, MRc3, MRc7
b. MRc1.1, MR1.2, MRc3, MRc7
c. MRc1.1, MR1.2, MRc1.3,MRc3, MRc7
d. MRc1.3,MRc3, MRc7
e. MRc1.1, MR1.2, MRc7
f. The project is not eligible for LEED certification
I don'y know why the answer is not "b"?
Two more questions
1. For MRc5 Regional Material- if the material is extracted from more than 500miles but final assemble within 500miles, does it qulify as reginal material?
2. Can project apply LEED Certification without a LEED AP in the team? Does include a LEED AP in the project as a Prerequisite or ID?
Thank you.
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bs79638
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Posted: Mon Aug 25th, 2008 02:05 pm |
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1) D is correct because the contract for green power is for 4 years. This is worth an ID point.
2) A should not be correct. F should be the answer instead. This would be part of MRc3 not MRc1.
3) F is correct because it is not recycling paper or corrugated cardboard as required by MRp1.
Additional questions:
1) No, it must be extracted, processed and manufactured within 500 miles.
2) re: IDc2, LEED AP is not required at all, but it is an easy point to earn if you are already a LEED AP.
Last edited on Mon Aug 25th, 2008 07:32 pm by bs79638
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msuitc
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Posted: Mon Aug 25th, 2008 07:22 pm |
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xcentric wrote: Joanna,
1. EAcr1 is referring to the calculations in Appendix G (of ASHRAE 90.1-2004). There are several methods described in this appendix on how to model the energy usage of your building as well as how to model a baseline building. Actually most of the instructions are about the baseline. "Full credit" here refers to how much of your renewable energy counts towards the 14%+ energy costs savings you are trying to achieve. Using one method, it doesn't count, using the other, it does. Depending on the how much your renewable energy source costs, this may or may not be an advantage.
The method of energy modeling doesn't affect whether you can count it towards Cr2, but I believe you have to use the same annual energy cost for your building in Cr2 as you modeled in Cr1.
2. Anything marked for construction submittal will not be accepted at design submittal phase. Generally LEED only wants to review stuff once, and construction submittals usually require information that is not available or frequently changes before construction.
msuitc,
As for space heaters/coolers, if they are plugged into an outlet I am pretty sure they are process (not regulated) loads although I wasn't able to find the specific code reference.
xcentric,
thanks for your post! i went thru the reference guide and it classified space heaters/coolers under the regulated (non process) category.
i thought it was process all this while. just wanted to update. please correct me if i am wrong. thanks again!!
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nhundal
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Posted: Mon Aug 25th, 2008 10:45 pm |
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1.Do you have any practice test to lpost online for practice?
2. Question.
How many credits you can be recieve under ID category?
Answer. 4 or 2. it shoud be 2 rather than 4.since its asking only credits not points.
But most practice tests has answe 4.
can anyone tell me what is correct.
Nav
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coda
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Posted: Mon Aug 25th, 2008 10:46 pm |
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bs79638 wrote: 2) A should not be correct. F should be the answer instead. This would be part of MRc3 not MRc1.
If a door is reused as a door, it's part of MRc1.3. If it's reused in a new way--as a tabletop, for example--then it's part of MRc3.
I still can't figure out why 'A' would be correct, though.
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Joanna
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Posted: Tue Aug 26th, 2008 02:47 am |
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bs79638
Thank you for the excellent answer. I have few items need your advice.
1) D is correct because the contract for green power is for 4 years. This is worth an ID point.
I thought the Green Power is MR6, that why it should be indicated as IDc6 instead of IDc1(45.5%new & 38.5%existing). Do I understand correctly?
2) A should not be correct. F should be the answer instead. This would be part of MRc3 not MRc1.
I read the reference guid several tims on this section but could not find the information regarding small additions. Would you please tell me which section or page I could find this requirement? Thank you.
Nhundal
Check this link where I got the sample exam
http://www.cce.ufl.edu/LEED/quizzes.asp
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bs79638
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Posted: Tue Aug 26th, 2008 01:45 pm |
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Joanna wrote: bs79638
Thank you for the excellent answer. I have few items need your advice.
1) D is correct because the contract for green power is for 4 years. This is worth an ID point.
I thought the Green Power is MR6, that why it should be indicated as IDc6 instead of IDc1(45.5%new & 38.5%existing). Do I understand correctly?
Green power requirements state "at least 35% ... with a least a two-year renewable energy contract". This gives you 1 point under EAc6. Refer to the Exemplary Performance section of this credit in the reference manual: By doubling the contract to four years, you can earn an Exemplary Performance point, which is filed under IDc1 (as all Exemplary Performance credits are).
2) A should not be correct. F should be the answer instead. This would be part of MRc3 not MRc1.
I read the reference guid several tims on this section but could not find the information regarding small additions. Would you please tell me which section or page I could find this requirement? Thank you.
This is my point: this is not in the reference manual, so this answer should not be correct. The only reference I can find is on page 249 which supports that 'A' should not be an answer: "Use existing interior non-structural elements (interior walls, doors, floorc overings and ceiling systems) in at least 50% (by area) of the completed building (including additions)."
Regarding answer 'F', I stand corrected by coda: 'F' would be included in MRc1.3 if the doors are in place. (If the doors were salvaged from another source, then they would fall under MRc3.) (Thanks coda)
Nhundal
Check this link where I got the sample exam
http://www.cce.ufl.edu/LEED/quizzes.asp
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Joanna
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Posted: Tue Aug 26th, 2008 01:59 pm |
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Thank you bs79638 , sorry I didn't ask clearly about the first question. My dought is that if the project meet
1. energy cost saving 45.5%(new) & 38.5%(existing), it earns IDc1,
2. if it also meet 35% Green power, does it supposed earn IDc6? (instead of IDc1). Maybe the question is simply like that - as long as earn ID pont, which sub-category doesn't matter
Green power requirements state "at least 35% ... with a least a two-year renewable energy contract". This gives you 1 point under EAc6. Refer to the Exemplary Performance section of this credit in the reference manual: By doubling the contract to four years, you can earn an Exemplary Performance point, which is filed under IDc1 (as all Exemplary Performance credits are).
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bs79638
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Posted: Tue Aug 26th, 2008 02:10 pm |
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Joanna wrote: Thank you bs79638 , sorry I didn't ask clearly about the first question. My dought is that if the project meet
1. energy cost saving 45.5%(new) & 38.5%(existing), it earns IDc1,
2. if it also meet 35% Green power, does it supposed earn IDc6? (instead of IDc1). Maybe the question is simply like that - as long as earn ID pont, which sub-category doesn't matter
I think I understand your confusion. Some of the credits have Exemplary Performance points available. Whichever credit these points are for, they will always be filed under IDc1. There are a maximum of 4 points available using IDc1 (IDc1.1, IDc1.2, IDc1.3 & IDc1.4). In this scenario, you would file like this:
IDc1.1: Exemplary Performance for EAc1
IDc1.2: Exemplary Performance for EAc6
Does this help?
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Joanna
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Posted: Tue Aug 26th, 2008 02:13 pm |
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Hi, bs79638,
I need to weakup!!! Yes, I understand. You are the best. Thank you.
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Joanna
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Posted: Tue Aug 26th, 2008 02:14 pm |
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oops, i really neef to wake up
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bs79638
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Posted: Tue Aug 26th, 2008 02:26 pm |
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Joanna wrote: You are the best.
Thats what she said! (Sorry, couldn't resist.)
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Joanna
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Posted: Mon Sep 1st, 2008 04:04 pm |
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I did some online sample exam and I felt the questions cover the entire reference guide, not only the intent, requirement, but also submittal, even some data. The questions are much more completed than I thought. Here are some answers I could not figure out. (The answer is in Bold). Your advice will be great appreciated.
1. EACredit 2, On-site Renewable Energy, suggests assesssing the project site to identify the potential to employ non-polluting renewable energy sources. One technology to consider is building integrated photovoltaic (BIPV) systems. What factors affect the calculation of energy generated by a BIPV array? (Choose three)
A. number of building stories
B. length of the west facade
C. shading effects
D. age of system
E averae daily output
Why B is incprrect? I think if building height / stories affect BIPV, do does length of the building.
2. A project team working on an 80,000 sq ft office building has decided to use photosensors in conjuncton with other switching and dimming devices. Use of this technology can be applied to which of the following credits? (choose two)
A. EA Credit 1, Optimize Energy Performance
B. SS Credit 8, Light Pollution Reduction
C. EQ Credit 6.1, Controllability of Systems: Lighting
D. ID Credit 1, Innovation in Design
I think B is correct answer also, becuase it requires " Non-emergancy lighting controls for turn off during non-business hours.
3. ANSI/ASHRAE/IESNA Standard 90.1-2004 allowa for additional lighting power above and beyond the maximum permitted general lighting levels for retail display lighting. The additional amounts allowed for specific displays and for displays of valuable merchandise, respectively, are
A. 1.0 W/ft2 and 5.4 W/ft2
B. 1.6 W/ft2 and 3.9 W/ft2
C. 1.6 W/ft2 and 5.4 W/ft2
D. 3.1 W/ft2 and 6.0 W/ft2
I have re-read SSCr8, EAP2, EAC1 and EAC2 wherever ASHRAE/IESNA occur, but could not find these data. Are they in the standard 90.1-2004? If so, does it mean that the LEED exam will include the standard. Oh, I hope not.
Also ASHRAE 129 is regarding air exchange, does anyone know that which credit use this standard?
Thank you for your time.
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xcentric
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Posted: Tue Sep 2nd, 2008 03:06 pm |
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1. A BIPV array would normally be put on the roof of a building, perhaps some on the south facade, but I haven't heard of it used on the west facade, so the size of the west facade won't matter. The number of stories affects the ratio of your roof area (hence available PV area) to gross floor area in the building. As your building gets taller, the roof is a smaller % of the floor area and PV has less impact on your total building energy usage.
2. Non-emergency lighting controlled during non-business hours would be done by a timer (generally turning lights OFF at night). A photosensor is designed to turn lights off during the day when there is enough sunlight (generally turning lights ON at night).
3. These are in ASHRAE 90.1-2004. The answer to your problem is in 9.6.3(c). This section as well as 9.2.2.3 [Interior lighting power exceptions] and tables 9.5.1 and 9.6.1 would be good to look over - no need to memorize, but to get a sense of what typical lighting power densities are for different space types. (You can "preview" 62.1 and 90.1 (for 2007) online for free here http://www.ashrae.org/technology/page/548 but you can't print. The reader is a little slow, so I suggest going straight for the TOC button at the bottom of the reader, then clicking on Chapter 9 for lighting.)
4. The only mention of ASHRAE 129 I found was in an old (2004) discussion on the bldg-sim listserv about EQ Cr 2. Looking at my current reference guide for that credit, I only see mention of ASHRAE 62.1-2004. I think perhaps the measurement standards of 129 were replaced by the prescriptive standards of 62.1.
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Joanna
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Posted: Tue Sep 2nd, 2008 03:11 pm |
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Xcentric,
Thank you very much for the perfect answers.
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Joanna
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Posted: Tue Sep 2nd, 2008 03:11 pm |
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Xcentric,
Thank you very much for the perfect answers.
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bs79638
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Posted: Tue Sep 2nd, 2008 03:13 pm |
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I concur with xcentric's analysis of the answers (not that it matters).
You should not need to know what is in the ASHRAE standards for the exam. Just know generally what they are and which credits or prereq's reference them.
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Joanna
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Posted: Tue Sep 2nd, 2008 03:16 pm |
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bs79638
that is what i prefer, otherwise i may give up.
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Joanna
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Posted: Tue Sep 9th, 2008 06:09 pm |
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Recently I did some sample exams and the result are very depressed. For example, I did the first pool (A) of greenexam and got the score of 74%, then I studied the mistakes I made in pool A and take the second pool (B) and got the score of 66%.
There is four scetions of the exam, is there any minimum % for each of them for passing the exam?
Here are some question that I failed and not sure why. Please advise, thank you. (correct answer is BOLD)
1. EA credit 5. Measurement & Verification, can assessit with LEED-EB for what reason?
A. IPMVP will lead to increased energy saving
B. ECM strategies qualify for LEED-EB credit
C. Provide for energy use accountability over time
D. M&V strategies will lower costs for LEED-EB
I have no idea which one is right, just think B is reasonable. But C is the right answer
2. For SS credit 1 Site Selection, waht should the project team do if the site selection involves special circumstance?
A. Provide confirmation that the project site does not meet any of the prohibited criteria
B. Donate dollars for toxic clean-up in your region equivalent to 5% project cost
C. Provide parkland in equivalent amounts to project site size.
D. Explain any site characteristics and non-standard tactics to reach intent
I choose A. It is shown in the reference guide, page 29 under Submittal Documentation
3. A project design will use pervious pavement to earn CC credit 6.2 Stormwater Design Quality Control. What information is required for the submittal?
A. list of BMP with description of function
B. Percent of annual rainfall volume treated
C. Water treatment engineer sign off all BMPs and the percent of water treated
D. List of treatment plans with drawings
E. List of structural controls with description of pollutants removal with the percent of rainwater treated.
F. Water treatment tests proving water filtration to 80% TSS.
I choose E & F, but A & B are correct. why?
Thank you very much.
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bs79638
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Posted: Tue Sep 9th, 2008 06:42 pm |
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1. C is correct. You need to verify energy savings over time in EB, so this will help.
2. Special circumstances would be if your site is prohibited as listed in one of the six criteria. You need to explain why your site still meets the intent (answer D). 'A' would work if your site is not special.
3. Not too sure on this one. I'll get back to you if nobody else chimes in.
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Joanna
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Posted: Thu Sep 11th, 2008 03:05 am |
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Bs79638
I read the reference guide carefully and here are some thoughts would like to share with you regarding question 3
Under aproach and implementation, it indicates that "Pavious pavement" is a non-structural measurement. Therefore answer E is incorrect.
Under Submittal Documentation, non-structural controls need
1. provide list of BMP,
2. including a description of the function of each BMP and the percent annual rainfall treated.
Therefore A & B are correct. And the reference guide does not mention anything about water treatment test so I guess answer F is out.
That is a tough one, it require me to memorize the book like back of my hand.
Thank you for the answers.
By the way, do you know is any minimun score % for each individual section? I heard is 74%.
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bs79638
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Posted: Thu Sep 11th, 2008 01:44 pm |
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