Comments on: Materials and Resources 4.2 – Recycled Content – 20% Total Construction Material from Recycled Items (post consumer + 1/2 pre-consumer)

By: Stillfan

Stillfan — Fri, 15 Jul 2011 16:11:30 +0000

Maybe this is addressed somewhere else, but what if you have all post consumer and no pre-consumer. As long as the post consumer value is greater than 10-20% based on cost, will this product still be counted towards this credit?

By: Mary

Mary — Sat, 26 Sep 2009 22:55:48 +0000

although the question is posted in back in march … c MRc4.1 needs standard performance calculation for the Supplementary Cementing Materials.

By: Eric

Eric — Wed, 27 May 2009 06:03:11 +0000

Dear Pat:

I don’t quite understand your Pre-consumer definition:

# Pre-Consumer: material form the manufacturer that has not been used and will NOT be reused

* examples: wheat straw, sawdust, fly ash

since these materials ARE and should be reclaimed within the same process that generated them…? Does this not mean they will be reused and therefore included in the 1/2 pre-consumer calculation???

Could you please clarify for me?
Thanks,

By: SteveM

SteveM — Fri, 15 May 2009 03:19:59 +0000

mamz, I suspect the answer key for the question is in error. Performance calculation has nothing to do with the requirements specified in MRc4.1 & MRc4.2. Where did the question come from?

By: mamz

mamz — Sun, 22 Mar 2009 23:14:03 +0000

Sample ques:
Which THREE of the following credits require standard performance calculations?
A.EA Credit 1, Optimize Energy Performance
B.WE Credits 3.1 & 3.2, Water Use Reduction
C.MR Credits 4.1 & 4.2, Recycled Content
D.MR Credit 6, Rapidly Renewable Materials

Answer is ABC,
I understand A & B are clear answers but why C?
Thanks in advance.

By: Baloch

Baloch — Sat, 14 Mar 2009 21:54:31 +0000

Thank you Lisa.

By: Lisa

Lisa — Sat, 14 Mar 2009 21:44:23 +0000

The piping and ductwork would be considered part of MEP material, which cannot be counted. The only credit in MR that those count for is MRc2.

By: Baloch

Baloch — Sat, 14 Mar 2009 21:14:49 +0000

You are working on a LEED submittal, and considering materials for compliance
with MR Credit 4, Recycled Content, including copper piping with 95% postconsumer
recycled content, ductwork with 25% pre-consumer recycled content, and metal aluminum flashing with 5% pre-consumer recycled content. Which materials
are eligible to contribute to the credit? (Choose one)
A) ___ All of them
B) ___ None of them
C) ___ Only the ductwork and piping
D) ___ Only the flashing
E) ___ Only the piping

Should not the answer be A? I mean cant we add the cost of each separetley to find their contribution towards total project cost? The answer is “D”

By: perellush

perellush — Tue, 02 Dec 2008 19:27:30 +0000

Thank you, Pat.

By: Pat

Pat — Tue, 02 Dec 2008 18:09:52 +0000

Hi Perellush,

Good question. Although it’s not really something you need to know for the exam, the recycled content of a material can usually always be found from the manufacturer, or even on the product itself at times.

I’m sure there are resources out there too that hae general percentages, but to get an exact one from an exact manufacturer, you’ll have to get the information from the manufacturer themselves.

By: perellush

perellush — Tue, 02 Dec 2008 16:34:39 +0000

I am a little unclear on how to find the recycled content information. Is it something that we have to request from manufacturer (or they list on the specs for a product)? Or is there a good resource on finding out what materials have what % and type of recycled content?
Thank you in advance for your help.
Ella

By: Matt

Matt — Mon, 19 May 2008 15:39:27 +0000

Sit,

I didn’t really understand your question, but I think you are asking if you have a 30% post-consumer + 15 pre-consumer content, is that the same as having a total of 30% total, per LEED requirements. If that is your question, then no. The formula is (post + 1/2 pre) for LEED. With the numbers you gave, the correct percentage should be 37.5% total.

By: sit

sit — Sun, 18 May 2008 00:54:39 +0000

there has question,

Is 30% recyle item as same as (30%postconsumer + 15% preconsumer)?

By: Pat

Pat — Fri, 09 May 2008 05:29:59 +0000

Matt,

Honestly, your question is a good question, and it’s too good for me. I don’t believe I have the experience or qualifications to give you information that could possibly be misleading for you and your design team. I will however ask that you please visit Joel’s website at

http://reallifeleed.blogspot.com/

He’s a great help and he works on many LEED projects himself and his goal is to give everyone useful information in passing real LEED projects. If you look in the reference guide, however, I know it says something about steel specifically, but unfortunately I don’t have a guide right in front of me at the moment.

I apologize I can’t be of further assistance to you. If you get an answer, please let us all know!!! Thanks and good luck!

By: Matt

Matt — Wed, 07 May 2008 04:35:20 +0000

I was recently hired at a steel fabrication company, and recently a few of our general contractors have requested we partake in the LEEDS certification program. I have sort of been put in charge of handling it, but I am quite new to all of this. Say for instance that one of the companies that supplies us steel, has 100% recycled content in their steel, 50% is post-consumer, and 50% is pre-consumer, the number that would be put down in the LEEDS form would be 75% correct?

For material costs… what would this include for steel? We have the actual steel we buy, erection of the steel, the painting/galvanizing, the manufacturing, & markups to the customer. What aspects of that would be included in the cost? Would it be what we sold it to them for… minus erection, painting/galvanizing, and manufacturing?

The steel mills we buy from give us their post & pre consumer recycled content… but they usually say something like 70-85%, should I just take the low number, or the in-between of the two? Also there are companies that are in locations such as China, that some of our pipe suppliers buy from, and they do not supply numbers for us to use, what do we do there?

Thanks ahead of time!

By: Pat

Pat — Thu, 27 Mar 2008 18:35:27 +0000

Awesome! April is coming quickly, but it sounds like you are on schedule to do well with the test. Good luck and keep us posted.
=)

By: Lilian

Lilian — Thu, 27 Mar 2008 17:51:52 +0000

I plan to take in April…I’ve a study group started since Feb and we are into intro, application, cirs, etc. Slow but steady and this blog given to me 2 days ago from a study peer, is filling me alot more confidence. I feel alot ‘safer’ to post questions here and the best of it is getting spontaneous answer without judgement…..i think we are the only study group here studying the newer version ( eq to us current version with slight variations) …

By: Pat

Pat — Thu, 27 Mar 2008 17:46:22 +0000

Glad to hear =) Tell your friends =P

Please ask more questions if you have any! I, or others are always willing to help. When are you planning on taking your exam?

By: Lilian

Lilian — Thu, 27 Mar 2008 17:36:01 +0000

Thanks Pat for correcting 1/2 pre-consumer and the explanation. There’s something about this blog that I’m finding alot easier to understanding what I have been studying…:-) thanks again.

By: Pat

Pat — Thu, 27 Mar 2008 15:50:00 +0000

Lilian,

The correct equation is post consumer + 1/2 preconsumer. I’m assuming you know what each of those means, but the equation pretty much means that any pre-consumer recycled material will only be counted half the actual amount toward this credit. Post consumer recycled material will count in full.

By: Lilian

Lilian — Thu, 27 Mar 2008 02:18:56 +0000

canadian version 1.0
4.1 – 7.5%
4.2 – 15 %

does this mean extra credit would be 30% ?

can someone explains post-consumer + 1/2 post-consumer ?

thanks.