[Greenbuilding] Growing Media Embodied Energy

[Gennaro Brooks-Church - Eco Brooklyn]

That's very helpful. Thanks John. I agree with your list of priorities. I
would add quality of life, for all biota, especially in the city.
I'm really struggling to find a lower embodied energy light aggregate here
in NYC.
It's turning out to be as easy as my other quest- to find a greener option
to sheet rock.

On Friday, October 11, 2013, John Salmen wrote:

> The ESCSI (lightweight aggregate institute put out numbers in 2012). For
> manufactured materials like expanded shale or other lightweight aggregates
> the number is same for all - 2.16MBtu/ton or 1.34 mbtu/cubic yard. Carbon
> dioxide is 350.5 lbs/ton 218lbs/cy.****
>
> ** **
>
> Sand is about 20,000 Btu per ton and Crushed stone about 30,000 Btu/ton. *
> ***
>
> ** **
>
> Those numbers don’t get it to your building site though.****
>
> ** **
>
> I’m doing another green roof now (extensive type) and I’ve switched from
> varied sedum type mix to just a moss roof (they typically turn into a moss
> roof anyway and its a more desirable material in my mind). Soil mix is
> simpler and can be limited to local sandy soils or cement sands (different
> particle sizes) with some aggregate – limited organics. Less saturated
> weight. ****
>
> ** **
>
> For me the main points of a green roof are ****
>
> **-          **To substitute a natural bulk material (soils primarily)
> for a manufactured sacrificial material (roofing that can withstand the
> elements****
>
> **-          **To reduce concentrated peak water flows (preventing
> erosion, etc.)****
>
> **-          **To potentially improve the quality of the water by
> isolating it from typical roof contaminants that it would normally degrade
> and carry away****
>
> Plants are secondary but they can improve water quality (and air) and moss
> can be extremely effective for that with a higher probability of not dying.
> ****
>
> ** **
>
> Water retention (and ultimate weight) is calculated by soil mix and
> holding capacity. Weight is a huge issue as it puts tremendous loads on a
> building that have to be provided for (can really upsize a building
> especially in a seismic area). ****
>
> ** **
>
> ** **
>
> ** **
>
> *From:* Greenbuilding [mailto:
> greenbuilding-bounces at lists.bioenergylists.org <javascript:_e({}, 'cvml',
> 'greenbuilding-bounces at lists.bioenergylists.org');>] *On Behalf Of *Gennaro
> Brooks-Church - Eco Brooklyn
> *Sent:* October-11-13 10:30 AM
> *To:* listserv Green Building new
> *Subject:* [Greenbuilding] Growing Media Embodied Energy****
>
> ** **
>
> Hi,****
>
> Does anyone know where I could get a list of the different growing media
> aggregate embodied energy? Perlite, expanded shale, etc? Trying to see what
> green roof composition is least embodied energy compared to weight.****
>
>
> ****
>
> Gennaro Brooks-Church
> Director, Eco Brooklyn Inc.
> Cell: 1 347 244 3016 USA
> www.EcoBrooklyn.com
> 22 2nd St; Brooklyn, NY 11231****
>


-- 
Gennaro Brooks-Church, Director
Eco Brooklyn
347-244-3016
22 2nd St, BK NY 11231
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