[Greenbuilding] Embodied Energy of a sheet of paper

[Ward Edwards]

Sorry, but concrete IS a thermal bridge.  It only has an R value of 
something like .09/in so a typical 8" wall will have an R value of 0.72. 
  The plastic ties would have a bit better insulating value, but the 
surface area is so small as to have no affect.  The only thing concrete 
give you is thermal mass, and when you have it behind the insulation of 
an ICF, you loose a lot of that effectiveness.

Ward
ward at buildgreen.ca

Donald Eyermann wrote:
> I wonder how ICF's fair against conventional materials for water dependent
> construction parameters? I know that EPS foam uses steam to expand the
> beads....and there certainly is water in the concrete fill. Isomax uses a
> precast concrete motar "tie" between the foam sheets as opposed to plastic
> or metal. The idea here is that when the wall is done, having a maximised
> amount of concrete with no thermal bridges passing through the center "core"
> will provide maximised performance as an isolated thermal mass. Thus
> achieving longer hysteresis timespan and reducing thermal loss.
> 
> Actually I have never made much of anything while drunk. Kind of a counter
> purpose there.  
> 
> -----Original Message-----
> From: greenbuilding-bounces at listserv.repp.org
> [mailto:greenbuilding-bounces at listserv.repp.org] On Behalf Of Jane
> Talkington
> Sent: Friday, April 04, 2008 4:45 PM
> To: greenbuilding at listserv.repp.org
> Subject: Re: [Greenbuilding] Embodied Energy of a sheet of paper
> 
> 
> 
>>From a class lecture:
> 
> Next time you make paper airplanes while drunk, consider these factoids:
> It takes 170 litres to make a pint of beer; 10 litres to make a sheet of A4
> paper.
> Sip carefully and fold deliberately.
> 
> The building industry is unknowingly very dependent on water to produce
> building materials.
> Full (and more serious) story:
> http://www.building.co.uk/sustain_story.asp?storycode=3104825&origin=bldgsus
> tainnewsletter
> 
> Jane Talkington
> PhD student in "Sustainability"
> Oklahoma State University, Environmental Science Program Stillwater, OK
> GreenQueen at hotmail.com (405) 714-1919 
> 
> ----------------------------------------
>> To: greenbuilding at listserv.repp.org
>> From: rmc at nyserda.org
>> Date: Fri, 4 Apr 2008 13:23:04 -0400
>> Subject: [Greenbuilding] Embodied Energy of a sheet of paper
>>
>> My organization is trying to be more sustainable in its business 
>> practices.  One thing we are debating is defaulting all computer 
>> printers to print double sided instead of single sided.  We have the 
>> energy monitoring equipment to measure the energy consumption 
>> differences between double sided and single side printing.  However, 
>> we are trying to find a citable source for the embodied energy savings for
> using less paper.
>> Does have such a citable value?  Any suggestions for where to look for 
>> such a value?
>>
>> Many thanks,
>>
>> Robert M. Carver, P.E. ( - Bob - )
>> Senior Project Manager
>> New York State Energy Research and Development Authority
>> 17 Columbia Circle
>> Albany, NY 12203
>> tel: 518-862-1090 ext. 3242
>> fax: 518-862-1091
>> rmc at nyserda.org
>> www.nyserda.org
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