[Greenbuilding] Thermal envelope

[Gary]

Hi,

Description of the Mooney Wall:
http://www.builditsolar.com/Projects/Conservation/MooneyWall/MooneyWall.htm

The Riversong version of the Larsen Truss:
http://www.builditsolar.com/Projects/SolarHomes/LarsenTruss/LarsenTruss.htm

The "Gimmie shelter" wall with 2 inch horizontal strapping:
http://www.builditsolar.com/Projects/SolarHomes/Stick/GSNotes01.htm

These descriptions were extracted some time back form the Fine 
Homebuilding forum or my MREA workshop notes with the permission of the 
authors -- its easier to read these then trying to dig through all the 
posts on the forum.

A few more potential ideas here:
http://www.builditsolar.com/Projects/SolarHomes/constructionps.htm

Gary
> Date: Wed, 23 Apr 2008 14:24:25 -0500
> From: "Russell, Richard" <Richard.Russell at shawgrp.com>
> Subject: Re: [Greenbuilding] Thermal envelope
> To: <Greenbuilding at listserv.repp.org>
> Message-ID:
> 	<C4B24FCFE00EBE4DB6A6821722BFD21441231F at entbtrxmb03.shawgrp.com>
> Content-Type: text/plain;	charset="us-ascii"
>
> The wall with the horizontal 2x on the inside has been dubbed the
> "Mooney Wall." It has been discussed at length, with many pictures, on
> the Fine Homebuilding forum "Breaktime." It can be a good retrofit for
> an existing wall. While the thermal bridging through the wood isn't
> eliminated, it is reduced substantially. As I recall, the horizontal 2x
> material used in the project described was at least in part scrap from
> other parts of the project, thus reducing waste and therefore being
> rather green.
>
> The exterior curtain wall design is called the Larsen Truss, named for a
> Canadian who worked it up a few decades ago for retrofit of existing
> housing to superinsulated level. A modified Larsen truss, as implemented
> by Robert Riversong (Vermont), also is discussed at length over on
> Breaktime. His implementation provides a 12" exterior cavity (R40) for
> dense-packed cellulose. 
>
> Dick Russell
>
>