[Greenbuilding] [BULK] Perimeter insulation (again)

[Clarke Olsen]

    A thermal break is also a structural separation. One of the forces 
acting
    to crack slabs is the inability of the curing concrete to contract 
away
    from the foundation, even if that bonding is unintended.
    Clarke Olsen

On Apr 18, 2007, at 10:46 AM, Lawrence Lile wrote:
> This could allow for a thermal break between the slab and the 
> foundation wall givin the right details.  Might be a good thing to 
> consider.  I imagine most of the residential contractors around here 
> would balk, but the balked at most everything I want to do. 
>  --Lawrence
>
> From: Clarke Olsen [mailto:colsen at taconic.net]
> Sent: Wed 4/18/2007 3:01 AM
> To: Lawrence Lile
> Cc: Greenbuilding at listserv.repp.org; candtcampbell at juno.com
> Subject: Re: [Greenbuilding] [BULK] Perimeter insulation (again)
>

>  Good practice, structural as well as thermal, is not to bring the
> slab out
>     under the wall. Keeping the slab inside and bringing the wall down
> to bear
>     on the foundation reduces slab cracking, improves thermal envelope.
>     Clarke Olsen
>
> On Apr 18, 2007, at 9:30 AM, Lawrence Lile wrote:
> >
> >> about 1/3 of
> > total heat loss occurs through the slab edge. It made me begin to 
> think
> > of the slab edge as a long, thin window.
> >  The bare concrete is designed to allow inspection.
> > 
>