[GSBN] Wall Detail

Sun May 20 17:01:43 UTC 2018

Thanks everyone for the feedback and interesting discussion !  David I caught your presentation at the Colorado Natural Building Conference .. good stuff !  In a similar vein I'm wondering if anyone out there has done a standard (but not popular) 19 3/16" 2x6 stud frame house and tried to stuff 18" bales on end between the studs?  The stud spacing allows for 8' sheet goods on the outside and leaves 17 11/16" (sorry to the rest of world about these silly fractions) space between the studs .. seems it would snugly fit a 18" bale.

Anyone ?  FYI the climate here does not necessarily warrant the additional blown cellulose.  We already (usually) net zero our "standard" 1000 sq/ft bale homes with 3kw of PV and a Fujitsu mini-split.

Doug Nichols

Creating Energy Efficient Homes Since 1995

Nichols Contracting LLC
821 S. 400 E.
Moab, Utah 84532
Cell #970.683.1517
Lic. #9508518-5501

Principal / Qualifying Builder
Community Rebuilds Moab -- http://www.communityrebuilds.org/

________________________________
From: Gsbn <gsbn-bounces at sustainablesources.com> on behalf of David Arkin, AIA <david at arkintilt.com>
Sent: Monday, May 14, 2018 10:42 AM
To: Global Straw Building Network
Subject: Re: [GSBN] Wall Detail

Hello Doug:

We completed a recent project using a ‘Hybrid Wall System’, employing typical 2x6 studs at 24” on center with plywood sheathing (note - plywood, not OSB - but in a non-seismic zone wood fiberboard or similar may suffice), and then installed the bales as insulation on-end between the studs, using clay plaster on the interior and a typical weather-barrier and cladding finish on the exterior.  Attached is an illustration of the system, and here are links to the workshop and the finished building, a 34,000 mixed use office and warehouse in Eugene, Oregon.

http://www.arkintilt.com/ata-helps-host-casba-hybrid-straw-bale-workshop-our-mahonia-building-eugene-oregon

http://www.arkintilt.com/salvaged-materials-mahonia

Also attached is a picture of the wall under construction.  We used 3-string rye bales and held them tight to the plywood with 4” wide strips of 1/2” plywood, and 12” Timber-Hex screws into the studs (we'll use 14” screws next time - easier to find the studs, and a better connection).

I also have the WUFI analysis our building efficiency consultant ran for various locations - they can run a weather file specific to Wilmington if you wish. LMK.

This is not quite a ‘StrawCell’ as it doesn’t feature cellulose, but it could be appropriate to Delaware.

Looks like a great project,

David / ATA & CASBA

[cid:4ECF3812-6846-4A9D-B026-DB8BC49BD0CA]
[cid:4E79B59A-A315-4B25-9395-E54CB94F7E1D]
On May 14, 2018, at 8:47 AM, Chris Magwood <chris at endeavourcentre.org<mailto:chris at endeavourcentre.org>> wrote:

Hi Doug,

Here's a detail from our last straw-cell project. Hope it's helpful to you. You can contact me off list if you want to discuss it.

Cheers,

Chris

On 2018-05-14 11:03 AM, douglas nichols wrote:
Hello All

I'm consulting with a non-profit (http://www.yinnovations.org/) to  build an affordable straw home for a low income family.  Their current engineering was provided by someone unfamiliar with straw bale building and is coming up pretty short of being a low carbon, sustainable, or natural design.  So we are moving to a straw cell design to help ease any engineering and building official concerns about the straw bale part.  My question is-- does anyone have a good straw cell wall detail drawing they can point me to or donate to the effort?

Y Innovations, Inc.<http://www.yinnovations.org/>
www.yinnovations.org<http://www.yinnovations.org/>
2903 North Jefferson Street 2903 North Jefferson Street is a 4500 square foot vacant lot in the city of Wilmington, where Y Innovations will be completing a 630 square foot naturally-built straw bale home in 2018.

Thanks

Doug Nichols

Creating Energy Efficient Homes Since 1995

Nichols Contracting LLC
821 S. 400 E.
Moab, Utah 84532
Cell #970.683.1517
Lic. #9508518-5501

Principal / Qualifying Builder
Community Rebuilds Moab -- http://www.communityrebuilds.org/

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Chris Magwood
Director, Endeavour Centre
www.endeavourcentre.org<http://www.endeavourcentre.org/>

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Arkin Tilt Architects
Ecological Planning & Design
1101 8th St. #180, Berkeley, CA  94710
510/528-9830 ext. 2#
www.arkintilt.com<http://www.arkintilt.com>

David Arkin, AIA, Architect
LEED Accredited Professional
CA #C22459/NV #5030

Director, California Straw Building Association
www.strawbuilding.org<http://www.strawbuilding.org>
CASBA is a project of the Tides Center

"There is no way to peace. Peace is the way."
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