[Cob] Bay area cobbers - CRI needs your help - Cob Building Permits

[john fordice]

Hi Shawn & any interested Cobbers,
Update,
Looks now like the cobbing will start Friday or Saturday & run thru the weekend.
Hope you can make it.

john fordice  -  CRI
………………………….

> On Sep 30, 2018, at 11:08 PM, john fordice <otherfish at comcast.net> wrote:
> 
> Hi Shawn,
> Thanks for your message.  
> Will be mixing building starting Wednesday or Thursday  & anticipate finish by Friday or Satruday.  The samples will be small wall panels 2’ x 2’ x 13” thick and thumbed into open top plywood molds ( they need to be uniform thickness with smooth sides for the test (ASTM C1363).  Based on prior experience with the soil we are using, the mix will be 1:1 soil:sand.  This mix gave the max compressive strength in prior tests and this is what is preferred structurally.  Cob is a very poor insulator and I’m speculating that varying the sand content to improve the U / R values will have minimal effect. Plus, the tests are very expensive (appx $4000 per test) & we can only afford one.  Let me know if you can come on one of those days.
> Thanks for your interest.
> john fordice  -  CRI
>> On Sep 30, 2018, at 12:07 PM, Shawn King <sbkingster at gmail.com> wrote:
>> 
>> Hi John, hope to join you some day this week, I am in Sacramento.  Question:  are you planning to vary sand content in your samples to generate a range of values?  Seems to be the component most likely to vary depending on local-soil-based mixes and most likely to effect U value.  Just curious.
>> 
>> Best, Shawn King
>> 
>> On Sun, Sep 30, 2018 at 2:54 AM john fordice <otherfish at comcast.net <mailto:otherfish at comcast.net>> wrote:
>> To Tim & All other interested cobbers,
>> 
>> CRI is working on behalf of all cobbers.  We need volunteers - join in if you can !!!
>> 
>> Regarding mixing:
>> I prefer to make a wet mix of the soil, sand & water using a powered mixer.   Then I tarp the wet mix and stomp (actually my technique is more like wedging ceramic clay) in the fiber / straw.  True, the stomping dance can be a source of joy, but when time & quantity is an issue, a power mixer is faster and uses less personal energy ( a personal geriatric decision ).
>> Both methods work.
>> 
>> Regarding Cob Building Permits:
>> This Cob Thermal Test is to establish an accurate U value for cob.  U value can be numerically converted to the R value as R = 1/U.   Cob’s R value needs to be established to demonstrate energy compliance required for building permits once cob is accepted into the building codes.  This is important work towards the future of making cob building permits possible.
>> 
>> john - director 
>> cob research institute - www.cobcode.org <http://www.cobcode.org/> <http://www.cobcode.org/ <http://www.cobcode.org/>>
>> PLEASE DONATE TO HELP SUPPORT CRI’s WORK
>> 
>> 
>>> On Sep 28, 2018, at 4:53 PM, Tim Ahearn <humantim at yahoo.com <mailto:humantim at yahoo.com>> wrote:
>>> 
>>> Dance 💃 your Cobb.
>>> There is Joy in the dance! 🕺🏻 
>>> Love,
>>> Tim
>>> 
>>>> On Sep 28, 2018, at 6:01 AM, john fordice <otherfish at comcast.net <mailto:otherfish at comcast.net>> wrote:
>>>> 
>>>> Calling Bay Area Cobbers.
>>>> Cob research institute (CRI) in Berkeley is preparing cob samples for thermal testing.  We need help mixing the cob this coming week.  Also need the use of a portable cement mixer.  Are you interested?  Can you help?  Please spread the word !
>>>> CRI is a non-profit dedicated to making cob building code accessible.
>>>> Thanks,
>>>> john fordice - CRI
>>>> www.cobcode.org <http://www.cobcode.org/>
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>>> 
>> 
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