Building a Cob house - Soil testing (Bottle testing) and Cob walls- Vrutta

Live, Love & Farm documents all the activities that is done by VRUTTA farm. This 950 sqft home is the first cob house project being constructed in Kolar district of Karnataka.
This video focuses on doing soil testing, making of cob mix and walls.
We decided to go with cob compared to other techniques as cob is one of the easiest and most sustainable building techniques, it doesn't need skilled masons and we can use locally available materials.
A proper balance between clay, sand and straw mixture has to be achieved for the cob mix to work wonders! Too much sand crumbles the wall and too much clay causes cracks. One of the simplest test to identify clay-sand ratio is shown in the video. It is called Bottle test. We also did some sample test batches to identify perfect soil. Fibres helps to hold the cob together and provides tensile strength. We have used rice straw but any other types of fibre like ragi straw, coconut fibre etc can be used.
Once the mix is ready let it ferment for 2-3days. Then roll it into small balls and start cobbing it from the plinth. Note that while cobbing we should not construct more that 1-1.5 feet of wall else the walls starts to bulge and fall.
Happy Building :)
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#earthbuilding #sustainablearchitecture #earthhome #offgrid #greenarchitecture #tinyhouse #cobwalls #soil #straw #cobmix #soiltesting #bottletesting #vruttafarms #livelove&farm #vrutta #gida #gidalivingcolours

[@prathvirajjadhav1566]

Beautiful Didi.....keep up the good work and best of luck for the Bright your future___♥️

[@manjulabv5351]

Awesome videos, keep up the good work

[@naturalfarmingshashidara721]

Hats up girl, 👏👏👏.

[@funlearningwithashrita740]

Beautiful..

[@indieacrespermaculture4746]

Keep up the good work!! Can you suggest books that can be used to upskill natural building?

[@ShankarDada010]

How much did it cost ?

[@ragnargranit]

Namaste!
I start building cob wall around my house, that I bought.
After I raised couple of metres, one of the local people said that all sand, clay in this area contents salts, and this will destroy my fence after 3-4 years.
Do you have any idea about it? If I'll add lime and gypsum to cob?

[@ushaswarnasunkari9270]

Nice video sister.. after filling the foundation with stones and soil did you use cement ? Can we use directly cob on that foundation .. I want to construct a cob house ... Pls tell me 🙏

[@makeshkumar8887]

no cement need for cob house. stornger than cement. just protecet wall from sun and rain.

[@sarathkrishna5109]

How long does a cob house last? Does it withstand heavy monsoon? Want to make one like this in hometown

[@makeshkumar8887]

if the wall not get direct rain water it will last more than 1000 years

[@deshpandeamit19]

1.08 , how did you came to conclusion that its 19%clay and 76% sand ?

[@livelovefarm9724]

Once the soil settles, measure the clay and over all soil settlement in cm and calculate percentages.

[@chethanmp8407]

can i know your email, wanted to construct a cob house like this. So wanted to know information regarding this. Thanks in advance.

[@livelovefarm9724]

[e-mail]

[@chethanmp8407]

@@livelovefarm9724 Thanks. 👍

[@krnaveen007]

Naavu ondhu katbeku bengalorinali ... sahaya madtira

[@livelovefarm9724]

[e-mail] ge details email madi.