[Cob] cob paving?

[Lance Collins]

Hi Steve,

I would consider putting weedmat between two layers else the clay will 
migrate down into the gravel and you will lose the drainage over time.

Several years ago I placed 4 inches of half inch river pebbles, a sheet of 
weedmat and an inch of pebbles beside my shed.  Over time soil has washed 
into the top layer of pebbles and made a hard layer similar to the surface 
your are proposing.   No significant amount of soil has penetrated the 
weedmat and the underlying drain is still working OK.

Lance



>I've been so fortunate to receive the coblist these past several months
>and I finally have a contribution(?).  Up until this year the Oregon
>Coast Aquarium had an earthen, broad walkway leading to their front
>door.  It is bordered by 12" sq pavers on each side and as much as about
>24' wide an the hard packed surface was thinly covered with finely
>crushed rock.  I was so very proud of them for using such an earth
>friendly medium for this very prominent "boulevard".  When I returned
>with my family for a visit this May I was disgusted to find that
>BLACKTOP had replaced that lovely "green" work of art.  OK, now to my
>idea... I am today going to make (start) a pathway of earthfriendly
>materials to connect my home and my parents home (30ft long and three
>feet (average ) in width).  1-2" of gravel to grade and provide drainage
>from a micro climate that is fairly moist  and a cob type pavement mix.
>My plan is to mix clay and 1/4 " crushed rock 1:3 and apply 2" over the
>graded and packed gravel.  I will have a border of used brick which is
>to end up about 1/2" higher at it's surface than the "pavement".  Any
>loose gravel left from the paving process or applied later will be
>retained on the path.
>      Does this sound doable?  I may adjust the mix as I'm mixing the
>cob.  I'm not worried about testing the mix as it shouldn't meet with
>any real stress.  Just foot traffic.  Does anyone have experience in
>this?
>     Also,  I am looking into stackwood to possibly add variety to at
>least one wall and have been gleaning any information to become more
>comfortable with the idea.  Has anyone knowledge of a list similar to
>coblist for stackwood enthusiasts??  Coblist has been both entertaining
>and educational.  Thank you all!
>Steve
>
>
>Grace and Peace,
>
>STEVE
>
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