Saturday, 12 September 2015

Rammed Earth Wall A

Welcome to the latest update on building the Cabin in the woods.  We formed and rammed "Wall A" since our last post.  Wall A is about 24 feet long with two windows, one internal roof drain, and an electrical box.  Wall A is 181 square feet and weighs in at more than 15,000kg.
The outside of the form work was constructed first using the strong-backs (vertical) and wailers (horizontal).
The form-ply was then spliced and secured to the wailers (the horizontal 2x10's shown here).
A full ten feet of form-ply was secured to the outside wall.
The outside form work shown from the back side or outside of the building. 
If you look closely into the form work, you can see the 4" ployiso insulation boards, the foamglas blocks and the electrical box and conduit.  Also shown are the vertical 15mm rebars required for seismic reinforcing.
The form work was waterproofed with a tarp. 
This is how the site looked the day we began ramming Wall A (Tuesday September 8th, 2015).  The tow behind air compressor powered all three pole tampers in the forms.
Shown here is the second layer of form-ply.  To allow access into the forms, we build the inside form work just ahead of the rammed wall.
Here is the 8 foot layer of polyiso foam being installed against a window bulkhead.
The skid steer mixer performed well.  Each mix was about 1400 pounds of material. Extra water was needed in the mixes because the earth used in the mix was literally sucking the moisture out of the mix.  I would mix it really wet (by rammed earth standards) and by the time it was delivered and shovelled into the forms it would be approaching too dry.  

The top of the wall.  The internal roof drain and 5/8" ready rod galvanised anchors are also shown in this photo.
Thanks for checking out this update on the Cabin in the Woods and please check back next week as we unveil Wall A and begin to build Wall B.

Please feel free to share on your social media and do not hesitate to contact me via email or to leave comments.  I will get back to you ASAP.

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