Thursday, June 25, 2009






June '09  Installing electrical service in rammed earth walls:A quick post here to clarify how we get electrical service into the walls.  We use metal boxes (singles, doubles, and octagonals), fitted with terminal adapters as required.  The hard part is keeping the boxes where you want them against the forces of compaction working to drive them out of plumb.  You can see in the photos that the trick is a small wooden block, cut to fit inside the box, and screwed to the formwork.  Make sure the blocks are slightly back-beveled so they will come out of the box.  With the block in place, use tie wire to pull the box tight against the formwork.  Run conduit to connect outlets to switches to lights as required.  To keep the run lengths under control, we try to install eight inch or six inch junction boxes in a few key locations. Later in the project we'll illustrate how to install boxes for sconces and other lighting effects.

31 comments:

  1. Hi Terra,

    I've been following your blog with interest and a thought has occurred to me regarding the electrical boxes being fitted. How do you ram the earth underneath the box to ensure a nice finish under the electrical outlet once the formwork comes off?

    Mike

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