It’s been well over a month since my last post and I’m sure there are people wondering what is going on with us. Fortunately, I have some Earthship related news this time.
Last Saturday (July 15th) we trucked down to Mallorytown (near Brockville, ON) and helped out at the Martin Earthship. It’s a full three hour drive for us to get there, so we were up early and out on the road to make it there for 10am.
We had been down there last year, helping to pound tires. This time, we were doing pack-out. For those not familiar with pack-out, this is what we call the procedure by which we fill in the spaces between the tires after they have been pounded with dirt. I talked about this extensively during our trip down to Salida, Colorado, so I won’t go into too much detail.
We had a really decent day for this, as it was partially cloudy, but no rain. Jay and Erin (the owners) also have these portable tent-like shades that we moved around the site to keep the sun off us as we worked.
Here is the first picture of us all looking very busy.
They only have three full courses of tires completed, with a fourth partially done, so it didn’t take us long to move down the length of the wall.
Here you can see the basic idea of what we’re doing. The idea is you throw in a blob of concrete (after wetting the surface of the tires first – very important or your concrete won’t stick) and then put an aluminum can in the space.
Cover the first can with more concrete and then put two more cans in. Add more concrete and by the time you have that all covered, you should be coming out pretty close the the outer edge of the tires. The purpose of the cans is to save on concrete, so they’re really just spacers in this case.
Here you can see Kat hard at work testing out the hammock.
By the end of the day, we had done the pack-out from one end of the house to the other. Here you can see me. It kinda looks like I’m looking for an offering with my hands out like that, but really I’m carting a handful of concrete over to the wall.
Overall, it was a great day, we accomplished things, met some new people, shared our ideas and generally had a great time. Jay and Erin are always great hosts.
Something to note on Earthship pack-out: if you wait until you have the roof on before you start doing pack-out, you can use adobe or cob instead of concrete. This may or may not be cheaper, depending on how easily you can get your hands on clay. You don’t want to do adobe/cob before the roof goes on though, otherwise, if it rains, it’s all going to fall out. Related to that, any tire wall that is exposed to the outside (like wing walls, for example) must have concrete for pack-out for that same reason.
If you’re wondering where we are at with our own Earthship, we still require an engineering stamp for our plans. We have found a local engineer who is himself building an Earthship so that is a big bonus. Unfortunately, he isn’t fully certified yet as he will be sitting his last exam in August, so we’re in a bit of a holding pattern at the moment.