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Jeremy Hillman

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since Jun 20, 2017
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Recent posts by Jeremy Hillman

I mostly find commercial apples grafted onto rootstock with names like ELMA 7, ELMA 111, and Budagovski 9. Are you saying these are crabapples roots?
2 years ago
I plan on planting some of my first fruit trees this year. I'm a little nervous since this is my first planting. There is a creek that does overflow during the especially wet seasons, and I know a lot of fruit trees won't like that.

I'm thinking of planting Oregon Crabapple trees (page 15) from seed which are native to the area and like to be planted above the low water mark and below the high water mark of the riparian zone. My goal, once established, is to then graft my desired apple cultivar onto the crabapple.

Does this seem reasonable? Or should I use a well established apple rootstock that tolerates wet feet?
2 years ago
I'm trying to have a foot bridge built over a creek and will need a bridge with about a 30-40' span. Unfortunatly, the whole area is in a flood zone. What precautions should I take?

I'm planning on building a rainbow bridge since it just needs two supports and nothing in the middle. I also like the idea of how much higher it gets in the middle which I'm hoping will give it clearance during flood seasons if things are floating down the creek. The idea is to build really nice foundations on both ends and use rot resistant wood. The bridge might need to be replaced each year, but it would just need a cheap drop in bridge.

Thoughts?
2 years ago
Is there a way to lookup medicines and see how they're motabilized and if there are any concerns with the motabalities?
2 years ago
My guess would be the urine being a nitrogen source and the leaves being a nitrogen source. The carbon/nitrogen ratio is way off, if composting, and would lead to some strong foul smells.
2 years ago
Maybe rammed earth walls might be a more environmentally sound and cheaper option compared to cement. This video describes it like a limestone.
2 years ago
I mentioned earlier how cement could be covered, but the more I'm reading into it, the more I like how you can color the cement darker, and how you can use wooden forms to give it rich, organic textures. Granted, the texture in the picture below would be hard to dust.
2 years ago
Thank you for the feedback. I understand the Earthship was all about repurposing and this deviates from that at a benefit of making the rest of the structure possibly more attainable to more people by using more conventional material.

With tires, my understanding is decades ago there was no reuse for them and they were filling landfills, but now tires are being repurposed and finding tires can even be an issue in some areas.

With Earth filled tire walls, they were about 36" in thickness. Any idea how thick a cement wall would need to match the mass of a tire wall? 1:1?

As far as the rocket heater for a radient flooring, I was thinking more of wrapping the liquid filled tubes around the exhaust of the heater.
2 years ago
I know it goes against a core design element, but what do you guys think about cement walls instead of pounded tires?

Three of the major issues I've seen with Earthships are tire off gassing, the amount of energy needed to pound the tires, and issues with trying to get the plans certified in certain cities.

I was thinking a poured cement slab foundation, and either CMU walls filled with cement (CMUs come standard up to 12" thickness), or strictly a poured cement wall without CMUs (and without insulated cement frames). The cement could even be covered with stucco, adobe, or cob.

How efficient at storing thermal mass is a cement wall vs a rammed tire wall? How much of a labor vs money trade off is this, is this prohibitively expensive? Would this be easier to get government approval?

On an aside, I was thinking of a cement slab with tubes connected to a rocket mass heater to create a radient floor heater. Thoughts?
2 years ago
Can anyone provide general dimensions for Earthship planning? I know Earthships can get wild, but I'm interested in more conventional layouts.

I'm especially interested in:

- Thickness of walls that separate rooms. How thick are the walls once the tires and coverings are in place? I've seen designs with thick tire walls between rooms and skinny walls between rooms, when is one recommended over the other?
- Thickness of walls that separate rooms from the greenhouse.
- How wide is the greenhouse hallways, how wide is the greenhouse garden bed?
- How deep are the rooms, how wide are the interior garden beds?

Any other general dimensions I should be aware of when making idea sketches? I'm at a roughly 47-deg latitude.
2 years ago