There are many web sites online with geodesic dome how-to's, diagrams and calculators. You simply get some wood bars, cut them to appropriate length and connect them.
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Straw Bale Dome » Domerama. There are many web sites online with geodesic dome how- to’s, diagrams and calculators. You simply get some wood bars, cut them to appropriate length and connect them together according to a diagram. The structure is very rigid and strong. A moderate V3 6m (1. Here is our small test house geodesic dome skeleton: We decided to combine the geodesic dome structure with the straw bale home idea. Using straw bales and clay as the walls.
This is very cheap, easy and energy efficient. And this small hut is supposed to be a test house so that we can learn the process and make mistakes and learn. So far we have learned so much stuff what not to do. We dug out soil about 6m (1. A perforated drain pipe was put underneath it all to drain the water out to the nearest ditch. On top of that we put the geodesic dome wooden structure with doors and began to cover that structure with straw bales: It is not very common in our country to store straw in bales anymore, few farmers are doing this and with old and low quality machines.
Most farmers roll the straw in a huge bobbins and this is also one thing in favor of insulation foam instead of hay (more on this at the end of the page). You can get straw only seasonally in autumns or summer ends, but that is already too late for starting building, you need to store the bales properly through the winter. You need to stuff all the gaps between the straw bales with straw and you are ready for the first layer of clay/straw mixture. The first layer is made using very liquid mix, so that it sticks good to the straw. You can not use thick mix for the first layer – it wont stick. Only when the first layer is done, you can begin with the next one. You need to do all the inside and outside clay works before you can proceed to waterproofing the inner and outer surface.
There is also always a possibility of straw bales beginning to rot and other difficulties, that is why you would need to build everything as fast as you can so that straw bales have no chance to get wet. A little wetness is nothing bad, it dries fast, but prolonged wetness can cause problems. The dome structure is very solid, it now supports around 3- 4 tons of weight with all the clay and straw bales. The work is rather hard and weather dependent, if it is raining, you need to cover the dome with something to prevent water damage, if it is sunny, you need to remove the rain protecting plastic or whatever so that clay can dry better. This is a time- consuming but fun project.
We are constantly exploring ways of how to do this faster and easier. If you make a clay/water slurry sprayer, that will save you a LOT of work. This first thin layer is needed so that the next layer will stick better. With the next layer you use much thicker mix of clay, sand and straw and fill all the deepenings, voids and cracks till the surface becomes smoother like this: When all the layers are ready, smooth and dried, the surface is covered with linseed oil and turpentine mix in three layers. The linseed oil penetrates inside the clay up to 5mm (1/4 inch) or so and when it dries, the surface becomes very hard and waterproof.
The insulation properties of such a home are great, we have a heat wave here now and sometimes the outside temperature reaches 3. Celsius, but inside the dome house it is nice and cool.(Click on images to enlarge) We have still much to do, but this is a fun project and if it will survive the winter, then we will start working on a bigger and better house. Overall this is really a cheap, easy to build and efficient house type. Anyway, we are now thinking about using polyurethane foam insulation about 7.
LOT of work, it is faster, just few hours to cover the whole structure, it is rain proof and very light material. Its insulation properties is very great, 1. Also nothing can rot or settle down over time. You just need to cover it with decorative coat of UV resistant paint or plaster and that is it. The foam is very hard and firm, you almost can’t press your finger in it, much denser and firmer than straw bales.
Sure, it will cost a bit more, but that is well worth because it saves you almost 7. I have calculated that if I went with the foam from the beginning, I would already be done long time ago and would have saved some money, that I payed my workers. The following was in great part contributed by Jetijs, senior member on the Energetic forum.
Build a shed from straw bales#1 How to Build a Geodesic Strawbale Dome – dome manufacture#2 How to Build a Geodesic Strawbale Dome – Site preparation#3 How to Build a Geodesic Strawbale Dome – Laying the Foundation#4 How to Build a Geodesic Strawbale Dome – Floor Base#5 How to Build a Geodesic Strawbale Dome – Placing the Bales#6 How to Build a Geodesic Strawbale Dome – The Entrance#7 How to Build a Geodesic Strawbale Dome – The Interior.
America’s First Free- Roaming Genetically Engineered Insects Are Coming to New York. Diamondback moths may be a mere half- inch in length, but their voracious appetite for Brussels sprouts, kale and cauliflower make them a major pain for farmers. This week, the U. S. Department of Agriculture approved a potential solution: moths genetically engineered to contain a special gene that makes them gradually die off. A field trial slated to take place in a small area of upstate New York will become the first wild release of an insect modified using genetic engineering in the US. Traktor Scratch Pro Serial Key more. The moths have been engineered by the British biotech firm Oxitec, the same company that last year caused a stir with its plans to release genetically modified, Zika- fighting mosquitoes in the Florida Keys. The diamond back moths take a similar approach to the mosquitoes, modifying male mosquitoes to limit the population over time by passing on a gene to offspring when it mates with wild females that causes female moths to die before they reach maturity.
The technique is a riff on an approach used to manage agricultural pests since the 1. Using radiation, scientists made insects like the screwworm unable to produce viable offspring. By 1. 98. 2, screwworm was eradicated from the US using this alternative to pesticides. In “Silent Spring” Rachel Carson suggested this approach was the solution to the dangers of harmful pesticides agricultural producers required to protect their crops.
The problem was that it did not work on every insect—in many cases, it simply left irradiated insects too weak to compete for mates with their healthier kin. Diamondback moths are a sizable problem for farmers, and a problem that’s growing as the moths develop resistance to traditional pesticides.
They do about $5 billion in damage to cruciferous crops worldwide every year. In the upcoming trial, a team at Cornell University will oversee the release of the genetically engineered moths in a 1. Cornell in Geneva, New York. After a review found that the field trial is unlikely to impact either the environment or humans, the USDA issued a permit that allows for the release of up to 3. It is caterpillars that damage crops, so the plan to release adult males that produce unviable offspring should not cause any additional crop damage.
And any surviving moths will likely be killed off by pesticides or upstate New York’s frigid winter, according to the report submitted to the USDA. The plan to release modified mosquitoes in the Keys attracted much local ire—after initially getting the greenlight from the FDA, the project was ultimately stalled by a local vote and forced to find a new location for a trial. In upstate New York, too, the moths have stirred up a debate over GMOs for the past several years, though the plan has not been met with quite the same level of opposition. The approval process through the USDA rather than the FDA, too, was much swifter.
In laboratory and greenhouse trials, the modified mosquito was reportedly effective in decreasing the overall population. But tests still need to determine how it will fare in open air. Oxitec has released its engineered mosquitoes Brazil, Grand Cayman, and Panama, and still plans to go ahead with a field trial in the Keys. In December, the company announced plans for field trials of a genetically modified Mediterranean fruit fly in Western Australia. It is also working on genetically engineering several other agricultural pests, including Drosophila suzukii and the Olive fly.