Glenn Herbert wrote:Very cool looking, but I am concerned about its structural integrity. It gets 100% of its strength from the end walls, and depends on the lateral stiffness of the long facets to keep from collapsing in the middle. I think the original building the concept came from supports the roof facets at many internal points, so that it does not need to span much aside from the overhanging end.
If the greenhouse profile is a catenary arch, it would not have internal stresses, but a snow load would change that; you can't have it be stable both with and without snow. The vertical back wall would need to be braced to the ground to support the thrust if it does use any arch design.
Kevin Swanson wrote:This appears to be a more up to date site that has this calculator: http://www.ecosystems-design.com/climate-battery-calculator.html
Walt Chase wrote:Been to Chena Hot Springs before. Located NE of Fairbanks AK. One of the colder parts of the state in winter. They generate 100% of their energy needs along with a geothermal heated greenhouse. We toured the power plant and GH the last time we were there. It is a resort, but the owner is big into alternative energy and renewable s. Here is a link to their renewabl energy part of the website. https://chenahotsprings.com/renewables/