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An electrified reef is an artificial reef where a small low voltage electric charge is applied to a sub-sea metallic structures that causes limestone to precipitate onto a metal frame onto which coral planulae can then attach and grow; the process also speeds up post-attachment growth.
Historically timber frame structures were built with oak in western Europe, recently douglas fir has become the most popular wood for most types of structural building. Many families or communities, in rural areas, have a personal woodlot from which the family or community will grow and harvest trees to build with or sell. These lots are tended ...
Inside the boxes, frames are hung parallel to each other. Langstroth frames are thin rectangular structures made of wood or plastic and typically have a plastic or wax foundation on which the bees draw out the comb. The frames hold the honeycomb formed by the bees with beeswax. Eight or ten frames side by side (depending on the size of the box ...
Honeycomb structures are natural or man-made structures that have the geometry of a honeycomb to allow the minimization of the amount of used material to reach minimal weight and minimal material cost. The geometry of honeycomb structures can vary widely but the common feature of all such structures is an array of hollow cells formed between ...
Structural engineering is a sub-discipline of civil engineering in which structural engineers are trained to design the 'bones and joints' that create the form and shape of human-made structures. Structural engineers also must understand and calculate the stability , strength, rigidity and earthquake-susceptibility of built structures for ...
A small cob building with a living roof Porch of a modern timber framed home. Natural building or ecological building is a discipline within the more comprehensive scope of green building, sustainable architecture as well as sustainable and ecological design that promotes the construction of buildings using sustainable processes and locally available natural materials.
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Concrete frames, also known as a concrete skeleton, is a structure composed of interconnected beams, columns, and slabs that is used to support larger structures. [ 1 ] [ 2 ] Due to the low cost of producing them, concrete frames are often used when building damns, bridges, and buildings.