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04:29 Feb 16, 2015 |
English to Spanish translations [PRO] Construction / Civil Engineering / A questionnaire for home earthquake damages | |||||||
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| Selected response from: Toni Castano Spain Local time: 05:27 | ||||||
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Summary of answers provided | ||||
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4 +1 | Cimentación perimetral elevada de hormigón |
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Cimentación perimetral elevada de hormigón Explanation: Lo que yo entiendo es que la casa tiene una cimentación perimetral de hormigón que está elevada artificialmente (raised foundation) por medio de pilares (pier supports) o bloques de hormigón (cinder blocks), por contraste con la “cimentación de losa de hormigón” (slab foundation), donde no hay elevación y la casa reposa directamente sobre la losa. Por lo que he leído, en un área geográfica de alta sismicidad, como California, estos dos tipos de cimentación (“slab” y “raised”) son los más habituales y el debate es en torno a cuál de los dos es más seguro en caso de terremoto. -------------------------------------------------- Note added at 4 hrs (2015-02-16 08:32:47 GMT) -------------------------------------------------- https://scottrobinsonrobinsonrealtyblog.wordpress.com/2014/0... What is a raised vs. slab foundation?by Scott Robinson As far as I can tell, there are only two types of foundation that rest on the ground: raised and slab. I will try to get to what hangs off a cliff/cantilevered at a later time. A raised foundation is accomplished mostly with a foundation around the perimeter of the house (sometimes stone or concrete block.), supporting the structure under the house. In real old houses say before the 1950′s they used “post and pier” foundation. There would be the foundation around the house and little posts holding up points inside between the cement exterior. Usually just wood stuck their on little cement blocks. No strapping or anchor in the ground! Now they have to be anchored with metal straps. A slab foundation is when they dig out the area you are going to build the house on, lay the plumbing and some electrical, steel supports to tie into, re-bar to support the cement and then pour the cement which becomes the foundation. As I understand four inches thick. A very solid structure held together with a network of long steel rods almost a half inch thick, called re bar. Raised foundations are good because if you have a problem with plumbing or electrical you can crawl under the house and fix it, they aren’t encased in cement as above. If an earthquake or settling takes the level out of the house you can fairly simply level it. Much cheaper than re-pouring part of your slab. The bad news is that over time a raised foundation is subject to dry rot, fungus, termites and rat infestation among other things I am sure. Nothing that can’t be dealt with. But in nature all things tend to have issues. A slab foundation is what is mostly used to day. Cheap, easy and efficient, less edible and at the mercy of the elements. http://earthquakeproof.weebly.com/raised-foundation.html Raised Foundations A raised foundation is a foundation that is raised up off of the ground usually by CMUs (cinder blocks). Tralier homes have raised foundations because they are held up off of the ground by the cinder blocks which the house rests on. A raised foundation is a shallow foundation. An example of an unstable home after an earthquake would be a home with a raised foundation. (A trailer home is an example of a raised foundation.) On the raised foundation the home would be able to either move up off of its support (which would normally be CMUs or cinder blocks) or the foundation and home could start to move and spread apart like what happened in our experiment. http://www.craftsmanfoundation.com/raised.html Raised Foundations: A raised foundation typically consists of a foundation stemwall and footing supporting the exterior walls of the house, with the middle portion supported on posts and piers. Sometimes in more modern raised foundations there is a stemwall bisecting the middle of the house. The perimeter is usually concrete, but can be constructed with brick, concrete blocks, mortared rocks or even posts and piers as a perimeter, which is placed on a footing. The footing is considered to be the portion of the foundation below ground. The posts and piers consist of a poured or precast concrete pier, usually with a footing extending below grade. -------------------------------------------------- Note added at 4 hrs (2015-02-16 08:36:27 GMT) -------------------------------------------------- Aquí la definición de CMU (concrete masonry unit), importante en este contexto: http://en.wikipedia.org/wiki/Concrete_masonry_unit A concrete masonry unit (CMU) – also called concrete brick, concrete block, cement block, besser block, breeze block and cinder block – is a large rectangular brick used in construction. http://es.wikipedia.org/wiki/Bloque_de_hormigón Un bloque de hormigón o tabique de concreto es un mampuesto prefabricado, elaborado con hormigones finos o morteros de cemento, utilizado en la construcción de muros y paredes. |
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