sábado, 30 de novembro de 2013

A verdadeira Casa Hobbit Sustentável 3

 Agricultor inglês constrói "casa verde" por 150 libras / + de 150€ / 500 reais - e esta, sim, uma verdadeira casa Hobbit!

Casa pronta por 500 reais

Acredite: inglês faz construção completa com materiais descartados e 150 libras. Entenda como é possível

Acredite: essa casa inteira foi construída por pouco mais de 500 reais (Foto: Divulgação)

Para a maior parte das pessoas, o desejo de construir uma casa parece distante devido aos preços altíssimos de terreno, mão de obra e materiais. Mas o fazendeiro inglês Michael Buck provou ser possível tornar este sonho realidade, usando métodos e recursos pouco convencionais. Ele ergueu a moradia em sua propriedade com apenas 150 libras, o equivalente a pouco mais de 500 reais, sem a ajuda de mais ninguém. Para economizar, foram usados recursos descartados por outras pessoas ou simplesmente tirados da natureza. As paredes, por exemplo, são feitas de uma mistura de areia, argila, palha, água e terra. Foram oito meses de obra, sem nenhuma ferramenta – Buck fez tudo com as próprias mãos.
saiba mais
Com um orçamento tão apertado, o resultado é um pouco rústico. O teto é feito de palha, o piso de madeira foi resgatado de uma casa em demolição e os vidros das janelas vieram de um caminhão abandonado. Não há eletricidade, gás ou água encanada. Também não há sistema de aquecimento, o que poderia ser um problema no inverno europeu. Mas, segundo Buck, as grossas paredes impedem o frio de entrar e o teto é forrado por peles de carneiro. O fogão é a lenha e a luz vem somente de velas e lamparinas. São 28 m², com espaço para apenas um morador. Pode parecer arcaico demais para algumas pessoas, mas pensando no preço total, pode até valer a pena abrir mão de alguns confortos em nome da casa própria.
Tudo é bem simples e rústico (Foto: Divulgação)
Buck fez a casa com suas próprias mãos (Foto: Divulgação)
Muitos dos materiais foram tirados do próprio terreno, como a palha (Foto: Divulgação)

 

How to build a Hobbit house: A step-by-step guide to the £150 cottage built only from natural and reclaimed materials

  • Ever wondered how to build a fully functioning cottage for £150?
By Steve Bird
|

This week, the Mail reported how smallholder Michael Buck built a cottage on his land in Oxfordshire for just £150 using only local, natural and reclaimed materials. Mr Buck, a 59-year-old former art teacher, didn’t use any power tools to build the 300 sq ft house, which has no mains electricity, gas or water.
‘A house does not have to cost the Earth — you only need earth to build it,’ he explained.
STEVE BIRD explains how he did it . . .
Michael Buck outside the cob house which he built for £150
Michael Buck outside the cob house which he built for £150

Walls

Michael Buck and his friends first mashed up or ‘poddled’ a wet mud and straw mixture — known as cob — stamping barefoot on it on a large sheet made from the skin of an old trampoline found in a skip.
‘Poddling with the feet is very important,’ he says. ‘Being barefoot is far more efficient than wearing boots to mix it. It used to be done by cattle. It’s a wonderful sensation as it squidges between your toes.’

The walls of the cottage are made from a mashed-up wet mud and straw mixture
The walls of the cottage are made from a mashed-up wet mud and straw mixture
 
The straw mixed into the cob came from a nearby horse yard and cost £150 — the only money spent on the building project.
The water added to the cob mixture came from a well Mr Buck had dug, and the sand and clay came from the soil dug out for the foundations.
The cob was then shaped into bricks and left to dry before being used to build the walls.
The walls rose 4in each day of building. Mr Buck then used a large knife to smooth them into shape. The whole process took four months.

Ceiling

The ceiling inside is made from wattle and daub — a framework of woven sticks and mud-based plaster — and insulated with sheep’s wool donated by a local farmer.

Roof

Timber for the roof was taken from poplar trees in a nearby wood.
The roof structure runs through the top of the walls and up to a crest. Mr Buck taught himself to thatch, using long straw wheat grown by a local thatcher and reed found at Duke’s Cut, a waterway that connects the Oxford Canal with the River Thames.
He carried it to the house in 10ft bundles to avoid a carbon footprint. The thatch is held in place by intertwined sticks of local hazel.

Mattress

Sheep's wool stuffed into a duvet was used to make a mattress for the bed on the wooden mezzanine.

Flooring

The floorboards are made from reclaimed wood salvaged after the local Woolworths store in Oxford city centre closed down.
The floorboards in the Hobbit house are made from reclaimed wood
The floorboards in the Hobbit house are made from reclaimed wood

Lighting

Alcoves were moulded into the interior walls so candles could be used to light the building.
Cob houses are almost fireproof because so little wood is used. The density of the walls, usually around 2ft thick, ensures the house is well insulated.

Chimney

This was made of cob bricks and topped with broken tiles found around the site to prevent rain coming down it.
The chimney was topped with broken tiles found around the site
The chimney was topped with broken tiles found around the site

The house itself is heated with a wood-burning stove.

Bathtub and sink

Hanging outside is a large, metal bowl that can be filled with water from an ancient nearby spring. The bowl serves as a sink, bath tub and washbasin.

Windows

A lorry windscreen found in a rubbish tip was fitted as one window.
The windows in the house are made from items including a lorry windscreen
The windows in the house are made from items including a lorry windscreen

Three discarded wooden windows from the same tip were turned upside down so the rotten lower sills became the top sills.
The glass and frames were fitted into the walls and gothic-style windows set in the cob mix.

Foundations

The site had to be on ground with the ideal soil to form the basis of the mixture used in the ancient ‘cob’ building style — where bricks are made from a combination of earth, sand, clay, straw and water.
The technique is believed to date back to prehistoric times and is still common in the Middle East and Africa.
A delivery of straw which helped to make the mixture to create the cob house
A delivery of straw which helped to make the mixture to create the cob house

Too much clay in the soil and the cob bricks will become brittle and fracture; too little and they will crumble. Luckily, the soil in Mr Buck’s smallholding contains the perfect amount of clay.
He dug the foundations a foot deep to get to the ‘subsoil’, which he set aside to make the cob mixture. Then he created foundations from large stones taken from a neighbour’s dilapidated wall, adding some of the cob mixture as a form of cement.
This image shows how Michael Buck used the cob technique to create a window at the unique Hobbit cottage
This image shows how Michael Buck used the cob technique to create a window at the unique Hobbit cottage

Plaster

The outer layer of the wall was plastered with a smoother type of cob mixture. It included crushed-up bullrush heads from a local stream and cow dung from a nearby dairy to add some texture to the mixture.
The names of the three cows — Marigold, Crystal and Mist — which contributed are inscribed on the wall of the cottage.

Paint

The walls inside and out were finished with ‘Ali’, a cross between plaster and paint which is made from plant resin, clay and chalk, which Mr Buck collected from the Chiltern Hills, and flour that he ground himself on his farm.

Kitchen

The marble kitchen worktop and the woodburning stove were donated by Mr Buck’s sister during the renovation of her Dorset home.
Some poplar branches are built into the walls of the kitchen, from which pots and pans can be hung.

Outside loo

The lavatory is a ‘composting toilet’ that uses sawdust and moss to conceal and break down waste.
It’s also a loo with a view — of the beautiful, rolling Oxfordshire countryside.
Michael Buck and the cob house he has built for just £150 without using any power tools
Michael Buck and the cob house he has built for just £150 without using any power tools


Aqui em inglês do Mirror com mais fotos: http://www.mirror.co.uk/news/uk-news/pictured-michael-bucks-hobbit-style-cob-2850553

E aqui em francês: http://lesmoutonsenrages.fr/2013/11/29/un-agriculteur-anglais-sest-construit-une-maison-verte-pour-150-euros/

Casa hobbit sustentável 2

Já tinhamos falado duma casa hobbit sustentável (aqui) e aqui fica outra versão para países mais quentes (Tailândia).
Pessoalmente considero aquele lago com as flores de lótus um primor e um sonho para ver ao despertar :)
Bom fim de Semana!


Como construir uma casa sustentável fantástica com 18 mil reais
Construção barata, simples, sustentável e que ainda permite poupar espaço – o que mais poderíamos pedir pra resolver alguns problemas habitacionais das nossas cidades? Steve Areen, ex-comissário de bordo e fotógrafo americano, está dando que falar por conta de sua Dome Home, uma casa construída na Tailândia em apenas 6 semanas e que custou 8 mil dólares (pouco mais de 18 mil reais).
Tudo começou com as viagens: durante 22 anos, Areen correu o mundo e os lugares mais remotos deste planeta, normalmente sozinho (ele diz que a curiosidade é sua maior companheira). Em uma dessas viagens, o fotógrafo encontrou um pedaço de terra no noroeste da Tailândia, um mangueiral onde decidiu construir uma casa inovadora.
Ele pegou em tijolos de concreto e, com dois ajudantes e com materiais conseguidos junto da população, construiu portas, prateleiras, um lago e uma pequena varanda. A casa é ainda aquecida naturalmente e iluminada por enormes janelas, com um quarto com telhado verde. O banheiro é uma espécie de pátio, com plantas e água.
Além de sustentável e barata, a casa é linda por dentro e por fora, e nos obriga a refletir sobre a importância que damos às coisas materiais. Dá uma olhada no processo de construção e no resultado final.
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A Dome Home (que significa qualquer coisa como “Casa-Cúpula”, pelo seu aspeto exterior) é inspirada na ideia de “compact living” japonesa, num país onde a sobrepopulação obriga a pensar novas formas de habitação. Areen quer levar o conceito para os Estados Unidos, mas o desafio é maior, pelas leis de construção e habitação mais rígidas do país.
Steve gravou inclusive um vídeo apresentando a sua casa inovadora, olha só:
Pra ver mais, é seguir a página pessoal do fotógrafo e artista.
todas as fotos © Steve Areen

Fonte: http://www.hypeness.com.br/2013/11/f-casa-sustentavel-em-forma-de-cupula-feita-em-6-semanas-com-18-mil-reais/?fb_action_ids=10201965116902312&fb_action_types=og.recommends&fb_source=other_multiline&action_object_map=[177733529102086]&action_type_map=[%22og.recommends%22]&action_ref_map=[]

quinta-feira, 28 de novembro de 2013

Cometa Ison ainda em acção

Ora o cometa Ison  passa amanhã bem pertinho do Sol e "sobreviverá" :) se tudo correr como previsto. Desse modo será visível em Dezembro, se as noites estiverem claras (ver imagem abaixo com datas nas regiões com latitude 40º).
E é sabido desde a Antiguidade - e com muitos medos escatológicos na Idade Média - que a passagem/avistamento de cometas está associada a eventos geomorfológicos, climáticos, electromagnéticos de excepção (parece-me que o Ison não se importa que lhe atribuam as culpas dos males presentes :-) e até talvez leve com compaixão todos esses receios da consciência de massas, coincidindo com o dia de Acção de Graças dos Americanos)


Comet ISON brightens as it closes in on Thanksgiving's solar climax

Image: Composite sun image
NASA / SDO / ESA / SOHO / Helioviewer.org
A composite image, based on data from NASA's Solar Dynamics Observatory and the Solar and Heliospheric Observatory, shows the sun and its coronal activity as well as Comet ISON approaching from the lower right.

For more than a year, Comet ISON has been taking skywatchers on a roller-coaster ride, but the most dramatic thrill is coming up on Thursday — and the prospects look good for a spectacular show.
Over the course of less than a day, the comet's brightness "has increased by at least a factor of four, and indications are it may be closer to a factor of 10," the NASA Comet ISON Observing Campaign reported on Wednesday.
When we last checked in with what was once called the "comet of the century," ISON was heading toward the sun at the same time that a solar storm was pushing outward. Karl Battams, an astrophysicist at the Naval Research Laboratory who's part of the observing campaign, was almost gleeful over the prospect that the cosmic storm cloud would interact with the comet's tail.
However, it turned out that the cloud of electrically charged particles, also known as a coronal mass ejection, had no significant effect. "The source of the cloud is a farside active region, which is not directly facing the comet," SpaceWeather.com's Tony Phillips reported.

A series of images from the SOHO spacecraft shows Comet ISON approaching the sun as a solar storm sweeps outward.

Even if the outburst had swept directly over ISON, that alone wouldn't have caused the comet to break up. However, some observers wondered whether the comet's nucleus or tail is being disrupted. So far, the images from the Solar and Heliospheric Observatory's LASCO C3 detector suggest that ISON is keeping it together. Mostly.
Battams reported that the comet had brightened to around magnitude +0.5, which is as bright as the star Betelgeuse in the "shoulder" of the constellation Orion. What's more, ISON appears to be behaving like a classic sungrazing comet. That is, it's behaving like Comet Lovejoy (C/2011 W3), which weathered its whirl around the sun and dazzled the Southern Hemiphere two years ago.
"We cannot comment on whether the nucleus is intact or not, but our analyses indicate that its rate of brightening is directly in line with that we have experienced with other sungrazing comets," Battams wrote. "This has no implications on its chances of survival."

Image: Finder chart
Sky & Telescope
 Assuming that Comet ISON survives, here's where to look for it in pre-dawn skies during December. The Sky & Telescope chart is drawn for skywatchers near 40 degrees latitude (Denver, New York, Madrid) but should serve for most northern temperate latitudes. The blue 10-degree scale is about the width of your fist held at arm's length. Check SkyandTelescope.com for more charts and updates.

Battams and his colleagues on the observing campaign advised solar observatories to watch for the comet to get even brighter as it rounds the sun. They also advised casual observers not to try looking for ISON in the sky over the next couple of days, due to the risk of eye damage. (But if you're set on trying, Sky & Telescope's Alan McRobert provides an observing guide.)

The best bet is to monitor the comet's passage online.
The climax comes around 1:37 p.m. ET Thursday, when ISON zooms within 730,000 miles (1.2 million kilometers) of the sun at a top speed of 850,000 mph (380 kilometers per second). For expert commentary and views from NASA's Solar Dynamics Observatory, tune into a Google+ Hangout that's scheduled from 1 p.m. to 3:30 p.m. ET Thursday. You'll hear from Battams as well as solar physicists C. Alex Young and W. Dean Pesnel, plus Phil Plait, the astronomer behind the "Bad Astronomy" blog.
SDO images and movies will also be posted to NASA's Comet ISON Perihelion website. You can keep tabs on the images from the Solar and Heliospheric Observatory by checking the SOHO website (but don't be surprised if the Web traffic is as frantic as an airport before Thanksgiving). Comet ISON is also popping up in images from NASA's sun-watching STEREO spacecraft. NASA offers loads of information and imagery on its Comet ISON portal page.
Other sources for ISON pictures include this Flickr photo pool and SpaceWeather.com's gallery.
If the comet survives intact — or even if it takes a beating, as Lovejoy did in 2011 — you can expect ISON to make a spectacle of itself starting in early December. Northern Hemisphere skywatchers would have the best vantage point: The comet would appear in east-southeast skies, just before the sun comes up. As the month progresses, ISON would be visible higher and higher in the sky — and eventually, it could be seen in western skies after sunset as well as eastern skies before sunrise.
But we're getting ahead of ourselves: Let's find out on Thanksgiving Day whether ISON turns into a triumph ... or a turkey.
Update for 5:10 p.m. ET: Battams and his colleagues are at the Kitt Peak National Observatory in Arizona to keep tabs on ISON, and he emailed this dispatch:
"It's crazy busy with a bunch of film crews and science crews, but it's tremendous fun :)
"I've not seen any tail effects that get me excited, but I really haven't had chance to use any of the processing methods that would highlight those. I see no evidence of a disconnect.
"Words of wisdom? Don't step away from the computer screen! We really have zero idea of what is going to happen over the next 48 hours. ISON has stubbornly refused to conform to any preconceptions we've had of it, and I see no reason why it will start playing ball now! No one knows how this story is going to end, but either way it's a real cliffhanger!!"
Update for 6:30 p.m. ET: In his latest blog update, Battams addresses a number of frequently asked questions, including this one: "Is ISON a threat to Earth?"
"I know many of you might roll your eyes here, but some people are genuinely concerned. So, for the record, Comet ISON will never be any kind of threat to Earth WHATSOEVER. On Dec. 26 is will pass about 0.44AU from Earth, which is about the same distance that Venus sits at. There is a possibility in January that Earth might pass through ISON's tail but it is critical to realize that Earth does this all the time. Every meteor shower we see — and there are lots of them — is a result of Earth passing through a debris trail in space. They are completely harmless. I really don't think that we will even notice a meteor shower in our skies but if we do, it will only be a handful of shooting stars every few hours. Barely noticeable and completely inconsequential."

For updates on Comet ISON, keep tabs on Space.com, the Comet ISON Observing Campaign, Hubblesite's ISONBlogSpaceWeather.com and the websites for Astronomy Magazine and Sky & Telescope. On Twitter, follow @ISONUpdates, @CometISONnews, @CometISON2013, @SungrazerComets and @Cosmos4u.
Alan Boyle is NBCNews.com's science editor. Connect with the Cosmic Log community by "liking" the log's Facebook page, following @b0yle on Twitter and adding the Cosmic Log page to your Google+ presence. To keep up with Cosmic Log as well as NBCNews.com's other stories about science and space, sign up for the Tech & Science newsletter, delivered to your email in-box every weekday. You can also check out "The Case for Pluto," my book about the controversial dwarf planet and the search for new worlds.