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Sustainable Housing that can be Recycled

Sustainable Housing that can be Recycled

Building a house from the ground up can be environmentally damaging. Buildings have a significant carbon footprint, with over 41% of global energy consumption attributed to buildings and structures. Buildings and materials also produce dangerous emissions that pollute our air, and the construction industry alone generates more than 170 tons of debris annually. There is also the issue of landfill waste, excessive use of water and noise pollution caused by the construction of buildings and houses.

SPEE Architecten, an architecture firm in the Netherlands, may have found a sustainable solution for building houses. Their projects focus on innovation and sustainability and creating healthy elements for both the residents and the environment. The architects created their newest project Speehuis House to create a site that minimally impacts the surrounding trees and wetlands with a structure that could be dismantled and recycled.

The house was built in a wooded area adjacent to a wetland area. The house’s form, size and layout are tailored to the needs of a family with three and adjoins SPEE Architects’ office premises. Large, strategically-placed windows offer a lot of natural light to the inner spaces and views of the outdoors. The entire house is made of circular and biobased materials. For example, the exterior walls and sloping roofs are made from untreated, high-density, biobased bamboo slats.

The team used Bamboo X-treme beams which consist of more than 90% of thermally modified bamboo strips. Bamboo absorbs a lot of CO2 during its growth, which remains stored throughout the product’s lifespan. Bamboo X-treme is extremely durable, dimensionally stable, and harder than most types of wood. When the bamboo fibers and resin are compressed at high temperatures, the natural sugar in the bamboo caramelizes, rendering it rot-resistant. These materials can be conveniently dismantled, adapted and recycled as need be.

Most of the home’s shell, including the stairs, interior doors, desks and cabinets, is made from cross-laminated timber that was chosen to avoid using concrete. The entire shell was prefabricated in less than a week. The wood was sourced from responsibly managed forests and was selected to create a natural and healthy indoor environment and a carbon sink. The architecture team estimates that over 93 000 kg of CO2 is stored within the building. In comparison, the same building built in concrete would produce 46,694 kg of CO2.

The home that SPEE Architecten has built shows us a future of what the construction industry can look like and how we can live more sustainably. The design is spacious and tasteful and allows for comfortable living without causing harm to the environment. If more architecture firms transitioned to building homes like the Speehuis House, the environmental impact from the construction industry would decrease substantially.

 

 


 

 

Source Happy Eco News

Peatlands are under threat. Here’s why we must act now to save them

Peatlands are under threat. Here’s why we must act now to save them
  • Peatlands play a huge role as carbon sinks and biodiversity hotspots.
  • Centuries of depletion, either by drainage or peat extraction, have put them under huge risk.
  • The damage can be reversed, as current projects demonstrate.
  • We must regenerate damaged peatlands and save those that still exist today.

Wetlands are known by many names such as peatlands, marshes, bogs, fens or mires. What they all have in common is that their landscape is temporarily or permanently saturated with water. But if you think that these areas are just swamps with no significant role, then you are wrong. These landscapes are of special importance – not only for their water storage and purification capacity, but also in their roles as carbon sinks and biodiversity hotspots.

Why are peatlands important?

Peatlands are a particular type of wetland that builds up peat by accumulating dead plant material, which is prevented from biodegrading thanks to the water saturation. In peatlands, this constantly growing layer of organic matter (peat) slowly accumulates carbon and permanently sequesters it. And even though little attention has been given to peatlands so far, their hidden potential is enormous. Currently covering around 3% of the earth’s solid surface, peatlands store around 33% of the world’s overall carbon, which represent more carbon than in all forests combined worldwide.

Peatlands are also hotspots for biodiversity. Although few plant and animal species live in these nutrient-poor, acidic and wet raised wetlands, those that do are highly specialised and dependent on this habitat.

An intact peatland also contributes to a balanced water budget for an entire landscape by helping attenuate floodings during heavy precipitation.

Peatlands are at risk

Peatlands have been at risk for centuries. They are either drained to make way for fertile pasture and cropland, or they are destroyed by the extraction of peat, which is used as a source of energy. When peatlands are drained, their peat is exposed to air and releases its carbon in form of CO2, 20 times faster than it was sequestered.

Peatlands in Switzerland

In the early 19th century, there were around 250,000 hectares of wetlands in Switzerland. This area had already reduced by 40% by 1900; today there are less than 2,000 hectares left. This means that over the past 200 years, more than 90% of the peatlands in Switzerland have been lost. They might be gone altogether within this century if no action is taken.

Restoring peatlands

To avoid this nearly irreversible loss, regeneration measures have been taken in around 30% of the remaining Swiss peatlands over the past three decades. To date, regeneration projects have been financed mainly by the Swiss federal government and the cantons.

As part of its sustainability efforts for the 2019 Annual Meeting, the World Economic Forum also supported the restoration of 2.5 hectares of three different peatlands in the region of the Engadin in the Grisons, two of which are now completed. Acknowledging that an event such as the meeting in Davos by nature consumes finite resources and causes emissions, the Forum wanted to take responsibility for both. In addition to measuring and offsetting these, the Forum also sought to create a positive legacy within the region that hosts the Annual Meeting.

The biggest of the three sites – ‘Salastrains’, in St. Moritz – was drained in the last century by the installation of artificial ditches and its peat was mined for heating purposes. Three restoration measures have been taken in response: First, the installation of watertight wooden dams around the area; second, damming the old drainage ditches; and third, directing the spring water back into the bog area. The peatland area is now rewetted, stopping biological degradation and the release of CO2 emissions, but instead sequestering carbon. Regular plant samples allow us to assess the condition of the rewetted area, and progress of the peat development over time. A final report on this project will be published in April this year.

With only 1 to 10 millimetres of peat being built up per year in a peatland, regeneration measures are indispensable, and protecting the remaining peatlands is crucial.

Read more about sustainability at the Forum: http://wef.ch/sustainability