RMStarboardCork.JPG
Page data
Keywords construction, Earthen construction, Green living
SDGs Sustainable Development Goals SDG11 Sustainable cities and communities
Authors Maureen Webb
Felipe Schenone
Ethan
Chris Watkins
Published 2006
License CC BY-SA 4.0
Ported from https://permaculture.fandom.com/wiki/Housing
[see first revision]
Derivatives Ujenzi mbadala
Page views 10,506

Alternative building refers to construction methods that differ from mainstream modern architecture. They often use natural building materials, with a strong emphasis on sustainable design. Recently, popular housing materials, such as treated lumber, synthetic insulation and certain paints (to name a few) have been exposed as harmful to both the environment and the inhabitants of the houses. There is no dispute over this issue; anyone who cares to ask will find that treated lumber releases the preservatives and poisons which it was soaked in over a predictable period of time. This is where alternative construction comes in.

While green buildings most often include high technology as part of their design, alternative buildings more often depend on traditional designs (reflecting wisdom which has evolved over many generations) and creative use of locally available materials and limited resources. Indeed, some would say that "alternative building" is quite an odd phrase, considering that the strategies used to conserve energy and materials have been documented for millennia in some cases. Practices such as adobe, wattle and daub, mud-brick, rammed earth, earth bag and straw bale housing construction is alive and well. In many instances the houses are less expensive to build and maintain, healthier to live in and more sturdy and reliable than those made from "conventional" materials.

Projects on Appropedia[edit | edit source]

Benefits[edit | edit source]

Alternative building methods involve Eco and Green Developments which are designed to minimize energy requirements.

Sustainable buildings use materials which have a low environmental impact, eliminate sewage and wastewater pollution issues, protect the natural environment. They also promote the health and wellbeing, both physical and mental, of the occupants and those living and working close to the development.

An alternative or natural building involves a range of building systems and materials that place major emphasis on sustainability. Ways of achieving sustainability through natural building focus on durability and the use of minimally processed, plentiful or renewable resources, as well as those that, while recycled or salvaged, produce healthy living environments and maintain indoor air quality. Natural building tends to rely on human labor, more than technology. As Michael G. Smith observes, it depends on "local ecology, geology and climate; on the character of the particular building site, and on the needs and personalities of the builders and users."

The basis of natural building is the need to lessen the environmental impact of buildings and other supporting systems, without sacrificing comfort, health or aesthetics. To be more sustainable, natural building uses primarily abundantly available, renewable, reused or recycled materials. The use of rapidly renewable materials is increasingly a focus. In addition to relying on natural building materials, the emphasis on the architectural design is heightened. The orientation of a building, the utilization of local climate and site conditions, the emphasis on natural ventilation through design, fundamentally lessen operational costs and positively impact the environmental. Building compactly and minimizing the ecological footprint is common, as are on-site handling of energy acquisition, on-site water capture, alternate sewage treatment and water reuse.

Considerations[edit | edit source]

Alternative Eco Friendly Housing should encompass all of the following:

  • Environmental issues: Conservation of the sites natural resources, both plant, animal and mineral. Siting of the building for minimum heat loss through wind and shade and maximum heat gain from solar, high levels of insulation, maximising natural lighting, energy efficient appliances, sewage disposal and lighting systems.
  • Water and wastewater: Rainwater harvesting, water efficient appliances, minimizing and attenuating surface water run-off to prevent flooding and pollution. Sustainable solutions for the disposal of sewage, e.g. Sewage Treatment Plant Sustainable Filter Systems.
  • Transport: Public transport access, close to shops, leisure facilities and work, home offices to reduce commuting.
  • Materials: use of long-life sustainable materials with a low environmental impact avoiding those from non-renewable and non-sustainable sources, use of locally produced materials, use of recycled materials.
  • Health and wellbeing: use of non-toxic materials during all stages of the build and all areas of the building, natural daylighting, freedom from noise and pollution, green spaces, non-obtrusive design which flows into the surroundings.
  • Affordability and adaptability: affordable ownership, flexibility of design to adapt to the changing requirements of the occupants and future owners.

Permaculture[edit | edit source]

Perma flower notext.png
See Permaculture wiki for an explanation of how Appropedia works for permaculture.
Permaculture garden, de Vergoncey, France: [1].

Permaculture is a form of whole systems design based on the sustainability of natural systems, seeking to reproduce that sustainability in our living environment. Permaculture designs differ based on climatic factors, bioregion, organizational goals, personal preferences and other factors. They integrate "land, resources, people and the environment through mutually beneficial synergies – imitating the no waste, closed loop systems seen in diverse natural systems"[1] It can hence be said that permaculture is, at its core, a set of thinking tools, in particular towards awareness of context, threats and opportunities.

The holistic approach of permaculture integrates "agriculture, water harvesting and hydrology, energy, natural building, forestry, waste management, animal systems, aquaculture, appropriate technology, economics and community development".[1]

Types[edit | edit source]

Straw bale construction[edit | edit source]

Straw Bale House
Strawbale construction offers good thermal insulation, thermal mass, and (depending on the other materials chosen) only natural components, with benefits for indoor air quality.

Bamboo construction[edit | edit source]

Bamboo can be utilized as a building material for scaffolding, bridges, houses and buildings. Bamboo, like wood, is a natural composite material with a high strength-to-weight ratio useful for structures. Bamboo's strength-to-weight ratio is similar to timber, and its strength is generally similar to a strong softwood or hardwood timber.

Bamboos are some of the fastest-growing plants in the world, due to a unique rhizome-dependent system. Certain species of bamboo can grow up to 91 cm within a 24-hour period, or nearly 4 cm/h. [2]

Ecoladrillo[edit | edit source]

Ecoladrillo-square.jpg

There has been a drastic rise in the use of plastic bottles over the past couple decades. Ecoladrillo allows otherwise discarded plastic bottles and trash to be used as a raw material for building construction. Figure 1 is a picture of trash that has become common throughout many parts of the world.[3]

The name is taken from ladrillo, a Spanish word for a brick or or paving stone made from baked clay.

Earthen construction[edit | edit source]

An earth structure is a building or other structure made largely from soil. Since soil is a widely available material, it has been used in construction since prehistoric times.It may be combined with other materials, compressed and/or baked to add strength. Soil is still an economical material for many applications, and may have low environmental impact both during and after construction.

Earth structure materials may be as simple as mud, or mud mixed with straw to make cob. Sturdy dwellings may be also built from sod or turf. Soil may be stabilized by the addition of lime or cement, and may be compacted into rammed earth. Construction is faster with pre-formed adobe or mudbricks, compressed earth blocks, earthbags or fired clay bricks.

Types of earth structure include earth shelters, where a dwelling is wholly or partly embedded in the ground or encased in soil. Native American earth lodges are examples. Wattle and daub houses use a "wattle" of poles interwoven with sticks to provide stability for mud walls. Sod houses were built on the northwest coast of Europe, and later by European settlers on the North American prairies. Adobe or mud-brick buildings are built around the world and include houses, apartment buildings, mosques and churches. Fujian Tulous are large fortified rammed earth buildings in southeastern China that shelter as many as 80 families. Other types of earth structure include mounds and pyramids used for religious purposes, levees, mechanically stabilized earth retaining walls, forts, trenches and embankment dams.

Difficulties[edit | edit source]

Much of the trouble with acceptance in the mainstream comes from advertising. If a company knows that the average customer is perfectly capable of building their own house of readily available materials for a fraction of the market price, then that company must convince unaware consumers that the "alternative" option simply doesn't exist. Of course, with many of these same companies sitting on planning boards, alternative construction has been given quite an unfavorable reputation in some localities.

See also[edit | edit source]

External links[edit | edit source]

  • World Hands on Project, promotes the use of natural and recycled material in building.
  • Builders Without Borders, an international network of builders who advocate the use of straw, earth and other local, affordable materials.
  • Green Home Building, has a wide range of information about sustainable architecture and natural building.