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Earth bag construction presentation-ilonkamarselis_11.6.2015
Earth-bag construction is a low-tech, sustainable building method utilizing natural materials that are resistant to natural disasters. The technique is adaptable for various structures, including emergency shelters and family homes, and emphasizes ecological principles. The document outlines the practical aspects of earth-bag building, including materials, construction methods, and design considerations.
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Earth bag construction presentation-ilonkamarselis_11.6.2015
- 1. earth-bag construction practical experiencewith natural building Ilonka Marselis
- 3. Building with theearth below your feet from one-day emergency shelter to ecological family home
- 4. Why earth-bag building? -Low-tech, natural building technique - Bullet, flood and earthquake proof - Thermal mass - Local - Low-cost - Easy - No need for wood - Organic shapes, retain spirit of nature - Healthy - Regulates humidity levels
- 5. Arch-itecture Arch is strongestshape in nature rotated arch forms a strong dome
- 6. Nepal Earthbag construction vs.standard constructions after the Nepal earthquake Nader Khalili’s Pegasus Childs orphanage
- 7. Haiti Building a newchurch after the earthquake in 2010
- 8.
- 9. Western World La CasaVergara - José Andrés Vallejo
- 10. Some terminology onbuilding with earth ‐ Adobe – sundried mudbricks ‐ Sandbags ‐ Earthbags – tamped clay composition ‐ Superadobe – friction and tensile resistance ‐ Hyperadobe – knitted fabric with open netting Adobe bricks Sandbags Earthbags Superadobe Hyperadobe bag
- 11. Plastic bags? ‐ Discardedpackaging bags ‐ Cloth / jutten bags ‐ Cal-Earth ‘ professional bags’ ‐ Cheaper polystyrene bags
- 12. Earth composition ‐ Mixsand, water and earth ‐ Sticky in your hand but no fingerprints ‐ Adding cement = stabalized bags Only single sand bags, +20 years old Stabalized sand tubes, cement added to sand
- 13. The Netherlands Insulation? ‐ Tworings of earthbag with cavity between them ‐ Insulate wall, for exp. With straw ‐ Different earth composition, for exp. glassfoam granulate High-rise? ‐ Adding 5 % aramide, keflar or coalfibre can create every strength ‐ Adding a compression ring halfway along the dome
- 14. How to doit yourself?
- 15. All you needis ‐ Earth ‐ Bags / tubes ‐ Shovel ‐ Buckets ‐ Stamper ‐ Hammer ‐ Spirit level ‐ Chain ‐ Stanley knife ‐ Either barbed wire or wooden pegs ‐ Measurer
- 16. Let’s start building! Anempty plot and a pile of earth Drawing the diameter of the dome
- 17. No design? ‐ Diametergives shape of dome ‐ Along the way adjustments to environment The ‘ design’ for our dome
- 18. First layer Use ofgravel instead of earth for strength Getting the perfect fold Stamping the entire cirkel
- 19. Moisture control Waterproof foilafter first layers Waterproof foil against outside, drainage pipe for rainwater
- 20. Layering! Placing a bag/tubeFilling it with earth Finish a circle Stamp the circle Twag the sides
- 21. Keep checking The spiritlevel across the circle The diameter of the dome The opening for the entrance
- 22. Earth bags vs.earth tubes Less folds, easier shaping, more even, possible on your ownComplicated shapes, easy adjusting
- 23. Barbed wire vs.wooden pegs After placing the bag, no adjustment possible Not frienly and not natural Faster, saver, easier, natural Making pegs can be a sore!
- 24.
- 25. Making the arch-entrance Lancetarch with temporary wooden support
- 26. Taking out thesupport
- 27. Making a window ‐Use sandbags / car tire / oil barrel / etc. ‐ No need for wood ‐ Fast and easy
- 28. Airducts using PVCpipes ‐ Fresh air ‐ Light ‐ Cheap, easy, fast ‐ Seasonally adjustable
- 29.
- 30. Making the topwindow A piece of glass from the dump, placed under a slight slope and supported by wooden pegs
- 31.
- 32. Covering an earth-bagdome ‐ UV-light breaks down the plastic bags ‐ Rain and dirt can enter ‐ Better indoor environment Dome needs: - A hat - A breathing coat - Good boots
- 33. Plastering ‐ Rough coblayer (mud mixed with sand) ‐ Clay plaster ‐ Cement ‐ Cow dung
- 34. Careful! A cob layerunder cement: nature will grow!
- 35.
- 36. Roof ‐ In veryrainy climates ‐ Wooden construction ‐ Straw ‐ Cement cloth ‐ Shingles ‐ Grass
- 37.
- 38. Pointed roof ‐ Arquitecturaen equilibrio ‐ Using earthbags as regular walls
- 39. Vaulted design An earth-bagdesign doesn’t need to look like a dome!
- 40. What we did Wefirst applied cob
- 42.
- 43. Finishing plaster A mixof sand, clay, water and wheat paste Make different mixes, test them for cracks Apply the mix on a test wall Make a large batch
- 45. Natural painting - Paintbased on clay - Mix clay, sand, pigment and wheat paste - Consistancy of quark - Pigments: colored clay, charcoal, dried flowers, spices
- 47. Earthbag building foreveryone and everywhere
- 48. References ‐ http://earthbagbuilding.com/index.htm info ‐http://earthhandsandhouses.org/ workshops/projects ‐ http://calearth.org/ info/workshops ‐ http://www.joseandresvallejoarquitecto.com/ ‘modern’ architecture ‐ http://www.matthiasroth.org/SpiritualMusic_IndianHarmonium/Nepal.html a friend building in Nepal ‐ http://earthbagbuilding.com/projects/uganda.htm Uganda project ‐ http://www.naturalbuildingblog.com/earthbag-projects-in-haiti/ rebuilding Haiti ‐ Documentaries by Nader Khalili ‐ Building with earth – Paulina Wojciechowska ‐ Earthbag building guide – Owen Geiger ‐ Google: earth-bag building! ‐ Ask me: ilonka@marselis.eu