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**Earthbag Construction Technique**:
– Earthbag is a natural building technique using sturdy sacks filled with organic material.
– Walls are constructed in courses, forming curved or straight structures with strengths comparable to reinforced adobe.
– Developed from military bunker and flood-control dike methods, utilizing moist subsoil or water-resistant gravel for stability.
– Walls can be curved, straight, domed, or topped with conventional roofs, requiring bracing for walls longer than 5m.
– Finished with plaster for water shedding, UV protection, and overall structural integrity.

**Key Figures and Contributors**:
– Notable figures like Paulina Wojciechowska, Kelly Hart, Kaki Hunter, Doni Kiffmeyer, Owen Geiger, and Patti Stouter have contributed significantly to earthbag construction.
– Proponents such as Akio Inoue, Scott Howard, Gernot Minke, Nader Khalili, Dr. John Anderton, Fernando Pacheco, and Engineer Nabil Taha have tested and advanced earthbag building techniques.
– Their contributions range from developing comprehensive resources to pioneering seismic-resistant reinforcement methods for earthbag buildings.

**Construction Method and Foundation**:
– Earthbag construction typically starts with digging a trench and creating a rubble trench foundation.
– Bags filled with material are offset, tamped for stability, and reinforced with barbed wire to prevent slippage.
– Can be built on reinforced concrete footings, grade beams, or concrete slabs, with options for bermed or underground floating foundations like an earthship.

**Container Types and Bag-fill Materials**:
– Solid-weave polypropylene bags are commonly used for earthbag construction, offering low cost, water resistance, and insect resistance.
– Tubes made of crocheted poly fibers or woven mesh can also be used, along with organic materials like hemp or burlap.
– Bag-fill materials can range from inorganic materials to organic options like rice hulls, with stabilization using cement, lime, or bitumen for enhanced properties.

**Reinforcement, Structural Performance, and Finishing**:
– Different types of contained earth (CE, CS, CG, Modular CE) require specific fill materials and reinforcement techniques.
– Earthbag walls may need special reinforcement for higher forces, with considerations for structural integrity and resistance to collapse.
– Roofs, windows, doors, and finishing techniques like plastering and waterproofing play crucial roles in the overall durability and sustainability of earthbag structures.