Essay on Cob - A Natural Alternative
According to the article, Cob - A Natural Alternative (Anderson, 2009), cob is a natural material that has constructed houses in many countries for hundreds of years. Cob homes are still standing today. Cob building is an inexpensive and Earth friendly. Cob building uses a simple mixture of clay, sand and straw fiber to create a durable structure. It is a well-known worldwide. In the United States, cob has replaced timber to create houses. People want to find the natural materials used, and therefore, people are interested in the cob. Soil and sand are basics of green material. It is normally mingled by foot or animals. A blender of straw fiber can flexible and tough to set them to stick together.
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2.2 Benefits of healthy living
Cheung (2010) wrote that cob does not use chemical substances in the production. Soil is not abandoning pollution into the atmosphere and it makes the atmosphere pure. The manufacture of negative ions form soil can help to remove electromagnetic effect so it can help to clear the nature wall and it will not attract dirt. All of advantages of soil can cause people to enjoy living with natural materials. People can decorate the nature walls by making color clay and it make from color sand with mother of pearl or straw that it is enduring and beautiful. Cob buildings prefer soil paint replace using normal coloring. Cob buildings can be suck steam and emits. When the atmospheres become dry, the temperature would change for season. Cheung (2010) said:
Recent research shows that good internal relative humidity (RH) control benefits the health of the people living inside. Clay materials in our home minimize condensation. Lower RH thereby deters fungal growth such as mildew which is a major health risk associated with allergies. In addition, maintaining lower RH would also help in limiting the growth and proliferation of house dust mites – an asthmatic irritant (ibid).
3. Cob house protect natural disasters
Dea Tech Research Inc (2008) wrote, many buildings system cannot prevent temblor, but