Monday, September 23, 2013

Korai mats have multi purpose use and generate employment for rural population.


Process of mat production in SEVAI

Korai is a Natural Product, a sort of thick grass, grown locally for the purpose of manufacturing Mats. This grass has no side effects on the body of the Users. This grass belongs to the sedge family of plants, Cyperaceae. Korai is quite Natural, Eco friendly and biodegradable. Korai Mat gives coolness to human body.Korai mats may be broadly divided into three categories. Coarse mats are rough in texture, relatively quick to weave and may be made using either a handloom or power loom. Higher quality handloom mats are finer in texture. The highest quality has a texture akin to silk. Rough in texture Korai grass mats are spread over scaffolding before concrete roof laying for a shelter or any building to have a smooth finish under the laid roof of the building. Several people spend more material and manpower to plaster the space under the roof of a building if they do not have smooth area. By using the Mats, the under roof area looks smooth and significant number of builders leave with the mat finishing. Some builders till plaster the bottom of the roof after removing the mats, but they need not use more concrete items and labour and there is a saving of 50%, over head flooring expenses. A roof/intermediate floor is constructed to span between supports such as walls and columns. It is structurally designed to safely carry the ‘dead load’ of its own weight (including finishing layers above it) and any additional ‘live load’ imposed by human activity. Some builders use reinforced concrete slabs for the roof. The use RCC slab is a monolithic element which consists of cement concrete which encases within itself a matrix of steel rods called ‘reinforcement’. It uses the unique property of concrete to quickly harden into a rigid mass after being laid in different forms and thicknesses. However, concrete, which is most efficient in resisting compressive loads, is very poor in resisting tension which develops when it bends. So, the performance of concrete is further enhanced by placing reinforcement rods in the concrete which allows the concrete to resist the bending which would result in a thin RCC slab spanning between two supports.  RCC scan either be cast-in-situ by pouring concrete on shuttering or it can be pre-cast where smaller sized slab components are first made and then transported and installed at the site to create the floor/roof. The biggest advantage of RCC slab is that the basic raw materials needed for its construction – cement, sand, steel and aggregates – and skilled masons for casting the slab are easily available everywhere. However, because RCC has become such a commonly practiced technology, basic quality control guidelines for a good quality and durable RCC slab are often ignored in practice, especially in rural areas, where it has not been traditionally practiced. Now a days,in-situ roofing of RCC buildings, as cost effective and eco- friendly measures Kaorai mats are used as smooth surface maker of a RCC roof and for that Rough Korai mats are produced in SEVAI Taret villages such as in Amoor and its surrounding areas.Korai Mats are weaved with the help of Handlooms and Power looms. Handlooms are generally of a simple construction. Historically, handloom mat weaving has long been a low cost cottage industry and a complementary source of income for agricultural and other rural workers. Mostly women are involved in the process of Handloom Mat Weaving.Govin

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