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  • Extensive research and development works have been taken place at various research centres to use local materials, waste materials and prefabricated structural components to reduce the cost of construction.

    Some of the improved cost effective technology are listed below:

    1. Foundation: Under reamed piles for foundations have been developed for housing in black cotton soil area.

    2. Damp Proof Courses: Use of polythene, bituminous materials and cement mortar with water proofing agents have been suggested for damp proof courses.

    3. Walls: Fly ash bricks, precast hollow concrete blocks (without plaster), brick panels and precast wall panels may be used to get reasonably good comfort with little cost.

    4. Doors and Windows: Precast R.C.C. frames can save 25 to 30 per cent cost when composed with wooden frames. Instead of wooden shutters particle board shutters may be used.

    5. Lintels and Chejja: Locally available stones and slates can serve as lintels and chejja.

    6. Precast Structural Elements: In mass constructions works precast members may be used for columns, beams, reapers and stair cases. One can think of using wall panels also.

    7. Roof Units: A.C. sheets, cement bonded fibre sheets, paper corrugated sheets, lime and fly ash cellular slabs, solid planks, slates, ferrocement roof units etc. may be used for low cost housing roofs.

    8. Flooring: Low cost housing flooring may be with soil cement base, thin clay tiles, bricks on edges or with flagstones.

    If group housing is taken up automatically there is cost reduction, since mobilization of men, material cost is reduced and continuity of labour work is maintained.

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  • The following steps are required to solve accute shortage of reasonable low cost houses:

    1. Development of Sites: Government and government agencies should identify suitable sites for developing sites for low cost houses. The sites should be provided with water supply, sanitation, roads, street lighting and public transport facility. The area should be provided with shopping, education and health services to suit socio-economical, cultural and environmental conditions.

    2. Financial Assistance: Poor people should be given financial assistance in the form of grant and cheap loan to build the low cost houses.

    3. Construct Model Low Cost Houses: Few model low cost houses should be built to show the technology of building low cost houses.

    4. Self Help Schemes: Low income people are capable of helping themselves in building shelter at acceptable cost. Self help housing programmes consists of motivating the beneficiaries, extending technical know how and skilled worker required for some works.

    5. Skeleton Housing: Technical know how for building skeleton of housing should be made known to beneficiary. They should be allowed to make certain changes and improvements in final finishing to suit their financial position and taste.

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  • It is obvious that cost of construction is directly proportional to the area covered. In low cost housing economy in the construction is a vital factor, but one should not lose sight of the fact that any economies effected are not worth, if the minimum requirements of basic physical comfort in the dwellings are not met. In order to meet these twin requirements of economy and comfort, one has to depend to the maximum extent on the cost effective construction technology to provide minimum standard accommodation. On the recommendations of the planning commission, the Government of India has adopted the following minimum standards:

    1. A living room 11.1 m2
    2. A varandah and kitchen 6.5 m2
    3. A bathroom 1.3 m2
    4. A Lavatory 1.1 m2
    TOTAL: 20.0 m2
    Figure 10.1 shows typical plans for low cost passing.

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