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482 items found (Showing 391 - 400) |

  1. Understanding Small-Scale Brick Making

    01-01-1990 Sun-dried earthen blocks (adobe) have been used as a building material for thousands of years, especially in very dry areas. Clay is mixed with water, and sometimes straw to keep the finished blocks from cracking, and formed by hand into blocks. The blocks are placed in the sun until they are...
    Small Scale Bricks Brickmaking VITA Downloads

  2. Understanding Stabilized Earth Construction

    01-01-1984 Soil is one of the oldest building materials. It has been used for centuries in all parts of the world. Ancient temples, fortifications, and pyramids as well as part of the Great Wall of China were built with soil. The three traditional methods of soil construction are: adobe block or lumps built...
    Stabilized Earth Soil Health Construction VITA Downloads

  3. Stabilized Earth Construction

    01-01-1987 Soil is a universal building material and is one of the oldest known to humanity. Simple soils (without additives), or soils improved by adding stabilizing materials such as bitumen or cement, are suitable for homes, schools, roads, and other construction. For construction purposes, soil is...
    Stabilized Earth Construction Manuals VITA Downloads Soil Health

  4. Making Building Blocks with the CINVA-Ram Block Press

    01-01-1977 This manual combines the experience of four men who used the CINVA-Ram Block Press and figured out answers, bit by bit, to the inevitable problems of detail as they came up day after day. That was the hard way to learn how to use the press; this handbook is intended to make it easier.
    Construction CINVA-Ram Block Press VITA Downloads

  5. Understanding Ferrocement Construction

    01-01-1988 Ferrocement is a building material composed of a relatively thin layer of concrete, covering such reinforcing material as steel wire mesh. Because the building techniques are simple enough to be done by unskilled labor, ferrocement is an attractive construction method in areas where labor costs...
    Ferrocement Design & Construction Construction VITA Downloads

  6. 1-Kw RIVER GENERATOR

    01-01-1980 The plan presented here is a detailed description of a 1-kilowatt (1-kW) generator unit, which was prepared in 1971. The plan is scheduled to be revised and updated in the near future in order to incorporate additional data. At the time, this plan was prepared, the generator had not been built on...
    Hydropower Water Power River Power Generator VITA Downloads

  7. Small Michell (Banki) Turbine

    01-01-1980 The Michell or Banki turbine is a relatively easy to build and highly efficient means of harnessing a small stream to provide enough power to generate electricity or drive different types of mechanical devices. The turbine consists of two main parts - the runner, or wheel, and the nozzle. Curved...
    Construction Manual Power Resources Hydraulic Turbines Turbine VITA Downloads

  8. Understanding Hydropower

    01-01-1984 Once it is understood that gravity and water can be harnessed to produce energy, a study of methods to extract this energy efficiently can be undertaken. The purpose of this paper is to discuss several such methods in general terms. The paper provides a basic introduction to the science of water...
    Hydropower Water Power VITA Downloads Energy sources Energy Conservation Gravity-Fed Water WH

  9. Understanding Mini-Hydroelectric Generation

    01-01-1985 Electricity can be generated from the power of flowing water. This is called hydroelectric generation, and it can be done anywhere that there is water and a hill or drop for it to run down--in an irrigation canal, where a river runs through rapids or over a waterfall, or where a dam has backed up...
    Hydropower Water Power Water VITA Downloads

  10. Understanding Micro-Hydroelectric Generation

    01-01-1985 The power of flowing water can be used to generate electricity, or to do other kinds of useful work. Generating electricity in this way is called hydroelectric generation. It can be done anywhere that there is water and a hill or drop for it to run down, such as a drop in an irrigation canal, a...
    Micro-Hydroelectric Hydropower Water Power Water VITA Downloads