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01 មករា 1980 This guide describes how to construct a transportable charcoal kiln. The kiln is made from sheet metal and can be built in a workshop by local craftsmen with a resaonable skill level. 20 pages, illustrations
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01 មករា 1981 A thorough, step-by-step book of basic carpentry projects and techniques that helps readers save money while improving their homes.Projects include everything from installing crown molding to hanging a door.Full-color illustrations show every project step so readers quickly grasp the...
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01 មករា 1990 The majority of farmers in the world still practise some form of subsistence farming. Their draught-animal and handwork-based farming practices, however, cannot be compared with the completely mechanised and highly automated precision-farming practices that are becoming the norm for many of their...
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01 មករា 1981 This prefabricated greenhouse can be added to the south side of an existing house for under $225.
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01 មករា 1965 Concrete is a strong and inexpensive construction material when it is properly prepared and used. This introduction explains the importance of a good mixture and describes the materials used in the mixture. Following this are entries on: Calculating amounts of materials for concrete Mixing...
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01 មករា 1990 Bridges are a part of the transportation system of a region. They are used to span an obstacle like a stream or chasm. Bridges make the system more efficient either by saving travel distance or by enabling vehicles or pedestrians to reach places that were previously inaccessible. There are four...
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01 មករា 1985 Every low-cost housing project seeks to build the most durable house at the lowest cost possible. Emphasis is always given to the maximum use of locally available materials, such as adobe. Common adobe, as it has been known for centuries, is simply a soil mixture with a clay content of at least...
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01 មករា 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...
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01 មករា 1980 Improved use of water as a power source has potential for much of the developing world. There are few places where water is not available in quantities sufficient for power generation. Almost any flowing water--river, brook, or outlet of a lake or pona--can be put to work and will provide a...
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01 មករា 1977 The text on the following pages provides data compiled by various investigators on the amount of energy available from S-rotors at various wind speeds. The author feels the potential rotor builder should use these data carefully to see if an S-rotor can meet his needs--before he begins the...
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