Practical Answers

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  Floating Gardens in Bangladesh

  A floating garden is built using aquatic weeds as a base on which vegetables can be grown.

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  Lime Production

  There is a long history of production and use of lime in Sri Lanka. Its main use has been as a cementing agent and as a decorative whitewash in the building industry.

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  Water Harvesting in Sudan

  In semi-arid zones such as North Darfur where the rainfall is concentrated over short periods of time, various approaches to balancing water demand with supply, such as rain water harvesting, are described in this brief.

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  Dead-Level Contours

  This brief describes the use of contours and shows how to construct the Manama in-field rainwater harvesting storage facility.

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  Methods for Testing Lime in the Field

  The acknowledged standard test for available lime is the ASTM Rapid Sugar Test, which uses relatively simple, portable laboratory glassware and common reagents.

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  Building Small-Scale Water Harvesting Dams

  North Darfur faces acute deficit in its water. The need for water has forced farmers to try and adapt their practices and conserve more water.

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  Alternatives to Portland Cement

  Cement is an important binding agent in concretes, mortars and renders, and is used for the production of walling blocks and roofing tiles.

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  Ventilated Improved Pit Latrine

  The Ventilated Improved Pit Latrine is an improvement on standard pit latrines that eliminates flies and odour.

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  Low Cost Incinerator Construction Notes

  Guide for the construction of a low cost incinerator

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  Low-Cost Waste Incinerator Overview

  The low-cost waste incinerator (LCI) is a cheap and basic structure which deals with domestic waste. It consists of an inner refractory incinerator surrounded by an outer protective wall made and is made from standard cement blocks, bricks and steel. These drawings give an overview of the various co...