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Résumé :
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While there are many self-help well construction programmes being undertaken by governments, international agencies and non-governmental bodies, all over the world, there are not many manuals available which provide step-by-step guidance on the actual technique of well construction. This manual does so. It deals in detail with a particular method, the hand dug well, in which the shaft is of sufficient size to enable the diggers to descend as the work progresses down to the water level. The borehole method is not dealt with in this volume. The methods described in this book have been used traditionnaly in many parts of the world and the techniques are adapted to incorporate modern methods and materials. In the hand dug well, simple water lifting devices such as bucket and rope can be used and mechanical pumps which require constant maintenance are not necessary.
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