Cover Image
close this book Wells construction: hand dug and hand drilled
View the document Acknowledgments
View the document Introduction
close this folder Section one: Planning
close this folder Chapter 1: Introduction to wells planning
View the document A. Overview
View the document B. The need for adequate water supply
View the document C. Involving the local community
View the document D. Selecting the most appropriate water source
View the document E. Site choice
View the document F. Preventing water contamination
View the document G. Types of wells
View the document H. Well sections
View the document I. Materials
View the document J. Tools and equipment
View the document K. Sinking method
View the document L. Preparation for construction
View the document M. Planning
close this folder Section two: Hand dug wells
View the document Chapter 2: Introduction to hand-dug wells
View the document Chapter 3: Well design
View the document Chapter 4: Supplies
View the document Chapter 5: Lowering and raising workers and equipment
View the document Chapter 6: Digging
View the document Chapter 7: The middle section: overview of lining techniques
View the document Chapter 8: Construction of the middle section
View the document Chapter 9: Construction of the bottom section
close this folder Section three: Drilled wells
View the document Chapter 10: Introduction to drilled wells
View the document Chapter 11: Drilling and casing techniques
View the document Chapter 12: Construction: hand rotary and hand percussion methods
View the document Chapter 13: Construction: sludger method
View the document Chapter 14: Construction: driven and jetted
View the document Chapter 15: The bottom section
close this folder Appendices
View the document Appendix I: Conversion factors and tables
View the document Appendix II: Vegetation as an index of ground water
View the document Appendix III: Uses of dynamite in hand dug wells
View the document Appendix IV: Cement
View the document Appendix V: Leveling and plumbing the mold
View the document Appendix VI: Pipe
View the document Appendix VII: Pumps
View the document Appendix VIII: Water treatment in wells
View the document Appendix IX: Rope strength
View the document Glossary
View the document Annotated bibliography

L. Preparation for construction

Once you have decided how to sink the well and what materials to use, you need to organize and prepare for the construction.

1. Workers

It is best if local laborers perform as much of the work as they are capable of performing without spending too much time in training. This will allow them to better understand the well, its construction, and later maintenance needs.

With any laborers it should be very clearly established before construction begins who is expected to do what, how long is should take, and what quality the end product should be. Any later misunderstandings can be more easily cleared up if an initial understanding was agreed to by all parties.

Consider the following questions concerning the workers:

• What skills are required?

• Will the workers require training?

• If so, how much training?

• How many workers are needed?

• How long will their services be needed?

• Will they volunteer their work or will they be paid?

NOTE: While you can be of assistance, it is important to let the community set their own goals.

2. Materials

Before the construction begins, it is helpful to have at the well site as many of the tools, equipment, and supplies as you think will be necessary to complete the job. This prior organization will facilitate the day-to-day operation. If large quantities of supplies will need to be stored at the site (such as the sand and gravel for concrete) , the storage site should be decided on beforehand so as not to interfere with later work. If theft is a serious problem, workers may have to take turns guarding the construction site at night.