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close this bookAppropriate Community Technology - A Training Manual (Peace Corps; 1982; 685 pages)
View the documentThe Farallones Institute Rural Center
View the documentCHP International, INC.
View the documentPreface
View the documentAcknowledgments
View the documentIntroduction
Open this folder and view contentsPhase I: Introduction to training
Open this folder and view contentsPhase II: Earthen construction and fuel-saving cookstoves
close this folderPhase III: Pedal/treadle power
View the documentPhase III Calendar
View the documentSession 1. Maternal and child health: part 1
View the documentSession 2. The path of the sun
View the documentSession 3. Introduction to pedal/treadle power
View the documentSession 4. Design considerations for pedal/treadle power
View the documentSession 5. Classical mechanics: principles of pedal/treadle power
View the documentSession 6. Use of appropriate aids to communication
View the documentSession 7. Maternal and child health: part 2
View the documentSession 8. Part one: familiarization with materials and tools
View the documentSession 8. Part two: familiarization with the bicycle
View the documentSession 9. Introduction to design considerations
View the documentSession 10. Presentation of designs
View the documentSession 11. Construction of pedal/treadle-powered devices
View the documentSession 12. Blacksmithing and metalwork
View the documentSession 13. Appropriate technologies for health
View the documentSession 14. Case studies in community health
View the documentSession 15. Preparation for pedal/treadle presentations* *
View the documentSession 16. Heat transfer
View the documentSession 17. The role of the volunteer in development: international development part 1: the green revolution: successes and failures
View the documentSession 18. Presentation of pedal/treadle-power devices
View the documentSession 19. Volunteers in development part one. women in development
View the documentSession 20. Mid-program evaluation part one : program evaluation
Open this folder and view contentsPhase IV: Solar water heaters
Open this folder and view contentsPhase V: Solar agricultural dryers
Open this folder and view contentsPhase VI: Concluding the program: The energy fair
Open this folder and view contentsAppendices

Session 4. Design considerations for pedal/treadle power


2 hours


* To list and discuss criteria for the selection of a technology* To identify and discuss technical and cultural factors to be considered when designing an appropriate pedal/treadle device


Attachment II-5-B, "Criteria for the Selection of Technology"


Chalkboard or newsprint and felt-tip pens


Step 1. (5 minutes)
Have the participants name two or three common manufactured items that they might choose for use in their everyday lives.

Trainer Notes

These items could be just about anything: an automobile, a pair of shoes, a tool, etc.

Step 2. (20 minutes)
Brainstorm a list of the technical and cultural criteria that one might use in choosing each item.

Trainer Notes

In the case of an automobile, for example, the criteria list might be:


Technological Criteria

Cultural Criteria



Ease of repair




Step 3. (20 minutes)
Have participants examine the criteria lists and suggest any changes, additions or deletions which would be necessary when considering the design of pedal/treadle devices.

Trainer Notes

Explain that essentially the lists would remain the same.

Step 4. (60 minutes)
Distribute Attachment II-5-B and discuss the implications which arise when the issue of "appropriateness" is introduced as a selection criteria.

Trainer Notes

Encourage the participants to compare and contrast the criteria identified earlier in the session with the criteria outlined in the attachment.

Step 5. (15 minutes)
Conclude and summarize the session by reviewing and discussing the objectives.

Trainer Notes

* As a summary point, explain that along with the technical appropriateness of a technology, various socio-cuttural issues play an essential role as selection and design considerations.

* Explain that this basic point should provide the context for decisions made during the design and construction component of this phase.

* The next session requires that three participants volunteer to do presentations of mechanical principles. Take time to select these volunteers now. Explain to them the procedures for the next session (See Session 5 for details, procedures and attachments).

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