Cover Image
close this bookWater and Sanitation Technologies: A Trainer's Manual (Peace Corps, 1985)
close this folderSessions
View the documentSession 1 - Water and sanitation issues in third world countries
View the documentSession 2 - Introduction to the training program
Open this folder and view contentsSession 3 - Facilitation skills
Open this folder and view contentsSession 4 - Community mobilization
Open this folder and view contentsSession 5 - Math review
Open this folder and view contentsSession 6 - Concrete and reinforcement
Open this folder and view contentsSession 7 - Project documentation
View the documentSession 8 - Field demonstration: Formwork and pouring concrete
Open this folder and view contentsSession 9 - Introduction to environmental sanitation
View the documentSession 10 - Non-formal health education
Open this folder and view contentsSession 11 - Community water supply case study
Open this folder and view contentsSession 12 - Project planning and management
View the documentSession 13 - Community needs and resource assessment
Open this folder and view contentsSession 14 - Communicable diseases and control
Open this folder and view contentsSession 15 - Excreta disposal systems
View the documentSession 16 - Health education presentations
View the documentSession 17 - Basic drawing and blueprint reading
View the documentSession 18 - Field demonstration: block laying
View the documentSession 19 - Project planning: Latrine construction
View the documentSession 20 - Latrine construction
Open this folder and view contentsSession 21 - Women and water
Open this folder and view contentsSession 22 - Hydrology
View the documentSession 23 - Water supply improvements
View the documentSession 24 - Pumps: Installation, operation, maintenance
View the documentSession 25 - Field demonstration: Pump assembly and disassembly
Open this folder and view contentsSession 26 - Field demonstration: Pipework and plumbing
Open this folder and view contentsSession 27 - Principles of hand-dug shallow wells
View the documentSession 28 - Well site inspection and feasibility survey
View the documentSession 29 - Project planning: Well rehabilitation
View the documentSession 30 - Shallow well rehabilitation
Open this folder and view contentsSession 31 - Gravity water systems: Part I
Open this folder and view contentsSession 32 - Survey and measurement
View the documentSession 33 - Field demonstration: Surveying
Open this folder and view contentsSession 34 - Gravity water systems: Part II
Open this folder and view contentsSession 35 - Principles of spring development
View the documentSession 36 - Spring site feasibility survey and flow measurement
View the documentSession 37 - Project planning: Spring development
View the documentSession 38 - Spring development construction
View the documentSession 39 - Ferrocement technology and construction
View the documentSession 40 - Project planning: Ferrocement water tank
View the documentSession 41 - Ferrocement water tank construction
View the documentSession 42 - Constructing projects in a community
Open this folder and view contentsSession 43 - Proposal writing
View the documentSession 44 - Training review and assessment

Session 17 - Basic drawing and blueprint reading

TOTAL TIME

Two Hours

OBJECTIVES

* Learn to represent objects by freehand sketching and dimensional drawing


* Practice reading and interpreting blueprints

RESOURCES

Rural Water and Sanitation Projects; USAID

PREPARED

Newsprint and felt-tip pens, flipchart reproduction of drawings

MATERIALS

in Step 3, mechanical pencils, rulers, protractors, and compasses for all trainees, several construction blueprints, and examples of dimensional drawing from Water For the World

FACILITATORS

Two or more trainers

Trainer Introduction

This session requires a good deal of preparation. It begins on an introductory level and all trainees should be equipped with a mechanical pencil, ruler, protractor, and compass. The room should be set up so that trainees have a desk or table in front of them. The drawings shown in Step 3 should be reproduced on newsprint prior to the session. If there are trainees in the group with drafting experience, they should be asked to co-facilitate the session and to assist less experienced trainees during steps five and six.

PROCEDURES

Step 1

5 minutes


Present the objectives and format for the session.

Step 2

10 minutes


Ask all trainees to draw, freehand, the following figures in three dimensions: square, rectangle, triangle, cylinder, and cone.

Trainer Note

Give the trainees the opportunity to draw the figures several times. They should compare their drawings among themselves.

Step 3

15 minutes


Using a flipchart reproduction of the figures below, briefly explain how to draw them precisely with the tools provided. Ask the trainees to draw the same set of figures using the drawing tools.


Figures

Trainer Note

By measuring side lengths and angles, the trainees should be able to draw the figures in a more precise manner. Give them the opportunity to draw these figures several times.

Step 4

15 minutes


Lecturette on dimensional drawing.

Trainer Note

Discuss the importance of accurate, easy-to-read drawings. Such drawings can be a valuable teaching tool, as well as the most important component of a project documentation.

Describe the differences between a plan view drawing, a profile drawing, a cut-away drawing, and an exploded view. There are helpful examples of each of these in Water For the World. Look through the technical notes dealing with design and construction, and point out examples to the trainees. If you have other examples, show them at this time.

Step 5

45 minutes


The trainees practice dimensional drawing.

Trainer Note

Give them an object to draw, such as a latrine slab, superstructure, or a water storage tank and base. They may refer to Water For the World for examples to follow.

Step 6

25 minutes


Divide the trainees into groups of three to four. Give each group some construction blueprints to read and interpret.

Trainer Note

Walk among the groups and answer any questions the trainees have.

Step 7

5 minutes


Review the objectives and conclude the session.