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close this book Water purification, distribution and sewage disposal for Peace Corps volunteers
close this folder Section 4: Characteristics of an adequate system
View the document Overview:
View the document Essential components of an adequate system
View the document General requirements for an adequate system
View the document Relationship of distribution system to community
View the document Headloss and distribution systems
View the document Lesson plans

Lesson plans

CHARACTERISTICS OF AN ADEQUATE SYSTEM

LESSON NO. 1

LESSON OBJECTIVE: To outline the general requirements for a system to be qualified as adequate.

TOPIC

INSTRUCTIONAL PROCEDURE

SUPPLEMENTAL MATERIALS/RELATED READING

Definiti of an Adequate System

Discuss in class and draw out a definition of "an adequate system".

Section 3

Component Parts:

Demonstrate how to dray the map and profile of a system.

Map of a Village

Section 1

Relative Locations

As an exercise let each student dray the profile from a sample map.

Drawing boards.

(a)

Source and Pumping Facilities

Discuss the requirements for quality and quantity of water at source.

Section 1

 

Discuss the relationship between type of source and type of pump to be used.

Section 3 on Pump Selection.

 

Draw safety provisions required.

 

(b)

Treatment Plant

Discuss the need for water treatment.

Section 2 on War Treatment.

 

Visit a treatment plant and note the relative location of treatment stages.

 
 

Compare safety requirements to that at source.

 

(c)

Storage

Discuss the need for storage facilities and how the storage capacity is related to the size and the community.

WHO Monograph Series

Chapter 4

 

Discuss the various storage system and the effect of location on them.

 
 

Ask students to outline what particular attention be paid to maintaining the quality of the water.

 

 

CHARACTERISTlCS OF AN ADEQUATE SYSTEM

LESSON NO. 2

LESSON OBJECTIVE: To determine the relationship between the distribution system and headloss in the system; and design a distribution system suited to a given community.

TOPIC

INSTRUCTIONAL PROCEDURE

SUPPLEMENTAL MATERIALS/ RELATED READING

Definition of Headloss

Define trend and headloss.

Water in tank

Measuring, Scale.

 

Demonstrate how to measure head.

Show how to calculate headloss.

Chart of Headloss vs. Pipe Size. Taoles of equivalent pipe lengths and valves and fitting.

Relationship Between Headloss On the Distribution Pipe.

Demonstrate the effect of valves and threaded fittings on the water flow in a

Elevated water source; long and short pipes, valves and joints.

 

Show how the above loss may be compensated for in the plan.

 

Relationship Between the Community Layout and the Distribution System

Lecture on how to design a distribution system to fit a given community.