ii
This lecture note is devoted to provide general aspects of
graphic communication like geometric construction,
orthographic projections, maps etc particularly for
environmental sanitation works such as dry pit latrine
construction, drainage or sewerage construction etc. Each
chapter begins by specifying learning objectives. The text and
the self-explanatory drawings are much helpful to understand
the subject even for the beginners. More over, other
subsidiary topics like sectioning, projection of points and lines
are added to enable students acquire concrete knowledge
and skill for their professional career. Finally, it contains a
glossary, which summarizes important terminologies used in
the text. For further reading, students are encouraged to refer
books which are listed in the bibliography section.