PROCEDURE OF PLOTTING
(Next post on
“Procedure of Field Work”)
1 1. A suitable scale is chosen so that
the area can be accommodated in the space available in the map.
2. A margin about 2 cm from the edge of
the sheet is drawn around the sheet.
3. The title block is prepared on the
right hand bottom corner.
4. The north line is marked on the
right hand top corner, and should preferably be vertical. When it is not
convenient to have a vertical north line, it may be inclined to accommodate the
whole area within the map.
5. A suitable position for base line is
selected on the sheet so that the whole area along with the objects it contains
can be drawn within the space available in the map.
6. The framework is completed with all
survey lines, check lines and tie lines. If there is some plotting error which
exceed the permissible limit, the incorrect lines should be resurveyed.
7. Until the framework is completed in
proper form, the offsets should not be plotted (Fig. 41).
8. The plotting of offsets should be
continued according to the sequence maintained in the field book.
9. The main stations, sub-stations,
chain line, objects, etc. should be shown as per standard symbols (discuss on
previous post).
10. The conventional symbols used in the map
should be shown on the
right hand side.
11.
The scale of the map is drawn below the heading or in some suitable
space. The heading
should be written on the top of the map.
12. Unnecessary lines, objects, etc. should
be erased.
13. The map should not contain any
dimensions.
Inking of the map: The inking of the map should be
started after the pencil work is completed in all respects. The colour (color)
conventions are shown in the previous post (Fig. 37, 38, 39 & 40).
The inking should be begin from the left hand
side towards the right hand side, and top towards the bottom.
No comments:
Post a Comment