Read and interpret diagrams, layouts and plans (ALPHABET OF LINES).pptx

TLE 7 - housekeeping

1. Read and interpret diagrams, layouts and plans

2. Alphabet of lines are also known as “line symbol”

3. LINES are the critical component of sketching. Lines have different types, thickness and shape has its own meaning.

4. drawing is made up of different lines. Each line represents something.

5. Different kinds of lines

6. Visible line it is thick line that represents the visible edges or outline of the object; also known as the object line.

7. HIDDEN LINE i t is a medium thick line composed of short dashes about 2-3 millimeters long with space between dashes about 1-2 millimeters wide; it represents the surface or edges that cannot be seen.

8. CENTER LINE i t is a thin line consisting of two long dashes and short dash drawn alternately with a gap of at least 2 millimeters in between; it represents the axis or center of symmetrical shapes like a ball, washer, rectangular block, cube.

9. SECTION LINE i t is a thin line to show the surface that has been cut; they are spaced evenly at 45 degrees with the horizontal to make shaded effect.

10. EXTENSION LINE i t is a thin line that extends from the object in order to show dimension limits.

11. DIMENSION LINE i t is a thin line with an arrowhead in one end used to indicate the measurements of the object.

12. LONG-BREAK LINE It is a medium thick line consisting of broken and straight lines drawn alternately. This is also known as the limiting line. This limits the length of an elongated object without changing the size of its view.

13. SHORT-BREAK LINE i t is a thick line drawn in freehand to show details that a part has been cut off or broken out.

14. LEADER LINE i t is a short inclined thin line with an arrowhead at the end and short horizontal line on the other end.

15. PHANTOM LINE i t is a thin line that shows position(s) of part of an object that moves drawn by two short dashes and one long dash.

16. CUTTING-PLANE LINE t hese are thick lines used to indicate an imaginary cut through an object along the line. Made up of two long dashes broken in one end with an arrowhead and two short dashes drawn in between the long dashes.

17. Architectural symbols