Week 2-lines in blueprint drawings .pptx

lines in blueprint

1. SHEET SIZES A0 841 × 1189 A1 594 × 841 A2 420 × 594 A3 297 × 420 A4 210 × 297

2. Solid (Visible) Line Center Line Dimension Line Phantom Line Cutting Plane Line Long Break Line TYPES OF LINES Hidden Line Extension Line Leader Line Viewing Plane Line Section Line Short Break Line Chain Line

3. SOLID LINE Shows the edges of the object that are visible DEFINITION: EXAMPLE :

4. HIDDEN LINE Shows the edges of the object that are NOT visible DEFINITION: EXAMPLE:

5. CENTER LINE Locates the centers of holes, arcs and other symmetrical objects DEFINITION: EXAMPLE:

6. CENTER LINE

7. EXTENSION LINE Extends from the object in the view to give location points for dimensioning DEFINITION: EXAMPLE:

8. DIMENSION LINE Shows the extent of the dimension DEFINITION: EXAMPLE:

9. GENERAL NOTES:  100  70  = DIAMETER R = RADIUS (  

10. GENERAL NOTES:

11. LEADER LINE Used to call out an area of the drawing DEFINITION: EXAMPLE: An arrow is used when termination is on the outline A dot is used when termination is within the outline

12. PHANTOM LINE These lines are used to show alternate positions, adjacent parts or repeated detail DEFINITION: EXAMPLE:

13. VIEWING PLANE LINE Indicates a viewpoint along a specific plane DEFINITION:

14. VIEWING PLANE LINE EXAMPLE :

15. CUTTING PLANE LINE Shows the location and viewing direction of a plane that cuts through an object DEFINITION: Viewing direction Viewing direction Viewing direction

16. CUTTING PLANE LINE EXAMPLE: Cutting plane Cutting plane line Section lines Shows the location and viewing direction of a plane that cuts through an object DEFINITION:

17. SECTION LINE Indicates the cut area in a section views of an object. DEFINITION: EXAMPLE:

18. SECTION LINE Shows the location and viewing direction of a plane that cuts through an object DEFINITION: EXAMPLE: Section lines

19. The section lines are different for each of material ’ s type. Cast iron, Malleable iron Steel Concrete Sand Wood For practical purpose, the cast iron symbol is used most often for any materials. SECTION LINE

20. COMMON MISTAKE SECTION LINE

21. It should not be drawn parallel or perpendicular to contour of the view. COMMON MISTAKE SECTION LINE

22. LONG BREAK LINE Shorten a view in an area where there is no change in the composition of an object DEFINITION: EXAMPLE:

23. SHORT BREAK LINE EXAMPLE:

24. CHAIN LINE

25. SOLID LINE HIDDEN LINE LONG BREAK LINE LEADER LINE DIMENSION LINE EXTENSION LINE CUTTING PLANE LINE SECTION LINE CENTER LINE