slide1 n.
Download
Skip this Video
Loading SlideShow in 5 Seconds..
University of Palestine College of Engineering & Urban Planning First Level PowerPoint Presentation
Download Presentation
University of Palestine College of Engineering & Urban Planning First Level

Loading in 2 Seconds...

play fullscreen
1 / 26

University of Palestine College of Engineering & Urban Planning First Level - PowerPoint PPT Presentation


  • 109 Views
  • Uploaded on

University of Palestine College of Engineering & Urban Planning First Level. Engineering Drawing Lecture 9 Orthographic Writing. Lecturer: Eng. Eman Al.Swaity Eng.Heba hamad. Views selection. Basic dimensioning. Exercises. TOPICS. View Selection. VIEW SELECTION STEPS.

loader
I am the owner, or an agent authorized to act on behalf of the owner, of the copyrighted work described.
capcha
Download Presentation

University of Palestine College of Engineering & Urban Planning First Level


An Image/Link below is provided (as is) to download presentation

Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author.While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server.


- - - - - - - - - - - - - - - - - - - - - - - - - - E N D - - - - - - - - - - - - - - - - - - - - - - - - - -
    Presentation Transcript
    1. University of Palestine College of Engineering & Urban Planning First Level Engineering Drawing Lecture 9 Orthographic Writing Lecturer: Eng. Eman Al.Swaity Eng.Heba hamad

    2. Views selection Basic dimensioning Exercises TOPICS

    3. View Selection

    4. VIEW SELECTION STEPS 1. Orient the object to the best positionrelative to a glass box. 2. Select the front view. 3. Select adjacent views.

    5. The object should be placed in its natural position. The object should presents its features in actualsize and shape in orthographic views. STEP 1 : Orient the Object GOOD NO !

    6. The object’s longest dimension should be presented as a width. STEP 2 : Select a Front View First choice Second choice Waste more space GOOD Inappropriate

    7. The adjacent views that are projected from the selected front view should appear in its natural position. STEP 2 : Select a Front View Inappropriate

    8. Choose the view that have the fewest number ofhidden lines. STEP 2 : Select a Front View GOOD Inappropriate

    9. Choose the view that have the fewest number ofhidden lines. STEP 3 : Select an Adjacent View GOOD Inappropriate GOOD Inappropriate

    10. Choose the minimum number of views that can represent the major features of the object. STEP 3 : Select an Adjacent View Difficult to interprete. Necessary Necessary Hole’s location can be specified on the same view. Easy to understand

    11. Choose the views that are suitable to a drawingspace. STEP 3 : Select an Adjacent View POOR Not enough space for dimensioning.

    12. Choose the views that are suitable to a drawingspace. STEP 3 : Select an Adjacent View GOOD

    13. D W H D W H Example: View selection F.V. mislead to… Three views F.V. & T.V. F.V. & R.S.V.    Size description    Shape description

    14. Flat part having a uniform thickness. ONE-VIEW DRAWING 1 Thick These 2 views provide only informationabout the part thickness ! Unnecessary

    15. Cylindrical-shaped part. ONE-VIEW DRAWING Unnecessary Repeat ! Infer from CL Unnecessary

    16. There exists an identical view. TWO-VIEW DRAWING Repeat ! Unnecessary

    17. The 3rd view has no significant contours of the object. TWO-VIEW DRAWING Unnecessary

    18. The 3rd view has no significant contours of the object. TWO-VIEW DRAWING Unnecessary

    19. Basic Dimensioning

    20. COMPONENTS 1. Extension lines 27 10 10 Drill, 2 Holes R16 2. Dimension lines 3. Leader lines 4. Dimension numbers 17 5. Local notes 43

    21. Exercises

    22. Front View EXAMPLE A

    23. EXAMPLE B Front View

    24. EXAMPLE C Front View

    25. Front View EXAMPLE D

    26. End of The Lecture Orthographic Writing