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İSTANBUL TECNICAL UNIVERSITY

İSTANBUL TECNICAL UNIVERSITY. DEPARTMENT of MECHANICAL ENGINEERING TECHNICAL DRAWING COMPUTER AIDED. RAPIDOS TECHNICAL DESIGN PROJEGT ASSOC. PROF. DR. Cevat Erdem İMRAK RESEARCH ASSISTANTS Recep DEMİRSÖZ. MEMBERS. ASENA KÖK 030020071 GONCA ERTEKİN 030030068. SELAHATTİN DOĞRAMACI

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İSTANBUL TECNICAL UNIVERSITY

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  1. İSTANBUL TECNICAL UNIVERSITY

  2. DEPARTMENT of MECHANICAL ENGINEERING TECHNICAL DRAWING COMPUTER AIDED

  3. RAPIDOS TECHNICAL DESIGN PROJEGT ASSOC. PROF. DR. Cevat Erdem İMRAK RESEARCH ASSISTANTS Recep DEMİRSÖZ

  4. MEMBERS • ASENA KÖK 030020071 • GONCA ERTEKİN 030030068

  5. SELAHATTİN DOĞRAMACI 030020077

  6. UMUT UYSAL 030030069

  7. SALİH EMRAH TURAN 030030100

  8. 3.03.2004 Wednesday We visited the library and studied problem number ten on page 96 of the book “Engineering design Graphics” for the computer aided technical drawing course design homework

  9. 10.3.2004 Wednesday We exchanged our ideas and knowledges on the homework and we discussed what we can do about it. We examine the research done on this topic.We split the work in the parts and decided what everyone is going to be working on.

  10. * Advantages of chair * Graphics about chair and desk height * Dimensions of our design * Sashaku * Some formulas about chair * Sitting Position * Illness

  11. CHAIRS For centuries the folding chairs have not changed

  12. Advantages of Folding Chair

  13. Consumer Wish

  14. Dimensions of our Design

  15. Sashaku

  16. Some Formulas about Chair seat pan height = poplitedheight – 2.5cm + cushion height + height of heel Where 2.5cm is introduced, based on the assumption that the seat pan height should be slightly lower than popliteal height to prevent impacting the thighs. seat pan height = work surface height – sashaku + cushion height + height of shoe heel When the work surface height is fixed , te seat pan height can be determined by subtracting sashaku from the work surface height VDT sashaku = sitting eye height – height to display screen centre – l–sinb Where l is the viewing distance and b is the viewing angle the two submodel are connected by VDT sashaku from the relationship between the VDT screen centre height and sitting eye height. When the opperator faces the display screen, the centre of the display screen should correspond to the natural viewing angle of the operator. VDT sashaku in this case represents :

  17. Sitting Position Reading/writing position Use front half of the seat Both feet on the floor Desktop sloping Resting position Move backwards on the seat Use the lumbar support Feet on footrest

  18. The Shape of the Disc, When the Wrong Sitting

  19. Illness ( Waist Hernia )

  20. Technical Drawing of our Design

  21. Thanks for listening…

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