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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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Presentation Transcript
slide2
DEPARTMENT of MECHANICAL ENGINEERING

TECHNICAL DRAWING COMPUTER AIDED

slide3
RAPIDOS

TECHNICAL DESIGN PROJEGT

ASSOC. PROF. DR. Cevat Erdem İMRAK

RESEARCH ASSISTANTS Recep DEMİRSÖZ

members
MEMBERS
  • ASENA KÖK

030020071

  • GONCA ERTEKİN

030030068

slide6
UMUT UYSAL

030030069

3 03 2004 wednesday
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

10 3 2004 wednesday
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.

slide10

* Advantages of chair

* Graphics about chair and desk height

* Dimensions of our design

* Sashaku

* Some formulas about chair

* Sitting Position

* Illness

chairs
CHAIRS

For centuries the folding chairs have not changed

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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 :

sitting position
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