1. PORTABLE DESK EXTENDER GE105:Introduction to engineering design Mohammed Alamoudi Abdulmohsin Aldukhail Abdulaziz Alsubaie Abdullah Alotaibi Mohammed Alomi Mohammed Alswainee PRESENT BY 432100784 432104095 432100614 432104454 432100675 432107149 Supervisor: Prof. M.E.E.Abashar 1 Section:29779,Group1

2.  PROBLEM STATEMENT There is a lot of people in Saudi Arabia are facing problems dealing with ordinary desks “old or small desk”. So it is required to design an extender. 2

3.  INTRODUCTION The Portable Classroom Desk Extender is a horizontal, flat surface object that is use to give users more working space on a typical classroom desk, whether its to increase length on the right or left side. It is lightweight, easy to carry and use and a functional product that is made of thermoplastic or wood which comes in various colors and also with a carrying bag for transporting 3

4.  NEED ANALYSIS  Does not occupy large space.  It should be lightweight.  Its cost should be reasonable.  High quality.  Easy to carry “portable”. 4

5.  NEED ANALYSIS  It must have a small space to store notes and papers.  Included with a one year warranty.  The extender design should be simple and easy to use.  It should be safe and reliable. 5

6.  OBJECTIVES  Primary objective: To design a portable desk extender.  Secondary objectives: - Portable and easy to carry. - Easy to use. - Comfortable. - Low cost. 6

7.  OBJECTIVES TREE 7 Primary To design a portable desk extender Comfortable Low cost Easy to use Portable and easy to carry Secondary

8.  CONSTRAINTS  The price should be less than 150 SR.  Weight does not exceed 19.6 N ( 2 kg).  The width should be less than 35 cm.  The length should be less than 50 cm. 8

9.  CRITERIA  Portable.  Safe.  Low cost.  Reliable (1 year warranty).  Has storage space for notes and papers.  Easy to carry.  Adapted to wide variety of chairs. 9

10.  PROBLEM DEFINITION Design a portable desk extender because people are facing problems dealing with ordinary desks. It doesn't need to occupy large space, safe and reliable, easy to carry and must be made with high quality materials. The price should be less than 150 SR, weight doesn't exceed 2Kg (19.6N) and the maximum of dimensions must be less than (35cm*50cm). Also it may have a one year warranty and can be adapted to wide variety of chairs. 10

11.  literature 11 (1) (2) (3)

12.  Morphological analysis Option 5Option 4 Option 3Option 2Option 1FEATURES AluminumFiberPlasticSteelWood Material Several colorssilverwhiteblackWood color color Laying downSittingBody position Mug circular handler Pencil spaceSpace to store notes and papers extra squarerectangularcircular shape 12

13.  Morphological analysis Design (1) : Wood, Wood color, Laying down Pencil space, square. Design (2) : Plastic, Several colors, Sitting, Space to store notes and papers, Mug circular handler, rectangular. Design (3) : Steel, silver, Sitting, Mug circular handler, circular. 13

14.  Morphological analysis score23453rate Design (1) 33020304015090total score45444rate Design (2) 410805040120 total score34535rate Design (3) 39060405090150total 14 The best design is design (2) criteria durabilitycomfortablestabilitycostsafetyweights 2010 30 * The rate is out of 5, 1 as worst and 5 as best.

15.  Human Factors  Anthropometric Factors (Dimension): Width: 35 cm Length: 50cm Thickness: 2 cm  Ergonomic Factors: It should be made of safety material doesn’t cause any health problem. We have make it easy to carry to make him comfortable while using it.  Physiological Factors: The Extender surface should have a soft touch.  Psychological Factors : Color of the product may have a positive affect on the consumer. 15

16.  Simulation (measures in cm) 16 Mug circular handler Plastic Portable Hangers Papers Storage

17.  SURVEY RESULTS (4) 17

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23.  Conclusions We choose a design depending on the advantages for all people. The chosen design is easy to use, comfortable, safe, marketable, and cheap. This desk will serve a large portion of people who need writing and reading everywhere, some people spend three to four hours daily in Library, airport or university to reading and writing. 23

24.  References 24 (1) http://www.hope.edu/academic/engineering/engs451/2006/h arrison.htm http://www.hope.edu/academic/engineering/engs451/2006/h arrison.htm (2) http://www.ergonomique.nl/en/ergocorner-enhttp://www.ergonomique.nl/en/ergocorner-en (3) http://assistivetech.net/search/productDisplay.php?product_id =3341 http://assistivetech.net/search/productDisplay.php?product_id =3341 (4) https://docs.google.com/forms/d/10g9Nuxc3AiQinmSk0EFLf5x yIGC0MipvlTMoBZsuGBM/viewform https://docs.google.com/forms/d/10g9Nuxc3AiQinmSk0EFLf5x yIGC0MipvlTMoBZsuGBM/viewform