RESULTS AND DISCUSSION Project Portable Chair GE 105 (Introduction to Engineering Design) Section: 35539 BY: Group 5 SUPERVISOR: Dr. Mohanad El Harbawi A chair is a piece of furniture with a raised surface used to sit on. The Chairs are most often supported by four legs and have a back. There are many kinds of a chair that are completely different in their shape, size, color, and also what it is has made of. we all need to be comfortable, especially when we walk or stand up for a long time or when we are in the school or when we are in the markets or even at home, so chairs are important for our daily life. There are a lot of chairs in the markets, different shapes and types. However, these types have some weaknesses regarding the design. The first problem is that the chairs in the markets are fixed (not portable), and cannot be moved easily. The second problem is the weight of the chairs in the markets are very heavy, especially for the old people to carry them ever they want The third problem is the cost of the chairs in the markets are expensive. Primary Objective : Design a portable chair to be easy to carry and move it anywhere, especially for the old people and for special needs, so they can carry the chair anywhere they want.   Secondary Objectives : The chair will be easy to use, not heavy, nice shape, will be design as a bag, marketable, portable, low cost and easy to make. 1 INTRODUCTION 2 PROBLEM STATEMENT 3 OBJECTIVES Portable. Easy to carry and use. Low weight. Cheap. Simplicity. Made from wood and aluminum. Design a portable chair. Easy to carry and move it anywhere. Should be carried as a handbag. Should be easy for old people. Weight must be less than 3 kg. Cost must not exceed 100 SR. Must be safe. Applied weight should be less than 90 Kg. 4 Criteria 5 6 Need Analysis METHODOLOGY Start Conceptual Design Problem Identification Search for Information Preliminary Design Design the chair to be carried as a handbag. Size: length: 47 cm, width: 35 cm, height: 43 cm. Weight not exceed 3 kg. Cost not exceed SR 100 SR. 3 years lifetime. 7 Constraints Final Design More Information Needed? Yes Build and Test No Forming Ideas Product Acceptable? No Search for Alternative Proposals 9 Yes Sketch & Picture Evaluate Proposals Delivery of Product Any Proposal Feasible? End No Yes 8 RESULTS AND DISCUSSION Function Option 1 Option 2 Option 3 Material of the base Steel Plastic Wood Material of the legs Aluminum Cover Heavy Cloth Light Cloth Leather Fix Glue Nails weld   Criteria Concept Easy to Carry and Use Low Weight Low Cost Durability Score Weight 25 Design (a) 3 2 9 425 75 50 225 Design (b) 8 6 775 200 150 Design (c) 10 5 650 250 125 - The chairs in the markets are fixed, heavy and expensive. - Best solution is (portable chair). - Material suggested is wood. - Wood is flexible, not heavy, very cheap and has a nice shape. 10 CONCLUSION From the comparison table we chose design (b) because it has the highest points. Design (b) is flexible, not heavy, very cheap, durable and has a nice shape.