KCSE 2014 Drawing & Design Paper 2 Questions with Marking Scheme

QUESTIONS

DESIGN PROBLEM: (40 marks)
People have had serious accidents caused by the use of ladders that are poorly designed
Design a ladder considering the following:

1. It should provide a reasonably strong grip when leaning on a cylindrical column.
2. It should have rungs (steps) that make the user comfortable when working
3. It should have provision for extension as the working height increases.
4. It should be folded for ease of storage and transportation.
5. Its base should provide a firm grip to the ground.

REQUIREMENTS

1. Make freehand sketches of TWO possible solutions for your design.(6 marks)
2. Select ONE of the designs in (a) above and make a refined labelled pictorial sketch.(9 marks)
3. Make detailed sketches of the mechanisms to allow for each of the considerations 1 to 5 above.(20 marks)
4. List TWO materials used and state ONE reason for the choice of each.(3 marks)
5. Name TWO methods of joining the parts and state where each is used.(2 marks)