KCSE 2012 Drawing and Design Paper 2 with Marking Scheme

DESIGN PROBLEM (40 marks)

Urban lifestyle may not provide adequate outdoor space for cloth lines. This compels the house occupants to utilize any available space inside the house to hang washed clothes to dry.

Design a suitable device that can hold several hanging lines considering the following:

1. the device should be collapsible for ease of movement and storage;
2. it should be stable and strong enough to hold clothes to dry;
3. it should also be adjustable to different heights.

REQUIREMENTS

1. Make freehand pictorial sketches of two possible designs of the device.  (6 marks)
2. Select one of the designs in (a) above and make a refined pictorial sketch and label two parts.  (16 marks)
3. Make detailed exploded sketches of the mechanisms used in considerations i and iii above.  (12 marks)
4.  
   1. List two different materials used in the device.
   2. State one reason for the choice of each material.   (3 marks)
5. List two methods that could be used in joining the parts of the device and state where each is applied.   (3 marks)

MARKING SCHEME

1.   
   
2.  
   
3.  
   
   
4. MATERIALS USED
   1.  
      • Aluminium tubular  (1 mark)
      • Rubber stoppers  (1 mark)
   2. CHOICE OF MATERIAL
      • Aluminium tubular -  light in weight for easy movement  (½ mark)
      • Rubber stoppers: Anti-slip materials to reduce friction on the ground when device is at work   (½ mark)
5.  
   1. TWO JOINING METHODS
      • Riveting    (1 mark)
      • Glueing    (1 mark)
   2. WHERE APPLIED
      • Riveting :- At the stands mjoints and collapsible wing joints   (½ mark)
      • Glueing:- Fixing rubber stoppers with strong adhesive to the stand base frame when device is at work   
        (½ mark)
        TOTAL = 40 marks