waecE-LEARNING
Technical Drawing Paper 2, May/June. 2014  
Questions: 1 2 3 4 5 6 7 8 9 10 Section B 1 2 Main
General Comments
Strength
Weakness/Remedies
Question 4 SECTION A (PART 1)

       

.

Fig. 4 shows the front elevation of a hexagonal prism side 25 with a hole diameter 30.  Draw full size, the following:

  1. given elevation;
  1. plan;

 

  1. end elevation;
  1. true shape on plane X – X


Observation

A TRUNCATED HOLLOW HEXAGONAL PRISM
            Candidates were expected:
            (a)        PLAN
                        (i)         draw the hexagonal plan;
                        (ii)        draw the inner hole  Ø30;
                        (iii)       divide the circle into 8 or 12 equal parts;
                        (iv)       hatch.

 

 

            (b)        GIVEN ELEVATION
                        (i)         project from the plan to draw the elevation;
                        (ii)        draw the inner hole Ø30;
(iii)       indicate the cutting plane X – X at 300 to the horizontal
           
            (c)        END ELEVATION

  1. project from the  plan and front elevation;
  2. draw the end elevation:
  3. the body of the prism;
  4. the cut surface (hexagon and elliptical shape).
  5. hatch.

 

(d)       TRUE SHAPE

  1. project lines perpendicular to the cut surface;
  2. draw reference line P – P parallel to the cutting plane;
  3. take measurements from the plan and transfer same to obtain the points of the true shape;

 

  1. draw the true shape;
  2. hatch.

 

The solution is shown below:

 
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