This was a question on reading and interpreting a drawing in isometric projection and transferring this drawing into orthographic views.

            Many candidates attempted this question and candidates strength were shown in the following areas:

            -           good use of lines and instruments;
            -           drawing the front elevation;
            -           drawing the plan and end elevation.

            However, some of the candidates were unable to:

• draw the centerlines;
• draw the projection lines;
• draw hidden lines;
• position the views correctly;
• label the views.

 

            Candidates were expected to do the following:

            ORTHOGRAPHIC PROJECTION OF THE BLOCK

• Front Elevation

 

• draw four vertical lines;
• draw three horizontal lines;
• draws two centre lines;
• draw two circles;
• label front elevation.

• Plan

 

• draw six vertical lines (outlines);
• draw four hidden lines;
• draw four horizontal lines;
• draw one centre line;
• label plan.

• Side Elevation

 

• draw four vertical lines;
• draw five horizontal lines;
• draw one slant line;
• draw one centre line;
• label side elevation.

D.        (i)         using correct scale (size);
            (ii)        correct position of views.

 

 

 

The solution is shown below: