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Newbattle High School. Graphic Communication. Department of Craft, Design, and Technology. GC Credit Paper – 2002 – Question 7. An End Elevation and Plan of a cassette rack are given. A pictorial view of the rack is also shown. Using the sizes from the End Elevation and Plan, draw:
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Newbattle High School Graphic Communication Department of Craft, Design, and Technology.
GC Credit Paper – 2002 – Question 7 An End Elevation and Plan of a cassette rack are given. A pictorial view of the rack is also shown. Using the sizes from the End Elevation and Plan, draw: a) an Elevation projected from the End Elevation and Plan, and (DA 7) b) a Development of the metal cassette support. (DA 7) Do not show hidden detail
GC Credit Paper – 2002 – Question 7 • Start by projecting the position and size of the Elevation from the End Elevation and Plan.
GC Credit Paper – 2002 – Question 7 • Project the thickness and chamfer of the base from the End Elevation and Plan. Project the straight edges for the slots from the End Elevation and Plan.
GC Credit Paper – 2002 – Question 7 • Darken the outlines of the known lines on the Elevation.
GC Credit Paper – 2002 – Question 7 • Divide the Plan into 30o/60o lines and transfer these generators onto the Elevation and the Plan.
GC Credit Paper – 2002 – Question 7 • Project from the End Elevation to find the points for the curve on the Elevation. Draw a smooth curve through each of the points. Darken the curve outline to complete the Elevation.
GC Credit Paper – 2002 – Question 7 • Project the height of the Development from the End Elevation and draw the first generator to show where the Development will start. Draw each of the other generators, measuring the distances apart from the Plan.
GC Credit Paper – 2002 – Question 7 • Project the points for the curve from the End Elevation onto the Development. Indicate where each point is located and draw a smooth curve through each point.
GC Credit Paper – 2002 – Question 7 • Darken the outlines of the Development. Project the cuts from the End Elevation onto the Development. Darken the cuts on the Development to complete the drawing.
GC Credit Paper – 2002 – Question 7 • This drawing was awarded 14 Drawing Ability marks. • The following slides show the official marking scheme for this drawing.
GC Credit Paper – 2002 – Question 7The Marking Scheme – box a • Correct length and height for the outline of the Elevation • 1 mark
GC Credit Paper – 2002 – Question 7The Marking Scheme – box b • Lines for base of CD holder in Elevation • 1 mark
GC Credit Paper – 2002 – Question 7The Marking Scheme – box c • Vertical lines for CD rack on Elevation • 1 mark
GC Credit Paper – 2002 – Question 7The Marking Scheme – box d • Horizontal lines for CD rack on Elevation (If 3 complete sets are shown then full marks) • 1 mark
GC Credit Paper – 2002 – Question 7The Marking Scheme – box e • Curve construction on Plan and End Elevation • 1 mark
GC Credit Paper – 2002 – Question 7The Marking Scheme – box f • Finding points for curve on Elevation • 1 mark
GC Credit Paper – 2002 – Question 7The Marking Scheme – box g • Drawing a smooth curve through the points found on the Elevation • 1 mark
GC Credit Paper – 2002 – Question 7The Marking Scheme – box h • The correct length for the base of the Development to an accuracy of +/- 8mm • 1 mark
GC Credit Paper – 2002 – Question 7The Marking Scheme – box i • Correct height for Development • 1 mark
GC Credit Paper – 2002 – Question 7The Marking Scheme – box j • Correct length for the slots on the Development. • 1 mark
GC Credit Paper – 2002 – Question 7The Marking Scheme – box k • Correct height for the slots on the Development. • 1 mark
GC Credit Paper – 2002 – Question 7The Marking Scheme – box l • Projection of the curve points from the End Elevation to the Development. • 1 mark
GC Credit Paper – 2002 – Question 7The Marking Scheme – box m • Indication of where the points of the curve pass through on the Development. • 1 mark
GC Credit Paper – 2002 – Question 7The Marking Scheme – box n • Drawing a smooth curve through points found • 1 mark