CONSTRUCTION - DRAWINGS - SKETCHES

Sketch ~ this can be defined as a draft or rough outline of an idea, it can be a means of depicting a three dimensional form in a two-dimensional guise. Sketches can be produced free-hand or using rules and set squares to give basic guide lines.

All sketches should be clear, show all the necessary detail and above all be in the correct proportions. Sketches can be drawn by observing a solid object or they can be produced from conventional orthographic views but in all cases can usually be successfully drawn by starting with an outline `box' format giving length, width and height proportions and then building up the sketch within the outline box.

Orthographic Projection ~ a means of drawing independent views of a solid object on a planes surface.