Types of drawin
Freehand drawings, paintings or sketches These are good for recording the general visual effect of a building or for making personal statements about how you feel about a place. They can be of any size and in any medium you like. Scale drawings on graph paper These are useful for preliminary drawings, for recording measurements a s you carry out a survey, or for planning furniture layouts in rooms or buildings which have straight lines. Curves or complicated shapes are difficult to manage. Drawings on graph paper are not suitable for display purposes because the squares make it difficult to "see" the actual drawing. Scale drawings on plain paper If you want to make an accurate drawing, show interesting details or the colours or textures of materials on a scale drawing, use plain paper. In this case, you will have to use drawing equipment (below) to make your drawing. Computer drawings If your school has a CAD package, use a computer to make scale drawings based on your survey measurements. Drawing equipment To make scale drawings on plain paper, you will need: Drawing board Choose a material which lets you fix your drawing in place with drawing pins or masking tape. It must be smooth and have straight edges which are exactly parallel. T-square This is used for drawing horizontal lines which are absolutely level.
15 c m size 45" and 30-60"set-squares These are used for drawing vertical and inclined lines. You could use a protractor to do this, but it is slower and much more fiddley. Adjustable set-squares let you choose any angle you want, but they are expensive. The small set-squares found in most sets of mathematical instruments are too small for architectural drawings. Scale This looks like a ruler, but the divisions marked on it are in various standard proportions to actual distances - 1: l o , 1:20. 1 :50, 1:100 etc. Well-sharpened pencils 2H lead pencils are good for scale drawings. They make a clean, sharp line and don't smear easily. Shaping Space
DRAWING GUIDELINES A compass is sometimes useful, but most drawings can be made without one. Drawing pins or masking tape Use these to hold your drawing in place while you work. the equipment listed above is unavailable in the school, you can still make scale drawings which are suitable for display by using tracing paper overlaid on graph paper. Tape the tracing paper to the graph paper and tape the two to the table-top to prevent them from slipping about. If the drawing has to be moved before it is complete, do not detach the tracing paper from the graph paper - it will be almost impossible to re-position it accurately.
Types of paper
The kind of paper you need depends on the purpose of the drawing. Preparing a set of scale drawings from the measurements taken on a survey is not always easy, particularly if it is a large or complicated building. It may take several tries to get it right. If you use cartridge paper, you will have to do a lot of rubbing out and re-drawing, s o you can end up with a messy looking sheet. Tracing paper makes it easier. Lay a clean sheet of tracing paper over your first drawing. Trace the bits you think are correct, then work on the next piece of the puzzle. Repeat this process until you are satisfied that the whole building is correctly drawn. For this kind of rough work, it may be cheaper to buy a roll of detail paper. A 25-metre roll of A1 size costs about S12.00.
If you want to display a drawing made on tracing paper, pin it up with a sheet of white paper behind it. You can colour tracing paper with pastels or coloured pencils, but put the colour on the back of the sheet. It will show through gently on the front and can be applied or removed without messing up the lines drawn on the right side. Don't paint on tracing paper; it goes bubbly. For painting, use a sheet of suitable cartridge paper - one that hasn't had too much rubbing out and re-drawing...
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