drafting tools & their uses in architecture educationpdf
- 3. Unlike other subjects, objectives of drawing cannot be obtained without the presence of drawing instruments. Each tools and materials have their own functions and uses in completing a drawing.
- 4. Any activity with the aid of these mechanical instruments is called MECHANICAL DRAWING. MECHANICAL DRAWING - is the method of constructing a design or an object with the use of prescribed mechanical instruments.
- 5. the most commonly used tools of a draftsman. They come in different grades of softness to hardness. American system of pencil grades range from #1-#3, while in the European system rages from 9H-9B.
- 6. 9H 8H 7H 6H 5H 4H 3H 2H H F HB B 2B 3B 4B 5B 6B 7B 8B 9B HARDEST MEDIUM SOFTEST
- 8. -used for measuring and setting of dimensions usually expressed in centimeters and inches, and drawing straight lines.
- 10. - used to draw vertical and oblique lines. The most commonly used triangles are the 45 degree and the 30 degree by 60 degree.
- 13. - used for measuring and setting of angles
- 14. - used for measuring and setting of angles
- 15. - tools used in drawing arcs and circles. Similar to dividers, they are adjusted the same way.
- 17. - used to divide distances into a number of equal parts and to transfer measurements and spacing points of lines. Looks similar to a compass.
- 19. - composed of a long strip called blade and a short piece called head. Used in drawing horizontal lines and also serves as guide in drawing vertical or diagonal lines for triangles.
- 22. - a flat piece of plastic with standard symbols cut in it. The drafting templates shapes are used as guides for drawing symbols on plans.
- 24. - a type of scale used in general drawing. The scale has various divisions. Its main purpose is to reproduce the dimension full of size on a drawing or to reduce or enlarge them.
- 26. - used to remove pencil or ink smears. The erasing shield is made up of metal or celluloid with irregular holes. It protects the rest of the drawing when making an erasure.
- 28. - These are used to fasten paper to the drawing board or table. Masking tape, scotch tape and other tapes are used. Thumb tacks are sometimes used in place of tapes.
- 30. - a devise combines the protractor with triangles to produce great versatility of use.
- 32. - used to draw irregular curves.
- 33. - used to draw irregular curves.
- 34. - with the tube and needle point, is available in several line width which are fixed and suitable for freehand and mechanical drawing and line work.
- 36. - black, waterproof and quick to dry ink used in drawing
- 38. - a hard and smooth surface. It does not groove easily when pressure is applied to the pencil. It can withstand erasures. Oslo paper is an example of good drawing paper.
- 40. - Consists of pigment and mucilage, a gummy substance from various plants. It is used to color drawings.
- 42. - thin, transparent paper on which inked or penciled drawing is made for reproduction in blue print or white print.
- 44. - refers to a table where the drawing paper is laid and fastened. Their working edge should be perfectly straight and their surface, trim and smooth as this is the edge along which the T-square is moved.