All engineering drawings are made on sheets of paper of strictly defined sizes

All engineering drawings are made on sheets of paper

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All engineering drawings are made on sheets of paper of strictly defined sizes.
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Instruments used in making Engineering Drawing (Cont..) 11/10/2019 12 Department of Civil Engineering, University of Engineering and Technology, Peshawar Triangles (setsquares) They are used to construct the most common angles (i.e. 30, 45 , 60) in technical drawings. The 450 x 450 and 300 x 600 triangles are the most commonly used for ordinary work .
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Instruments used in making Engineering Drawing (Cont..) 11/10/2019 13 Department of Civil Engineering, University of Engineering and Technology, Peshawar T- square It is used primarily to draw horizontal lines and for guiding the triangles when drawing vertical and inclined lines. French curve It is used to draw irregular curves that are not circle arcs. The shape varies according to the shape of irregular curve
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Instruments used in making Engineering Drawing (Cont..) 11/10/2019 14 Department of Civil Engineering, University of Engineering and Technology, Peshawar Protractor It is used for laying out and measuring angle Pencil The student and professional man should be equipped with a selection of good, well-sharpened pencil
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Instruments used in making Engineering Drawing (Cont..) 11/10/2019 15 Department of Civil Engineering, University of Engineering and Technology, Peshawar Pencils Classification according to lead hardness is: Hard grades Medium grades Soft grades 9H Hardest 3H Hardest 2B 8H 2H 3B 7H H 4B 6H F 5B 5H HB 6B 4H Softest B Softest 7B
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Instruments used in making Engineering Drawing (Cont..) 11/10/2019 16 Department of Civil Engineering, University of Engineering and Technology, Peshawar Compass
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  • Fall '18
  • amjad naseer

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