lines Flashcards
What is the purpose of an orientation mark?
To locate the center of a sheet
As per which IS code are lines classified?
IS: 10714-1983
Which lines are used to identify the cut portion of an object when a section plane cuts the object?
Hatching lines
What are hatching lines also known as?
Section lines
At what angle are hatching lines uniformlyspaced and inclined?
45 degrees
What is the minimum spacing between parallel lines, including hatching lines?
0.7 mm
What is the purpose of continuous thick lines?
Visible outlines, visible edges
What is the purpose of continuous thin straight lines?
Dimension lines, projection lines or extension lines, leader lines, hatching
What is the purpose of continuous thin freehand/zigzag lines?
Partial/interrupted views and sections
What is the purpose of dashed thick or thin lines?
Hidden edges, hidden outlines
What is the purpose of chain thin lines?
Centre lines, lines of symmetry, trajectories
What is the purpose of chain thin lines with thick ends and changes of direction?
Cutting planes
What is the purpose of chain thick lines (J1)?
Indication of lines or surfaces to which a special requirement applies
What is the purpose of chain thin double-dashed lines (K1)?
Outlines of adjacent parts
What is the purpose of chain thin double-dashed lines (K2)?
Alternative and extreme positions of movable parts
What is the purpose of chain thin double-dashed lines (K3)?
Centroidal lines
What is the purpose of chain thin double-dashed lines (K4)?
Initial outlines prior to forming
