Glencoe: 3 Flashcards
Leader lines:
connect a note or reference part of the drawing.
how do leader lines end:
They usually end in an arrowhead or a large circular dot. Dots should be within the outline of an object. Leaders should end at any suitable portion of the note reference or dimension.
Break lines:
may be solid, free hand lines that indicate short breaks.
Break lines for land breaks:
free hand zigzags
Sectioning lines:
Indiciate exposed surfaces of an object in a sectional view. They are generally full thin lines, but they vary with the kind of material shown.
Extension Lines:
mark the end points of a dimension and should not touch the outline of the object
Hidden Lines:
Short evenly spaced dashes that show the hidden features of a part of a drawing
What do hidden lines always begin with:
a dash in contact with the line from which they start, however a space is added when such a dash would form the continuation of a full line.
Outlines or visible lines:
represent those edges of the object that can actually be see
Cutting plane lines
show sections that would otherwise be hidden.
What is a Section:
A section is a view that shows an object as if part of it were cut away to expose the inside
Dimensions:
Dimension are numbers that tell the size of something.
Where are plans dimensioned:
outside and inside building lines. Outside show openings and exterior wall changes. Inside locate walls relative to one another
How do you derive dimensions not shown?
Adding or subtracting other dimensions
Symbols:
Symbols are used to represent things that would be impractical to show in other types of drawings doors windows plumbing fixtures
