Phantom Line: Light, Broken line made up of a series of one long and two short dashes. Long break Line: Ruled, light line with freehand zigzags. shows a short break or show partial section. Short Break Line: Heavy, irregular line drawn freehand. Indicates location and extent of a surface area. Section Lines: series of solid or solid and broken lines arranged in a specific pattern.Ĭhain Line: Heavy, broken line made up of a series of long and short dashes alternately spaced. Indicates imaginary cut made through object Indicates imaginary cuts made through objectĪlternate Cutting plane line: solid heavy line or a series of long dashes with arrowheads placed at right angles. When reading welding blueprints this type of weld is known as a Single Bevel Butt with Broad Root Face. The other piece of metal will feature a straight horizontal edge. Arrowheads are placed at right angles to the cutting plane line. When you add a stem at the bottom of the Single Bevel Butt this indicates a weld that has a straight horizontal edge that branches off to the right or left at the end of the stem. Preferred Cutting Plane Line: Heavy broken line made up of a series of one long and two small dashes alternately spaced. Leader: Fine, straight line with an arrowhead or round solid dot at one end that is usually drawn at an angle which is used to point directly to a surface for dimensioning or adding a note. Hidden Lines: Broken line of medium thickness that shows edges of an object or outlines not visible to the eyeĬenter Line: Broken line made up of short and long dashes alternately spaced that show the center of circles, arcs, and symmetrical objects.Įxtension Line: Extension lines are fine lines that extend from the object with slight break between the show dimensioning points.ĭimension Line: fine lines with arrowheads, unbroken except where the dimension is placed that show distance given by the dimensions. Phantom Line: Light, Broken line made up of a series of one long and two short dashes.Object Lines: Represents a thick solid line that shows the visible shape of an object or part. Long break Line: Ruled, light line with freehand zigzags. 22K 1M views 3 years ago How-To: In this mini-series, were going to cover Construction Blueprints from start to finish. 1 The title block's first section lists the blueprint's name, number, as well as the location, site, or vendor. If you are involved in any serious construction work, you will want to make sure to read it all thoroughly. Indicates imaginary cut made through object These often appear at the beginning of any blueprints. Arrowheads are placed at right angles to the cutting plane line. Object Lines: Represents a thick solid line that shows the visible shape of an object or part.
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