Certain attributes on a Engineering drawing requires details ways that indication. Because that example, feet require facility lines to identify the center and show the it is round. Hidden detail are shown with a certain line type to stop confusion v visible edges.

You are watching: Types of line in engineering drawing

Most CAD software program packages will have actually these various line species predefined together layers. Depending on the layer chosen, the line will display it in a details way. Often, most drafting carriers will have actually their own custom great with various colours, but the final product on paper will (or should) it is in as debated below.

LineDescription
\"*\"
Continuous thick Line
\"*\"
Continuous slim Line
\"*\"
Continuous thin Freehand heat
\"*\"
continuous Thin Zigzag line
\"*\"
Thick or slim Dashed heat
\"*\"
Thin Chain heat
\"*\"
Thin Chain Line with Thick ends
\"*\"
Thick Chain line
\"*\"
Thin Chain dual Dashed line

Continuous thick Line

The constant thick heat is provided to show visible outlines or edges of a ingredient or assembly. This line might be made slim if the illustration is congested and also allot of lines space so close to each various other that the clarity of the illustration is negatively influenced.

consistent Thin line

The continuous thin heat is the most frequently used line type on engineering Drawings. These lines room solid and has no break in them. Here is the list of instances where the continuous thin line will be used:

Imaginary currently of intersectionDimension lineProjection linesLeader linesHatchingOutlines of revolved sectionsShort center lines (as opposed to the chain line)Bending lines

constant Thin Freehand heat

Freehand lines reflects breaks or cut in parts or assemblies. The edge of the partial or interrupted see is indicated with a freehand line.

continuous Thin Zigzag Line

The continuous Thin Zigzag Line shows a rest line. If a component needs to it is in shortened through a break because that ease the visibility, a break deserve to be made using this line. *Remember, any type of dimensions spanning over the break demands to have actually a measurement break shown on the dimension line also.

Thick or thin Dashed line

The Dashed heat is provided to indicate covert details like concealed outlines and hidden edges. The dashed line might be one of two people thick or thin, yet only one type (thick or thin) should be provided on a single drawing or collection of drawings.

Thin Chain Line

The slim Chain line is offered to indicate center lines, the present of symmetry and additionally trajectories. Frequently this line is offered as a suggest of reference on engineering drawings.

Thin Chain Line with Thick ends

Sectional cutting planes are suggested with a slim Chain Line through Thick ends. This helps to recognize the aircraft in i m sorry the part or assembly is cut. If the reduced line is on more than one plane, the readjust in direction should also be indicated with more thick ends.

Thick Chain Line

A special Chain line is offered to show special demands on a surface. This heat does not type part of the geometry of the part, however is rather provided to identify the surface

Thin Chain double Dashed Line

The slim Chain dual Dashed line is used to show adjacent components. This is especially advantageous when the component has a reference to the present components.It is also used come show different or excessive positions. On drawings where bends space indicated, this lines are supplied to present the early outlines before forming or bending.One can also use this heat to indicate parts or components situated in former of the cutting plane, to provide reference come the component shown.

See more: The Offspring Of The P Generation Are Referred To As The, First Filial Generation

In closeup of the door …

In design Drawings, a line is not simply a line. The various lines have meaning to them. The above mentioned line varieties are according to the needs of ISO requirements (and plenty of other national standards).