Question: Are Construction Lines Thick Or Thin?

What does a hidden line look like?

If an edge or surface is blocked from view by another feature, it is drawn using a hidden line.

Figures 4-11 and 4-12 show objects that require hidden lines in their orthographic views.

The hidden portion of the line is drawn using a hidden-line pattern, and the visible portion of the line is drawn using a solid line..

What is the leader line?

A leader line is a line that establishes a connection between a graphical representation of an item and some text. A leader points to a bit of our drawing and says: ‘Oi – Look Here’ and ‘Read This! … The leader line itself should be a continuous Thin line (see this post on Linetype Definitions).

What is a hidden line?

A hidden line, also known as a hidden object line is a medium weight line, made of short dashes about 1/8” long with 1/16”gaps, to show edges, surfaces and corners which cannot be seen. Sometimes they are used to make a drawing easier to understand. Often they are omitted in an isometric view.

Do lines have thickness?

A line is defined as a line of points that extends infinitely in two directions. It has one dimension, length. … A plane extends infinitely in two dimensions. It has no thickness.

What is the heaviest line in a drawing?

The heaviest line weight indicates the ground line cut. The next heaviest line weight “profiles the planes closest to the plane of projection” (Ching & Juroszek, 1998, p. 152). Medium line weight indicates distance from picture plane, progressively getting lighter to describe objects further from the picture plane.

What is line thickness?

Line thicknesses is a property which can be applied to, and drives the representation of, almost all elements in a drawing, such as lines, curves, dimension lines, etc. (Line thickness cannot be applied to fonts and points). … For Drafting, line thickness is now defined in standards.

What are alphabet lines?

The Alphabet of Lines is a list of line symbols that engineers use in technical drawings to communicate specific shapes, sizes or surfaces. In the Alphabet of Lines, thick, dark lines represent the outline of an object, showing its visible surfaces and edges.

What type of lines are used on installation drawings?

Using the Alphabet of LinesConstruction Line. This line is used mainly in sketching, which is a freehand drawing technique. … Visible Object line. This line is used to draw all the edges of the object. … Hidden Object Line. … Centre Line (or centreline) … Extension Line. … Dimension Line.

Which type of line in a sheet should be the thickest?

The direction of the cutting line is shown with a line called a cutting plane lineHeavy dashed line that shows a theoretical cut through an object.. This is the thickest line that may appear on a drawing.

What are the different types of construction lines?

Terms in this set (25)Object Lines. also called visible lines, are used to show the main outline of the building, including exterior walls, interior partitions, porches, patios, driveways, and walls. … Dimension Lines. … Hidden Lines. … Center Lines. … Extension Lines. … Cutting-Plane Line. … Break Lines. … Phantom Line.More items…

Which has no length breadth and thickness?

A point has no length or width or thickness. A point in geometry is represented by a dot. To name a point, we usually use a (capital) letter.

What are the 7 types of lines?

There are many types of lines: thick, thin, horizontal, vertical, zigzag, diagonal, curly, curved, spiral, etc. and are often very expressive.