What are construction lines in engineering drawing?

About Construction Lines. Construction lines help lay out small or detailed parts of a design on a sheet. You can draw them automatically one at a time, in sets of parallel lines, or freehand, point by point. To draw a construction line, first specify a single datum point through which the construction line will pass.

What is the purpose of construction lines in engineering?

The purpose of construction lines is to give you an outline of what you are about to draw. Object lines are used for outlining the shape and giving it its main features.

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.

What is a leader line in engineering drawing?

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’s the purpose of hidden lines?

Hidden lines are used to show surfaces that are not directly visible. All surfaces must be shown in all views. If an edge or surface is blocked from view by another feature, it is drawn using a hidden line.

What are object lines?

A visible line, or object line is a thick continuous line, used to outline the visible edges or contours of an object. 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.

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.

What are the five basic types of lines?

There are 5 main types of lines in art: vertical lines, horizontal lines, diagonal lines, zigzag lines, and curved lines.

What are the types of lines in technology?

The 5 Types of Lines

• Curvy Lines. Curvy lines are fun – they twist and turn and curl in lots of different directions!
• Vertical Lines. Vertical Lines go up and down. They can be straight or could zig-zag or curve.
• Diagonal Lines. Diagonal lines are slanted – they look like they are leaning over. They can also be curved or zig-zag a little bit.

What is the leader line?

A leader is a length of line attached to the business end of your main fishing line. It’s this separate length to which rigs or lures are tied. … Using specific types of leader can make it difficult for fish to see the line connected to your bait or lure. This then increases your chances of catching them!

What is a construction line?

Construction lines (also known as xlines) are temporary linework entities that can be used as references when creating and positioning other objects or linework. For example, you can use construction lines to prepare multiple views of the same item, or create temporary intersections to serve as object snaps.

What is a break line?

: the last line of a paragraph especially when not of full length when printed.

How do you use hidden lines?

Hidden lines are dashed lines used to represent internal features that are obscured by the object. These hidden lines represent the obscured corner of the notch. potential hidden lines in this sketch fall directly behind visible lines in the right side view.

What type of lines are used for hidden details?

Hidden line

Hidden details are shown by a series of dashes making up a broken line. It is normal practice that you place a dash at the beginning of the hidden line and another at the end where it meets an intersecting line.

What is a Dimension line?

The dimension line is a fine, dark, solid line with arrowheads on each end. It indicates direction and extent of a dimension. In machine sketches and drawings, in which fractions and decimals are used for dimensions, the dimension line is usually broken near the middle to provide open space for the dimension numerals.