Center lines define the center of arcs, circles, or symmetrical parts. What is the difference between construction lines and object lines? Construction lines are thin lines that serve as guides while sketching or drawing while an object line is a heavy solid line used on a drawing to represent the outline of an object.
Full Answer
What is the difference between a center line and object line?
Both would be drawn with object lines. A center line is a .3 mm to .5 mm line that alternates between short and long dashes. It is used to identify a hole as shown from the side. If a hole were in a plate, the center line would locate the center in the view where the feature isn’t shown.
What is the center construction line on a road?
design centerline is typically the crown of the road at the center construction line is a layout line used for construction. Surveyors stake this line and stake offsets to the line for curb, gutter, crown, etc. It can be anywhere close to the road and it may or may not be at the center of the road.
What is a construction line?
If the lines are not carefully defined in the documents, yours is a wise question and the Contract Administrator (or whoever)owes you an answer. I've had many a contractor kick off a project without understanding the basics and, you know the rest. construction line is a layout line used for construction.
What is the difference between hidden lines and centerlines?
• Hidden lines: indicate areas or objects not visible on the surface, or objects hidden behind others. They are also used to show objects above the cutting plane of a floor plan, such as wall cabinets, beams, arches, etc. • Centerlines: locate the symmetrical center of objects such as windows, doors, beams, and walls.
What is an object line in construction?
• Object lines: show major outlines of building elements or objects. • Hidden lines: indicate areas or objects not visible on the surface, or objects hidden behind others. They are also used to show objects above the cutting plane of a floor plan, such as wall cabinets, beams, arches, etc.
What are center lines in construction?
What Does Centerline Mean? The centerline is an imaginary line through the exact center of a design element, relative to a force or object interacting with it. The centerline may represent a horizontal or vertical center.
What is an object line?
A visible line, or object line is a thick continuous line, used to outline the visible edges or contours of an object.
What are the different types of construction lines?
Solid Single LineSolid, Single Lines Viewed in a Floor Plan. ... Solid, Single Lines in Elevation Views. ... Pairs of Solid Lines with a Shaded Fill in a Floor Plan. ... Short-Dashed Lines Viewed in a Floor Plan. ... Short-Dashed Lines in an Elevation View. ... Long-Dashed Lines in a Floor Plan. ... A Line with Alternating Short and Long Dashes.More items...•
What are center lines?
Center lines denote a circular feature such as a shaft or a hole. A rectangular feature seen on an elevation of a drawing could be identified either as a circular feature or a rectangular feature. The center line is the method of quickly identifying the shape.
What's a center line?
Definition of centerline : a real or imaginary line that is equidistant from the surface or sides of something.
What are the 4 types of lines?
They are:Horizontal Lines.Vertical Lines.Parallel Lines.Perpendicular Lines.
How thick is the object line?
The outline of the object is a solid black line called an object lineA solid black line that defines the outline of an object.. It has a thickness of about 0.024″ (0.6mm).
What is the difference between the cutting plane line and the Centre line *?
Explanation: In engineering drawing, a change of plane is indicated by drawing continuous thick lines. Continuous thin lines are used for indicating dimension line, hatching line, revolved section, etc. Long chain lines are used to indicate center line, cutting lines. 2.
What are the 3 major line types that are used for technical 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.
What are the 6 types of construction drawings?
What Are the Six Types of Construction Drawings?Plans.Interior and exterior elevations.Building and wall sections.Interior and exterior details.Schedules and room finishes.Framing and utility plans.
What are 5 types of lines?
There are 5 main types of lines in art: vertical lines, horizontal lines, diagonal lines, zigzag lines, and curved lines. Other types of lines are simply variations of the five main ones.
What are object lines?
Object lines are solid heavy lines, .7 mm to .9 mm. These lines define the shape of the object portrayed and are the outermost outline of the object. A round bar is shown as a circle in one view and a rectangle in the other. Both would be drawn with object lines.
What is the center line on a plate?
A center line is a .3 mm to .5 mm line that alternates between short and long dashes. It is used to identify a hole as shown from the side. If a hole were in a plate, the center line would locate the center in the view where the feature isn’t shown.
What is hidden line?
A hidden line is a .3 mm to .5 mm dashed line. It shows features, such as holes, in a view they are not in. The feature will be shown in another view of the drawing.
What is a section line?
A section line is a .7 mm to .9 mm line drawn at angles, normally 45, 30 or 60 degrees, to show a feature more clearly . The cutting plane line is a .5 mm dashed line with arrows on the end to show where it slices through the material.
Why are line types used in drawing?
Line types used in technical drawing are used for different purposes to provide specific information to the people looking at the drawing. Drafting students or those reading the drawings have to learn what they mean, just as one learns a new language.
What is the construction baseline?
Terminology may vary. Here, I have seen a "Construction Baseline" which may typically be the center of right-of-way (but may be another alignment) - then there is the roadway centerlines. The roadway centerlines may or may not be parrallel with the construction baseline and the may have different curve data and centers.
Do job specifications have an apendix?
Job specifications should have an apendix describing terminology for the specific project. If not, like said above it wouldn't hurt at all to ask the question. There are no stupid questions related to construction.
Will Eng tips check this out?
The Eng-Tips staff will check this out and take appropriate action.
Do contractors have different names?
it would be wise to discuss this in the kick-off meeting just so that you all have the same understanding of what it is (even if it is different definition on another project) contractors tend to have different names for the same thing , especially now days with people travelling all over the world for work
What are construction lines?
Construction lines (additionally called xlines) are transient linework entities that may be used as references whilst developing and positioning different items or linework.
What are object lines?
A visible line, or object line is a thick non-stop line, used to define the visible edges or contours of an object. Hidden Line.
What are the most common views on a multiview drawing?
Although six unique aspects may be drawn, generally 3 views of a drawing deliver sufficient facts to make a 3-dimensional object.
How do you use hidden lines?
Hidden lines are dashed lines used to symbolize inner capabilities which can be obscured by the object. These hidden lines constitute the obscured nook of the notch.
What kind of lines are used for hidden details?
Hidden details are proven with the aid of using a sequence of dashes making up a damaged line.
What is a Dimension line?
The dimension line is a fine, dark, strong line with arrowheads on every cease. It shows the course and quantity of a size.
FAQs
The cause of construction lines is to provide you a definition of what you’re about to draw. Object traces are used for defining the form and giving it its principal capabilities.
What are medium weight lines?
Medium Lines. Medium-weight linesare used for hidden objects and are usually drawn dashed or dotted. They are also used for outlining the planes of objects and for centerlines, as well as for furniture and equipment. Thin, Light Lines.
What is a dotted line in drafting?
In drafting, continuous lines of various weightsare used to represent objects and major elements such as structural walls and columns. Dotted lines are usually used to denote objects hidden from view.
What are centerlines used for?
They are also used to show objects above the cutting plane of a floor plan, such as wall cabinets, beams, arches, etc. • Centerlines: locate the symmetrical center of objects such as windows, doors, beams, and walls. • Dimension lines and extension lines: indicate the physical dimensions of objects.
What is a dot line?
Dotted lines are usually used to denote objects hidden from view. However, they can also be used to denote other things, such as a wheelchair turning radius or ceiling height changes on a floor plan. The following are the most commonly used line types. Examples are shown in Figure 3-7.
What are lines used for in drafting?
The weight of a line refers to its thickness and intensity; a line can also be continuous or dashed. The direction can be straight, curved, diagonal, or a combination of these. In drafting, continuous lines of various weightsare used to represent objects and major elements such as structural walls and columns. Dotted lines are usually used to denote objects hidden from view. However, they can also be used to denote other things, such as a wheelchair turning radius or ceiling height changes on a floor plan. The following are the most commonly used line types. Examples are shown in Figure 3-7.
What is a thick line?
Thick, dark lines are used for major sections (Figure 3-9), details, borderlines, and cutting plane lines. A thick, intense line can represent the walls on a floor plan or structural members, such as fireplaces or stairways, the outline of a ceiling on a reflected ceiling plan, or the outline of a building on a site plan. Thick, intense lines are also used to emphasize an object or element.
What is Figure 3-7 used for?
Figure 3-7 These are common line types used in drawings to describe objects, hidden conditions, and important relationships between components and space.
