Table of Contents
What does it mean to dimension a drawing?
Definition Dimensioning is the process of specifying part’ s information by using of lines, number, symbols and notes . Notes 1. Lines to be used are always thin continuous line. 2. Symbol or abbreviation commonly found in a drawing are – “ diameter ” is represented by a symbol “ ”.
What are the rules of dimensioning in a drawing?
Rule 1) Dimensions should be arranged for maximum readability. The spacing between dimension lines should be uniform throughout the drawing. Do not dimension inside an object or have the dimension line touch the object unless clearness is gained.
Why do you dimension the drawing?
If a drawing is to be complete, so that the object represented by the drawing can be made as intended by the designer, it must tell two complete stories. It tells this with views, which describe the shape of the object, and with dimensions and notes, which gives sizes and other information needed to make the object.
How do you represent dimensions?
Dimensions are expressed as width by length by height or depth in three-dimensional space.
What is wrong statement about dimensions?
3. Which is the wrong statement regarding dimensions? Explanation: There is no such rule that the dimensions should be placed only on left side of drawing because it may not possible to represent every dimension only on left side.
How do you write dimensions in engineering drawing?
Dimension lines should be spaced uniformly throughout the drawing. They should be at least 3/8″ from the object outline and 1/4” apart. 13. No line of the drawing should be used as a dimension line or coincide with one.
What dimensioning means?
Dimensioning is the process of measuring either the area or the volume that an object occupies.
What makes a dimension basic?
What Are Basic Dimensions? Basic dimensions describe the theoretically exact location, orientation, size, or profile of a feature or datum target. Because basic dimensions are theoretically perfect dimensions, there are no tolerances associated with them.
Why are dimensioning rules necessary?
The purpose of dimensioning is to provide a clear and complete description of an object. A complete set of dimensions will permit only one interpretation needed to construct the part. Dimensioning should follow these guidelines.
What are general rules of dimensioning?
Dimensions should NOT be duplicated, or the same information given in two different ways. Don’t over-‐define or under-‐define the object. 2. No unnecessary dimensions should be used – only those needed to produce or inspect the part.
What are the do’s and don’ts of dimensioning?
1. Each dimension should be given clearly, so that it can be interpreted in only one way. 2. Dimensions should not be duplicated or the same information be given in two different ways, and no dimensions should be given except those needed to produce or inspect the part.
What are the limitations of chain dimensioning?
The right-hand hole is only related to the datum surface in a secondary manner and the right-hand edge is only related to the left-hand edge in a tertiary manner. The very name ‘chain’ illustrates the disadvantages in that the dimensions are chained together and not individually related back to a datum.
What is a phantom line?
Lines that are made visible as dots or dashes to reveal the edges of objects currently hidden from view.
What is dimension in engineering drawing?
A dimension is for size and position (of the designed/modeled shape). • A DIMENSION is a numerical value expressed in appropriate units of measurement and used to define the size, location, orientation, form or other geometric characteristics of a part.
Is dimension and area the same?
As nouns the difference between dimension and area is that dimension is a single aspect of a given thing while area is (mathematics) a measure of the extent of a surface; it is measured in square units.
What are the dimensions called?
The world as we know it has three dimensions of space—length, width and depth—and one dimension of time.
Which type of line is part of dimensions?
Dimension line: It is a thin continuous line used for giving dimensions. The line terminates in arrow-head where the dimension lines meet the extension lines.
What are the two systems of placing dimensions on a drawing?
Explanation: The two systems of placing dimensions are aligned system and unidirectional system. In the aligned system, the dimension is placed perpendicular to the dimension line.
How many types of dimensions are there in engineering drawing?
The basic types of dimensioning are linear, radial, angular, ordinate, and arc length.
What are the components of correct dimensions?
A dimension consists of four components: A dimension value. A dimension line that is parallel to the direction of the described feature. A pair of arrowheads. A pair of extension lines projecting from the feature to which the dimension refers.
What are the different types of dimension?
Top 9 Types of Dimension Conformed Dimensions. A dimension is considered a conformed dimension and is found in many places. Role Playing Dimensions. Shrunken Dimensions. Static Dimensions. Degenerate Dimensions. Rapidly Changing Dimensions. Junk Dimensions. Inferred Dimensions.
What are dimensions in art?
(noun) A single aspect of a given thing. A measure of spatial extent in a particular direction, such as height, width or breadth, or depth.
What does t mean in dimensions?
t = metric ton (mass) T = tesla (magnetic flux density) tablespoon = 0.5 oz fluid (volume) tael (Chinese tael) = 0.0625 catty (mass) talent (Greek talent) = 60 mina (mass).
What is dimension and example?
A measurement of length in one direction. Examples: width, depth and height are dimensions. A line has one dimension (1D), a square has two dimensions (2D), and a cube has three dimensions (3D).
What is LMC and MMC?
MMC is the condition of a feature which contains the maximum amount of material, that is, the smallest hole or largest pin, within the stated limits of size. LMC is the condition in which there is the least amount of material, the largest hole or smallest pin, within the stated limits of size.
What is the nominal dimension?
nominal dimension (nominal size) The sizes used to describe the approximate characteristics of the product rather than the exact dimensions.
