Blueprint Reading
58 Chapter 4 length of the instrument: one is read from left to right and the other from right to left. Likewise, a scale is usu ...
Understanding Dimensions 59 Figure 4.4A An Illustration showing different triangular scales. ...
60 Chapter 4 Figure 4.4B An Illustration of 6-inch scales. Figure 4.4C A typical architect’s scale showing end view. ...
Understanding Dimensions 61 3/8 inch = 1 foot (no precise metric equivalent—actual 1/32) 1/2 inch = 1 foot (1/20 or 1/25 metric ...
62 Chapter 4 Figure 4.5A A drawing showing scales in imperial (1/4" = 1'-0"). ...
Understanding Dimensions 63 No periods are used after the unit symbols. Scale on drawings is to be shown by a ratio (1:1, 1:10, ...
64 Chapter 4 ric units, 5/8 inch thick equals 17 mm and 3/4 inch thick equals 20 mm. Using the same method, the length and width ...
Understanding Dimensions 65 When reading metric dimensions on a drawing, all dimensions within dimension lines are normally in m ...
66 Chapter 4 Indication of Scale. The scale should normally be noted in the title block of a drawing. When more than one scale i ...
Understanding Dimensions 67 Figure 4.7 A diagram showing the use of projection and dimension lines. Figure 4.8 Two line drawings ...
68 Chapter 4 4.4 ANGULAR DIMENSIONS. Angular dimensions are used for measuring and displaying inside and outside angles. These a ...
Understanding Dimensions 69 ample, a finished (dressed) 2 x 4 piece is less than 2 inches thick and less than 4 inches wide. The ...
In design engineering, size is used for purposes of general identification; the actual size of a part will be approximately the ...
5 Types of Views 5.1 INTRODUCTION. Drawings are the main vehicle of communication in the construction industry, and in learning ...
72 Chapter 5 Figure 5.1A An example of a simple drawing of objects that essentially requires only two views to read. Figure 5.1B ...
Types of Views 73 Figure 5.1C An example of a simple drawing of objects that essentially requires only two views to read. Figure ...
74 Chapter 5 drawing” has come into general use, indicating that more than one view is used to illustrate an object, but the ter ...
Types of Views 75 Figure 5.3 An illustration of an object showing the six principal views in orthographic projection based on th ...
76 Chapter 5 In first-angle projection, the object lies above and before the viewing planes; the planes are opaque; and each vie ...
Types of Views 77 Figure 5.5B Counter detail drawing to a scale of 1:2. This drawing is to a greater scale and has more detail t ...
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