Blueprint Reading
38 Chapter 3 AutoCAD, these line-boldness conventions are replicated by configuring each line color as certain line widths. Bor ...
Understanding Line Types 39 Figure 3.1 Major types of line used in construction drawings. Line weights are clearly impacted by s ...
40 Chapter 3 Section Lines. Section lines (also called cross-hatch lines) indicate the cut surface in a section view. They usual ...
Understanding Line Types 41 Figure 3.3A Hidden lines represent invisible edges and surfaces—in this case, blocking hidden behind ...
42 Chapter 3 The long dashes of center lines may vary in length, depending upon the size of the drawing. Center lines should beg ...
Understanding Line Types 43 used to represent partially drawn views and partial sections of symmetrical parts. Symmetrical-view ...
44 Chapter 3 Dimension Lines. Dimension lines are solid lines similar in weight to extension lines that are used to indicate len ...
Understanding Line Types 45 Different types of arrowheads are used in dimensioning. The point or tip of the arrowhead touches th ...
46 Chapter 3 Phantom Lines. Phantom lines are thin, dark lines that consist of a long dash and two short dashes. They look like ...
Understanding Line Types 47 Cutting-Plane and Viewing-Plane Lines. These are very prominent broken lines (usually two dots and a ...
48 Chapter 3 Figure 3.8A,B Examples of leader lines terminating with arrowheads. A B ...
Understanding Line Types 49 Break Lines. These are fine straight lines with zig-zag-zig offsets to show a break or termination o ...
50 Chapter 3 Figure 3.9A,B Examples of cutting-plane lines. A B ...
Understanding Line Types 51 Figure 3.10A,B Examples of the use of break lines. A B ...
52 Chapter 3 Figure 3.11 Illustration of a model showing the topography of the site. ...
4 Understanding Dimensions 4.1 TYPES OF DIMENSIONS. A dimension is a numerical value expressed in an appropriate unit of measure ...
54 Chapter 4 of dimensions are typically composed of two parts: the nominal value, which is the “ideal” size of the fea- ture, a ...
Understanding Dimensions 55 Dimension lines are generally continuous with the number being centered and slightly above the line ...
56 Chapter 4 Where grid lines are used on a drawing (such as on a modular drawing), it is not necessary to di- mension all the ...
Understanding Dimensions 57 Figure 4.2B A drawing showing dimension lines terminating at the extension lines with arrows at the ...
«
1
2
3
4
5
6
7
8
9
10
»
Free download pdf