1 General Provisions
1.0.1 This standard is specially developed for the purpose of unifying building drawing rules, guaranteeing drawing quality, boosting drawing efficiency, realizing distinct and concise drawings, meeting the requirements of design, construction, examination and archiving as well as adapting the requirements of engineering construction.
1.0.2 This standard is the basic requirements for building drawings and is applicable to the drawing of general drawing, building, structure, water supply and drainage, heating, ventilation and air conditioning and electrical, etc. professions.
1.0.3 This standard is applicable to the patterns drawn by the following drawing methods:
1 Computerized drawing;
2 Manual drawing.
1.0.4 This standard is applicable to the following project drawings of various professions:
1 Design drawing and completion drawing in each stage of constructed, renovated or extended projects;
2 Surveyed drawings of the former buildings and structures as well as general plan;
3 General design drawing and standard design drawing.
1.0.5 The building drawings shall not only comply with those sopecified in this standard, but also shall meet the specifications in the national current relevant standards.
2 Terms
2.0.1 Drawing format
The drawing format refers to the drawing composed of drawing width and length.
2.0.2 Chart
The chart refers to a kind of geometric drawing connected with any method between starting point and end point, and its shape may be straight line or curve, continuous and discontinuous line.
2.0.3 Font
The font refers to the stylel type of the letter, which is also named as chirography.
2.0.4 Scale
The scale refers to the linear dimension ratio of the corresponding element for figure and physical object.
2.0.5 View
It refers to the projection obtained through projecting the object to projection plane according to orthography.
2.0.6 Axonometric drawing
It refers to the figure obtained through projecting the object and the rectangular coordinate system which determines this object along the direction not parallel to any coordinate plane to one projection plane with parallel projection method.
2.0.7 Perspective drawing
It refers to the image drawn according to perspective principle with near-big and far-small characteristic so as to express building design intention.
2.0.8 Elevation
It refers to the vertical height from the ground (floor) as the zero point (original bench mark) to reference plane by taking a certain horizontal plane as the reference plane.
2.0.9 Project sheet
It refers to the figure drawn in the paper medium according to the projection principle or the relevant requirements and expressing the shape, size and structure characteristics of a project through line, symbol, textual description and other graphic element.
2.0.10 Cornputer aided drawing file
It refers to the data file drawn by computer aided drawing technology and representing various design contents by recording and storing the project sheet.
2.0.11 Computer aided drawing folder
It refers to the logical space for storing computer aided drawing file in disk, which is also referred to as computer aided drawing catalogue.
2.0.12 Synergitic design
It refers to establishing cooperative design environment through computer network and CAD technology to make each member of the design team surround the common design goal and object, interactively complete the design task according to respective work division, realize the optimization configuration and sharing of the design resource and finally obtain the design achievement document meeting the project requirements.
2.0.13 Reference of computer aided drawing file
It refers to a kind of computer aided drawing technology referencing in the current computer aided drawing file and displaying partial or all data content of other computer aided drawing files (referenced files). The current computer aided drawing file only records the storage location and file name of the referenced file, and does not record the specific data content of the referenced file and will be synchronously updated with the revision of the referenced file.
2.0.14 Layer
It refers to a kind of organization structure of the relevant graphic element data in the computer aided drawing file. The entity belonging to the identical layer is provided with uniform color, line type, line width and state properties.
3 Size Specification and Compiling Sequence of Drawings
3.1 Sheet Size of Engineering Drawing
3.1.1 The drawing format and drawing frame dimension shall be in accordance with those specified in Table 3.1.1 and the format in Figure 3.2.1-1~Figure 3.2.1-4.
Table 3.1.1 Size and Drawing frame Dimension (mm)
Size code
Dimension code A0 A1 A2 A3 A4
b×l 841×1189 594×841 420×594 297×420 210×297
c 10 5
A 25
Note: b is the short side dimension, l is the long side dimension, c is the width between drawing frame line and size line, and a is the width between drawing frame line and binding side.
3.1.2 For the drawing to be microcopied, one side shall be accompanied by a section of accurate metric scale and four sides shall be accompanied by alignment mark; the total length of the metric scale shall be 100mm and the subdivision shall be 10mm. The alignment mark shall be drawn at the midpoint of each side length of the inner drawing frame with line width 0.35mm, and shall stretch into the inner frame side and distance 5mm from frame outside. The line section of the alignment mark shall adopt the middle within l1and b1 range.
3.1.3 The short side dimension of the drawing shall not be lengthened; the long side dimension of A0~A3 size may be lengthened but shall be in accordance with those specified in Table 3.1.3.
Table 3.1.3 Lengthened Long Side Dimension of Drawing (mm)
Size code Long side dimension Lengthened long side dimension
A0 1189 1486(A0＋1/4l) 1635(A0＋3/8l) 1783(A0＋1/2l)
1932(A0＋5/8l) 2080(A0＋3/4l) 2230(A0＋7/8l)
2378(A0＋l)
A1 841 1051(A1＋1/4l) 1261(A1＋1/2l) 147l(A1＋3/4l)
1682(A1＋l) 1892(A1＋5/4l) 2102(A1＋3/2l)
A2 594 743(A2＋l/41)891(A2＋1/2l) 1041(A2＋3/4l)
1189(A2＋l) 1338(A2＋5/41) 1486(A2＋3/2l)
1635(A2＋7/4l) 1783(A2＋2l) 1932(A2＋9/4l)
2080(A2＋5/2l)
A3 420 630(A3＋1/2l) 841(A3＋l) 1051(A3＋3/2l)
1261(A3＋2l) 1471(A3＋5/2l) 1682(A3＋3l)
1892(A3＋7/2l)
Note: For the drawing with special needs, the size of b×l 841mm×891mm and 1189mm×1261mm may be adopted.
3.1.4 The drawing shall be of horizontal type if taking the short side as the vertical side and shall be of vertical type if taking the short side as the horizontal side. A0~A3 drawing should be of horizontal use; if necessary, it may also be of vertical use.
3.1.5 In one engineering design, the drawing used by each profession should not be more than two kinds of sizes, excluding catalogue and A4 size adopted by table.
3.2 Title Block
3.2.1 The drawing shall be provided with title block, drawing frame line, size line, binding side line and alignment mark. The position of title block and binding side of the drawing shall meet the following requirements:
1 The drawing with horizontal use shall be arranged according to the type of Figure 3.2.1-1 and Figure 3.2.1-2;
2 The drawing with vertical use shall be arranged according to the type of Figure 3.2.1-3 and Figure 3.2.1-4.
Figure 3.2.1-1 A0~A3 Horizontal Size (1)
Figure 3.2.1-2 A0~A3 Horizontal Size (2)
Figure 3.2.1-3 A0~A4 Vertical Size (1)
Figure 3.2.1-4 A0~A4 Vertical Size (2)
3.2.2 The title block shall be in accordance with those specified in Figure 3.2.2-1 and Figure 3.2.2-2, and the dimension, format and zoning shall be determined according to project demand. The signature column shall include real name row and signature row and shall meet the following requirements:
Figure 3.2.2-1 Title Block (1)
Figure 3.2.2-2 Title Block (2)
1 In the title block of foreign project, the Chinese inferior of each main content shall be accompanied by version; the upside or left of the design organization shall be added with "the People's Republic of China" type style;
2 The electronic signature and certification use in computer aided drawing file shall be in accordance with those specified in the national relevant electronic signature law.
3.3 Setting Order of Sheets
3.3.1 The project sheet shall be set according to the profession order and shall be list of drawings, general drawing, architectural drawing, structure drawing, water supply and drainage drawing, heating, ventilation and air conditioning drawing and electrical drawing.
3.3.2 The drawings of various professions shall be classified and ordered according to the primary and secondary relation as well as logical relation of the drawing content.
Contents
1 General Provisions
2 Terms
3 Size Specification and Compiling Sequence of Drawings
3.1 Sheet Size of Engineering Drawing
3.2 Title Block
3.3 Setting Order of Sheets
4 Chart
5 Font
6 Scale
7 Symbol
7.1 Cutting Symbol
7.2 Index Symbol and Detail Symbol
7.3 Leader Line
7.4 Other Symbols
8 Location Axis Grid
9 Legends of Common Building Materials
9.1 General Requirement
9.2 Legends of Common Building Materials
10 Drawing Method
10.1 Projection Method
10.2 View Layout
10.3 Section and Profile
10.4 Simplified Drawing Method
10.5 Axonometric Drawing
10.6 Perspective Drawing
11 Dimension Indications
11.1 Extension Line, Dimension Line and Arrowhead
11.2 Dimension Text
11.3 Dimension Arrangement and Layout
11.4 Radial Dimension for Circle and Sphere
11.5 Angular and Arc Length Dimension
11.6 For Sheet Thickness, Square, Slope and Non-round Curve etc
11.7 Simplified Labeling of Dimensions
11.8 Elevation
12 CAD Documents
12.1 General Requirement
12.2 Numbering of Engineering Drawings
12.3 Naming of CAD Files
12.4 Computer Aided Drawing Folder
12.5 Use and Management of CAD Files
12.6 Synergetic Design and CAD Files
13 Layers for CAD File
14 CAD Conventions
Appendix A Examples of Common Engineering Sheet Coding and CAD File Naming
Appendix B Common Layer Naming Examples
Explanation of Wording in This Standard
List of Quoted Standards
