GB/T 18112-2000 Unified rules for CAD drawing of building construction GB/T18112-2000
Some standard content:
Engineering Construction Standard Full-text Information System
ICS01.100.30
National Standard of the People's Republic of China
GB/T18112-2000
General rules of drawings in building engineering CAD Standard
2000-05-19
State Administration of Quality and Technical Supervision
Engineering Construction Standard Full-text Information System
2000-11-01
Engineering Construction Standard Full-text Information System
GB/T18112-2000
Reference Standard
Automatic Dimensioning
CAD Drawing
CAD Engineering Drawing
Interactive Mode
Print output
Dimensional drawing
C.0..0.00...0.
Drawing size and format
Chinese characters, characters and numbers
Dimensioning and marking
Filling pattern
Three-dimensional graphics.
Projection of three-dimensional graphics
Drawing of architectural drawings...
Full-text information system of engineering construction standards
Full-text information system of engineering construction standards| |tt||Axonometric projection·
5.4 Perspective projection·
Layers and file exchange formats
Principles of layer organization
Naming rules for layer names
Naming format of layer names…
Basic operations on layers·
Graphic file exchange format
Layer name examples·
Appendix A (suggestive appendix) Layer name examples Al
Professional code
Status code||t t||Example of layer name
Architecture layer name
Electrical professional layer name
General plan layer name
Indoor interior design layer name
Heating and ventilation layer name
Water supply and drainage layer name
Equipment layer name
Structure layer name
Communication layer name
Engineering construction standard full text information system
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Engineering Construction Standard Full Text Information System
GB/T18112-2000
This standard is a highly operational standard for guiding CAD drawing and software development in the fields of housing construction and construction engineering. It is a sub-standard under the general title of "General Standard for CAD Technical Drawing" in GB/T17304-1998 "General Technical Specification for CAD" and is an important component in the CAD field.
The unified rules for CAD drawing of housing construction were developed after the release and implementation of the relevant regulations on manual drawing. They were formulated on the basis that housing construction drawing has been widely used. Any content not clearly specified or not specified in this standard shall not only comply with GBJ1-1986 "Uniform Standard for Housing Construction Drawing", but also comply with the requirements of the current relevant national standards and specifications and the drawing regulations of various relevant professions. Appendix A is a prompt appendix.
This standard is proposed by the Ministry of Construction of the People's Republic of China. This standard is under the jurisdiction of the Ministry of Construction's building engineering standard technology management unit. The drafting units of this standard are: China Academy of Building Research, China Building Standard Design Institute, Shanghai Modern Architectural Design (Group) Co., Ltd., and China Second Artillery Engineering Design Institute.
The main drafters of this standard are Fang Tianpei, Huang Rufu, Xia Daizhang, Guo Chunyu, Lin Chunzhe, Chen Guoqiang
Wang Guojian, Ban Zhuo, Jiang Li
Engineering Construction Standards Full-text Information System
Engineering Construction Standards Full-text Information System
National Standard of the People's Republic of China
Uniform rules of drawings in building engineering CAD
GB/T18112—2000
General rules of drawings in building engineering CAD1 Scope
This standard specifies the uniform rules for drawing in the process of computer-aided design (hereinafter referred to as CAD) of building construction. It mainly includes definitions, two-dimensional drawing, three-dimensional graphics, layers and file exchange formats.
This standard is applicable to CAD drawing and software development in the fields of housing construction and construction engineering, and is also applicable to the establishment, display and drawing of housing construction CAD graphics and related technical documents in computers and their peripherals. 2 Referenced standards
The provisions contained in the following standards constitute the provisions of this standard through reference in this standard. When this standard is published, the versions shown are valid. All standards will be revised, and parties using this standard should explore the possibility of using the latest versions of the following standards. GB/T14665-1998 Mechanical Engineering CAD Drawing Rules GB-T15751—1995
Technical product document Computer-aided design and drawing vocabulary (eqvISO/TR10623:1992) GB/T17450—1998 Technical drawing
Drawing lines (idtISO128-20:1996) GBJ1-1986 Unified standard for building drawing 3 Definitions
3.1 Attribute
The defined property of an entity.
Automatic dimensioning autamaticdimensioning State Administration of Quality and Technical Supervision Approved on May 19, 2000 Engineering Construction Standard Full Text Information System
Implementation on November 1, 2000
Engineering Construction Standard Full Text Information System
A function of CAD that can calculate the size of the graphic part to be marked, and automatically mark the required dimension line, dimension start and end mark, dimension boundary and annotation text. When given, it also has the characteristics of the annotation line, including length and orientation. 3.3 Block
A named sub-graphic, composed of graphic elements (graphic entities) or blocks after definition. Users can store and call (insert) it, and it is often used to make graphic libraries.
3.4CAD drawingCADdrawing
Methods and techniques for drawing and related annotation using graphic software and hardware. 3.5
CAD engineering drawingsCADengineeringdrawing Drawings drawn using CAD technology in engineering. 3.6 Drawings drawing
Drawings that represent the shape, size and structure of an engineering project and have necessary technical specifications based on projection principles or relevant regulations.
3.7 Entities entity
An element that exists objectively and can be processed independently. It is the basic information component used in drawing design drawings or engineering drawings in CAD. It is divided into geometric and non-geometric. Geometric entities represent physical shapes, such as arcs, circles, lines, points, splines, etc.; non-geometric entities represent annotations and instructions, such as technical specifications, etc.
3.8 File ile
A named collection of a group of records stored and processed as a unit. 3.9 Interactive mode interactive mode
It is an operating mode of a computer system. In this mode, the user and the system can choose a series of entry and response methods, which is similar to the form of a conversation between two people.
0 Printing output plotorprint
Use a plotter or printer to output drawings or texts, etc. 2
Engineering Construction Standard Full Text Information System
Engineering Construction Standard Full Text Information System
4 Two-dimensional drawing
The drawing format, drawing lines, Chinese characters, characters and numbers, axis lines, symbols, dimensioning and filling patterns in the CAD engineering drawings of housing construction are as follows. 4.1 Drawing format and format
The drawing format and drawing frame, title bar and countersignature bar should be made into blocks. The blocks should be arranged in a reasonable form according to the content and size of the drawings. 4.2 Drawing lines
4.2.1 Line width
The line width (d) of all line types should be selected from the following line width series according to the type and size of the drawing:
0.18mm; 0.25mm; 0.35mm; 0.5mm; 0.7mm; 1.0mm; 1.4mm; 2.0mm.
The common ratio of this line width series is 1V2 (~1:1.4). The width ratio of thick, medium and thin lines is 4:2:1. In the same drawing, the width of the same type of lines is consistent. Note: If necessary, 0.13mm line width. 4.2.2 Line names and line structure
The line names and line structure in the building construction CAD engineering drawings are shown in Table 1. Table 1 Line names and line structure
Line name
Double-point line
Break line
Engineering construction standard full-text information system
Line structure
Engineering construction standard full-text information system
The selection of the dimensions of each part of the break line should be as follows, see Figure 1. The size of the Z-type in the break line is shown in Figure 1 a); when one Z-type is drawn in the break line, see Figure 1 b), where L=(L-7.5a)/2;
When two Z-types are drawn in the break line, see Figure 1 c), where L,=0.5L-7.5d,L=0.5Lz.
Figure 1 Break Line
4.2.4 Dashed Line
The selection of the dimensions of each part of the dashed line, see Figure 2, should be as follows: c)
Specify the length of the short dashed line L and the interval length L, the number of short dashed lines in a dashed line n (n≥0):
n = int(L/(La+ L))-1
Note: int means rounding, for example, 1.54 is 1. The length of the dashed lines at both ends L=（L-nL（n+1)/L）/2La and the length of L should be L=12d, L-3d. If the L of a dashed line is less than L+L, L is only drawn as a solid line. 4.2.5 Dotted Line
The selection of the dimensions of each part of the dotted line, see Figure 3, should be as follows: specify the length of the long dotted line segment L and the length of the interval between two dotted line segments 4
Engineering Construction Standard Full-text Information System
Engineering Construction Standard Full-text Information System
L, the number of dotted line segments in a dotted line n (n≥0): n = int(L/(La+ L))-1
The length of the lines at both ends L=（LnL（n+1)/L)/2The point in the interval is located in the middle.
The length of L and L should be L=12d, L6.5d. The length of the point in the interval is 0.5d
If the length L of a dotted line is less than L+L, it is drawn as a solid line. Figure 2 Dashed Line
Figure 3 Dotted Line
Double Dotted Line
The selection of the dimensions of each part of the double dotted line is shown in Figure 4 and should be in the following manner: 0.5d
Figure 4 Double Dotted Line
Specify the length of the dotted line segment L and the interval length L between two dotted line segments. The number of dotted line segments in a double dotted line n (>0): 5
Engineering Construction Standard Full-text Information System
Engineering Construction Standard Full-text Information System
n=int(L/(La+L))-1
The length of the two ends of the line L=（L—nLa（n+1)/L)/2The lengths of the two points in the interval are 0.5d respectively, and the positions are shown in Figure 4. The lengths of La and, should be La=12d,=10d. If the length L of the double dotted line is less than L+L, it is drawn as a solid line. 4.2.7 Wave line
The selection of the dimensions of each part of the wave line, see Figure 5, should be as follows: specify the chord length La of the arc, the number of waves in a wave line n (n>0): n=int(L/La)-1
Then correct the chord length, the corrected chord length: L*=La+(L-nLa)/nThe arc height h=（L,*gα)/2
The minimum length of La should be La=12d, preferably α=22. If the length of the wave line L is less than La, the arc height h=（Ltg30）/4, draw two arcs.
5 Wave Line
4.2.8 Intersection of Discontinuous Lines
Figure 6 Intersection of Discontinuous Lines
Engineering Construction Standard Full Text Information System
Engineering Construction Standard Full Text Information System
When a discontinuous line intersects with another discontinuous line or with a continuous line, the lines in the drawing should intersect on the line segment as much as possible, as shown in Figure 6.
4.3 Chinese Characters, Characters and Numbers
4.3.1 The Chinese characters, characters and numbers in the drawing should be arranged neatly, clearly and correctly, and the sizes should be coordinated and consistent. When Chinese characters, characters and numbers are written side by side, the height of Chinese characters is slightly higher than that of characters and numbers.
4.3.2 Chinese characters should adopt the vector Chinese characters specified in the national standards. The standards and file names are shown in Table 2.
Table 2 Vector Chinese Characters
Long Song
Single Line Song
Song
National Standard
GB/T13362.4~13362.5—1992
GB/T13844—1993
GB/T13845—1993
GB/T13846—1993||tt ||GB/T13847—1993
GB/T13848—1993
Shape file name
4.3.3 Chinese character encoding shall adopt GB2312-1980 "Basic set of Chinese character coded character set for information exchange" and GB13000.1-1993 "Information technology universal multi-octet coded character set (UCS) Part 1: Architecture and basic multilingual plane". 4.3.4 The height of Chinese characters shall not be less than 2.5mm, and the height of letters and numbers shall not be less than 1.8mm.
4.3.5 Chinese characters in figures and descriptions shall adopt Changfangsong font. Chinese characters in the title, album cover, catalog, figure name, design unit name, project name, topographic map, etc. in the title bar can choose the fonts in Table 2.
4.3.6 The minimum line spacing of Chinese characters shall not be less than 2mm, and the minimum line spacing of characters and numbers shall not be less than 1mm. When Chinese characters are mixed with characters and numbers, the minimum line spacing, etc. should be used according to the regulations of Chinese characters.
4.3.7 Common characters and codes required in various disciplines that are not included in Table 2 should be established in accordance with relevant national standards to establish corresponding shape files. 4.4 Axis
4.4.1 The axis consists of a positioning axis and a positioning axis mark. 4.4.2 The positioning axis should be drawn with fine dotted lines. 4.4.3 The positioning axis mark has the following methods: general positioning axis mark, see a) and b) in Figure 7; positioning axis mark of general detailed drawing, see c) in Figure 7; positioning axis mark of additional axis, see d) and e) in Figure 7; positioning axis mark of partition axis, see f) in Figure 7; positioning axis mark of multiple references in detailed drawing, see g), h), i) and j) in Figure 7. 6
Axis Marking
4.4.4 The positioning axis shall not enter the circle, but may be connected to the circle, and the center of the circle shall be on the extension line of the positioning axis; one end point of the positioning axis in the lead-out mark may be connected to the lead-out point of the lead-out line, the lead-out line shall be connected to the circle, and the center of the circle shall be on the extension line of the lead-out line.
4.4.5 The positioning point, character height (h), and character width adjustment coefficient of the axis number in the circle of the positioning axis mark should comply with the provisions of Table 3, Table 4, Table 5 and Table 6. 4.5 Symbols
4.5.1CAD drawing software shall provide symbols such as section cutting, section (cross-section) cutting, index, lead-out line, numbering, detailed drawing, symmetry, connection, compass and slope. 4.5.2 Symbols are often used repeatedly. To improve the efficiency of drawing, it is advisable to use a specific program. After entering the positioning point (one or more) and related parameters, the required symbols are automatically generated. See Table 8
Engineering Construction Standard Full Text Information System54 is 1. The length of the lines at both ends L = (L-nL (n + 1) / L) / 2La and the length of L should be taken as L = 12d, L-3d. If the L of a dotted line is less than L + L, L is drawn as a solid line only. 4.2.5 Dotted Line
The selection of the dimensions of each part of the dotted line, see Figure 3, should be as follows: specify the length of the long dotted line segment L and the length of the interval between two dotted line segments 4
Engineering Construction Standard Full-text Information System
Engineering Construction Standard Full-text Information System
L, the number of dotted line segments in a dotted line n (n ≥ 0): n = int(L/(La + L))-1
The length of the lines at both ends L = (LnL (n + 1) / L) / 2The point in the interval is located in the middle.
L and the length of L should be taken as L = 12d, L6.5d. The length of the points in the interval is 0.5d
If the length L of a dotted line is less than L + L, it is drawn as a solid line. Figure 2 Dashed Line
Figure 3 Dotted Line
Double Dotted Line
The selection of the dimensions of each part of the double dotted line, see Figure 4, should be as follows: 0.5d
Figure 4 Double Dotted Line
Specify the length of the dotted line segment L and the interval length L between the two dotted line segments, the number of dotted line segments in a double dotted line n (> 0): 5
Engineering Construction Standard Full-text Information System
Engineering Construction Standard Full-text Information System
n=int(L/(La+L))-1
The length of the lines at both ends L=（L—nLa（n+1)/L)/2The lengths of the two points in the interval are 0.5d respectively, and the positions are shown in Figure 4. The lengths of La and, should be taken as La=12d,=10d. If the length L of the double-point dashed line is less than L+L, it is drawn as a solid line. 4.2.7 Wave line
The selection of the dimensions of each part of the wave line, see Figure 5, should be as follows: Specify the chord length La of the arc, the number of waves in a wave line n (n>0): n=int(L/La)-1
Then correct the chord length, the corrected chord length: L*=La+(L-nLa)/nThe arc height h=（L,*gα)/2
The minimum length of La should be taken as La=12d, preferably α=22. If the length L of the wave line is less than La, the arc height h=（Ltg30）/4, and two arcs are drawn.
5 Wave Line
4.2.8 Intersection of Discontinuous Lines
Figure 6 Intersection of Discontinuous Lines
Engineering Construction Standard Full Text Information System
Engineering Construction Standard Full Text Information System
When a discontinuous line intersects with another discontinuous line or with a continuous line, the lines in the drawing should intersect on the line segment as much as possible, as shown in Figure 6.
4.3 Chinese Characters, Characters and Numbers
4.3.1 The Chinese characters, characters and numbers in the drawing should be arranged neatly, clearly and correctly, and the sizes should be coordinated and consistent. When Chinese characters, characters and numbers are written side by side, the height of Chinese characters is slightly higher than that of characters and numbers.
4.3.2 Chinese characters should adopt the vector Chinese characters specified in the national standards. The standards and file names are shown in Table 2.
Table 2 Vector Chinese Characters
Long Song
Single Line Song
Song
National Standard
GB/T13362.4~13362.5—1992
GB/T13844—1993
GB/T13845—1993
GB/T13846—1993||tt ||GB/T13847—1993
GB/T13848—1993
Shape file name
4.3.3 Chinese character encoding shall adopt GB2312-1980 "Basic set of Chinese character coded character set for information exchange" and GB13000.1-1993 "Information technology universal multi-octet coded character set (UCS) Part 1: Architecture and basic multilingual plane". 4.3.4 The height of Chinese characters shall not be less than 2.5mm, and the height of letters and numbers shall not be less than 1.8mm.
4.3.5 Chinese characters in figures and descriptions shall adopt Changfangsong font. Chinese characters in the title, album cover, catalog, figure name, design unit name, project name, topographic map, etc. in the title bar can choose the fonts in Table 2.
4.3.6 The minimum line spacing of Chinese characters shall not be less than 2mm, and the minimum line spacing of characters and numbers shall not be less than 1mm. When Chinese characters are mixed with characters and numbers, the minimum line spacing, etc. should be used according to the regulations of Chinese characters.
4.3.7 Common characters and codes required in various disciplines that are not included in Table 2 should be established in accordance with relevant national standards to establish corresponding shape files. 4.4 Axis
4.4.1 The axis consists of a positioning axis and a positioning axis mark. 4.4.2 The positioning axis should be drawn with fine dotted lines. 4.4.3 The positioning axis mark has the following methods: general positioning axis mark, see a) and b) in Figure 7; positioning axis mark of general detailed drawing, see c) in Figure 7; positioning axis mark of additional axis, see d) and e) in Figure 7; positioning axis mark of partition axis, see f) in Figure 7; positioning axis mark of multiple references in detailed drawing, see g), h), i) and j) in Figure 7. 6
Axis Marking
4.4.4 The positioning axis shall not enter the circle, but may be connected to the circle, and the center of the circle shall be on the extension line of the positioning axis; one end point of the positioning axis in the lead-out mark may be connected to the lead-out point of the lead-out line, the lead-out line shall be connected to the circle, and the center of the circle shall be on the extension line of the lead-out line.
4.4.5 The positioning point, character height (h), and character width adjustment coefficient of the axis number in the circle of the positioning axis mark should comply with the provisions of Table 3, Table 4, Table 5 and Table 6. 4.5 Symbols
4.5.1CAD drawing software shall provide symbols such as section cutting, section (cross-section) cutting, index, lead-out line, numbering, detailed drawing, symmetry, connection, compass and slope. 4.5.2 Symbols are often used repeatedly. To improve the efficiency of drawing, it is advisable to use a specific program. After entering the positioning point (one or more) and related parameters, the required symbols are automatically generated. See Table 8
Engineering Construction Standard Full Text Information System54 is 1. The length of the lines at both ends L = (L-nL (n + 1) / L) / 2La and the length of L should be taken as L = 12d, L-3d. If the L of a dotted line is less than L + L, L is drawn as a solid line only. 4.2.5 Dotted Line
The selection of the dimensions of each part of the dotted line, see Figure 3, should be as follows: specify the length of the long dotted line segment L and the length of the interval between two dotted line segments 4
Engineering Construction Standard Full-text Information System
Engineering Construction Standard Full-text Information System
L, the number of dotted line segments in a dotted line n (n ≥ 0): n = int(L/(La + L))-1
The length of the lines at both ends L = (LnL (n + 1) / L) / 2The point in the interval is located in the middle.
L and the length of L should be taken as L = 12d, L6.5d. The length of the points in the interval is 0.5d
If the length L of a dotted line is less than L + L, it is drawn as a solid line. Figure 2 Dashed Line
Figure 3 Dotted Line
Double Dotted Line
The selection of the dimensions of each part of the double dotted line, see Figure 4, should be as follows: 0.5d
Figure 4 Double Dotted Line
Specify the length of the dotted line segment L and the interval length L between the two dotted line segments, the number of dotted line segments in a double dotted line n (> 0): 5
Engineering Construction Standard Full-text Information System
Engineering Construction Standard Full-text Information System
n=int(L/(La+L))-1
The length of the lines at both ends L=（L—nLa（n+1)/L)/2The lengths of the two points in the interval are 0.5d respectively, and the positions are shown in Figure 4. The lengths of La and, should be taken as La=12d,=10d. If the length L of the double-point dashed line is less than L+L, it is drawn as a solid line. 4.2.7 Wave line
The selection of the dimensions of each part of the wave line, see Figure 5, should be as follows: Specify the chord length La of the arc, the number of waves in a wave line n (n>0): n=int(L/La)-1
Then correct the chord length, the corrected chord length: L*=La+(L-nLa)/nThe arc height h=（L,*gα)/2
The minimum length of La should be taken as La=12d, preferably α=22. If the length L of the wave line is less than La, the arc height h=（Ltg30）/4, and two arcs are drawn.
5 Wave Line
4.2.8 Intersection of Discontinuous Lines
Figure 6 Intersection of Discontinuous Lines
Engineering Construction Standard Full Text Information System
Engineering Construction Standard Full Text Information System
When a discontinuous line intersects with another discontinuous line or with a continuous line, the lines in the drawing should intersect on the line segment as much as possible, as shown in Figure 6.
4.3 Chinese Characters, Characters and Numbers
4.3.1 The Chinese characters, characters and numbers in the drawing should be arranged neatly, clearly and correctly, and the sizes should be coordinated and consistent. When Chinese characters, characters and numbers are written side by side, the height of Chinese characters is slightly higher than that of characters and numbers.
4.3.2 Chinese characters should adopt the vector Chinese characters specified in the national standards. The standards and file names are shown in Table 2.
Table 2 Vector Chinese Characters
Long Song
Single Line Song
Song
National Standard
GB/T13362.4~13362.5—1992
GB/T13844—1993
GB/T13845—1993
GB/T13846—1993||tt ||GB/T13847—1993
GB/T13848—1993
Shape file name
4.3.3 Chinese character encoding shall adopt GB2312-1980 "Basic set of Chinese character coded character set for information exchange" and GB13000.1-1993 "Information technology universal multi-octet coded character set (UCS) Part 1: Architecture and basic multilingual plane". 4.3.4 The height of Chinese characters shall not be less than 2.5mm, and the height of letters and numbers shall not be less than 1.8mm.
4.3.5 Chinese characters in figures and descriptions shall adopt Changfangsong font. Chinese characters in the title, album cover, catalog, figure name, design unit name, project name, topographic map, etc. in the title bar can choose the fonts in Table 2.
4.3.6 The minimum line spacing of Chinese characters shall not be less than 2mm, and the minimum line spacing of characters and numbers shall not be less than 1mm. When Chinese characters are mixed with characters and numbers, the minimum line spacing, etc. should be used according to the regulations of Chinese characters.
4.3.7 Common characters and codes required in various disciplines that are not included in Table 2 should be established in accordance with relevant national standards to establish corresponding shape files. 4.4 Axis
4.4.1 The axis consists of a positioning axis and a positioning axis mark. 4.4.2 The positioning axis should be drawn with fine dotted lines. 4.4.3 The positioning axis mark has the following methods: general positioning axis mark, see a) and b) in Figure 7; positioning axis mark of general detailed drawing, see c) in Figure 7; positioning axis mark of additional axis, see d) and e) in Figure 7; positioning axis mark of partition axis, see f) in Figure 7; positioning axis mark of multiple references in detailed drawing, see g), h), i) and j) in Figure 7. 6
Axis Marking
4.4.4 The positioning axis shall not enter the circle, but may be connected to the circle, and the center of the circle shall be on the extension line of the positioning axis; one end point of the positioning axis in the lead-out mark may be connected to the lead-out point of the lead-out line, the lead-out line shall be connected to the circle, and the center of the circle shall be on the extension line of the lead-out line.
4.4.5 The positioning point, character height (h), and character width adjustment coefficient of the axis number in the circle of the positioning axis mark should comply with the provisions of Table 3, Table 4, Table 5 and Table 6. 4.5 Symbols
4.5.1CAD drawing software shall provide symbols such as section cutting, section (cross-section) cutting, index, lead-out line, numbering, detailed drawing, symmetry, connection, compass and slope. 4.5.2 Symbols are often used repeatedly. To improve the efficiency of drawing, it is advisable to use a specific program. After entering the positioning point (one or more) and related parameters, the required symbols are automatically generated. See Table 8
Engineering Construction Standard Full Text Information System8 Intersection of non-continuous linesbzxZ.net
Figure 6 Intersection of non-continuous lines
Engineering Construction Standards Full Text Information System
Engineering Construction Standards Full Text Information System
When non-continuous lines intersect with non-continuous lines or with continuous lines, the lines in the drawing should intersect on the line segments as much as possible, as shown in Figure 6.
4.3 Chinese characters, characters and numbers
4.3.1 Chinese characters, characters and numbers in the drawings should be arranged neatly, clearly and correctly, and the sizes should be coordinated and consistent. When Chinese characters, characters and numbers are written side by side, the height of Chinese characters is slightly higher than that of characters and numbers.
4.3.2 Chinese characters should adopt the vector Chinese characters specified in the national standards. The standards and file names are shown in Table 2.
Table 2 Vector Chinese Characters
Long Song
Single Line Song
Song
National Standard
GB/T13362.4~13362.5—1992
GB/T13844—1993
GB/T13845—1993
GB/T13846—1993||tt ||GB/T13847—1993
GB/T13848—1993
Shape file name
4.3.3 Chinese character encoding shall adopt GB2312-1980 "Basic set of Chinese character coded character set for information exchange" and GB13000.1-1993 "Information technology universal multi-octet coded character set (UCS) Part 1: Architecture and basic multilingual plane". 4.3.4 The height of Chinese characters shall not be less than 2.5mm, and the height of letters and numbers shall not be less than 1.8mm.
4.3.5 Chinese characters in figures and descriptions shall adopt Changfangsong font. Chinese characters in the title, album cover, catalog, figure name, design unit name, project name, topographic map, etc. in the title bar can choose the fonts in Table 2.
4.3.6 The minimum line spacing of Chinese characters shall not be less than 2mm, and the minimum line spacing of characters and numbers shall not be less than 1mm. When Chinese characters are mixed with characters and numbers, the minimum line spacing, etc. should be used according to the regulations of Chinese characters.
4.3.7 Common characters and codes required in various disciplines that are not included in Table 2 should be established in accordance with relevant national standards to establish corresponding shape files. 4.4 Axis
4.4.1 The axis consists of a positioning axis and a positioning axis mark. 4.4.2 The positioning axis should be drawn with fine dotted lines. 4.4.3 The positioning axis mark has the following methods: general positioning axis mark, see a) and b) in Figure 7; positioning axis mark of general detailed drawing, see c) in Figure 7; positioning axis mark of additional axis, see d) and e) in Figure 7; positioning axis mark of partition axis, see f) in Figure 7; positioning axis mark of multiple references in detailed drawing, see g), h), i) and j) in Figure 7. 6
Axis Marking
4.4.4 The positioning axis shall not enter the circle, but may be connected to the circle, and the center of the circle shall be on the extension line of the positioning axis; one end point of the positioning axis in the lead-out mark may be connected to the lead-out point of the lead-out line, the lead-out line shall be connected to the circle, and the center of the circle shall be on the extension line of the lead-out line.
4.4.5 The positioning point, character height (h), and character width adjustment coefficient of the axis number in the circle of the positioning axis mark should comply with the provisions of Table 3, Table 4, Table 5 and Table 6. 4.5 Symbols
4.5.1CAD drawing software shall provide symbols such as section cutting, section (cross-section) cutting, index, lead-out line, numbering, detailed drawing, symmetry, connection, compass and slope. 4.5.2 Symbols are often used repeatedly. To improve the efficiency of drawing, it is advisable to use a specific program. After entering the positioning point (one or more) and related parameters, the required symbols are automatically generated. See Table 8
Engineering Construction Standard Full Text Information System8 Intersection of non-continuous lines
Figure 6 Intersection of non-continuous lines
Engineering Construction Standards Full Text Information System
Engineering Construction Standards Full Text Information System
When non-continuous lines intersect with non-continuous lines or with continuous lines, the lines in the drawing should intersect on the line segments as much as possible, as shown in Figure 6.
4.3 Chinese characters, characters and numbers
4.3.1 Chinese characters, characters and numbers in the drawings should be arranged neatly, clearly and correctly, and the sizes should be coordinated and consistent. When Chinese characters, characters and numbers are written side by side, the height of Chinese characters is slightly higher than that of characters and numbers.
4.3.2 Chinese characters should adopt the vector Chinese characters specified in the national standards. The standards and file names are shown in Table 2.
Table 2 Vector Chinese Characters
Long Song
Single Line Song
Song
National Standard
GB/T13362.4~13362.5—1992
GB/T13844—1993
GB/T13845—1993
GB/T13846—1993||tt ||GB/T13847—1993
GB/T13848—1993
Shape file name
4.3.3 Chinese character encoding shall adopt GB2312-1980 "Basic set of Chinese character coded character set for information exchange" and GB13000.1-1993 "Information technology universal multi-octet coded character set (UCS) Part 1: Architecture and basic multilingual plane". 4.3.4 The height of Chinese characters shall not be less than 2.5mm, and the height of letters and numbers shall not be less than 1.8mm.
4.3.5 Chinese characters in figures and descriptions shall adopt Changfangsong font. Chinese characters in the title, album cover, catalog, figure name, design unit name, project name, topographic map, etc. in the title bar can choose the fonts in Table 2.
4.3.6 The minimum line spacing of Chinese characters shall not be less than 2mm, and the minimum line spacing of characters and numbers shall not be less than 1mm. When Chinese characters are mixed with characters and numbers, the minimum line spacing, etc. should be used according to the regulations of Chinese characters.
4.3.7 Common characters and codes required in various disciplines that are not included in Table 2 should be established in accordance with relevant national standards to establish corresponding shape files. 4.4 Axis
4.4.1 The axis consists of a positioning axis and a positioning axis mark. 4.4.2 The positioning axis should be drawn with fine dotted lines. 4.4.3 The positioning axis mark has the following methods: general positioning axis mark, see a) and b) in Figure 7; positioning axis mark of general detailed drawing, see c) in Figure 7; positioning axis mark of additional axis, see d) and e) in Figure 7; positioning axis mark of partition axis, see f) in Figure 7; positioning axis mark of multiple references in detailed drawing, see g), h), i) and j) in Figure 7. 6
Axis Marking
4.4.4 The positioning axis shall not enter the circle, but may be connected to the circle, and the center of the circle shall be on the extension line of the positioning axis; one end point of the positioning axis in the lead-out mark may be connected to the lead-out point of the lead-out line, the lead-out line shall be connected to the circle, and the center of the circle shall be on the extension line of the lead-out line.
4.4.5 The positioning point, character height (h), and character width adjustment coefficient of the axis number in the circle of the positioning axis mark should comply with the provisions of Table 3, Table 4, Table 5 and Table 6. 4.5 Symbols
4.5.1CAD drawing software shall provide symbols such as section cutting, section (cross-section) cutting, index, lead-out line, numbering, detailed drawing, symmetry, connection, compass and slope. 4.5.2 Symbols are often used repeatedly. To improve the efficiency of drawing, it is advisable to use a specific program. After entering the positioning point (one or more) and related parameters, the required symbols are automatically generated. See Table 8
Engineering Construction Standard Full Text Information System
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