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According to the requirements of Document JIANBIAO [2014] No.189 issued by the Ministry of Housing and Urban-Rural Development of the People's Republic of China - Notice on printing and distributing the development and revision plan on engineering construction standards and codes in 2015, the drafting group of standard revised this standard through the extensive investigation and study, careful summarization of practical experience and reference to relevant international and foreign advanced standards and on the basis of widely soliciting for opinions.
The main technical contents of this standard are: 1. General provisions; 2. Terms; 3. Drawing format and compiling sequence of drawings; 4. Chart; 5. Front; 6. Scale; 7. Symbols; 8. Location axis; 9. Legends of common building materials; 10. Drawing methods; 11. Dimensions; 12. CAD files; 13. Layers of CAD files; 14. CAD conventions; 15. Synergistic design.
The main technical contents in the revision of this standard are: 1. The contents of synergistic design are added; 2. The contents of CAD files, layers of CAD files, CAD conventions, etc. are modified and supplemented.
The Ministry of Housing and Urban-Rural Development of the People's Republic of China is in charge of the administration of this standard, and China Institute of Building Standard Design & Research Co., Ltd. is responsible for the explanation of specific technical contents. During the process of implementing this specification, the relevant opinions and advice, whenever necessary, can be posted or passed on to China Institute of Building Standard Design & Research Co., Ltd. (Address: Building 2, Interwest Business Center, No.9, Shou Ti South Road, Haidian District, Beijing, 100048, China).
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Contents
1 General provisions 1
2 Terms 2
3 Drawing format and compiling sequence of drawings 5
3.1 Drawing format 5
3.2 Title block 6
3.3 Compiling sequence of drawings 12
4 Chart 13
5 Font 15
6 Scale 17
7 Symbols 18
7.1 Cutting symbols 18
7.2 Index symbols and detail symbols 20
7.3 Leader line 22
7.4 Other symbols 24
8 Location axis 26
9 Legends of common building materials 30
9.1 General requirements 30
9.2 Legends for common building materials 31
10 Drawing methods 34
10.1 Projection method 34
10.2 View layout 35
10.3 Sectional view and cross-sectional view 36
10.4 Simplified drawing method 39
10.5 Axonometric drawing 41
10.6 Perspective drawing 44
11 Dimensions 45
11.1 Dimension boundary line, dimension line and start and end symbols of a dimension 45
11.2 Dimension figures 46
11.3 Dimension arrangement and layout 47
11.4 Designation of dimensions for radius, diameter and sphere 48
11.5 Designation of angle, radian and arc length 50
11.6 Designation of dimensions for the thickness of a thin plate, squares, gradients, non-circular curves, etc. 51
11.7 Simplified designation of dimensions 53
11.8 Elevation 55
12 CAD files 57
12.1 General requirements 57
12.2 Document files 57
12.3 Naming of project model files 57
12.4 Construction drawing number 58
12.5 Naming of project sheet files 59
12.6 Project sheet file folders 61
12.7 Utilization and management of project sheet files 62
13 Layers of CAD files 63
14 CAD conventions 65
15 Synergistic design 68
15.1 General requirements 68
15.2 Drawing file organization of synergistic design 68
15.3 CAD file reference for synergistic design 69
Annex A Common construction drawing number and CAD file name lists 70
Annex B List of common layer names 77
Explanation of wording in this standard 130
List of quoted standards 131
1 General provisions
1.0.1 This standard is formulated with a view to unifying the conventions for building drawings, making the drawing format clear and concise, meeting the needs of information development and building construction, and facilitating international exchanges.
1.0.2 This standard is applicable to the following project drawings of building disciplines such as general drawing, architecture, structure, plumbing, HVAC and electricity:
1 Design drawings and as-built drawings in each stage of constructed, renovated or extended projects;
2 Measured drawing of the original building (structure) and the general plan;
3 The general design drawings and standard design drawings.
1.0.3 This standard is applicable to the drawings prepared as follows:
1 CAD drawing;
2 Manual drawing.
1.0.4 In addition to this standard, the building drawings shall also comply with those stipulated in the current relevant standards of the nation and the professional drawing requirements.
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2 Terms
2.0.1 drawing format
format consisting of the width and length of the drawing
2.0.2 chart
a kind of geometric figure constituted with a connection between the starting point and the end point in any manner, which may be in a shape of continuous or discontinuous straight line or curved line
2.0.3 font
style of the text, which is also known as the chirography
2.0.4 scale
ratio of the linear dimension of the graph in the drawing to that of the corresponding element of the object
2.0.5 view
the projection obtained when an object is orthographically projected onto the projection plane is called a view
2.0.6 axonometric drawing
the graph when an object, together with the rectangular coordinate system, is projected onto a projection plane along a direction that is not parallel to any coordinate plane is called an axonometric drawing
2.0.7 perspective drawing
image which is prepared with foreshortening feature according to the perspective principle to express the design intent of the building
2.0.8 elevation
vertical height from the ground (floor) to the reference plane, with a horizontal plane as the reference plane and also as the zero point (leveling origin)
2.0.9 project sheet
graph drawn in paper media according to the projection principle or relevant requirements and representing the shape, size, structure and other features of the project by lines, symbols, text notes and other graphic elements
2.0.10 CAD, computer aided design
design work of designers under the help of computers and their graphics devices, referred to as CAD
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2.0.11 CAD drawing file, CAD file
data file prepared with CAD drawing technique, and recording and storing various design contents represented by the project sheet
2.0.12 CAD drawing folder
logical space for storing the CAD file on disk or other devices, which is also known as a CAD file list
2.0.13 document file
CAD file that can be reused in more than one process
2.0.14 construction drawing number
number used to represent the pattern type and order of the drawing, which is also known as the drawing number (No.)
2.0.15 synergistic design
design process during which a synergistic design environment is created with the computer network and the CAD technique, and all the design team members thus can complete individual design tasks around the common design goals and objects in a parallel and interactive manner in accordance with their respective division of labor, to achieve optimal allocation and sharing of design resources and ultimately obtain the design outcome documents meeting project requirements
2.0.16 reference of CAD drawing file
a kind of CAD drawing technique realizing the reference to or display of part of or all the data content of other CAD file (the referenced file) in the current CAD file
2.0.17 layer
a kind of organizational structure of the related graphic element data in the CAD file, with the uniform colors, line types, line widths, states and other attributes adopted for all the entities belonging to the same layer
2.0.18 file level collaboration
the primary way of synergistic design, at which all synergistic design work is carried out on the basis of the project work files, and external references or mutually-provided files are adopted to carry out the synergistic design among disciplines
2.0.19 layer level collaboration
the advanced way of synergistic design, at which all synergistic design work is carried out on the basis of the mutually-provided files, with the necessary layers retained through the layer filter
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2.0.20 data level collaboration
the most advanced way of synergistic design, which is realized based on the sharing of work data of all synergistic design, and enables continuous collaboration of data between disciplines and between terminals by establishing the consistency of the underlying data
2.0.21 layer filter
a function in the common software for CAD drawing, which filters the layer based on attributes such as color, line type, line width and state, with or without retaining primitive information on that layer
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3 Drawing format and compiling sequence of drawings
3.1 Drawing format
3.1.1 The drawing format and frame size shall be in accordance with those specified in Table 3.1.1 and shall be in the formats specified in Figures 3.2.1-1~3.2.1-4.
Table 3.1.1 Drawing format and frame size (mm)
Format code
Size code A0 A1 A2 A3 A4
b×l 841×1,189 594×841 420×594 297×420 210×297
c 10 5
a 25
Note: in the table, b is the short side size of the format, l is the long side size of the format, c is the width between the frame line and the format line, and a is the width between the frame line and the binding edge.
3.1.2 The drawings requiring micro-replication shall be accompanied by an accurate metric scale on one side and a centering mark on all four sides. The metric scale shall be 100mm long in total, with a division of 10mm. The centering mark shall be drawn at the midpoint of each side length of the inner frame of drawing; the mark line shall be 0.35mm wide and shall be extended to the inner frame edge, with 5mm outside the frame. The line segment of the centering mark shall be taken in the range of the long side size l1 and the short side size b1 of the frame.
3.1.3 The short side size of the drawing shall not be lengthened. The long side length of the A0~A3 formats may be lengthened, but shall be in accordance with those specified in Table 3.1.3.
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Table 3.1.3 Lengthened long side size of drawing (mm)
Format code Long side size Lengthened long side size
A0 1,189 1,486
(A0+1/4l) 1,783
A0+1/2l) 2,080
(A0+3/4l) 2,378
(A0+l)
A1 841 1,051
(A1+1/4l) 1,261
(A1+1/2l) 1,471
(A3+3/4l) 1,682
(A1+l) 1,892
(A1+5/4l)
2,102
(A1+3/2l)
A2 594 743 891 1,041 1,189 1,338
(A2+1/4l) (A2+1/2l) (A2+3/4l) (A2+l) (A2+5/4l)
1,486 1,635 1,783 1,932 2,080
(A2+3/2l) (A2+7/4l) (A2+2l) (A2+9/4l) (A2+5/2l)
A3 420 630 841 1,051 1,261 1,471
(A3+1/2l) (A3+l) (A3+3/2l) (A3+2l) (A3+5/2l)
1,682 1,892
(A3+3l) (A3+7/2l)
Note: For drawings with special needs, the format with b×l of 841mm×891mm or 1,189mm×1,261mm may be adopted.
3.1.4 The drawing shall be horizontal with the short side as the vertical side and shall be vertical with the short side as the horizontal side. A0~A3 drawings should be used horizontally, but may also be used vertically if necessary.
3.1.5 In the design of one project, the number of formats of drawings used by each discipline should not be more than 2 kinds, excluding the A4 format of the list and the forms.
3.2 Title block
3.2.1 There shall be a title block and the frame line, format line, binding edge line and centering mark in the drawing. The position of title block and binding edge in the drawing shall meet the following requirements:
1 Drawings for horizontal use shall be arranged in the form specified in Figures 3.2.1-1, 3.2.1-2 or 3.2.1-3;
2 Drawing for vertical use shall be arranged in the form specified in Figures 3.2.1-4, 3.2.1-5 or 3.2.1-6.
Figure 3.2.1-1 A0~A3 horizontal format (I)
Figure 3.2.1-2 A0~A3 horizontal format (II)
Figure 3.2.1-3 A0~A1 horizontal format (III)
Figure 3.2.1-4 A0~A4 vertical format (I)
Figure 3.2.1-5 A0~A4 vertical format (II)
Figure 3.2.1-6 A0~A2 vertical format (III)
3.2.2 The dimensions, format and partition of the title block and countersign block shall be selected and determined according to the needs of the project. When the drawing is in the form as specified in Figures 3.2.1-1, 3.2.1-2, 3.2.1-4 or 3.2.1-5, the title block shall be arranged as shown in Figures 3.2.2-1 and 3.2.2-2; when the drawing is in the form as specified in Figures 3.2.1-3 or 3.2.1-6, the title block and signature block shall be arranged as shown in Figures 3.2.2-3, 3.2.2-4 and 3.2.2-5. The signature block shall include the real name column and signature column, and shall meet the following requirements:
1 General provisions
2 Terms
3 Drawing format and compiling sequence of drawings
3.1 Drawing format
3.2 Title block
3.3 Compiling sequence of drawings
4 Chart
5 Font
6 Scale
7 Symbols
7.1 Cutting symbols
7.2 Index symbols and detail symbols
7.3 Leader line
7.4 Other symbols
8 Location axis
9 Legends of common building materials
9.1 General requirements
9.2 Legends for common building materials
10 Drawing methods
10.1 Projection method
10.2 View layout
10.3 Sectional view and cross-sectional view
10.4 Simplified drawing method
10.5 Axonometric drawing
10.6 Perspective drawing
11 Dimensions
11.1 Dimension boundary line, dimension line and start and end symbols of a dimension
11.2 Dimension figures
11.3 Dimension arrangement and layout
11.4 Designation of dimensions for radius, diameter and sphere
11.5 Designation of angle, radian and arc length
11.6 Designation of dimensions for the thickness of a thin plate, squares, gradients, non-circular curves, etc.
11.7 Simplified designation of dimensions
11.8 Elevation
12 CAD files
12.1 General requirements
12.2 Document files
12.3 Naming of project model files
12.4 Construction drawing number
12.5 Naming of project sheet files
12.6 Project sheet file folders
12.7 Utilization and management of project sheet files
13 Layers of CAD files
14 CAD conventions
15 Synergistic design
15.1 General requirements
15.2 Drawing file organization of synergistic design
15.3 CAD file reference for synergistic design
Annex A Common construction drawing number and CAD file name lists
Annex B List of common layer names
Explanation of wording in this standard
List of quoted standards
