1、BRITISH STANDARD BS ISO 128-23:1999 Technical drawings General principles of presentation Part 23: Lines on construction drawings ICS 01.100.30 BS ISO 128-23:1999 This British Standard, having been prepared under the direction of the Sector Committee for Building and Civil Engineering, was published
2、 under the authority of the Standards Committee and comes into effect on 15 October 1999 BSI 15 September 2002 ISBN 0 580 35143 2 National foreword This British Standard reproduces verbatim ISO 128-23:1999 and implements it as the UK national standard. The UK participation in its preparation was ent
3、rusted by Technical Committee B/212, Tolerances, drawing practice, modular co-ordination, joints, project information and computer modelling, to Subcommittee B/212/2, Construction drawing practice, which has the responsibility to: A list of organizations represented on this subcommittee can be obtai
4、ned on request to its secretary. Cross-references The British Standards which implement international or European publications referred to in this document may be found in the BSI Standards Catalogue under the section entitled “International Standards Correspondence Index”, or by using the “Find” fa
5、cility of the BSI Standards Electronic Catalogue. A British Standard does not purport to include all the necessary provisions of a contract. Users of British Standards are responsible for their correct application. Compliance with a British Standard does not of itself confer immunity from legal obli
6、gations. aid enquirers to understand the text; present to the responsible international/European committee any enquiries on the interpretation, or proposals for change, and keep the UK interests informed; monitor related international and European developments and promulgate them in the UK. Summary
7、of pages This document comprises a front cover, an inside front cover, the ISO title page, pages ii to iv, pages 1 to 12, an inside back cover and a back cover. The BSI copyright date displayed in this document indicates when the document was last issued. Amendments issued since publication Amd. No.
8、 Date CommentsISO 128-23:1999 ii BSI 15 September 2002 Contents Page Foreword iii 1S c o p e 1 2 Normative references 1 3 General principles 1 4 Types of lines and their applications 1 5L i n e w i d t h s 4 Annex A (informative) Examples of application 5ISO 128-23:1999 BSI 15 September 2002 iii For
9、eword ISO (the International Organization for Standardization) is a worldwide federation of national standards bodies (ISO member bodies). The work of preparing International Standards is normally carried out through ISO technical committees. Each member body interested in a subject for which a tech
10、nical committee has been established has the right to be represented on that committee. International organizations, governmental and non-governmental, in liaison with ISO, also take part in the work. ISO collaborates closely with the International Electrotechnical Commission (IEC) on all matters of
11、 electrotechnical standardization. International Standards are drafted in accordance with the rules given in ISO/IEC Directives, Part 3. Draft International Standards adopted by the technical committees are circulated to the member bodies for voting. Publication as an International Standard requires
12、 approval by at least 75% of the member bodies casting a vote. International Standard ISO 128-23 was prepared by Technical Committee ISO/TC 10, Technical drawings, product definition and related documentation, Subcommittee SC 8, Construction documentation. This first edition is based on ISO 128:1982
13、, clause 3, and it replaces the rules specified in that clause. ISO 128 consists of the following parts, under the general title Technical drawings General principles of presentation: Part 20: Basic conventions for lines; Part 21: Preparation of lines by CAD systems; Part 22: Basic conventions and a
14、pplications for leader lines and reference lines; Part 23: Lines on construction drawings; Part 24: Lines on mechanical engineering drawings; Part 25: Lines on shipbuilding drawings; Part 30: Basic convention for views; Part 50: Basic conventions for representing areas on cuts and sections. NOTE Fur
15、ther parts of ISO 128 are planned, covering other general principles of presentation including those for application of lines within drawings of various technical fields. Annex A of this part of ISO 128 is for information only.ISO 128-23:1999 iv BSI 15 September 2002 Introduction The basic conventio
16、ns and the application of lines in respect to other fields of drawing practice are presented in other parts of ISO 128 since requirements in industry vary considerably. For further information, see ISO 128-20.ISO 128-23:1999 BSI 15 September 2002 1 1 Scope This part of ISO 128 specifies types of lin
17、es and their application in construction documentation comprising architectural drawings, structural engineering drawings, building service engineering drawings, civil engineering drawings, landscape drawings and town planning drawings. 2 Normative references The following normative documents contai
18、n provisions which, through reference in this text, constitute provisions of this part of ISO 128. For dated references, subsequent amendments to, or revisions of, any of these publications do not apply. However, parties to agreements based on this part of ISO 128 are encouraged to investigate the p
19、ossibility of applying the most recent editions of the normative documents indicated below. For undated references, the latest edition of the normative document referred to applies. Members of ISO and IEC maintain registers of currently valid International Standards. ISO 128-20:1996, Technical drawi
20、ngs General principles of presentation Part 20: Basic conventions for lines. ISO 129:1985, Technical drawings Dimensioning General principles, definitions, methods of execution and special indications. ISO 3766:1995, Construction drawings Simplified representation of concrete reinforcement. ISO 4068
21、:1978, Building and civil engineering drawings Reference lines. ISO 4069:1977, Building and civil engineering drawings Representation of areas on sections and views General principles. ISO 4463-1:1989, Measurement methods for building Setting-out and measurement Part 1: Planning and organization, me
22、asuring procedures, acceptance criteria. ISO 6428:1982, Technical drawings Requirements for microcopying. ISO 7519:1991, Technical drawings Construction drawings General principles of presentation for general arrangement and assembly drawings. ISO 8048:1984, Technical drawings Construction drawings
23、Representation of views, sections and cuts. ISO 8560:1986, Technical drawings Construction drawings Representation of modular sizes, lines and grids. ISO 11091:1994, Construction drawings Landscape drawing practice. 3 General principles The types of lines, their designations and their dimensions as
24、well as general rules for draughting of lines are specified in ISO 128-20. The requirements for microcopying are specified in ISO 6428. 4 Types of lines and their applications The first part of the number is the number of line type in ISO 128-20. Examples of applications are shown in Annex A.ISO 128
25、-23:1999 2 BSI 15 September 2002 Table 1 Types of lines and their application No. Description and representation Application Reference to ISO 01.1 Continuous narrow line .1 boundaries of different materials in view, cut and section (alternatively, see 01.2.2) 7519 .2 hatching 4069 .3 diagonals for i
26、ndication of openings, holes and recesses 7519 .4 arrow lines in stairs, ramps and sloping areas 7519 .5 modular grid lines, first stage (if necessary, other colour than outlines) 8560 .6 short centrelines .7 extension lines 129 .8 dimension lines and their terminators 129 .9 leaderlines 129 .10 exi
27、sting contours on landscape drawings (alternatively, see 02.1.1) 11091 .11 visible outlines of parts in view (alternatively, see 01.2.3) .12 simplified representation of doors, windows, stairs, fittings etc. (alternatively, see 01.2.4) 7519 .13 framing of details Continuous narrow lines with zigzags
28、 .14 limits of partial or interrupted views, cuts and sections, if the limit is not a line 04.1 (alternatively, see 04.1.6) 01.2 Continuous wide line .1 visible outlines of parts in cut and section when hatching is used 7519 .2 boundaries of different materials in view, cut and section (alternativel
29、y, see 01.1.1) .3 visible outlines of parts in view (alternatively, see 01.1.11) 7519 .4 simplified representation of doors, windows, stairs, fittings etc. (alternatively, see 01.1.12) 7519 .5 modular grid lines, second stage (if necessary other colour than outlines) 8560 .6 arrow lines for marking
30、of views, cuts and sections 8048 .7 proposed contours on landscape drawings 11091 01.3 Continuous extra-wide line .1 visible outlines of parts in cut and section when hatching is not used 7519 .2 reinforcing bars (see 02.3.1) 3766 .3 lines of special importance 02.1 Dashed narrow line .1 existing co
31、ntours on landscape drawings (alternatively, see 01.1.10) 11091 .2 subdivision of plant beds/grass 11091 .3 hidden outlines (alternatively, see 02.2.1) 02.2 Dashed wide line .1 hidden outlines (alternatively, see 02.1.3) ISO 128-23:1999 BSI 15 September 2002 3 Table 1 Types of lines and their applic
32、ation (continued) No. Description and representation Application Reference to ISO 02.3 Dashed extra-wide line .1 reinforcing bars in bottom layer on plan and far face layer in elevation when bottom and top layers and near and far face layers are shown on the same sketch 3766 04.1 Long dashed dotted
33、narrow line .1 cutting planes (line 04.2 at ends and changes of direction) .2 centrelines .3 lines of symmetry (identified at the ends by two narrow short parallel lines drawn at right angle) .4 framing of enlarged details .5 reference lines .6 limits of partial or interrupted views, cuts and sectio
34、ns (especially for short lines and in narrow situations; see examples 01.1.2, 01.2.1, 01.3.1, etc., in Annex A; alternatively, see 01.1.14) 04.2 Long dashed dotted wide line .1 cutting planes (at ends and changes of direction; see 04.1.1) .2 outlines of visible parts situated in front of the cutting
35、 plane 04.3 Long dashed dotted extra- wide line .1 secondary lines for setting out and arbitrary reference lines 4463-1;4068 .2 indication of lines or surfaces to which a special requirement applies .3 boundary lines for contracts, stages, zones etc. 05.1 Long dashed double- dotted narrow line .1 al
36、ternative and extreme positions of movable parts .2 centroidal line .3 outlines of adjacent parts 05.2 Long dashed double- dotted wide line .1 outlines of hidden parts situated in front of the cutting plane 05.3 Long dashed double- dotted extra-wide line .1 reinforcing prestressed bars and cables 37
37、66 07.1 Dotted narrow line .1 outlines of parts not included in the project -ISO 128-23:1999 4 BSI 15 September 2002 5 Line widths On a construction drawing three line widths, narrow, wide and extra-wide, are normally used (see Table 2). The proportions between the line widths are 1:2:4. A special l
38、ine width is used for representation and lettering of graphical symbols. This line width is situated between the width of the narrow and the wide line. Table 2 Line widths The line widths shall be chosen according to the type, size and scale of the drawing and the requirements at microcopying and ot
39、her methods of reproduction. Dimensions in millimetres Line group Narrow line Wide line Extra-wide line Line widths for graphical symbols 0,25 0,13 0,25 0,5 0,18 0,35 0,18 0,35 0,7 0,25 0,5 0,25 0,5 1 0,35 0,7 0,35 0,7 1,4 0,5 10 , 5120 , 7ISO 128-23:1999 BSI 15 September 2002 5 Annex A (informative
40、) Examples of application Examples of the application of the different types of lines, along with the corresponding reference numbers from clause 4, are given in Table A.1. Table A.1 Examples of application No. Line type Example of application 01.1 Continuous narrow line 01.1.1 Boundaries of differe
41、nt materials in view, cut and section 01.1.2 Hatching 01.1.3 Diagonals for indication of openings, holes and recesses 01.1.4 Arrow lines in stairs, ramps and sloping areasISO 128-23:1999 6 BSI 15 September 2002 Table A.1 Examples of application (continued) No. Line type Example of application 01.1.5
42、 Modular grid lines, first stage 01.1.6 Short centrelines 01.1.7 Extension lines 01.1.8 Dimension lines and their terminators 01.1.9 Leader lines 01.1.10 Existing contours on landscape drawings 01.1.11 Visible outlines of parts in view (alternatively, see 01.2.3) 01.1.12 Simplified representation of
43、 doors, windows, stairs, fittings etc. (alternatively, see 01.2.4)ISO 128-23:1999 BSI 15 September 2002 7 Table A.1 Examples of application (continued) No. Line type Example of application 01.1.13 Framing of details 01.1.14 Limits of partial or interrupted views, cuts and sections, if the limit is n
44、ot a line 04.1 01.2 Continuous wide line 01.2.1 Visible outlines of parts in cut and section when hatching is used 01.2.2 Boundaries of different materials in view, cut and section 01.2.3 Visible outlines of parts in view (alternatively, see 01.1.11)ISO 128-23:1999 8 BSI 15 September 2002 Table A.1
45、Examples of application (continued) No. Line type Example of application 01.2.4 Simplified representation of doors, windows, stairs, fittings etc. (alternatively, see 01.1.12) 01.2.5 Modular grid lines, second stage 01.2.6 Arrow lines for marking of views, cuts and sections 01.2.7 Proposed contours
46、on landscape drawings 01.3 Continuous extra-wide line 01.3.1 Visible outlines of parts in cut and section when hatching is not used 01.3.2 Reinforcing barsISO 128-23:1999 BSI 15 September 2002 9 Table A.1 Examples of application (continued) No. Line type Example of application 02.1 Dashed narrow lin
47、e 02.1.1 Existing contours on landscape drawings (alternatively, see 01.1.10) 02.1.2 Subdivision of plant beds/grass 02.2 Dashed wide line 02.2.1 Hidden outlines 02.3 Dashed extra-wide line 02.3.1 Reinforcing bars in bottom layer on plan and far face layer in elevation when bottom and top layers are
48、 shown on the same sketch 04.1 Long dashed dotted narrow line 04.1.1 Cutting planes (drawn with line 04.2 at ends and changes of direction)ISO 128-23:1999 10 BSI 15 September 2002 Table A.1 Examples of application (continued) No. Line type Example of application 04.1.2 Centrelines 04.1.3 Lines of sy
49、mmetry 04.1.4 Framing of enlarged details 04.1.5 Reference lines 04.2 Long dashed dotted wide line 04.2.1 Cutting planes (drawn with line 04.2 at ends and changes of direction; the rest is drawn with line 04.1)ISO 128-23:1999 BSI 15 September 2002 11 Table A.1 Examples of application (continued) No. Line type Example of application 04.2.2 Outlines of visible parts situ
