Title Block

Title block has the highest concentration of information in a sheet of engineering drawing. It is the door to understanding the drawing and the company, and includes all the information which enables the drawing to be intepreted, identified and archived.

The title block includes the border and the various sections for providing administrative and technical information, and usually is located at the bottom right hand corner of a sheet.

Traditionally and the most commonly data field for the title block are the following items:

The most commonly data field for the title block
1Legal ownerRevision indexMaterial
2Created byNumber of sheetsHardness
3Approved byLanguage codeHeat treatment
4TitleSupplementary titleCoating
5Document typeResponsible departmentSurface texture
6Identification numberTechnical referenceGeneral tolerances
7Date of issueClassification / key wordsGeneral GD&T tolerances
8Sheet numberDocument statusScale
9 Page numberprojection symbol
10 Number of pagesPart weight
11 Paper size 
    

Many different field arrangements can be design, a good title block should consider the following characteristics:

  • Appropriate for the drawing type
  • Intelligently constructed
  • Filled in completely
  • Smaller is better

Different national standards and many company had their own title blocks for many years, and there was no agree on one title block in the past.

ISO 7200 specifies the data fields used in the title blocks and headers of technical product documents. Its purpose is to facilitate the exchange of documents and ensure compatibility by defining field names, their contents and their length (number of characters). It covers manual as well as computer-based design work, and is applicable to all kinds of documents for all kind of products — in all phases of the product life cycle and all fields of engineering.

Data field
Bounded area used for a specific category of data.
Segment
Fixed portion of a document, sharing the identification number with the other portions, but individually presented and stored.
Sheet
Segment of a technical drawing.
Page
Portion in a low-level physical substructure of a document, providing a presentation-dependent division of the document content (primarily applied in the context of a text-based document)

According to ISO, the number of data fields in the title block shall be limited to a minimum, while other data fields shall be handled dynamically and presented outside the title block only when used, e.g. scale, projection symbol, general tolerance and surface texture requirements. This idea made the title block compact form and provide maximum space for workin area.


Data fields in the title block

The identifying data fields in the title block shall be in accordance with ISO 7200 : 2004. some data fields are mandatory and others are optional.

Identifying data fields

The administrative data fields in the title block shall be in accordance with the following table

Identifying data fields in the title block
Field nameRecommended number of charactersObligation
Legal ownerUnspecifiedMandatory
Identification number16Mandatory
Revision index2Optional
Date of issue10Mandatory
Sheet number4Mandatory
Number of sheets4Optional
Language code4Optional

Legal owner

The name of the legal owner of the document, e.g. firm, company, enterprise. It could be the official owner’s name, an abridged trade name or a logotype for the presentation. Many companies include their logo in addition to their name and address.

The number of characters has not specified by ISO 7200, so the field size is optional, and according to needs.

Identification number (Drawing number)

The document identification number is used for part identification and to ease storage and retrieval of the drawing and the produced parts. The identification number shall be unique — at least within the organization of the legal owner.

While there is no set way to assign part numbers, common systems are nonsignificant, significant, or some combination of the two previous systems.

Nonsignificant numbering systems are most preferred because no prior knowledge of significance is required.

Significant numbering systems could be used for commonly purchased items like fasteners. For example, the part number for a washer could include the inside diameter, outside diameters, thickness, material, and plating.

A combination of nonsignificant and significant numbering systems may use sections of the numbers in a hierarchical manner. For example, the last three digits could be the number assigned to the part (001, 002, 003, etc.). This would be nonsignificant. The remaining numbers could be significant: two numbers could be the model variation, the next two numbers could be the model number, and the next two could be the series number while the last two could be the project number. Many other possibilities exist.

Date of issue

The date of issue is the date on which the document is officially released for the first time, and that of every subsequent released version. It is when the document is made available for its intended use. The date of issue is important for legal reasons, e.g. patent rights, traceability.

Example: Field size 9x44 mm; Font height 3 mm.

Sheet number

The sheet number shows how many individual sheets are required to completely describe a part. For many small parts, only one sheet is required. When parts are large,or complicated, multiple sheets are required. For example a cast part can have two individual drawing sheets with the same drawing number, one for casting specification and the second for machining and finishing specification. In this case the number 1/2 would indicate the "first sheet" of a two "sheet drawing" and the second sheet shall be 2/2 .

Number of sheets

This is the total number of sheets of which the document consists. Documents update continuously and number of sheets shall specified later, so its field will be blank for a long period. We are grateful that the field is not mandatory.

Language code

The language code is used to indicate the language in which the language-dependent parts of the document are presented. It controls the print-out of the document and administration of the different language versions when required. It is based on ISO 639.

Whenever possible, documents should be presented in single-language versions. However, in a multilingual document, the language codes shall be separated with an appropriate sign.


Descriptive data fields

The administrative data fields in the title block shall be in accordance with the following table

Descriptive data fields in the title block
Field nameRecommended number of charactersObligation
Title25Mandatory
Supplementary title2 x 25Optional

Title

The title refers to the content of the document. More detailed information, e.g. regarding origin, adaptation to market, standard or environmental conditions, or information on erection direction or position, may be given in the supplementary title (see 5.2.3). Titles that limit a part to a particular use or application should be avoided.

The title should be chosen from established terms, such as those given in international or national standards, company standards, or according to practice within the area of application. Consistent descriptions facilitate efficient searching and retrieval using the title field. Abbreviations should be avoided.

Supplementary title

The supplementary title field may be used to give further information on the object, when needed. When indicating information in this field, it shall be taken into consideration that in some cases only the title field is to be presented. Abbreviations should be avoided.


Administrative data fields

The administrative data fields in the title block shall be in accordance with the following table

For administrative reasons, in product data management systems (PDM) etc., data fields such as creator and approval person may be shown in a separate document part, e.g. description of revision.

Administrative data fields in the title block
Field nameRecommended number of charactersObligation
Responsible department10Optional
Technical reference20Optional
Approval person20Mandatory
Creator20Mandatory
Document type30Mandatory
Classification/key wordsUnspecifiedOptional
Document status20Optional
Page number4Optional
Number of pages4Optional
Paper size4Optional

Responsible department

The name or code for the organizational unit responsible for the contents and maintenance of the document at the date of release.

Technical reference

The name of the person having sufficient knowledge of the technical contents of the document to be named as the contact person and who will answer, coordinate and act on queries. Even if a consultant prepares the document, the technical reference shall be a person within the legal owners organization. The name of the technical reference may be kept up to date without formal rules for revision.

Approval person

The name of the person who approved the document. The document might have been checked by a number of different specialists in accordance with the local rules for that type of document, specific project etc. The names of such specialists may be indicated in the title block or in a separate document part.

Creator

The creator or person who has prepared or revised the document.

Document type

The document type field indicates the role of the document with respect to its content of information and representation format. It is one of the main ways in which searches for documents can be made.

Classification/key words

The text or code to categorize the contents of the document used for retrieval.

Document status

The document status indicates where the document is in its life cycle. The status is indicated by means of terms such as “In preparation”, “Under approval”, “Released” and “Withdrawn”.

Page number

The page number is usually generated by the presentation system.

Number of pages

The number of pages is dependent on the presentation format used, e.g. text font, paper size and character size.

Paper size

The size of the form for the original document, e.g. A4.


Title block arrangement

Iso has provided two samples for title block; the first one is in compact form — Provides maximum space for factual content of document. Its dimension is 180 x 27 mm, contains five optional data fields.

9 9 55 32 27 180 42 24 45 9 9 9 Jane Smith Created by Daivid Brown Approved by Sub-assembly drawing Documet types Released Document status 01 Rev 2015/02/24 Date of issue 1/5 Sheet Apparatus plate Complete with brackets Title Legal owner & Logo Part design group Responsible dept. Patrica johnson Technical reference Lang en Optional Optional Optional Optional Optional AB123 456-7

The total width is 180 mm to fit an A4 portrate sheet, with the left margin being 20 mm and the right margin 10 mm. The same title block is used for all paper sizes.

The second is a title block with person name fields on additional line — Provides larger space for legal owner field and free area in upper right-hand corner for classification, key words, etc. Its dimension is 180 x 36 mm, contains six optional data fields.

9 9 55 36 180 24 9 9 32 42 42 42 9 9 AB123 456-7 Jane Smith Created by Daivid Brown Approved by Sub-assembly drawing Documet types Released Document status 01 Rev 2015/02/24 Date of issue 1/5 Sheet Apparatus plate Complete with brackets Title Legal owner & Logo Part design group Responsible dept. Patrica johnson Technical reference Lang en

Disadvantage of ISO Title block examples

In favour of fitting the title block in A4 portrate size ISO proposed the width of title block equal to 180mm length. This recommendation has two drawbacks:
Firstly, it is just designed for fitting and good looking in A4 portrate size, and is useless in the other sheet format like A4 landscape and A3. Secondly, The total wdith 180mm force us to give more unnessesary space for some data fields, and makes the total size bigger. This is against the "smaler is better".

In the first ISO example, owner Field size is 18 x 32 mm that has not enough space for both logo and company name.

In the second ISO example, owner field and his technical staff are not arranged in one division. The fields arrangment have not Intelligently constructed.


3rd Title block arrangement based on ISO 7200

There are eight mandatory and eleven optional data fields in ISO 7200, therefore many types of table block can be designed. The two table block issued by ISO are just examples and are not obligation. Lets have a third title block with all eight mandatory fields.

Mandatory and optional data field in the ISO title block
 Mandatory in the title block Optional in the title blockOutside the title block
1Legal ownerRevision indexMaterial
2Created byNumber of sheetsHardness
3Approved byLanguage codeHeat treatment
4TitleSupplementary titleCoating
5Document typeResponsible departmentSurface texture
6Identification numberTechnical referenceGeneral tolerances
7Date of issueClassification / key wordsGeneral GD&T tolerances
8Sheet numberDocument statusScale
9 Page numberprojection symbol
10 Number of pagesPart weight
11 Paper size 
    
9 24 9 50 25 27 142 9 9 50 AB123 456-7 Jane Smith Created by Daivid Brown Approved by Sub-assembly drawing Documet types Released Document status 01 Rev 2015/02/24 Date of issue 1/5 Sheet Tolerancing.net ± Apparatus plate Complete with brackets Title Owner & technical staff Title & description Archive data field

In mechanical engineering drawings data fiels such as: Heat treatment, Coating, Surface texture, General tolerances, Scale, Part weight are essential for both designers and manufacturers. These important data should be placed outside of the title block.


  • References:
    • ISO 7200 : 2004
    • Paul J. Drake, Jr. Dimensioning and Tolerancing Handbook