ASME Y14.100 pdf download Engineering Drawing Practices
4 GENERAL DRAWING PRACTICES This paragraph establishes the essential general requirements for the preparation of engineering draw- ings and associated lists.
4.1 Nonmandatory Appendix B — Noncommercial Drawing Practices Additional requirements for the preparation of engi- neering drawings that are intended for other than com- mercial applications are detailed in Nonmandatory Appendix B.
4.2 Types and Application of Engineering Drawings Hardware and software drawings shall be in accor- dance with ASME Y14.24.
4.3 Associated Lists Associated lists shall be in accordance with ASME Y14.34M.
4.4 Revisions of Engineering Drawings and Associated Lists Revisions of engineering drawings and associated lists shall be in accordance with ASME Y14.35M.
4.5 Size and Format of Engineering Drawings
4.5.1 Metric. Metric drawing sheet sizes and format shall be in accordance with ASME Y14.1M.
4.5.2 Decimal Inch. Decimal inch drawing sheet sizes and format shall be in accordance with ASME Y14.1.
4.6 Application Data When used, application data with “Next Assembly” and “Used On” columns are required for drawings whose detail part or assembly depicted thereon is for an element of a larger item. The “Next Assembly” (“NEXT ASSY”) column shall show the drawing number(s), part, or identifying number (PIN) of the next higher assem- bly(ies) to which the drawing applies. The “Used On” (“USED ON”) column shall show the model number or equivalent designator of the assembled unit(s) of which the part is an element. The application data shall be located near the title block on sheet 1, or placed on a separate referenceddocument, orprovided ona separate parts list. When the application data appears on a sepa- rate referenced document, a cross reference note shall be included on each parent drawing to indicate that a separate referenced document is available. When appli- cation data is included on a separate parts list, the note required by ASME Y14.34M shall be expanded to read: SEE SEPARATE PARTS LIST FOR PARTS AND APPLICATION DATA
4.7 Preparation of Duplicate Original Duplicate originals shall not be prepared for the purpose of maintaining duplicate records. Their application is limited to replacing lost original drawings.
4.8 Line Conventions and Lettering Lines and lettering shall be in accordance with ASME Y14.2M.
4.9 Single, Multiple, and Sectional View Drawings Single, multiple, and sectional views shown on engi- neering drawings shall be in accordance with ASME Y14.3.
4.10 Isometric and Pictorial Views Isometric or pictorial views shall be in accordance with ASME Y14.4M and may be shown on engineering drawings provided that clarity is not degraded.
4.11 Projection Systems Projection systems and associated symbols shall be in accordance with ASME Y14.3. 4.12 Dimensioning and Tolerancing Dimensioning and tolerancing shall be in accordance with ASME Y14.5M.