SANS 10143

Overview

• Title: SABS 0143
• Edition: 1, 1980 (As amended 1994)
• Published by: South African Bureau of Standards (SABS)
• Purpose: Code of practice for building drawing practice to ensure clear communication in building construction drawings.

Preface

• Aimed at architectural, engineering, and building students.
• Emphasizes the use of a coordinated drawing system over traditional methods.
• Provides guidelines but not mandatory rules for drawing preparation.
• Includes a "Plan of Work" as a flow diagram in Appendix B.

Important Details

• SABS Procedures: Approved on 27 February 1980.
• Authorities incorporating this standard into legislation should consult SABS.
• The standard will be revised as needed.

Contents Overview

1. Scope: Information for the production of building and services drawings.
2. General Guidelines:
   • Clear and concise communication.
   • Use of durable materials for site use.
   • Systematic drawing arrangement and positive draughtsmanship encouraged.
3. Classification of Drawings:
   • Sketch Drawings: Preliminary, indicate general intentions.
   • Design Drawings: Amplified sketches, dimensioned for contract documents.
   • Working Drawings: Include locality, site, layout, component range/details, and assembly drawings.
4. Size of Drawing Sheets:
   • Standard sizes (A-series) recommended for ease of handling and microfilming.
   • Folding methods for printing and filing.
5. Layout of Drawing Sheets:
   • Filing margins, title panels, and information panels for systematic reference.
6. Scales:
   • General and specific scales for different drawing types.
7. Lines:
   • Different thicknesses for clarity, with ink line specifications.
8. Annotation:
   • Notes should be concise, grouped, and clearly linked to details.
   • Lettering should be legible and standardized.
9. Dimensions:
   • Only essential dimensions; clear and consistent dimension lines.
   • Use of decimal notation and linear dimensions in millimeters.
10. Levels:
    • Datum levels and expression of levels in meters.
11. Reference Grids:
    • Use of grids for modular coordination in design and construction.
12. Projection:
    • Use of first angle and isometric projections for building drawings.
13. Designation and Location of Spaces and Components:
    • Numbering systems for floors, rooms, spaces, and components.
14. Representation of Materials:
    • Use of hatching over coloring for material differentiation.
15. Graphical Symbols and Representation:
    • Standard graphical symbols for clear communication.
16. Symbols for Components and Materials:
    • Commonly used symbols and their representations.
17. Reinforced Concrete Drawings:
    • Guidelines for layout and detail drawings for concrete work.
18. Structural Steelwork Drawings:
    • Recommendations for sketch, design, and working drawings.
19. Services Drawings:
    • Include air-conditioning, electrical, mechanical, and plumbing drawings.
20. Schedules:
    • Tabulation of requirements for various components and activities.

Appendices

• Appendix A: Applicable standards, referencing various BS and SABS standards.
• Appendix B: Plan of work flow diagram showing the preparation and stages of document development in a project.

Contact Information

• Address: South African Bureau of Standards, Private Bag X191, Pretoria, Republic of South Africa 0001
• Telephone: (012) 428-7911
• Fax: (012) 344-1568
• Email: [email protected]
• Website: SABS Website

This standard is comprehensive, covering all aspects of building drawing practices to ensure accurate, clear, and efficient communication in building projects.