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Decimal Sheet Numbering for Civil Drawings

July 29, 2019 Leave a Comment

Sheet Numbering Concept

The core concept of this system is to break the drawing sheets into more manageable chunks by isolating elements into groups.

The Divisions

Division Description Remarks
C00 Civil coversheets and general notesProject Title, General Notes,
Drawing Schedule
C01Site, existing conditions, demolition,
landscaping etc.
Overall plans
C02Site grading and horizontal controlPlans
C03Site drainage and UtilitiesPlans
C04 Site earthworks and excavationPlans
C05Earthwork profiles 
C06 Road profiles 
C07 Stormwater profiles 
C08 Sanitary profiles 
C09 Water-hydraulic profiles 
C10 Other profiles 
C11 Site StructuresDetails
C12 Site utilitiesDetails
C13 Flow diagrams 
C14 Site electrical conduit layouts  

Notes

  1. Small Projects: Plans and details can occupy the same sheet on smaller jobs. In this case use the lowest applicable division for the sheet number. Eg S2.1 = Level 1 slab plan and details
  2. Client Document Numbers: Some times clients what there own document numbers on the drawings. A recommendation for these projects to show thier number in one box titled “document number” and our number in a seperate box nextdoor titled “sheet number”.
  3. A decimal separator is used because it commonly means a “division of a whole”.

Benefits from a Drafting point of view

  1. Cross referencing errors are reduced due to the relative ease of adding new sheets.
  2. Changes in design are easier to handle due to easier insertion of additional sheets
  3. Drawing sets are more logical as they follow a set menu.

Benefits from a Directors point of view

  1. Cross referencing has always been a major issue when drawing numbers change. This occurs more frequently then it should. Often the problem stems from not allow enough sheets for expansion of the documentation set especially when plans have been sequential numbered. With the decimal sheet numbering system this event is reduced to next to zero. That means less rework of drawings and ultimately a big cost saving for the company.

Filed Under: Civil Drafting, Drafting Standards

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