by Brianna Crandall — September 26, 2014—Following a fifteen-month development process with an unprecedented 379 ballot items to study, the nation’s leading computer-aided design (CAD) standard has received an update. The American Institute of Architects (AIA), the Construction Specifications Institute (CSI), and the National Institute of Building Sciences (NIBS) recently announced the release of the newest edition of the United States National CAD Standard (NCS), available online.
The NCS helps architects, constructors and operators coordinate efforts by classifying electronic design data consistently and making information retrieval easier. It improves communication among owners and project teams; cuts or eliminates costs of developing and maintaining company-specific standards; and reduces the expense of transferring building data from design applications to facilities management applications. More than 6,000 architectural, engineering and construction (AEC) firms have voluntarily adopted the NCS in their workplaces, notes NIBS.
The new edition, which CSI notes is “the most detailed, yet all encompassing, edition yet,” includes:
- New implementation guidelines on how to successfully implement the NCS for building information modeling (BIM) use—The “BIM Implementation” guidelines address relevant sections within the NCS that can be incorporated into the BIM workflow and current contracts referencing project delivery of construction information;
- An improved style format, which applies to the body of the standard to properly number chapter and subchapter headings;
- An enhanced and improved Symbols Library—All 1300+ NCS symbol CAD files were replaced and renamed using a unique three-digit extension number and abbreviated name; converted to inches; and include new insertion points (with line type and pattern file type definitions where appropriate). Each individual symbol links to a corresponding .DWG, .LIN or .PAT drawing file. The library includes 72 new and 40 revised symbols, as well as two new Symbols Chapters.
- New “Survey/Mapping” Discipline Designators;
- New Major and Minor Groups definitions added for “Airports and Plumbing;”
- A revised “Module 1 — File Naming” section to better address Model Files and Sheet Files;
- A Revised “Module 4 — Drafting Conventions, 4.2 Drawing Standards” list of common scales to add “Site/Civil” scale descriptions;
- A Revised “Module 4 — Drafting Conventions, 4.3 Sheet Types” section, which includes a new “Floor Numbering” format;
- New and revised “Communications” terms and abbreviations;
- A Revised “Module 7 — Notations, 7.4 User’s Guide” text format for notes; and
- A Revised “Plotting Guidelines” introduction.
The NCS is designed to coordinate the efforts of the entire design and construction team by providing a way to organize and present electronic building design information consistently. It streamlines communication across disciplines during project development and throughout the life of a facility. Use of the NCS can help reduce costs and produce greater efficiency in the design and construction process.
The standard is based on components from its partnering organizations: NIBS’s Foreword, Administration, Plotting Guidelines and new BIM Implementation modules; AIA’s CAD Layer Guidelines module; and CSI’s Uniform Drawing System modules. By combining these resources, the NCS prescribes CAD layer names; drawing set organization and drafting; notation; and NCS-BIM coordination and plotting conventions. With this edition, the NCS also provides needed direction on how to incorporate the NCS content within the BIM workflow.
“Just as design, construction and facility management teams need to work together to develop a high-performing building, it’s important that the reference standards they use are coordinated and work together,” said NIBS President Henry L. Green, Hon. AIA. “NCS Version 6 is the first step in bringing the NCS and the National BIM Standard-United States into alignment, which will streamline the process of making electronic design data available throughout the life cycle of a building.”
Many public and private sector organizations either require or use the NCS, notes NIBS. NCS users who have purchased the previous version of the NCS within the past six months are eligible for a discount on NCS V6 until March 9, 2015.
