New Version of United States National CAD Standard Now Available

Words: Walter Marlowe, David HarrisThe American Institute of Architects (AIA), Construction Specifications Institute (CSI), and National Institute of Building Sciences (NIBS) have unveiled the United States National CAD Standard® (NCS) Version 4.0, the first update to the Standard since 2005.

The latest edition, designed for owners, architects, engineers, contractors, facility managers, code officials, manufacturers, and suppliers, adds the following improvements to Version 3.1:
  • Expanded and reorganized CAD Layer Guidelines make it easier to locate layer names, including new telecommunications and electrical discipline layer names.

  • Updated Uniform Drawing System adds new and revised symbols for geotech, security, fire suppression, masonry, plaster and updates and clarifies common drawing practices.

  • Completely re-written Plotting Guidelines reflect that line widths are no longer required to be mapped to color numbers.
  • Version 4.0 now includes documents in PDF, Excel, and .dwg file formats, making it easier to search and integrate the standard into CAD, BIM, costing, and other software.
"CSI and our colleagues at AIA and NIBS are proud to introduce the latest version of the National CAD Standard," said Walter Marlowe, CSI's Executive Director. "NCS Version 4.0 will further streamline design, construction, and facility operations communication among all participants in the facility lifecycle. Better communication means fewer errors and lower costs for all disciplines."

"A current, widely used National CAD Standard is an essential part of NIBS' cooperative effort with AIA, CSI, and the buildingSMART Alliance to ensure an open, interoperable information format and communication environment-including integration into the new National Building Information Model Standard (NBIMS)-that will serve both the building community and the general public," said NIBS President David A. Harris, FAIA.

NCS Version 4.0 will benefit a wide range of industry stakeholders:
  • Owners and facility managers will benefit from a consistent appearance of drawing sets for all projects, reducing errors and change orders.

  • Designers will spend less time creating and maintaining in-house office standards.

  • Contractors will benefit from a consistent detail reference system.

  • Code officials will benefit from the consistent location of regulatory information in the drawing set and on specific individual sheets.

  • Manufacturers and suppliers will save time on price quotes and submittal review and approval.
The NCS incorporates three important components from the partnering organizations: AIA's CAD Layer Guidelines; Modules 1-8 of CSI's Uniform Drawing System; and NIBS' Introduction, Appendices, and Plotting Guidelines (all maintained and balloted by the NIBS NCS Project Committee).Combining these resources, the NCS prescribes CAD layer names, drawing set organization, drafting, notation, and plotting conventions. It adds an extensive symbols library and thousands of terms and abbreviations.

Over 5,000 workplaces have voluntarily adopted the NCS since its debut in 1999. Many federal agencies require NCS use and many private sector users have adopted it, including auto manufacturers, international shipping companies, national retailers and financial service providers. The NCS helps building designers, constructors and operators coordinate their efforts by classifying electronic design data consistently, easing information retrieval. 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 facility management applications.

To order NCS Version 4.0, visit www.nationalcadstandard.org.
About: Featured
Echelon Masonry Introduces Ashton Brick, Its Latest Line of Artisan Masonry Veneers
April 2025

Echelon Masonry, North America’s leader in architectural masonry products and materials, announces the availability of its newest product line of artisan masonry veneers, Ashton Brick, in select states. Combining a classic brick aesthetic with durable con

MCAA Showcases Innovation at North Florida Masonry Showcase
April 2025

On Friday, April 11th, we had the pleasure of representing the Mason Contractors Association of America and our Outreach and Education Division at the North Florida Masonry Showcase. This event welcomed 15 high school students who demonstrated their growi

Thank You For Bidding In The 2025 Online Auction
April 2025

The MCAA extends a huge thank you to everyone who bid in this year’s online auction. With hundreds of bids on over 150 items, this year’s auction was another huge success. We also want to thank all of our amazing donors who put items up for auction. Wit

Preparing Masonry Jobsites for Summer Weather
April 2025

Spring is in the air, and summer is right around the corner. With that in mind, it’s time for all of us in the masonry industry to start preparing for warmer weather. It is very important that we consider the risks associated with working in the summer he