GSA and Bentley Collaborate on New GSA BIM Guide

Build As One

25 September 2007

Guide Helps Designers Developing Final Concept Designs Meet New GSA Minimum Requirements for Spatial Program IFC BIM Submissions

EXTON, Pa. – The U.S. General Services Administration (GSA) and Bentley Systems, Incorporated today announced that Bentley collaborated with GSA on the development of “The Building Information Modeling (BIM) Guide Series 02 – Spatial Validation Program.” The guide helps designers developing Final Concept designs for GSA’s Public Buildings Services (PBS) meet GSA’s spatial program BIM minimum requirements. The requirements include the submission of a BIM Industry Foundation Class (IFC) model as defined by the buildingSMART organization of the National Institute of Building Sciences (NIBS).

During the development of the new GSA BIM guide, Bentley and Heery International’s architecture and engineering team implemented a project for GSA. “We were excited to be able to help Bentley Architecture meet GSA’s BIM spatial program requirements,” said Gordon Smith, Heery International vice president, director of architecture. “Thanks to this process, we can easily incorporate BIM as part of our workflow. We’ve found significant efficiencies in engineering, section coordination, and discipline coordination.”

Brad Workman, Bentley vice president, Global Building and Plant Solutions, said, “The success of Bentley’s solutions on this project substantiated that, as an interoperable BIM exchange strategy, IFC is directly applicable to GSA’s requirements today. The project provided an important set of guidelines that will help AEC firms in their efforts to secure new business from the federal government, and will support GSA’s use of BIM to more efficiently and accurately assess design performance.”

Workman continued, “At the same time, the project clearly demonstrated Bentley Architecture’s strong support of interoperable workflows by delivering a compliant IFC model, fully meeting GSA’s spatial program BIM requirements.”

GSA, which owns more than 350 million square feet of space, believes that validating architecture and engineering designs at Concept Design is a big step towards better space management. It began validating spatial programs using BIM in fiscal year 2007.

In the past, GSA validated spatial programs using manually created 2D polygons in plan drawings during early design stages. But this proved to be time consuming and led to discrepancies when GSA’s spatial data management team measured and reported on the actual building spaces for rent calculations.

By using BIM, GSA can automate the spatial validation process to ensure that all designs in the Final Concept phase adhere to the spatial requirements established by the housing plan and PBS business assignment guide. GSA will also use this analysis to benchmark performance and generate measurement reports based upon equivalent space types and building type.

During the development of the new GSA BIM guide, Bentley:

  • Successfully completed the spatial validation program detailed in the guide by ensuring that Bentley Architecture design models managed the required data and produced a compliant IFC model.
  • Used Bentley Architecture to complete a project for GSA, in conjunction with Heery International, that consisted of modeling the 1800 F Street GSA Central Office – a nine-story building with 1.1 million square feet of office space. The IFC2x2-compliant model defined more than 3000 spaces. 
  • Created an Adobe PDF of the 3D space model to facilitate distribution and communication of the model’s facets to other project stakeholders. This interactive 3D PDF featured user-controlled dynamic sectioning. 
  • Illustrated the benefits of interoperability between Bentley Architecture and Google Earth™ by exporting a geospatially located 3D model in the native Google Earth KML/KMZ format of the 1800 F Street facility properly sited in downtown Washington, D.C.
  • Proved that GSA’s requirements for spatial program BIM submissions can be easily met with Bentley Architecture.

GSA continues to take a vendor-neutral position on the use of BIM for spatial program submissions for PBS and does not require or advocate the use of any specific BIM application. Its only requirement for spatial validation is the delivery of a compliant IFC model such as that delivered by Bentley Architecture.

For more information about Bentley’s BIM solutions and its support of GSA’s BIM requirements, go to For information about GSA’s National 3D-4D-BIM Program, go to

About Heery International

Heery International is a full-service architecture, interior design, engineering, facility management, program management, and construction management firm with more than 1000 professionals located throughout the United States and overseas, a history of stable leadership, and annual revenues of approximately $400 million. Heery is ranked annually among the leading professional services firms by industry publications such as Engineering News-Record, World Architecture, and Building Design & Construction. For more information, visit

About the U.S. General Services Administration

GSA’s mission is to “help federal agencies better serve the public by offering, at best value, superior workplaces, expert solutions, acquisition services and management policies.” GSA consists of the Federal Acquisition Service (FAS), the Public Buildings Service (PBS), and various staff offices, including the Office of Governmentwide Policy (OGP). Eleven regional offices extend GSA’s outreach to federal customers nationwide. These offices are located in Boston, New York, Philadelphia, Atlanta, Chicago, Kansas City, Fort Worth, Denver, San Francisco, Auburn (Washington), and Washington, D.C.

Approximately 13,000 GSA employees provide valuable support to other federal agencies and, in some cases, the general public. GSA is the government’s “landlord,” meeting office and other space requirements of the federal workforce. It is also the premier federal acquisition and procurement force offering equipment, supplies, telecommunications, and integrated information technology solutions to customer agencies. GSA also plays a key role in developing and implementing policies that affect many government agencies and helps other federal agencies improve their service to and communication with the public by offering effective citizen-response tools and services. For more information, visit

About Bentley

Bentley Systems, Incorporated provides software for the lifecycle of the world’s infrastructure. The company’s comprehensive portfolio for the building, plant, civil, and geospatial verticals spans architecture, engineering, construction (AEC) and operations. With revenues now surpassing $400 million annually, and more than 2400 colleagues globally, Bentley is the leading provider of AEC software to the Engineering News-Record Top Design Firms and major owner-operators, and was named the world’s No. 2 provider of GIS/geospatial software solutions in a recent Daratech research study.

To receive Bentley press releases as they are issued, visit For more information, visit To view a copy of Bentley’s April 2007 Annual Report online, go to

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Bentley, the “B” logo, and Bentley Architecture are either registered or unregistered trademarks or service marks of Bentley Systems, Incorporated or one of its direct or indirect wholly-owned subsidiaries. Google Earth is a trademark of Google Inc. All other brands and product names are trademarks of their respective owners.

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