Contracting giant Parsons Corp., Pasadena, Calif., announced April 17 that it has signed a �merger agreement� with 3D/International, the Houston-based construction management and design firm. Terms of the agreement were not released but 3D/I will become a Parsons subsidiary.

The deal was announced by Chuck Harrington, president of Parsons Commercial Technology Group, and Chuck Thomsen, chairman of 3D/I.

�3D/I is a nationally respected leader in the design, condition assessment, and construction management of educational and public buildings and their systems,� says Harrington in the Parsons statement. �Its reputation for innovation will make an important contribution to the Parsons family of companies.�

Thomsen says 3D/I�s board has approved the deal but it remains subject to a shareholder vote, set for May 12. �Parsons will provide many additional skills to offer to our existing clients,� he says, in a statement. No additional details were released

Parsons reported revenue of about $3 billion in design and construction revenue in 2005; 3D/I had close to $100 million.