| Rank | Company | 2012 Total Revenue ($) |
| 1 | Jacobs Engineering Group | $2,715,210,000 |
| 2 | AECOM Technology Corp. | $1,610,390,000 |
| 3 | Parsons Brinckerhoff | $337,900,000 |
| 4 | URS Corp. | $314,266,757 |
| 5 | Buro Happold Consulting Engineers | $194,220,000 |
| 6 | Burns & McDonnell | $160,645,000 |
| 7 | Thornton Tomasetti | $124,575,393 |
| 8 | Science Applications International Corp. | $120,249,686 |
| 9 | Merrick & Co. | $103,998,000 |
| 10 | SSOE Group | $103,708,918 |
| 11 | Michael Baker Jr. | $88,880,000 |
| 12 | Day & Zimmermann | $85,898,442 |
| 13 | STV | $80,107,000 |
| 14 | Wiss, Janney, Elstner Associates | $75,000,000 |
| 15 | Dewberry | $72,755,906 |
| 16 | Simpson Gumpertz & Heger | $65,200,000 |
| 17 | Clark Nexsen | $62,273,849 |
| 18 | AKF Group | $62,000,000 |
| 19 | H&A Architects & Engineers | $43,335,401 |
| 20 | Middough | $41,000,000 |
| 21 | Walker Parking Consultants | $36,931,722 |
| 22 | Shive-Hattery | $34,263,616 |
| 23 | Barge, Waggoner, Sumner and Cannon | $30,700,000 |
| 24 | BRPH | $28,890,000 |
| 25 | Bergmann Associates | $25,398,000 |
| 26 | Hixson Architecture, Engineering, Interiors | 21,000,000 |
| 27 | Guernsey | 19,070,104 |
| 28 | Ross & Baruzzini | 16,705,127 |
| 29 | Paulus, Sokolowski and Sartor | 15,200,000 |
| 30 | GRAEF | 13,964,170 |
| 31 | Zak Companies | 13,814,233 |
| 32 | CJL Engineering | 12,992,858 |
| 33 | Spectrum Engineers | 10,890,075 |
| 34 | Davis, Bowen & Friedel | 10,777,296 |
| 35 | Gray | 10,454,722 |
| 36 | Stanley Consultants | 10,151,414 |
| 37 | Primera Engineers | 5,398,000 |
| 39 | GRW | 3,552,200 |
Read the Engineering Giants article
Read BD+C's full Giants 300 Report
Related Stories
| Aug 9, 2016
Top 100 University Architecture Firms
Gensler, Perkins+Will, and CannonDesign top Building Design+Construction’s annual ranking of the nation’s largest university sector architecture and A/E firms, as reported in the 2016 Giants 300 Report.
Reconstruction & Renovation | Aug 9, 2016
Renascent architecture: Demolished Frank Lloyd Wright structures get new life
The Frank Lloyd Wright Revival Initiative is set to begin its reconstruction efforts with the Banff Pavilion, which was demolished in 1939.
Building Team | Aug 4, 2016
Thought leaders from architecture, engineering and construction to meet at 2016 Bluebeam eXtreme Conference
Bluebeam users inspire technological change through shared insights and training at three-day event.
| Aug 4, 2016
MULTIFAMILY BUILDING GIANTS: Rental complexes focus on affordability, accessibility, and specialty amenities
To address the affordability problem and attract tenants, owners and developers are experimenting with smaller and smaller units, amenity-rich environments, and “co-living” concepts.
| Aug 4, 2016
Top 110 Multifamily Architecture Firms
Perkins Eastman, CallisonRTKL, and Solomon Cordwell Buenz top Building Design+Construction’s annual ranking of the nation’s largest multifamily building sector architecture and A/E firms, as reported in the 2016 Giants 300 Report.
| Aug 3, 2016
GREEN BUILDING GIANTS: Sustainability leaders turn to wellness and technology to get an edge
AEC leaders in green building are stepping up to a higher level of innovation and to be a green leader today, you have to dig deeper into data.
| Aug 2, 2016
Top 130 Green Building Architecture Firms
Gensler, Stantec, and HOK top Building Design+Construction’s annual ranking of the nation’s largest green building sector architecture and A/E firms, as reported in the 2016 Giants 300 Report.
Architects | Aug 2, 2016
Bradley Lukanic named CannonDesign's CEO
In his new role, Lukanic takes helm of an experienced leadership team crafting and achieving optimal short- and long-term strategies and business outcomes
| Aug 1, 2016
K-12 SCHOOL GIANTS: In a new era of K-12 education, flexibility is crucial to design
Space flexibility is critical to classroom design. Spaces have to be adaptable, even allowing for drastic changes such as a doubling of classroom size.
| Jul 29, 2016
AIRPORT FACILITIES GIANTS: Airports binge on construction during busy year for travel
Terminal construction will grow by nearly $1 billion this year, and it will keep increasing. Airports are expanding and modernizing their facilities to keep passengers moving.
