| Rank | Company | 2012 S+T Revenue ($) |
| 1 | Affiliated Engineers | $19,824,000 |
| 2 | Middough | $13,900,000 |
| 3 | URS Corp. | $11,772,124 |
| 4 | Bard, Rao + Athanas Consulting Engineers | $10,500,000 |
| 5 | RMF Engineering Design | $9,200,000 |
| 6 | Vanderweil Engineers | $7,851,900 |
| 7 | Paulus, Sokolowski and Sartor | $7,500,000 |
| 8 | WSP USA | $5,772,095 |
| 9 | Science Applications International Corp. | $3,103,152 |
| 10 | STV | $2,937,000 |
| 11 | Clark Nexsen | $2,911,405 |
| 12 | Haynes Whaley Associates | $2,303,235 |
| 13 | AKF Group | $2,000,000 |
| 14 | Syska Hennessy Group | $1,727,813 |
| 15 | CCRD Partners | $1,500,000 |
| 16 | Interface Engineering | $1,467,579 |
| 17 | Glumac | $1,332,000 |
| 18 | Rist-Frost-Shumway Engineering | $1,300,000 |
| 19 | Wiss, Janney, Elstner Associates | $1,120,000 |
| 20 | KJWW Engineering Consultants | $1,003,412 |
| 21 | KPFF Consulting Engineers | $1,000,000 |
| 22 | Rolf Jensen & Associates | $800,000 |
| 23 | Environmental Systems Design | $753,418 |
| 24 | RDK Engineers | $736,000 |
| 25 | Eaton Energy Solutions | $664,808 |
| 26 | Karpinski Engineering | $632,422 |
| 27 | Bergmann Associates | $607,000 |
| 28 | Mazzetti | $561,184 |
| 29 | Degenkolb Engineers | $494,831 |
| 30 | Henderson Engineers | $426,042 |
| 31 | Coffman Engineers | $400,000 |
| 32 | Walter P Moore | $345,245 |
| 33 | TTG | $320,000 |
| 34 | Thornton Tomasetti | $318,157 |
| 35 | TLC Engineering for Architecture | $311,623 |
| 36 | Aon Fire Protection Engineering | $300,000 |
| 37 | Sparling | $253,574 |
| 38 | OLA Consulting Engineers | $250,000 |
| 39 | Dunham Associates | $200,000 |
| 39 | M-E Engineers | $200,000 |
| 41 | CTLGroup | $100,000 |
| 41 | G&W Engineering | $100,000 |
| 43 | CJL Engineering | $64,964 |
| 44 | Spectrum Engineers | $58,546 |
| 45 | French & Parrello Associates | $50,000 |
| 46 | Allen & Shariff | $30,000 |
| 47 | Primera Engineers | $28,000 |
| 48 | FBA Engineering | $25,000 |
Back to the Science and Technology Sector Giants article
Read BD+C's full Giants 300 Report
Related Stories
| Aug 22, 2014
Spireworks app lets users control a piece of the New York skyline
Mark Domino, the son-in-law of developer Douglas Durst, has developed an app, called Spireworks, that allows anyone with a smartphone to change the color of a building's lights.
| Aug 21, 2014
Ranked: Top science and technology sector AEC firms [2014 Giants 300 Report]
HDR, Affiliated Engineers, and Skanska top BD+C's rankings of the nation's largest S+T sector design and construction firms.
| Aug 21, 2014
Ranked: Top convention center AEC firms [2014 Giants 300 Report]
Gensler, AECOM, and Hunt Construction top BD+C's rankings of the nation's largest convention center design and construction firms.
| Aug 21, 2014
Apartment construction hits 25-year high
The boost to apartment construction suggests that job gains are encouraging the creation of households.
| Aug 21, 2014
Strategies for providing great customer service
Customers are inherently inefficient and inconvenient to do business with, writes Customer Service Consultant Micah Solomon, in a recent Forbes post. That’s why he believes great customer service depends on understanding this. SPONSORED CONTENT
Sponsored | | Aug 21, 2014
Defining the measure of success when implementing new technologies
Sasha Reed and Chad Dorgan, McCarthy Building Cos.’s Vice President of Quality and Sustainability, discuss the keys to managing innovation within a large construction firm. SPONSORED CONTENT
| Aug 21, 2014
RTKL's parent company Arcadis acquires Callison
The acquisition of Callison, known predominantly for its leadership in retail and mixed-use design, builds on Arcadis’ strong global design and architecture position, currently provided by RTKL.
| Aug 21, 2014
Must See: Detroit's Beaux-Arts parking garage
An opulent Renaissance Revival building in downtown Detroit is being used as a parking garage.
| Aug 20, 2014
WELL Building: The next step in green sports construction
The WELL Building Standard, a new protocol that focuses on human wellness within the built environment, is a particularly good fit for sports facilities, write Skanska's Tom Tingle and Beth Heider.
| Aug 20, 2014
Seattle's King Street Station thoughtfully restored [2014 Reconstruction Awards]
After years of neglect and botched renovations, King Street Station sparkles once again.
