| Rank | Company | 2013 Engineering Revenue ($) |
| 1 | Fluor Corporation | 585,150,000 |
| 2 | Arup | 136,464,506 |
| 3 | Day & Zimmermann | 130,576,072 |
| 4 | WSP Group | 124,400,000 |
| 5 | Affiliated Engineers | 104,121,000 |
| 6 | KPFF Consulting Engineers | 94,025,000 |
| 7 | Syska Hennessy Group | 93,902,508 |
| 8 | Vanderweil Engineers | 80,334,000 |
| 9 | Simpson Gumpertz & Heger | 71,640,000 |
| 10 | AKF Group | 67,487,000 |
| 11 | Henderson Engineers | 67,409,108 |
| 12 | KJWW Engineering Consultants | 53,874,750 |
| 13 | Smith Seckman Reid | 52,919,312 |
| 14 | M-E Engineers | 48,288,000 |
| 15 | Glumac | 48,000,283 |
| 16 | BR+A Consulting Engineers | 46,000,000 |
| 17 | Magnusson Klemencic Associates | 45,348,511 |
| 18 | Environmental Systems Design | 45,000,000 |
| 19 | TTG | 44,444,960 |
| 20 | Rolf Jensen & Associates | 39,000,000 |
| 21 | Walter P Moore and Associates | 38,940,592 |
| 22 | RDK Engineers | 34,850,000 |
| 23 | TLC Engineering for Architecture | 34,807,545 |
| 24 | DeSimone Consulting Engineers | 34,571,250 |
| 25 | CCRD Partners | 30,200,000 |
| 26 | Coffman Engineers | 28,585,725 |
| 27 | Aon Fire Protection Engineering Corp. | 27,490,000 |
| 28 | Interface Engineering | 25,717,364 |
| 29 | Bala Consulting Engineers | 25,300,000 |
| 30 | I. C. Thomasson Associates | 25,210,000 |
| 31 | Degenkolb Engineers | 23,900,548 |
| 32 | Heapy Engineering | 23,293,500 |
| 33 | Mazzetti | 23,217,528 |
| 34 | Robins & Morton | 21,485,080 |
| 35 | Sparling | 20,957,107 |
| 36 | M/E Engineering | 20,665,840 |
| 37 | KCI Technologies | 18,500,000 |
| 38 | Martin/Martin | 18,488,764 |
| 39 | Joseph R. Loring & Associates | 17,500,000 |
| 40 | Bridgers & Paxton Consulting Engineers | 16,869,537 |
| 41 | KLH Engineers | 16,031,680 |
| 42 | Dunham Associates | 16,000,000 |
| 43 | Wallace Engineering | 14,335,000 |
| 44 | Karpinski Engineering | 14,224,790 |
| 45 | ThermalTech Engineering | 13,600,000 |
| 46 | GHT Limited | 13,260,000 |
| 47 | French & Parrello Associates | 12,518,105 |
| 48 | P2S Engineering | 12,443,860 |
| 49 | Spectrum Engineers | 11,515,076 |
| 50 | CJL Engineering | 10,875,000 |
| 51 | Zak Companies | 9,776,949 |
| 52 | Allen & Shariff | 9,606,286 |
| 53 | Brinjac Engineering | 7,690,671 |
| 54 | Wick Fisher White | 7,442,544 |
| 55 | OLA Consulting Engineers | 6,239,000 |
| 56 | Kamm Consulting | 5,023,662 |
| 57 | G&W Engineering Corp. | 2,757,700 |
| 58 | Total Building Commissioning | 762,246 |
| 59 | Yates Companies, The | 500,000 |
Read the Engineering Giants article
Read BD+C's full 2014 Giants 300 Report
Related Stories
| Jul 18, 2013
Top Government Sector Construction Firms [2013 Giants 300 Report]
Clark Group, Turner, PCL head Building Design+Construction's 2013 ranking of the largest government sector contractors and construction management firms in the U.S.
| Jul 18, 2013
Top Government Sector Engineering Firms [2013 Giants 300 Report]
Fluor, URS, AECOM top Building Design+Construction's 2013 ranking of the largest government sector engineering and engineering/architecture firms in the U.S.
| Jul 18, 2013
Top Government Sector Architecture Firms [2013 Giants 300 Report]
Stantec, HOK, HDR top Building Design+Construction's 2013 ranking of the largest government sector architecture and architecture/engineering firms in the U.S.
| Jul 18, 2013
GSA regains stature under Tangherlini, who looks to trim its holdings, cut energy costs [2013 Giants 300 Report]
Over the past 15 months, Acting GSA Administrator Dan Tangherlini has done a creditable job of restoring the agency’s standing with Congress and the public.
| Jul 2, 2013
LEED v4 gets green light, will launch this fall
The U.S. Green Building Council membership has voted to adopt LEED v4, the next update to the world’s premier green building rating system.
| Jul 1, 2013
Report: Global construction market to reach $15 trillion by 2025
A new report released today forecasts the volume of construction output will grow by more than 70% to $15 trillion worldwide by 2025.
| Jun 28, 2013
Building owners cite BIM/VDC as 'most exciting trend' in facilities management, says Mortenson report
A recent survey of more than 60 building owners and facility management professionals by Mortenson Construction shows that BIM/VDC is top of mind among owner professionals.
| Jun 5, 2013
USGBC: Free LEED certification for projects in new markets
In an effort to accelerate sustainable development around the world, the U.S. Green Building Council is offering free LEED certification to the first projects to certify in the 112 countries where LEED has yet to take root.
| Jun 3, 2013
Construction spending inches upward in April
The U.S. Census Bureau of the Department of Commerce announced today that construction spending during April 2013 was estimated at a seasonally adjusted annual rate of $860.8 billion, 0.4 percent above the revised March estimate of $857.7 billion.
| May 20, 2013
4 emerging trends in parking structure design
Survey of parking professionals reveals how technology is transforming the parking industry.
