| Rank | 
			Company | 
			2012 Convention Center Revenue ($) | 
		
		
			| 1 | 
			AECOM Technology Corp. | 
			$120,190,000 | 
		
		
			| 2 | 
			URS Corp. | 
			$7,789,187 | 
		
		
			| 3 | 
			Wiss, Janney, Elstner Associates | 
			$2,720,000 | 
		
		
			| 4 | 
			Syska Hennessy Group | 
			$1,296,118 | 
		
		
			| 5 | 
			Magnusson Klemencic Associates | 
			$1,234,230 | 
		
		
			| 6 | 
			Rolf Jensen & Associates | 
			$1,200,000 | 
		
		
			| 7 | 
			Dewberry | 
			$1,148,500 | 
		
		
			| 8 | 
			Aon Fire Protection Engineering | 
			$1,000,000 | 
		
		
			| 9 | 
			M-E Engineers | 
			$600,000 | 
		
		
			| 10 | 
			Arup | 
			$591,738 | 
		
		
			| 11 | 
			RMF Engineering Design | 
			$500,000 | 
		
		
			| 12 | 
			Smith Seckman Reid | 
			$419,529 | 
		
		
			| 13 | 
			TLC Engineering for Architecture | 
			$321,506 | 
		
		
			| 14 | 
			Barge, Waggoner, Sumner and Cannon | 
			$300,000 | 
		
		
			| 14 | 
			Michael Baker Jr. | 
			$300,000 | 
		
		
			| 16 | 
			Interface Engineering | 
			$260,761 | 
		
		
			| 17 | 
			CJL Engineering | 
			$259,857 | 
		
		
			| 18 | 
			TTG | 
			$256,100 | 
		
		
			| 19 | 
			Paulus, Sokolowski and Sartor | 
			$250,000 | 
		
		
			| 20 | 
			Degenkolb Engineers | 
			$178,151 | 
		
		
			| 21 | 
			Bridgers & Paxton Consulting Engineers | 
			$168,689 | 
		
		
			| 22 | 
			Sparling | 
			$153,884 | 
		
		
			| 23 | 
			Joseph R. Loring & Associates | 
			$150,000 | 
		
		
			| 24 | 
			GRAEF | 
			$143,034 | 
		
		
			| 25 | 
			Walter P Moore | 
			$139,742 | 
		
		
			| 26 | 
			Davis, Bowen & Friedel | 
			$113,683 | 
		
		
			| 27 | 
			Allen & Shariff | 
			$100,000 | 
		
		
			| 28 | 
			Ross & Baruzzini | 
			$69,038 | 
		
		
			| 29 | 
			Glumac | 
			$64,000 | 
		
		
			| 30 | 
			Thornton Tomasetti | 
			$51,523 | 
		
		
			| 31 | 
			CTLGroup | 
			$50,000 | 
		
		
			| 31 | 
			Dunham Associates | 
			$50,000 | 
		
		
			| 33 | 
			Vanderweil Engineers | 
			$42,100 | 
		
		
			| 34 | 
			Newcomb & Boyd | 
			$38,635 | 
		
		
			| 35 | 
			Science Applications International Corp. | 
			$37,724 | 
		
		
			| 36 | 
			Guernsey | 
			$37,718 | 
		
		
			| 37 | 
			Environmental Systems Design | 
			$29,496 | 
		
		
			| 38 | 
			Total Building Commissioning | 
			$21,832 | 
		
		
			| 39 | 
			Karpinski Engineering | 
			$20,052 | 
		
		
			| 40 | 
			Affiliated Engineers | 
			$14,000 | 
		
		
			| 41 | 
			Henderson Engineers | 
			$4,694 |