The Skyscraper Center

United States

North America

United States CTBUH Members

Name	City	Level	# of 150m+ buildings	Fields Of Expertise ACAD: Academic / University ARCH: Architecture BACS: Building Automation Control Systems BMNT: Building Maintenance CIV: Civil Engineering COMP: Computers / IT / Software CON: Construction / Contractor COST: Cost Consulting DEV: Developer ENGO: Engineering, Other ENVE: Environmental Engineering ENVP: Environmental Protection FAC: Façade Design / Engineering FIN: Financial Industry FIRE: Fire Engineering GEO: Geotechnic / Foundations HIST: Historical Preservation INSU: Insurance / Risk INTR: Interior Design LAND: Landscape Architecture LEGL: Legal MRKT: Marketing / Sales MATR: Materials / Products / Systems Supplier MEP: Mechanical, Electrical & Plumbing NONP: Non-Profit Org. / Assoc. / Gov't OWN: Owner (Buildings, Land) PMNG: Project Management PROP: Property Management RES: Research Institute SEC: Security Consultancy SEIS: Seismic Design STRC: Structural Engineering SURV: Surveying TRAN: Transportation / Urban Infrastructure URB: Urban Design VERC: Vertical Transportation Consultant WIND: Wind Engineering OTHR: Other FACS: Façade Systems VERS: Vertical Transportation Supplier ENGM: Engineering, Multi-discipline
Arup	Abu Dhabi	Platinum	350	CIV • STRC • WIND • ENVE • PMNG • COST • FAC • FIRE • MEP • VERC
DeSimone Consulting Engineers	New York City	Platinum	47	STRC • ENGO
Dow	Midland	Platinum	6	MATR
HOK, Inc.	New York City	Platinum	79	INTR • STRC • URB • ARCH • FIN • PMNG • COST • ENGM • FAC • FACS • HIST • SEIS
Illinois Institute of Technology	Chicago	Platinum	0	ACAD • RES
Kohn Pedersen Fox Associates	New York City	Platinum	213	INTR • URB • ARCH • HIST • TRAN
Langan Engineering	London	Platinum	94	CIV • LAND • ENVE • GEO • SEIS
New Land Enterprises	Milwaukee	Platinum	0	DEV
Otis Elevator Company	Hartford	Platinum	0	MATR • VERC
Skidmore, Owings & Merrill	Chicago	Platinum	321	CIV • INTR • LAND • STRC • URB • ARCH • ENVE • MRKT • MEP • TRAN
Thornton Tomasetti, Inc.	Atlanta	Platinum	135	CIV • STRC • URB • ARCH • ENVE • PMNG • COMP • ENGM • ENGO • FAC • FACS • FIRE • GEO • HIST • INSU • MEP • SEC • SEIS • TRAN
Turner Construction Company	New York City	Platinum	57	PMNG • CON
Walters Group Inc.	Asheville	Platinum	21	CON
WSP UK Limited	Chicago	Platinum	92	CIV • INTR • STRC • URB • ENVP • PMNG • COMP • ENGO • FAC • FIRE • GEO • MEP • TRAN
Adrian Smith + Gordon Gill Architecture	Chicago	Gold	40	INTR • URB • ARCH
AI SpaceFactory	New York City	Gold	0	ARCH • COMP • ENGM
AKF Group LLC	New York City	Gold	19	COMP • ENGO • FIRE • MEP • OTHR • PROP
Brandston Partnership, Inc.	Beijing	Gold	68	INTR • LAND • ARCH • FAC
Council on Tall Buildings and Urban Habitat	Chicago	Gold	0	NONP
DCI Engineers	Seattle	Gold	4	STRC • SEIS
Gensler	Chicago	Gold	103	INTR • URB • ARCH • COST • MRKT
Giarratana, LLC	Nashville	Gold	3	DEV
Goettsch Partners	Chicago	Gold	52	ARCH
Magnusson Klemencic Associates	Seattle	Gold	79	CIV • STRC • WIND • SEIS
McNamara • Salvia	Boston	Gold	20	STRC • WIND • ENGO • SEIS
NBBJ	New York City	Gold	61	INTR • LAND • ARCH • MRKT
Nucor Corporation	Chicago	Gold	3	MATR
Pelli Clarke Pelli Architects	New Haven	Gold	52	INTR • URB • ARCH
Perkins & Will	Chicago	Gold	9	INTR • LAND • URB • ARCH • HIST
POHL Facade Division	Cologne	Gold	33	ARCH • FAC • FACS
Rider Levett Bucknall	Beijing	Gold	80	PMNG • COST • SURV
RWDI	Guelph	Gold	298	WIND • ENVE • ENGO
Severud Associates Consulting Engineers, PC	New York City	Gold	16	STRC
SilverEdge Systems Software, Inc.	Chicago	Gold	0	COMP
SL Green Realty Corp.	New York City	Gold	7	DEV • OWN • PROP
SLS Consulting, Inc.	Atlanta	Gold	1	CON • FIRE • INSU
Stantec	Abu Dhabi	Gold	11	CIV • INTR • LAND • STRC • URB • ARCH • ENVE • ENGM • FIRE • SEIS • TRAN
Think Wood	Portland	Gold	0	ARCH • MRKT • NONP
3MIX	Seattle	Silver	0	ARCH
ADG Engineering	New York City	Silver	0	INTR • STRC • ARCH • ENGO
Adjustable Concrete Construction	Chicago	Silver	2	PMNG • CON • MATR
Alchemy Properties	New York City	Silver	1	DEV
Algin Management	New York City	Silver	1	PROP
Alvine Engineering	Omaha	Silver	7	ENGO • FIRE • MEP
AMSYSCO	Chicago	Silver	34	ENGO • MATR
ArcelorMittal	Chicago	Silver	95	BACS • MATR
Archilier Architecture	New York City	Silver	6	INTR • URB • ARCH
Architects Hawaii Limited - AHL	Honolulu	Silver	0	INTR • URB • ARCH
ARK Studio Inc.	Mumbai	Silver	7	INTR • URB • ARCH
Autodesk	San Francisco	Silver	0	COMP
BALA Engineers	Philadelphia	Silver	9	STRC • ENVE • ENGO • FIRE • MEP • SEC
Baldridge & Associates Structural Engineering	Honolulu	Silver	1	STRC • WIND • ENGO • HIST • INSU • SEIS • SURV
Barker Mohandas, LLC	New York City	Silver	41	VERC
Baumann Consulting	Chicago	Silver	2	ARCH • ENGM
Bedrock Detroit	Detroit	Silver	2	DEV
Bjarke Ingels Group	Copenhagen	Silver	15	STRC • URB • ARCH
bKL Architecture	Chicago	Silver	10	INTR • URB • ARCH
BKV Group	Minneapolis	Silver	0	INTR • LAND • ARCH • ENGM
Carrier Johnson + Culture	San Diego	Silver	0	ARCH
Cary Kopczynski & Company	Seattle	Silver	0	STRC • SEIS
Cast Connex	Dallas	Silver	4	MATR
CB Engineers	San Francisco	Silver	4	COMP • COST • FIRE • MEP
CDC Curtain Wall Design & Consulting, Inc.	Dallas	Silver	11	STRC • WIND • COST • ENGO • FAC • LEGL
Cerami & Associates, Inc.	New York City	Silver	25	ENGO • MATR • OTHR
CetraRuddy	New York City	Silver	11	ARCH
Charrette Creative	New York City	Silver	0	MRKT
Code Consultants, Inc.	Los Angeles	Silver	46	ENGO • FIRE • SEC
Construction Specialties Company	Lebanon	Silver	2	MATR
COOKFOX Architects	New York City	Silver	2	INTR • URB • ARCH
Cosentini Associates	New York City	Silver	100	ENVE • COMP • FIRE • MEP
Coughlin Porter Lundeen	Seattle	Silver	1	CIV • STRC • SEIS
Cove Property Group	New York City	Silver	0	DEV • OWN
CPP Wind Engineering and Air Quality Consultants	Fort Collins	Silver	28	WIND • ENVE • LEGL
Crescent Heights	Miami	Silver	6	INTR • DEV • PROP
Degenkolb Engineers	San Francisco	Silver	1	SEIS
DLR Group	Seattle	Silver	12	INTR • URB • ARCH • ENGM
Edgett Williams Consulting Group, Inc.	Mill Valley	Silver	17	VERC
Enclos Corp.	Los Angeles	Silver	41	PMNG • FAC • MATR
Ennead Architects	New York City	Silver	1	INTR • URB • ARCH
Environmental Systems Design, Inc.	Chicago	Silver	33	BACS • COST • FIRE • MEP
Epstein	Chicago	Silver	6	CIV • STRC • ARCH
Extell Development	New York City	Silver	13	DEV • OWN • PROP
Far East Aluminium Works Co., Ltd.	Concord	Silver	0	STRC • PMNG • FAC • MATR
Fisher Marantz Stone	New York City	Silver	20	OTHR
FitzGerald Associates	Chicago	Silver	1	ARCH
FM Global	Boston	Silver	0	INSU
Foster + Partners	London	Silver	99	ARCH
Front Inc.	Hong Kong	Silver	25	FAC
FullStack Modular LLC	New York City	Silver	0	CON • MATR
FXCollaborative Architects	New York City	Silver	5	INTR • URB • ARCH
GEI Consultants	Boston	Silver	14	GEO
GenX Design & Technology Consulting	New York City	Silver	2	COMP
GERB Vibration Control Systems	Berlin	Silver	18	MATR • SEIS
GGLO	Los Angeles	Silver	1	INTR • LAND • URB • ARCH
Gilsanz Murray Steficek	New York City	Silver	10	STRC • ENGO • SEC
Glotman Simpson Consulting Engineers	Calgary	Silver	3	STRC • SEIS
Glumac	San Francisco	Silver	2	ENGO • MEP
GREC Architects	Chicago	Silver	2	ARCH
Hathaway Dinwiddie Construction Company	San Francisco	Silver	2	CON
HDR Inc.	New York City	Silver	0	ARCH
HEARST	New York City	Silver	1	OWN
Heintges Consulting Architects & Engineers	New York City	Silver	5	FAC
Heller Manus Architects	San Francisco	Silver	4	URB • ARCH • TRAN
Hill International	Abu Dhabi	Silver	27	FIN • PMNG • CON • COST • INSU • LEGL
Hilson Moran	Cambridge	Silver	8	WIND • BACS • ENVE • FIRE • MEP • PROP • SEC • VERC
Hines	Houston	Silver	26	DEV • FIN • COST • PROP
HKA Elevator Consulting	Los Angeles	Silver	3	VERC
HKS Architects	Dallas	Silver	27	INTR • URB • ARCH
Humphreys & Partners Architects, L.P.	Dallas	Silver	1	CIV • INTR • LAND • URB • ARCH
Inhabit Group	Auckland	Silver	33	FAC
Innovative Safety Solutions INC	Tampa	Silver	0	MATR
JAHN	Chicago	Silver	10	INTR • URB • ARCH
James McHugh Construction Co.	Chicago	Silver	22	CON
Jaros, Baum & Bolles	New York City	Silver	69	BACS • PMNG • ENGM • FIRE • HIST • MEP • SEC
Jay Paul Company	San Francisco	Silver	1	DEV • OWN
JCE Structural Engineering Group	Pasadena, CA	Silver	0	STRC • SEC • SEIS
Jensen Hughes	Chicago	Silver	6	FIRE
KieranTimberlake	Philadelphia	Silver	0	URB • ARCH
Kinemetrics	Pasadena, CA	Silver	43	MATR • OTHR • SEIS
Korb + Associates Architects	Milwaukee	Silver	0	ARCH
Korda/Nemeth Engineering	Columbus	Silver	0	ENGM
Kuraray	Wilmington	Silver	7	COMP • MATR
LeMessurier	Boston	Silver	28	STRC • WIND • FAC • FACS • HIST • SEIS
Lendlease	Chicago	Silver	29	DEV • FIN • PMNG • CON
LERA Consulting Structural Engineers	New York City	Silver	11	STRC • WIND • SEIS
Lerch Bates, Inc.	Littleton	Silver	62	FAC • MATR • VERC
LMN Architects	Seattle	Silver	2	INTR • URB • ARCH • TRAN
Longman Lindsey	New York City	Silver	4	BMNT • MEP
Magellan Development Group	Chicago	Silver	12	ARCH • DEV • OWN
Martin/Martin	Denver	Silver	3	CIV • STRC • SURV
MBCC-GROUP (Master Builders Solutions US LLC)	New York City	Silver	1	MATR
Meyer Borgman Johnson	Minneapolis	Silver	3	STRC
MEYERS+ ENGINEERS	San Francisco	Silver	0	ARCH • ENGO • MEP
Michael Blades & Associates	Washington D.C.	Silver	0	VERC
Mueser Rutledge Consulting Engineers	New York City	Silver	12	GEO
MZA Architecture	Bellevue	Silver	1	ARCH
Nabih Youssef & Associates	Los Angeles	Silver	3	STRC • SEIS
National Real Estate Development	Philadelphia	Silver	0	DEV
O'Donnell & Naccarato	Philadelphia	Silver	1	STRC • FACS
OJB Landscape Architecture	Boston	Silver	17	LAND
OLYMPIQUE Façade Access Consulting	Los Angeles	Silver	6	BMNT • FACS
Optima Inc.	Chicago	Silver	1	ARCH • DEV
Osborn Engineering	Columbus	Silver	1	ENGM
PAN Partners	New York City	Silver	0	STRC • ARCH • PMNG • ENGO • LEGL
Pavarini McGovern	New York City	Silver	4	CON
Peckar & Abramson, P.C.	New York City	Silver	0	CON • LEGL
Pei Cobb Freed & Partners	New York City	Silver	26	INTR • URB • ARCH
Pepper Construction	Chicago	Silver	0	CON
Pickard Chilton Architects, Inc.	New Haven	Silver	20	INTR • URB • ARCH
Pierce Engineers, Inc.	Chicago	Silver	0	STRC
Portman Architects	Atlanta	Silver	3	ARCH
Prudential Center	Boston	Silver	12	DEV • OWN • PROP
Rafael Viñoly Architects	New York City	Silver	13	INTR • URB • ARCH
Reiser + Umemoto RUR Architecture	New York City	Silver	0	ARCH
Rhode Partners	Austin	Silver	1	INTR • URB • ARCH
Riverside Investment & Development	Chicago	Silver	3	DEV
Robert A.M. Stern Architects	New York City	Silver	17	INTR • URB • ARCH
Royal Institution of Chartered Surveyors (RICS)	Birmingham	Silver	0	SURV
Safdie Architects	Somerville	Silver	18	INTR • URB • ARCH
Salas O'Brien	Atlanta	Silver	16	CIV • STRC • ARCH • BACS • FIRE • HIST • MEP
SHoP Architects	New York City	Silver	17	ARCH
SLCE Architects	New York City	Silver	53	ARCH
SOH Wind Engineering LLC	Kuala Lumpur	Silver	0	WIND
Solomon Cordwell Buenz - SCB	Chicago	Silver	34	INTR • URB • ARCH • HIST
Sowlat Structural Engineers	Chicago	Silver	1	STRC
Spiritos Properties LLC	New York City	Silver	0	DEV
Stanley D. Lindsey and Associates, Ltd.	Atlanta	Silver	4	STRC • WIND • SEIS
Studio Gang Architects	Chicago	Silver	4	INTR • URB • ARCH
SWA Group	Sausalito	Silver	44	LAND • URB
Swinerton	San Francisco	Silver	0	CON
Syska Hennessy Group	San Francisco	Silver	17	MEP • SEC • VERC
Telgian Engineering & Consulting, LLC	Atlanta	Silver	0	FIRE • SEC
Terracon	Naperville	Silver	4	GEO • OTHR
Tetra Tech	Pasadena, CA	Silver	0	ENGM
The Harman Group	Philadelphia	Silver	4	STRC
TLC Engineering Solutions	Chicago	Silver	2	STRC • FIRE • HIST • MEP • SEC
Tobin, PLLC	Charlotte	Silver	0	INTR • ARCH • PMNG • FAC • HIST
Van Deusen & Associates - VDA	Atlanta	Silver	17	VERC
Vanderweil Engineers	Boston	Silver	4	MEP
W.E. O'Neil Construction Co.	Chicago	Silver	0	CON
Walter P Moore	Atlanta	Silver	35	STRC • FAC • HIST • SEIS
Werner Sobek AG	Berlin	Silver	5	STRC • ARCH • ENVE • FAC • TRAN
Zinwave	Dallas	Silver	1	MATR
Ornamental Metal Institute of New York	New York City	Silver	0	MATR • NONP
Steel Institute of New York	New York City	Silver	0	MATR • NONP
PEI Architects	New York City	Silver	1	ARCH
Sentient Law, Ltd.	Chicago	Silver	0	LEGL
CCHRB (Chicago Committee on High-Rise Buildings)	Chicago	Media Institute/Association	0	NONP
Fire Equipment Manufacturers' Association (FEMA)	Cleveland	Media Institute/Association	0	FIRE • MATR
International Code Council	Washington D.C.	Media Institute/Association	0	ENGO • NONP
NAIMA	Washington D.C.	Media Institute/Association	0	MATR • NONP
Pennsylvania State University	State College	Media Institute/Association	0	ACAD
Post-Tensioning Institute	Detroit	Media Institute/Association	0	CIV
Pratt Institute	New York City	Media Institute/Association	0	ACAD
The Skyscraper Museum	New York City	Media Institute/Association	0	NONP
University of Illinois at Urbana-Champaign	Urbana	Media Institute/Association	0	ACAD • RES
Yale University School of Architecture	New Haven	Media Institute/Association	0	ACAD