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	378	CIV • STRC • WIND • ENVE • PMNG • COST • FAC • FIRE • MEP • VERC
DeSimone Consulting Engineers	New York City	Platinum	49	STRC • ENGO
Dow	Midland	Platinum	6	MATR
HOK, Inc.	New York City	Platinum	82	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	228	INTR • URB • ARCH • HIST • TRAN
Langan Engineering	Athens	Platinum	98	CIV • LAND • ENVE • ENGM • GEO • SEIS • SURV
New Land Enterprises	Milwaukee	Platinum	0	DEV
Otis Elevator Company	Hartford	Platinum	133	MATR • VERC
Skidmore, Owings & Merrill	Chicago	Platinum	342	CIV • INTR • LAND • STRC • URB • ARCH • ENVE • MRKT • MEP • TRAN
Thornton Tomasetti, Inc.	Atlanta	Platinum	145	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	60	PMNG • CON
WSP	Chicago	Platinum	134	CIV • INTR • STRC • URB • ENVP • PMNG • COMP • ENGO • FAC • FIRE • GEO • MEP • TRAN
Adrian Smith + Gordon Gill Architecture	Chicago	Gold	41	INTR • URB • ARCH
Aedas	Abu Dhabi	Gold	111	INTR • LAND • URB • ARCH
AXA IM Alts	London	Gold	3	DEV
Brandston Partnership, Inc.	New York City	Gold	85	ARCH • ENGM • ENGO
DCI Engineers	Seattle	Gold	4	STRC • SEIS
Gensler	Chicago	Gold	107	INTR • URB • ARCH • COST • MRKT
Giarratana, LLC	Nashville	Gold	5	DEV
Goettsch Partners	Chicago	Gold	56	ARCH
Magnusson Klemencic Associates	Seattle	Gold	79	CIV • STRC • WIND • SEIS
McNamara • Salvia	Boston	Gold	20	STRC • WIND • ENGO • SEIS
Mott MacDonald	London	Gold	9	PMNG • ENGM • TRAN
NBBJ	New York City	Gold	61	INTR • LAND • ARCH • MRKT
Nucor Corporation	Chicago	Gold	5	MATR
PCL Construction	Denver	Gold	25	CON
Pelli Clarke & Partners	New Haven	Gold	26	INTR • URB • ARCH
Perkins & Will	Chicago	Gold	11	INTR • LAND • URB • ARCH • HIST
Pickard Chilton Architects, Inc.	New Haven	Gold	20	INTR • URB • ARCH
POHL Facade Division	Cologne	Gold	33	ARCH • FAC • FACS
Rider Levett Bucknall	Beijing	Gold	83	PMNG • COST • SURV
Rise Global LLC	Chicago	Gold	0	STRC • WIND • SEIS
RWDI	Guelph	Gold	310	WIND • ENVE • ENGO
Severud Associates Consulting Engineers, PC	New York City	Gold	16	STRC
Shalom Baranes Associates	Washington D.C.	Gold	0	ARCH
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	0	CON • FIRE • INSU
Stantec	Abu Dhabi	Gold	22	CIV • INTR • LAND • STRC • URB • ARCH • ENVE • ENGM • FIRE • SEIS • TRAN
Think Wood	Portland	Gold	0	ARCH • MRKT • NONP
360 Chicago	Chicago	Silver	1	MRKT
3MIX	Seattle	Silver	2	ARCH
ADG Engineering	New York City	Silver	0	INTR • STRC • ARCH • ENGO
Adjustable Concrete Construction	Chicago	Silver	2	PMNG • CON • MATR
AI. PlanetWorks	New York City	Silver	7	ARCH
AKAIA Architecture	New York City	Silver	6	INTR • URB • ARCH
Alderson Engineering, Inc.	Philadelphia	Silver	1	ENGM
Algin Management	New York City	Silver	1	PROP
Altair Engineering	Detroit	Silver	1	COMP
AMSYSCO	Chicago	Silver	35	ENGO • MATR
ArcelorMittal	Chicago	Silver	94	BACS • MATR
Architects Hawaii Limited - AHL	Honolulu	Silver	0	INTR • URB • ARCH
ARK Studio Inc.	Mumbai	Silver	7	INTR • URB • ARCH
Aspen Heights Partners	Austin	Silver	1
Autodesk	San Francisco	Silver	0	COMP
BALA Engineers	Philadelphia	Silver	9	STRC • ENVE • ENGO • FIRE • MEP • SEC
Baldridge & Associates Structural Engineering	Honolulu	Silver	2	STRC • WIND • ENGO • HIST • INSU • SEIS • SURV
Barker Mohandas, LLC	New York City	Silver	39	VERC
Baumann Consulting	Chicago	Silver	2	ARCH • ENGM
Bedrock Detroit	Detroit	Silver	2	DEV
Bjarke Ingels Group	Copenhagen	Silver	17	STRC • URB • ARCH
bKL Architecture	Chicago	Silver	10	INTR • URB • ARCH
BKV Group	Minneapolis	Silver	0	INTR • LAND • ARCH • ENGM
Brininstool + Lynch, Ltd	Chicago	Silver	1	ARCH
CambridgeSeven	Cambridge	Silver	2	ARCH
Carr Properties	Washington D.C.	Silver	1
Carrier Johnson + Culture	San Diego	Silver	0	ARCH
Cary Kopczynski & Company	Seattle	Silver	0	STRC • SEIS
Cast Connex	Dallas	Silver	6	STRC • MATR
CB Engineers	San Francisco	Silver	4	COMP • COST • FIRE • MEP
CDC Curtain Wall Design & Consulting, Inc.	Dallas	Silver	12	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
CIM GROUP	Los Angeles	Silver	8	DEV • OWN • PROP
Code Consultants, Inc.	Los Angeles	Silver	47	ENGO • FIRE • SEC
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 Consultants	Fort Collins	Silver	28	WIND • ENVE • LEGL
Degenkolb Engineers	San Francisco	Silver	1	SEIS
Diller Scofidio + Renfro	New York City	Silver	2	INTR • ARCH • OTHR
DLR Group	Chicago	Silver	12	INTR • URB • ARCH • ENGM
Dynamic Isolation Systems, Inc.	Las Vegas	Silver	0	STRC • SEIS
Eastdil Secured	New York City	Silver	0	COST • OTHR
Edgett Williams Consulting Group, Inc.	Mill Valley	Silver	17	VERC
Enclos Corp.	Los Angeles	Silver	42	PMNG • FAC • MATR
Ennead Architects	New York City	Silver	1	INTR • URB • ARCH
Environmental Systems Design, Inc.	Chicago	Silver	34	BACS • COST • FIRE • MEP
Epstein	Chicago	Silver	6	CIV • STRC • ARCH
Extell Development	New York City	Silver	14	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	109	ARCH
Front Inc.	Hong Kong	Silver	28	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	15	GEO
GenX Design & Technology	New York City	Silver	2	COMP
GERB Vibration Control Systems	Berlin	Silver	22	MATR • SEIS
GGLO	Los Angeles	Silver	1	INTR • LAND • URB • ARCH
Gilsanz Murray Steficek	New York City	Silver	11	STRC • ENGO • SEC
Glotman Simpson Consulting Engineers	Calgary	Silver	4	STRC • SEIS
Glumac	San Francisco	Silver	2	ENGO • MEP
GREC Architects	Chicago	Silver	2	ARCH
H+O Structural Engineering	Boston	Silver	0
Hartshorne Plunkard Architecture	Chicago	Silver	6
Hathaway Dinwiddie Construction Company	San Francisco	Silver	2	CON
HDR Inc.	New York City	Silver	0	ARCH
Hearst	New York City	Silver	1	OWN
HED	Chicago	Silver	1	ARCH
Heintges Consulting Architects & Engineers	New York City	Silver	5	FAC
Heller Manus Architects	San Francisco	Silver	4	URB • ARCH • TRAN
Hewitt Architects	Seattle	Silver	0
Hill International	Abu Dhabi	Silver	28	FIN • PMNG • CON • COST • INSU • LEGL
Hilson Moran	Cambridge	Silver	8	WIND • BACS • ENVE • FIRE • MEP • PROP • SEC • VERC
Hines	Houston	Silver	28	DEV • FIN • COST • PROP
HKA Elevator Consulting	Los Angeles	Silver	3	VERC
HKS Architects	Dallas	Silver	26	INTR • URB • ARCH
HYPRLIFT, Inc.	San Jose	Silver	0	VERC • VERS
Inhabit Group	Auckland	Silver	39	FAC
JAHN	Chicago	Silver	12	INTR • URB • ARCH
Jay Paul Company	San Francisco	Silver	1	DEV • OWN
JB&B	Boston	Silver	70	BACS • PMNG • ENGM • FIRE • HIST • MEP • SEC
JCE Structural Engineering Group	Pasadena, CA	Silver	0	STRC • SEC • SEIS
JDS Development Group	New York City	Silver	7	DEV • CON • OWN • PROP
Jensen Hughes	Chicago	Silver	8	FIRE
KieranTimberlake	Philadelphia	Silver	0	URB • ARCH
Kinemetrics	Pasadena, CA	Silver	43	MATR • OTHR • SEIS
Korb + Associates Architects	Milwaukee	Silver	0	ARCH
Krueck Sexton Partners	Chicago	Silver	3	ARCH
Kuraray	Wilmington	Silver	7	COMP • MATR
Lee Herzog Facade Access Consulting	San Marcos	Silver	7	FAC
LeMessurier	Boston	Silver	28	STRC • WIND • FAC • FACS • HIST • SEIS
Lendlease	Chicago	Silver	28	DEV • FIN • PMNG • CON
LERA Consulting Structural Engineers	New York City	Silver	17	STRC • WIND • SEIS
Lerch Bates, Inc.	New York City	Silver	67	FAC • FACS • OTHR • VERC
LEVER Architecture	Portland	Silver	0	ARCH
LMN Architects	Seattle	Silver	2	INTR • URB • ARCH • TRAN
Longman Lindsey	New York City	Silver	6	BMNT • MEP
Magellan Development Group	Chicago	Silver	12	ARCH • DEV • OWN
Martin/Martin	Denver	Silver	3	CIV • STRC • SURV
McHugh Construction	Chicago	Silver	22	CON
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
Michael Graves Architecture & Design	Baltimore	Silver	2	INTR • ARCH
Mithun	Seattle	Silver	0
Mueser Rutledge Consulting Engineers	New York City	Silver	12	GEO
Multistudio	Kansas City	Silver	0	ARCH
Nabih Youssef & Associates	Los Angeles	Silver	3	STRC • SEIS
National Real Estate Development	Philadelphia	Silver	1	DEV
New York Building Congress	New York City	Silver	0	OTHR
O'Donnell & Naccarato	Philadelphia	Silver	1	STRC • FACS
OAC Services, Inc.	Seattle	Silver	0	PMNG • CON • COST • ENGM • FACS • HIST • SEIS • TRAN • VERC
Office for Visual Interaction, Inc. (OVI)	New York City	Silver	18
OJB Landscape Architecture	Boston	Silver	17	LAND
OLYMPIQUE Façade Access Consulting	Los Angeles	Silver	6	BMNT • FACS
Optima Inc.	Chicago	Silver	1	ARCH • DEV
Ornamental Metal Institute of New York	New York City	Silver	0	MATR • NONP
Osborn Engineering	Cleveland	Silver	2	CIV • STRC • ENGM • FIRE • MEP
Pavarini McGovern	New York City	Silver	4	CON
Peckar & Abramson, P.C.	New York City	Silver	0	CON • LEGL
PEI Architects	New York City	Silver	1	ARCH
Pei Cobb Freed & Partners	New York City	Silver	27	INTR • URB • ARCH
Pepper Construction	Chicago	Silver	0	CON
Pierce Engineers, Inc.	Chicago	Silver	0	STRC
Portman Architects	Atlanta	Silver	3	ARCH
Prudential Center	Boston	Silver	12	DEV • OWN • PROP
RATIO I smdp	Chicago	Silver	2	LAND • URB • ARCH • HIST
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
Rockefeller Group	New York City	Silver	11	DEV • OWN
Royal Institution of Chartered Surveyors (RICS)	Birmingham	Silver	0	SURV
Safdie Architects	Somerville	Silver	18	INTR • URB • ARCH
SHoP Architects	New York City	Silver	18	ARCH
Skyline Robotics	New York City	Silver	1	MATR
SOH Wind Engineering LLC	Kuala Lumpur	Silver	0	WIND
Solomon Cordwell Buenz - SCB	Chicago	Silver	35	INTR • URB • ARCH • HIST
Spiritos Properties LLC	New York City	Silver	0	DEV
Stanley D. Lindsey and Associates, Ltd.	Atlanta	Silver	4	STRC • WIND • SEIS
Steel Institute of New York	New York City	Silver	0	MATR • NONP
Steinberg Hart	Los Angeles	Silver	0	INTR • ARCH
StructureCraft	Seattle	Silver	0	STRC
Studio Gang Architects	Chicago	Silver	4	INTR • URB • ARCH
SWA Group	Sausalito	Silver	48	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	3	GEO • OTHR
Tetra Tech	Pasadena, CA	Silver	0	ENGM
The Harman Group, now IMEG	Philadelphia	Silver	4	STRC
The University of Chicago	Chicago	Silver	0	ACAD
TLC Engineering Solutions	Chicago	Silver	2	STRC • FIRE • HIST • MEP • SEC
Vanderweil Engineers	Boston	Silver	4	MEP
VDA Elevator and Escalator Consulting	Atlanta	Silver	18	VERC
Walter P Moore	Atlanta	Silver	34	STRC • FAC • HIST • SEIS
Walters Inc	Asheville	Silver	21	CON
Werner Sobek AG	Berlin	Silver	26	STRC • ARCH • ENVE • FAC • TRAN
Woods Bagot	Abu Dhabi	Silver	72	INTR • URB • ARCH
Wright Runstad & Co	Seattle	Silver	1	DEV
CCHRB (Chicago Committee on High-Rise Buildings)	Chicago	Nonprofit/Governmental	0	NONP
Fire Equipment Manufacturers' Association (FEMA)	Cleveland	Nonprofit/Governmental	0	FIRE • MATR
Pennsylvania State University	State College	Nonprofit/Governmental	0	ACAD
Post-Tensioning Institute	Detroit	Nonprofit/Governmental	0	CIV
Pratt Institute	New York City	Nonprofit/Governmental	0	ACAD
The Skyscraper Museum	New York City	Nonprofit/Governmental	0	NONP
Thomas Jefferson University	Philadelphia	Nonprofit/Governmental	0	ACAD
University of Illinois at Urbana-Champaign	Urbana	Nonprofit/Governmental	0	ACAD • RES
Washington State University	Seattle	Nonprofit/Governmental	0	ACAD
Yale University School of Architecture	New Haven	Nonprofit/Governmental	0	ACAD