expert witnesses
Building Design Expert Witnesses: 18
Technology Analysis Expert William Acorn
William Acorn, P.E., CFLC, FASHRAE
Principal
16420 N 92nd St
Suite 200B
Scottsdale AZ
85260
USA
phone: (602) 888-7250
fax: 520-577-0851
![acorn_logo.gif](/Content/images/members/acorn_logo.gif)
Roofing Waterproofing Expert Witness Timothy Barrett
Timothy M. Barrett, RCI, RRC, CSI, CDT, GRP
President
33 Stonehouse Rd.
PO Box 412
Millington NJ
07946
USA
phone: 908-647-0238
![Barrett-Roofs-Logo.png](/Content/images/members/Barrett-Roofs-Logo.png)
Mechanical Engineering Expert Witness Michael Pollock
Michael A. Pollock, PE, USPTO
405 Barbara Lane
Bryn Mawr PA
19010
USA
phone: 610-955-4811
![cogent-experts-logo.png](/Content/images/members/cogent-experts-logo.png)
Construction Defect Expert Witness Sanford Loy
Sanford C. Loy , CCM, B.Arch, MSCE
Principal
200 Prosperity Drive
Knoxville TN
37923
USA
phone: 865-675-3603, ext. 102
fax: 865-675-0009
![Construction-Strategies-Solutions-Logo.jpg](/Content/images/members/Construction-Strategies-Solutions-Logo.jpg)
Construction Defect Expert Witness David Bekus
David M. Bekus
45 Hunt Lane
Skilllman NJ
08558
USA
phone: 732-735-7444
![David-Bekus-Construction-Defect-Expert-Logo.jpg](/Content/images/members/David-Bekus-Construction-Defect-Expert-Logo.jpg)
Engineering Expert Vincent Ettari
Design, Analysis, Expert, Trial, Forensic Witness
Counties of Westchester, Rockland, Queens, Putnam
Dutchess, Orange, Ulster, Nassau, Suffolk, Bronx, Statin Island
Richmond & Brooklyn / Kings County Long Island / NY City / Manhattan / White Plains
Shrub Oak NY
10588
USA
phone: 914-245-6320
fax: 914-245-6335
![Vincent-Ettari-Design-Engineer-Expert-Photo.jpg](/Content/images/members/Vincent-Ettari-Design-Engineer-Expert-Photo.jpg)
Habitat Engineering Expert Fari Barzegar
Dr. Fari Barzegar
Ph.D., P.E., CPEng
446-17th Street, Suite 300
Oakland, CA 94612
All States USA, International, CAN, AUS
phone: 510-891-0300
fax: 510-891-0333
![fari_barzegar_photo.jpg](/Content/images/members/fari_barzegar_photo.jpg)
Land Expert Dennis Wilson
Dennis Wilson
Principal
909 14th Street
Modesto CA
95354
USA
phone: 209-491-7620
Data Center Infrastructure Expert Witness Philip Isaak
Philip J. Isaak, PE, P.Eng., DCDC, RCDD, SMIEEE
Victoria MN USA
phone: 952-679-4604
![Isaak-Technologies-Logo.jpg](/Content/images/members/Isaak-Technologies-Logo.jpg)
Plumbing Forensic Engineering Expert Witness David Shreve
David G. Shreve, PE
Senior Consultant
8330 Juniper Creek Lane
San Diego CA
92126
USA
phone: 858-587-2874
![Ivey-Engineering-logo.gif](/Content/images/members/Ivey-Engineering-logo.gif)
Structural Engineering Expert Witnesses Josephson Werdowatz
Carl H. Carl Josephson, PE SE, Sr. Princ. Struct. Engineer
Dan Werdowatz PE SE, Sr. Princ. Struct. Engineer
See Multiple Addresses Below
USA
phone: 858-558-2181
![Josephson-Wedowatz-Associates-Logo.gif](/Content/images/members/Josephson-Wedowatz-Associates-Logo.gif)
Forensic Structural Engineering Expert Witness Casey Hemmatyar
Casey K. Hemmatyar, PE, SE
Chief Expert
515 South Flower St.,
Suite 1800
Los Angeles CA
90071
USA
phone: 213-261-6600
![Casey-Hemmatyar-Structural-Forensic-Engineering-Expert-Photo.jpg](/Content/images/members/Casey-Hemmatyar-Structural-Forensic-Engineering-Expert-Photo.jpg)
Construction Defect Expert Witness Mark Rieser
Mark E. Rieser, II, MS, PE, AIA, GBC, GEC
President / CEO / Civil Engineer
See Multiple Addresses Below
CA USA
phone: N. CA HQ 408-392-2345 S. CA HQ 310-651-9995
![Rieser-Building-Group-Logo.gif](/Content/images/members/Rieser-Building-Group-Logo.gif)
Roofing Waterproofing Expert Witness John Shepherd
John D. Shepherd, RRO, RRC
IIBEC Registered Roof Consultant & Roof Observor
PO Box 10010
Torrance CA
90505
USA
phone: 310-378-0791
fax: 310-378-0794
![John-Shepherd-Waterproofing-Expert-Photo.jpg](/Content/images/members/John-Shepherd-Waterproofing-Expert-Photo.jpg)
Architecture Expert Witness David Brotman
David Brotman, FAIA
Principal
24350 N Whispering Ridge Way, #38
Scottsdale AZ
85255
USA
phone: 480-912-1110
![David-Brotman-Architecture-Expert-Witness-Photo.jpg](/Content/images/members/David-Brotman-Architecture-Expert-Witness-Photo.jpg)
Featured resources
by William R. Acorn
by Jeffrey Fox, PhD
by Jon Burroughs, MD, FACHE