Key Staff Members

Richard D. Koury, President and C.E.O.
Richard Koury, CEO, founded Koury Engineering & Testing in 1992, and has grown the team at Koury Engineering and Testing to include the best personnel in the industry with over 130 employees. He is intimately familiar with the construction process having worked as a contractor and had a distinguished career as an inspector; he held inspection licenses in structural masonry, reinforced concrete, structural steel, and seismic rehabilitation and is on the City of Los Angeles’s deputy inspection advisory committee.

Shawn Ariannia, MSCE, P.E., G.E. - Vice President:
Mr. Ariannia has more than 25 years of experience in design, supervising and technical management of major projects in both structural and geotechnical fields. Mr. Ariannia has been involved in major projects such as power plants, cooling towers, silos, bridges and medium to high-rise multi story structures. Mr. Ariannia graduated with a Masters Degree in civil engineering in 1985. For more than 6 years, he has worked as a specialist in troubleshooting of structures, design and implementation of retrofit/re-strengthening methods for various kinds of structures and foundations. Breadth of his experience includes geotechnical analysis and material testing, field and laboratory test management, slope stability and liquefaction analysis, seismic hazard evaluation, pile and earth retaining structures design, design and implementation of repair and retrofit methods relevant to soils, foundation and structural behavior for different types of structures. In the last 10 years he has performed as the Geotechnical Engineer of Record for numberous and several projects, including school and Higher Educational projects in Southern California.

Mohsen Rahimian, P.E., Senior Project Engineer:
More than 25 years of experience in design and construction and technical management in structural and geotechnical fields. Mr. Rahimian graduated with a Masters Degree in Civil Engineering and during his professional career has been involved in many projects such as industrial plants, water supply plants and medium to high-rise multi-story structures. He conducted and performed numerous project functions including design and construction phase, quality control, time and cost management. Performed and managed tests on concrete structures and geotechnical investigation jobs for a variety of projects.

Ron Hanson, R.G., C.E.G. Senior Engineering Geologist:
Mr. Hanson is a California Registered Geologist and a Certified Engineering Geologist as well, with over 23 years of experience in performing geological/geotechnical investigations, geologic inspections and in preparing of geological reports. He has worked in numerous grading operations. He was the head Geologic inspector of the CC Ranch project in Castaic, a large project that consisted of four million yards of soil being moved. He performed geologic mapping for fault evaluations at the Seven Oaks Dam Project. He also worked on the widening of the Garden Grove Freeway (State Route 22) inspecting fill slopes, subgrade preparation and over excavation of unsuitable material.

Tammie Perkins, Staff Geologist & Operational Manager:
Mrs. Perkins graduated with a Bachelors degree of Science in Geological Engineering from the University of Missouri – Rolla. She has more than 6 years of experience in office management and engineering fieldwork. Some of her engineering experience involved tasks such as performing quality assurance on large geotechnical projects; verifying compaction, soil quantities and placement tests; developing daily entry log for client samples; preparing lab safety procedures, reports and training manuals; preparing and reviewing technical data and checking calculations of various reports. Her Managerial experience involves duties such as overseeing construction material and geotechnical testing; assigning technicians to various projects; training personnel and interviewing new employees. Mrs. Perkins has great management skills.

Matin Noorzay, Project Engineer:
More than 10 years working experience in engineering and technical drafting. Mr. Noorzay has an extended experience in conducting and monitoring soils observations and testing during the course of construction. He also has experience in soils investigations, drilling, logging and sampling.

Hoss Hayati, Ph. D, E.I.T., Senior Project Manager:
Mr. Hayati graduated with a PhD degree in geotechnical engineering in 2009 from Clemson University and served as a post-doc fellow in California Polytechnic State University (San Luis Obispo, CA). His research area has been in geotechnical earthquake engineering with a particular emphasis on liquefaction potential, site response analysis, hazard mapping, site characterization, and reliability-based design. Mr. Hayati has also been involved in consulting jobs including site investigation, field and laboratory testing, analysis and design of various geotechnical projects including marine structures, jetties, quay walls, soft ground and rock tunnels, DOT bridges, retaining walls, and commercial buildings. His consulting experience includes static and seismic slope stability, tunnel boring machines, liquefaction analysis, seismic hazard evaluation, site response analysis, deformation analysis under static and dynamic loads using finite element methods, shallow and deep foundation design, and probabilistic geotechnical design.