Our Experts
William H. Johnson, Ph.D., P.E., F.ASCE, M.AISC
Principal Consulting Structural Engineer
45+ yrs. Experience
SME: Impact, Blast, Aircraft Impact Analyses, Dynamic Analysis, Seismic Qualification, Development of Nuclear Licensing Documents, Machine Foundation Design, Heavy Equipment Rigging
Past Committees:
- AISC Task 12 Subcommittee AISC N690 (2005 - 2016)
- ASCE Standard Committee for Blast Protection of Buildings (2009 - 2014)
Mahmoud R. Taha, Ph.D., P.E., PEng, F.ACI, F.ASCE
Principal Consulting Structural Engineer
Distinguished Professor and Chairman of The Department of Civil, Construction & Environmental Engineering at the University of New Mexico, USA
25+ yrs. Experience
Structural and materials engineer with extensive experience in concrete materials and structures. Dr. Taha is a licensed professional engineer with +25 years of professional engineering experience, and has worked as a consultant on numerous projects worldwide. Dr. Taha is Section Editor of ASCE Journal of Materials in Civil Engineering, and is a Distinguished Professor and Chairman of The Department of Civil, Construction & Environmental Engineering at the University of New Mexico, USA.
SME: Concrete materials, specifically polymer concrete, fiber concrete, mass concrete, ultra-high-performance concrete, 3D-printed concrete, concrete for radiation shielding, and green concrete.
Current Committees:
- ASCE Infrastructure Resilience Division - Secretary
- ASCE Committee Emerging Technologies - Co-Chair
- ACI Committee Polymers & Adhesives - Chairman
- ACI Committees on FRP, Nanotechnology, Creep, Deflection, 3D Printed Concrete - Member
Perry S. Green, Ph.D., P.E., F.ASCE, F.SEI, M.AISC
Principal Consulting Structural Engineer
Former Technical Director - Steel Joist Institute
35+ yrs. Experience
Structural analysis and design of steel and concrete structures, systems and components of plants under design development, construction, construction engineering oversight, startup, and outages as well as the configuration management aspects of pre-operational and operating nuclear power plants.
SME: Stability of metal structures, inelastic behavior of structural systems and members, cold-formed steel, connection design, construction oversight and quality assurance
Current Committees:
- ASCE/SEI Technical Activities Committee on Metals (TAC) - Chair, Term Oct. '20 – Sep. '23
- ASCE/SEI Technical Committee on Cold-Formed Steel Members (CFSM) - Past Chair, Term Oct. '18 - Sep. '21 (Term ended one year early to fill TAC Chair position); Member, 2016 - 2022
- Previously served on the ASCE Compression and Flexural (Structural) Members and Fatigue and Fracture Committees
- AISC Member TC11, Design of Nuclear Facilities, Term 2018 - Present
- AISC Member TC6, Connections, Term 2020 - Present
- AISI, Cold-Formed Steel (CFS) Main Committee on Specifications and Chair, Subcommittee 3 – Connections and Joints from 2009 to present; Member Cold-Formed Steel Committee on Framing Standards
- Structural Stability Research Council - Treasurer 2020 to Present; Executive Committee Member from 2004 to 2020
Kenneth R. Bell, Ph.D., P.E., D.GE, F.ASCE, F.ASTM
Principal Consulting Geotechnical Engineer
Bechtel Fellow Emeritus
38+ yrs. Experience
Former Chief Engineer of the Power and Infrastructure Global Business Units and Corporate Manager of Bechtel’s Geotechnical and Hydraulic Engineering Services (G&HES) Group. Responsibility for the technical quality of all work products produced by Bechtel’s G&HES Group.
SME: Site investigations, development of foundation recommendations, deep excavations using slurry wall technology, ground modifications (jet grouting), pile driving, and rock tunnels
Current Committees:
- ASTM International Committee on Soil and Rock, Vice Chair