Congratulations to Jeff Hubbell who was recently selected to serve on the Performance-Based Design for Structures committee.
Jeff has over 40 years experience in building and crane design for commercial, industrial and governmental clients. He has extensive experience in performance-based seismic design utilizing non-linear time history analysis as well as in-depth familiarity of friction dampers, viscous dampers and other energy absorbing devices. His experience includes many key structures in the pacific northwest.
Boeing Everett Factory Seismic Rehabilitation:
Responsible for developing criteria, methods, custom software, analysis techniques, and implementing the seismic rehabilitation of Boeing’s final assembly building complex in Everett, Washington. This is the world’s largest building, and the engineering effort lasted about eight years. Non-linear dynamic time-history analysis was used to design the rehabilitation which included installation of friction dampers on the second story braced frames. Multiple rehabilitation schemes were investigated, with the damper scheme proving least disruptive and most economical. Custom software was developed to automate member and connection checks due to the large quantity of analysis output and the large number of members and joints.
Boeing Plant 2 Auditorium Rehabilitation:
Engineer of record for seismic investigation, review, and rehabilitation of Boeing’s Plant 2, 2-22 cafeteria and auditorium in Seattle, Washington. Building was damaged during the Nisqually earthquake from soil liquefaction resulting in subsidence of the foundation system. Repairs to the main structural system included replacing all braces with friction dampers to handle both future seismic and subsidence concerns.
Boeing Everett Paint Hangar Seismic Upgrade:
Engineer of record for Paint Hangar 45-03 refurbishment project at Everett, Washington. Analyzed and designed paint hangar structure for voluntary seismic upgrade and to support new mechanical systems. Introduced use of structural foam panels to serve as insulated floor of overhead mechanical space.
Boeing Everett 40-21/22 Seismic Peer Review:
Conducted peer review of original seismic design for Building 40-21/22 at Everett manufacturing facility. Review required independent analysis of representative portions of the 1,100 ft. x 750 ft. assembly bays.
Boeing Everett 767 Rear Door System:
Designed removal of rear wind wall of 40-32 building (767 assembly) and adding 8‑leaf moveable door system, including doors, header trusses, door pocket towers, foundation system and rails/guides for the doors. Seismic design included friction dampers tuned to the period of the adjacent factory structure. Door opening size is 85-ft by 240-ft.
Boeing Everett 40-51 Seismic Peer Review:
Conducted peer review of design for voluntary seismic upgrade to Building 40-51 at Everett manufacturing facility. Design included use of viscous dampers.
Paint Hangar 45-03 refurbishment project at Everett, Washington.
Engineer of Record. Analyzed and designed paint hangar structure for voluntary seismic upgrade and to support new mechanical systems. Introduced use of structural foam panels to serve as insulated floor of overhead mechanical space.