The LFZ Group is a multi-faceted consulting design and advisory engineering firm that serves the real estate investment and construction industries. Founded in 1975 with the commitment to providing our clients with the highest quality of service, the LFZ Group is committed to satisfying our client's unique needs through the development of a long-term productive business relationship and the use of state of the art building technologies.
From inception, the scope of our professional services has been expanding to meet the ever-expanding needs of our real estate industry clients since we firmly believe that accommodating our client's needs are paramount to our continued success.
Founded in 1980 in direct response to our client's expanding need for real estate due diligence services, we have developed comprehensive property condition and seismic risk assessment capabilities involving all essential building systems as well as providing independent structural peer reviews and course of construction field representative/monitoring services.
From inception, the scope of our professional services has been expanding to meet the ever-expanding needs of our real estate industry clients since we firmly believe that accommodating our client's needs are paramount to our continued success.
Founded in 1980 in direct response to our client's expanding need for real estate due diligence services, we have developed comprehensive property condition and seismic risk assessment capabilities involving all essential building systems as well as providing independent structural peer reviews and course of construction field representative/monitoring services.
Services
Portfolio seismic risk evaluations for groups of geographically-dispersed properties require a unique understanding of how seismicity affects entire seismic regions.
AERA, our proprietary in-house developed loss estimation software, provides aggregate portfolio losses for relevant "fault-based" and "return period-based" scenarios as well as probabilistic loss estimates.
From experience, we have found the most meaningful loss estimates are those derived from "fault-based" earthquake scenarios.
Recognizing that earthquakes are discrete real-world events, AERA undertakes earthquake simulations occurring on all causative earthquake faults within a seismic region.
AERA, our proprietary in-house developed loss estimation software, provides aggregate portfolio losses for relevant "fault-based" and "return period-based" scenarios as well as probabilistic loss estimates.
From experience, we have found the most meaningful loss estimates are those derived from "fault-based" earthquake scenarios.
Recognizing that earthquakes are discrete real-world events, AERA undertakes earthquake simulations occurring on all causative earthquake faults within a seismic region.
The prime concern in the structural design process was to find a cost-effective solution to upgrade the existing structural steel X-braced transverse seismic frames above the Second Floor at end wall conditions and the orthogonally-oriented bolted, cover-plated seismic moment frame construction without undertaking the costly, labor intensive augmentation of individual lateral force-resisting elements and connections.
Utilization of sixty (60) fluid viscous dampers installed at the ends of brace-like extender elements in both diagonal and chevron configurations significantly increased the overall structural equivalent viscous damping without appreciably affecting the natural periods of vibration of the lateral force-resisting system.
Utilization of sixty (60) fluid viscous dampers installed at the ends of brace-like extender elements in both diagonal and chevron configurations significantly increased the overall structural equivalent viscous damping without appreciably affecting the natural periods of vibration of the lateral force-resisting system.
Of prime concern in this case was a need to enhance the prevailing shear strength capacities of the building perimeter wall piers and spandrels to a degree that would increase ductility and preclude any potential for brittle shear-type failure during future adverse seismic disturbances.
Previously used primarily to provide additional concrete confinement to vertical load bearing elements, the recently adopted AC-130 allowed for the use of lightweight composite materials to augment the in-plane shear capacity of seismic force-resisting elements.
Previously used primarily to provide additional concrete confinement to vertical load bearing elements, the recently adopted AC-130 allowed for the use of lightweight composite materials to augment the in-plane shear capacity of seismic force-resisting elements.
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