The historic Lane Building is a twelve-story, nonductile concrete structure originally constructed in the early 1920s. The owner undertook a renovation project to convert the building to a mixed-use property with ground-floor retail and more than...
After the Fukushima Daiichi accident, the U.S. Nuclear Regulatory Commission (NRC) issued 10 CFR 50.54(f), a letter requiring licensees to perform a reevaluation of seismic hazard and take further actions if it exceeds their design basis. In...
With bedrock more than 200 ft below street level, the fifty-eight-story Millennium Tower, like most downtown high-rises, is founded on piles driven through soft, compressible clay soils deposited by the San Francisco Bay and extending into a...
In response to Nuclear Regulatory Commission (NRC) post-Fukushima (FLEX) requirements, Entergy sought to install a 21,000 gal, mobile frac tank for temporary water storage at their Pilgrim Nuclear Power Station (PNPS). SGH evaluated the...
Displayed outside the Veteran’s Administration Polytrauma & Blind Rehabilitation Center, Field Guide initially appears to be an abstract latticework. As they approach, visitors can see or feel that this form comprises twenty-two images...
The Nablus Sports Arena, sponsored in part by USAID, is a multi-sport and fitness complex planned for Nablus residents and area sports clubs. The arena was designed to include a 1700-seat basketball court that could accommodate a variety of other...
The Indian Valley Reservoir provides long-term irrigation storage and flood control. A 2010 inspection report recommended seismic analyses of the floodgates and control structure to confirm the gates could be raised following a earthquake. SGH...
In the mid-1990s, the Federal Emergency Management Agency (FEMA) supported a joint effort of the Applied Technology Council (ATC), American Society of Civil Engineers, and Building Seismic Safety Council to develop seismic retrofit design...
Immortalized by the Eagles as Hotel California, the former resort is the namesake for the song and the rehabilitation facility where the lead singer wrote the lyrics during his treatment there. Constructed in the 1920s as the Norconian Resort,...
On 15 October 2006, a large earthquake damaged both telescopes at Keck Observatory causing them to miss weeks of observation. Following this event, the observatory wanted to upgrade the structural support systems of both telescopes to reduce...
The Port of San Francisco is a historic urban waterfront supporting a variety of businesses, transportation, tourism, and more. As part of a large rehabilitation project, the Port is performing a Port-wide multi-hazard risk assessment, which...
A $5B program is underway at the Port of San Francisco to strengthen or replace the three mile long seawall. Part of the program is a multi-hazard risk assessment, evaluating the consequences of flooding due to sea level rise and earthquake...
Brooklyn Basin is a multi-billion-dollar real estate development of the former Port of Oakland 9th Avenue Terminal located along the Oakland Estuary. The centerpiece of the development is the 10 acre shoreline park which includes a 1,200 foot...
In performance-based seismic design, a marine structure is designed for inertial loading effects associated with the dynamic response of the structure. Some waterfront structures also experience seismically induced kinematic effects, associated...
In many finite element platforms, a classical global damping matrix based on the elastic stiffness of the system (including isolators) is usually developed as part of the solution to the equations of motion of base‐isolated buildings. The...
Several commercially available software packages automate the structural design process for new buildings, allowing engineers to deliver projects with unparalleled efficiency. These software packages contain structural engineering standards (e.g...
By: Keith Palmer, Pearl Ranchal, Kari Klaboe, Duke Crestfield, Stephen Kadysiewski, Laurence Kornfield, Robert Kraus
Over the years, there has been much focus within California on seismically vulnerable building types, with the ultimate goal being to reduce life safety risks, improve community resiliency, or achieve a balance of both objectives. In San...
This paper presents a case study for a recent seismic fragility evaluation of cable trays at a nuclear power plant in the United States. The evaluation was initiated due to the presence of non-serrated strut nuts in cable tray supports throughout...
The Richter magnitude 6.7 San Fernando Earthquake occurred on the morning of February 9, 1971 in the San Fernando Valley north of the city of Los Angeles. Also known as the Sylmar Earthquake, it caused 65 deaths, 2500 injuries and an estimated $...
In performance-based seismic design, a marine structure is designed for inertial loading effects associated with the dynamic response of the structure. Some waterfront structures also experience seismically induced kinematic effects, associated...