The one-story Analytical Laboratory building is located on the Materials and Fuels Complex at Idaho National Laboratory (INL). The building is a concrete and masonry structure with a high bay that houses an overhead crane. INL was concerned about...
The Department of Energy uses the Advanced Test Reactor (ATR) at Idaho National Laboratory to test nuclear fuel systems and materials. SGH engineers performed the experienced-based seismic qualification of Seismic Category I equipment at the ATR...
The South Texas Project is a twin-reactor facility that produces 2,700 MW of power. To increase the power generating capacity, the plant planned to add two advanced boiling water reactors to the existing pressurized water reactors. SGH and...
Pantex planned the new Component Evaluation Facility (CEF) to meet criteria for withstanding mixed categories of various intensities of natural phenomena hazards (NPH), and accidental, and intentional and unintentional loads. Working for Washington...
This study investigates the seismic behavior of deconstructable composite steel/concrete floor systems consisting of precast concrete planks and deconstructable clamping connections attaching the planks to the steel floor beams.
In current design practice any vessel at berth during an earthquake event is ignored. This is rationalized based on the frequency of vessel calls in combination with the infrequency of significant earthquakes and the long response...
For the seismic design of pier and wharf structures, there are multiple methodologies permitted for determining displacement demands. The current edition of MOTEMS and ASCE 61-14 permits use of an iterative substitute structure...
By: Marios Mavros, Farhad Ahmadi, Pui-Shum Shing, Richard Klingner, David McLean, Andreas Stavridis
This paper presents the shake-table tests of a full-scale, two-story, reinforced masonry shear-wall structure designed by a displacement-based method. The test structure had two T-sectioned and one rectangular-sectioned wall components
Following the M6.7 Northridge Earthquake 20 years ago, an engineer performing a post-earthquake inspection of the Santa Clarita City Hall was struck in the head by a structural bolt as he removed a ceiling tile to observe the framing.
By: Michael Cochran, Dilip Khatri, Kevin OConnell, Doug Thompson
Los Angeles is no stranger to earthquakes and, like other cities in California, has experienced extensive damage in previous seismic events, which has led to significant advancements in earthquake engineering. Some might say that L.A. has been...
The Carlsbad Desalination Project uses a pipeline to deliver water from a seawater desalination plant located near sea level to the San Diego County Water Authority’s Second Aqueduct connection facility located at an elevation of
The Mandatory Soft Story Retrofit Ordinance 66-13 is a mandatory seismic retrofit program requiring evaluation and retrofit of multi-unit, wood-frame structures with five or more residential units, two or more stories over a "...
Executive Summary: This report addresses the question of when the building code should require seismic upgrade for a building undergoing a voluntary alteration. It proposes the re-introduction of an optional alteration-based upgrade...
By: Keith Palmer, Christopulos, Adam S., Lehman, Dawn E., Roeder, Charles W.
Abstract: Buckling-restrained braced frames (BRBFs) are becoming a more common seismic-resisting system in the U.S. BRBs have more equal and stable cyclic axial response than traditional, steel sections which buckle and this makes them attractive...