- The IJST
... Shear walls are often introduced in multistoried buildings to resist lateral forces when frame systems alone are insufficient. The term “shear wall” as used for elevator shafts, stairwells and central core units, in addition to plane walls. Analysis for lateral loads of buildings containing shear wa ...
... Shear walls are often introduced in multistoried buildings to resist lateral forces when frame systems alone are insufficient. The term “shear wall” as used for elevator shafts, stairwells and central core units, in addition to plane walls. Analysis for lateral loads of buildings containing shear wa ...
Significant technical advances in broadband seismic stations in the
... that might occur close to the station. Stations are deployed in quiet environment as far from anthropogenic noise as possible. The solar system that powers the station is designed to provide 60 Watts continuously for at least 10 days without sunlight. This robust solar system is comprised of two dis ...
... that might occur close to the station. Stations are deployed in quiet environment as far from anthropogenic noise as possible. The solar system that powers the station is designed to provide 60 Watts continuously for at least 10 days without sunlight. This robust solar system is comprised of two dis ...
- ATC Online Store - Applied Technology Council
... In October 1982 the Federal Emergency Management Agency (FEMA) awarded Applied Technology Council (ATC) a contract to develop earthquake damage evaluation data for facilities in California. FEMA is planning to use these data and companion loss estimation and inventory methodology to estimate the eco ...
... In October 1982 the Federal Emergency Management Agency (FEMA) awarded Applied Technology Council (ATC) a contract to develop earthquake damage evaluation data for facilities in California. FEMA is planning to use these data and companion loss estimation and inventory methodology to estimate the eco ...
Plate Tectonics - Geography at InterHigh
... Sit in a comfortable chair, hold your hand out, and watch your fingernails grow. That's about the average speed of a tectonic plate. But wait around long enough, and even the tortoise crawl of plate tectonics will have dramatic and deadly consequences. Though plate tectonics is a global phenomenon a ...
... Sit in a comfortable chair, hold your hand out, and watch your fingernails grow. That's about the average speed of a tectonic plate. But wait around long enough, and even the tortoise crawl of plate tectonics will have dramatic and deadly consequences. Though plate tectonics is a global phenomenon a ...
Part 1 of 2: Undertaking Seismic Risk Assessments for Buildings
... engineer’s judgement. Therefore, there may be significant variations in the % NBS calculation of a building assessment. Furthermore, the % NBS that is provided for in a detailed assessment reflects the lowest NBS part of a building, for example, if an engineer concludes that a building has an NBS of ...
... engineer’s judgement. Therefore, there may be significant variations in the % NBS calculation of a building assessment. Furthermore, the % NBS that is provided for in a detailed assessment reflects the lowest NBS part of a building, for example, if an engineer concludes that a building has an NBS of ...
Seismic Tomography
... Also called compressional or longitudinal waves, they compress and expand (oscillate) the ground back and forth in the direction of travel, like sound waves that move back and forth as the waves travel from source to receiver. P wave is the fastest wave. Seismic Wave— A seismic wave is an elastic wa ...
... Also called compressional or longitudinal waves, they compress and expand (oscillate) the ground back and forth in the direction of travel, like sound waves that move back and forth as the waves travel from source to receiver. P wave is the fastest wave. Seismic Wave— A seismic wave is an elastic wa ...
EARTHQUAKE DAMAGE – INTENSITY RELATIONSHIP
... acceleration in that code was not significantly increased. The highest PGA coefficient is 0.13g. Further, in 2002 there was a significant increase in the seismic design loads [SNI 2002]. The important engineered buildings at that time were designed with PGA of 0.3g. This story indicates that many bu ...
... acceleration in that code was not significantly increased. The highest PGA coefficient is 0.13g. Further, in 2002 there was a significant increase in the seismic design loads [SNI 2002]. The important engineered buildings at that time were designed with PGA of 0.3g. This story indicates that many bu ...
IOSR Journal of Mechanical and Civil Engineering (IOSR-JMCE) e-ISSN: 2278-1684,p-ISSN: 2320-334X,
... in terms of construction and maintenance costs [1]. The safety factors used in conventional design is no guarantee for structural safety due to uncertainties that occur in structural loadings [2-5]. The reliability evaluation of engineered structures is a task of paramount importance structural engi ...
... in terms of construction and maintenance costs [1]. The safety factors used in conventional design is no guarantee for structural safety due to uncertainties that occur in structural loadings [2-5]. The reliability evaluation of engineered structures is a task of paramount importance structural engi ...
Full Scale Dynamic Behaviour of a RC-building under low to
... Since November 2004, the building has been monitored by six accelerometric stations, three on the ground floor called OGH1, OGH2 and OGH3 and three on the 13th floor called OGH4, OGH5 and OGH6 (Fig. 2). This instrumentation is part of the French Permanent Accelerometric Network (RAP) (http://www-ra ...
... Since November 2004, the building has been monitored by six accelerometric stations, three on the ground floor called OGH1, OGH2 and OGH3 and three on the 13th floor called OGH4, OGH5 and OGH6 (Fig. 2). This instrumentation is part of the French Permanent Accelerometric Network (RAP) (http://www-ra ...
Earthquakes
... boundaries when tectonic plates slide past one another. However, the strongest earthquakes occur at convergent boundaries due to the amount of increased stress on the rock. ...
... boundaries when tectonic plates slide past one another. However, the strongest earthquakes occur at convergent boundaries due to the amount of increased stress on the rock. ...
Chapter 5 Earthquakes - Sandpoint Middle
... Surface Waves (L-waves) Note the movement is circular. The molecules move in a circular pattern, but the energy moves through it. The particles or molecules move or vibrate back and forth, but really don’t move much at all. ...
... Surface Waves (L-waves) Note the movement is circular. The molecules move in a circular pattern, but the energy moves through it. The particles or molecules move or vibrate back and forth, but really don’t move much at all. ...
Locating the Epicenter Lab
... The data you entered on the last page can be used to locate the epicenter and to find the exact time at which this earthquake occurred. Here's how. ...
... The data you entered on the last page can be used to locate the epicenter and to find the exact time at which this earthquake occurred. Here's how. ...
Pounding between adjacent buildings: comparison
... there is no need to provide any separation distance. This is because these buildings will vibrate in phase and not collide at any point of time. However, this situation is not practicable because it is very difficult to construct two structures with the same natural period. Also, it can be observed ...
... there is no need to provide any separation distance. This is because these buildings will vibrate in phase and not collide at any point of time. However, this situation is not practicable because it is very difficult to construct two structures with the same natural period. Also, it can be observed ...
Gizmo earthquakes 1
... Earth’s interior in the form of body waves. There are two types of body waves: P-waves (primary waves) and S-waves (secondary waves). Scientists study earthquakes with the aid of an instrument called a seismograph. When seismic waves reach the seismograph, a graphical record, or seismogram, is produ ...
... Earth’s interior in the form of body waves. There are two types of body waves: P-waves (primary waves) and S-waves (secondary waves). Scientists study earthquakes with the aid of an instrument called a seismograph. When seismic waves reach the seismograph, a graphical record, or seismogram, is produ ...
BSI®, the ultra-high-performance fibre
... of the following business lines: construction, real estate, civil engineering, metal, roads, energy and concessions. Thanks to the experience of more than 64,000 employees, Eiffage generated revenues of €13.9 billion in 2015, including 19% outside France. About Eiffage Génie Civil As an integral par ...
... of the following business lines: construction, real estate, civil engineering, metal, roads, energy and concessions. Thanks to the experience of more than 64,000 employees, Eiffage generated revenues of €13.9 billion in 2015, including 19% outside France. About Eiffage Génie Civil As an integral par ...
Seismic retrofit
Seismic retrofitting is the modification of existing structures to make them more resistant to seismic activity, ground motion, or soil failure due to earthquakes. With better understanding of seismic demand on structures and with our recent experiences with large earthquakes near urban centers, the need of seismic retrofitting is well acknowledged. Prior to the introduction of modern seismic codes in the late 1960s for developed countries (US, Japan etc.) and late 1970s for many other parts of the world (Turkey, China etc.), many structures were designed without adequate detailing and reinforcement for seismic protection. In view of the imminent problem, various research work has been carried out. State-of-the-art technical guidelines for seismic assessment, retrofit and rehabilitation have been published around the world - such as the ASCE-SEI 41 and the New Zealand Society for Earthquake Engineering (NZSEE)'s guidelines. These codes must be regularly updated; the 1994 Northridge earthquake brought to light the brittleness of welded steel frames, for example.The retrofit techniques outlined here are also applicable for other natural hazards such as tropical cyclones, tornadoes, and severe winds from thunderstorms. Whilst current practice of seismic retrofitting is predominantly concerned with structural improvements to reduce the seismic hazard of using the structures, it is similarly essential to reduce the hazards and losses from non-structural elements. It is also important to keep in mind that there is no such thing as an earthquake-proof structure, although seismic performance can be greatly enhanced through proper initial design or subsequent modifications.