4 in the ‘Guide’ for information on bracing strategies for energy efficient wall assemblies.) Given • Typical one-story entry-level (starter) home with floor plan per Figure 1 • Design wind speed Seismic Design Category C. Old hindi songs free download. Seismic bracing design in low to moderate seismicity regions may get delegated from the design team to a construction team member, or it may get completely neglected. While significant seismic events are rare in these regions, seismic bracing of critical components in essential facilities is important to keep the facilities operational during smaller events that may cause non-structural damage. How big of a deal are earthquakes in Ohio (or other regions of low to moderate seismicity)? According to the some of Ohio’s faults could generate a 6.0-7.0 magnitude earthquake. This magnitude event would be similar to the recent earthquake in Amatrice, Italy or the 1994 Northridge Earthquake. They both resulted in significant casualties and property damage. But the fact that this is “possible” doesn’t really tell us much about seismic risk. It doesn’t tell you how likely it is for that quake to occur, or how violent the ground motions would be at a specific site. There is no evidence that an event of this magnitude has occurred in the last 10,000 years. On the other hand, if you visit the, you’ll see there are tiny “measurable”, if not humanly perceptible, “events” in the Ohio region on a monthly basis. It’s a pretty good bet that your building will feel the effects of some seismic activity over its lifetime. Karma koin digital delivery phone number. It’s a better bet that over the geologically short time frame of a building’s life, these forces, and the risk of significant structural damage, will be small. The is documented on the USGS website and has been primarily limited to “non-structural” damage such as toppled chimneys, falling cornices, cracked plaster walls, and broken organ pipes. There have been approximately a dozen earthquakes in the past 200 years that have resulted in damage. Why is seismic bracing important in areas of low to moderate seismicity? Toppled chimneys, and broken organ pipes may seem quaint, but the USGS’s historical record of structural damage in Ohio only covers about 200 years. During some of the larger recorded events, much of Ohio was less populated, so less damage was reported. In a more modern urban infrastructure, similar non-structural damage could include toppled server racks and broken gas lines. The takeaway is that in relatively recent history, Ohio has been subject to seismic events that could cause the type of non-structural damage that would impact an essential facilities ability to provide services to its community. And unlike other localized hazards, earthquakes can affect an entire region which means neighboring facilities could be effected by the same types of damage, and may not be in a position to provide relief. There are several reasons why we seismically brace non-structural components. In areas of high seismicity, the code requires bracing all heavy components as a means to protect the occupants from falling hazards during a seismic event. In areas of low to moderate seismicity, the code requires bracing of critical components for “position retention”. We want to protect critical components from damage to themselves during a seismic event. ASCE 7-10 generally identifies these critical components as being: 1. Components required to function for life safety purposes after an earthquake, including fire protection sprinkler systems. Components containing hazardous materials. Components in an essential facility that are needed for the continued operation of the facility. Failure of a fire sprinkler system, gas lines, or loss of emergency backup power would make an essential facility unusable, even if the building structure is not damaged. Who is responsible for designing, detailing and installing seismic bracing for non-structural components?
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