What is a nonstructural component?
Nonstructural components consist of equipment and systems that are supported vertically and laterally by a structural framework independent of the component itself — a piece of equipment supported by a building frame, for example.
Is it a nonstructural component or a nonbuilding structure?
ASCE 7: Minimum Design Loads for Buildings and Other Structures defines a nonbuilding structure as a “self-supporting structures that carry gravity loads that may be required to resist the effects of earthquake.” Nonstructural components are defined as architectural, mechanical, plumbing or electrical compo- nents “ …
What is a seismic component?
Seismic component devices are innovative structural elements designed to protect bridges during extreme hazards, such as earthquakes, by absorbing or dissipating input external energy. Two most commonly used seismic component devices are seismic isolators and dampers.
What are the non-structural elements of a building?
The design of every structure subject to seismic movements should consider that the non-structural elements in the building, such as ceilings, panels, windows, and doors, as well as equipment, mechanical and sanitary installations, etc., must withstand the movements of the structure.
What are non-structural buildings?
A nonbuilding structure, also referred to simply as a structure, refers to any body or system of connected parts used to support a load that was not designed for continuous human occupancy.
How is seismic design category determined?
1.10 Seismic Design Category: A classification assigned to a structure based on its occupancy category and the severity of the design earthquake ground motion at the site (as defined in IBC and ASCE 7).
Who determines the seismic design category?
* Seismic Design Categories obtained directly from the USGS Seismic API service. Local codes and ammendments may govern, verify with local building department or jurisdiction.
What are the common difference of building structures to nonbuilding structures?
The primary differences between buildings and nonbuilding structures are in the occupancy of the structures and the structural systems used. As mentioned above, the limited occupancy of these nonbuilding structures reduces the hazard associated with their performance in seismic events.
What is considered a non building structure?
What is importance factor for seismic design?
In seismic design, occupancy importance factor (IF) is a multiplier to increase or decrease the design base shear, according to different occupancy categories or the importance class of a building. All other buildings are included as a lower occupancy category.
What is the component importance factor?
The component importance factor, Ip, shall be taken as 1.5 if any of the following conditions apply: The component is required to function for life-safety purposes after an earthquake, including fire protection sprinkler systems. The component contains hazardous materials.
What is a seismic design category B?
Seismic Design Category B – Corresponds to buildings of Occupancy Groups I,II and III where expected ground shaking will be moderate. Seismic Design Category D -Corresponds to buildings and structures in areas expected to experience severe and destructive ground shaking But NOT located close to a major fault.
What is the seismic design philosophy for buildings?
The earthquake design philosophy may be summarized as follows (Figure 1): (a) Under minor but frequent shaking, the main members of the building that carry vertical and horizontal forces should not be damaged; however building parts that do not carry load may sustain repairable damage.
What is seismic design category C?
Seismic Design Category C – Corresponds to buildings of Occupancy Groups IV ( Hospitals, Police Stations Emergency control centers etc) I where expected ground shaking will be MODERATE AND buildings of occupancy categories I, II, and III where MORE SEVERE ground shaking will occur.
How do earthquake-proof buildings are designed?
Buildings designed to withstand violent earthquakes have deep foundations and driven piles , so to stabilize these rigorous forces. Structural engineers must ensure that the foundations are connected so they move as a unit. In earthquake-proof building designs, the diaphragms are a key component in the building’s structure.