Seismic design

All submittals to the NRC concerning geology and seismic design 3asis for both structures and equipment. 

Seismic design basis for the reactor vessel (including attachments, pressure boundary, and CRD and internals). 

Seismic design basis for the main coolant loop piping and pumps, and for typical category I piping, e.g., the auxiliary feedwater line. 

Standard for the Seismic Design and Retrofit of Above-Ground Piping Systems. B31E-2008... 

Precast walls are used for two reasons to reduce the cost of the building through decreased field labor, and to shorten the schedule by constructing the walls and foundations simultaneously, The largest drawback for the use of precast structural elements is the design and detailing of connections. As in seismic design, special attention to ductility must be used. 

This chapter presents an overview of various details applicable to blast resistant structures. Many details for conventional steel and concrete structures, and specific details for seismic design, are applicable to these structures and are not included. Details should meet the requirements of design capacity, energy absorption, and ductility. 

Having keynoted the term "proper construction" as pertaining to brick liners, we must consider far more than the masonry itself. While it is not too difficult to specify materials or seismic design criteria for a given locale which should result in a safe structure, such things as bands, buckstays, breechings, annulus pressurization systems, and many other appurtenances can have a great effect on the service life of a liner. In this section, some of the major appurtenances shall be elaborated upon. 

Warehouse Building Provide seismic design of warehouse structural framing system using one of four types Bearing wall system Building frame system Movement-resisting frame system Dual system... 

Against earthquakes, typhoons, floods and others, plastics are valuable materials, both to prevent collapse and facilitate rescue. They enter into the seismic design of buildings and bridges, to strengthen the defenses with elements like kneecaps. They are in emergency facilities, tents, houseboats, artificial islands to bring the victims to... 

Step 5 Since the seismic design for pressure vessels is based on allowable stress rather than ultimate strength, the base shear may be reduced by a factor of 1.4. 

Procedure 3-4 Seismic Design—Vessel on Unbraced Legs, 125... 

Procedure 3-5 Seismic Design—Vessel on Braced Legs, 132... 

In this paper, the current seismic retrofitting systems for reinforced concrete piers/columns and bridge-falling prevention systems at the abutments and piers in Japan were studied. The application of epoxy resin for both systems was investigated and discussed. Furthermore, seismic design and construction for newly built structures were also introduced. 

Seismic Design for Newly Constructed Reinforced Concrete Columns. 

Unseating Prevention Devices. These structural systems complement the above seat length. The horizontal seismic design load is considered 1.5 times the vertical reaction due to dead load and the maximum design displacement for unseating prevention is 0.75xSE. 

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