"earthquake level" is correct and can be used in written English.
For example, you might write, "The roar of the jet engines was at earthquake level."
The results show that all the SMA-RC piers have very low probability of collapse at maximum considered earthquake level.
In general, the decision-making to restart the NPP after the seismic event requires more than 1 month if an earthquake exceeds operating basis earthquake level.
A seismic risk analysis has been performed to evaluate the seismic safety of a nuclear power plant for strong earthquakes beyond a design earthquake level.
Furthermore, unsafe stress states are highlighted for the columns of the tower under seismic action scaled at the maximum considered earthquake level.
This study will observe the effect of out-of-plane offset of frame in a concrete regular MRF designed using DDBD method for two different earthquake level.
Initially carried out by assuming an elastic behaviour of columns, the analyses highlight unsafe response conditions under seismic action scaled at the basic design earthquake level, and near-collapse caused by the loss of support of several girders from the neoprene pads at the maximum considered earthquake level.
Few of the buildings are older than 1906, the year that the Great Earthquake levelled a nascent Santa Rosa.
These combined frame and wall system models are subjected to the design based and maximum considered earthquake levels of selected ground motions.
Their seismic performance is evaluated analytically under three different earthquake levels by modeling connections with two different moment-hardening ratios and two different hysteretic behavior models.
The modular frame had acceptable strength and stiffness within fortified intensity shake earthquake levels, and it satisfied ductility requirements without much structural failure.
The quintessential example comes from Japan itself: in 1995, an earthquake levelled the port city of Kobe, which at the time was a manufacturing hub and the world's sixth-largest trading port.
