Sentences with phrase «build over a certain period of time»
Not exact matches
The hazard is expressed in terms of the probability of exceeding a certain level of shaking in 50 years — not only because the hazard in places like California is not expected to change much over that time period, but also because 50 years — the typical life span of a building — is a useful period of time for engineers.
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His team built a series of experimental ponds, each of which is warmed by a certain temperature range over a certain period of time.