Caso Pv+Ph/Pv+Sh/Sv+Ph/Sv+Sh.
| 15:44 Oct 29, 2023 |
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| Spanish to English translations [PRO] Tech/Engineering - Construction / Civil Engineering / Calculation of stress/strain of steel mesh installed on a building - façades and terraces. | |||||||
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| 4 | Case Pv+Ph/Pv+Sh/Sv+Ph/Sv+Sh. |
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Answers
2 hrs confidence: 
Case Pv+Ph/Pv+Sh/Sv+Ph/Sv+Sh. Explanation: Primary waves Main article: P wave Primary waves (P-waves) are compressional waves that are longitudinal in nature. P-waves are pressure waves that travel faster than other waves through the earth to arrive at seismograph stations first, hence the name "Primary". These waves can travel through any type of material, including fluids, and can travel nearly 1.7 times faster than the S-waves. In air, they take the form of sound waves, hence they travel at the speed of sound. Typical speeds are 330 m/s in air, 1450 m/s in water and about 5000 m/s in granite. Secondary waves Main article: S wave Secondary waves (S-waves) are shear waves that are transverse in nature. Following an earthquake event, S-waves arrive at seismograph stations after the faster-moving P-waves and displace the ground perpendicular to the direction of propagation. Depending on the propagational direction, the wave can take on different surface characteristics; for example, in the case of horizontally polarized S waves, the ground moves alternately to one side and then the other. S-waves can travel only through solids, as fluids (liquids and gases) do not support shear stresses. S-waves are slower than P-waves, and speeds are typically around 60% of that of P-waves in any given material. Shear waves can not travel through any liquid medium, so the absence of S-waves in earth's outer core suggests a liquid state. https://en.wikipedia.org/wiki/Seismic_wave I apologise for providing an answer from Wikipedia but it's enough to get you started. As I mentioned, I'm no expert on the subject, although I do have some experience translating and reviewing texts from the civil engineering field. |
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Reference comments
1 hr peer agreement (net): +1 |
| Reference Reference information: In P or compressional waves, the vibration of the rock is in the direction of propagation. P waves travel fastest and are the first to arrive from the earthquake. In S or shear waves, rock oscillates perpendicular to the direction of wave propagation. In rock, S waves generally travel about 60% the speed of P waves, and the S wave always arrives after the P wave. For example, sound waves are P waves at a high enough frequency to hear with your ear. An example of an S wave is wiggling or shaking a rope which is tied down at one or both ends. https://earthquake.usgs.gov/earthquakes/events/1906calif/18a... I'm no expert but I think it's worth researching horizontal and vertical (com)pressional waves and shear waves. -------------------------------------------------- Note added at 5 days (2023-11-03 17:27:29 GMT) -------------------------------------------------- I'm glad you found the answer and thank you for letting us know! |
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