Phenomenon 2: All trees and telephone poles are upright as before, and there is no direct injury. For example, the 65-meter-high microwave relay tower in Tangshan stands tall in the ruins, and the two microwave towers can still transmit TV signals directly and accurately after the earthquake.
Phenomenon 3: The civil air defense tunnel in Tangshan is not damaged except for a few small cracks.
Phenomenon 4: After the Tangshan earthquake, most of the ground and pavement are exactly the same as before the earthquake, except for local fluctuations in some areas due to the collapse of mined-out areas or other influences.
Phenomenon 5: There are three three-story buildings in Tangshan Model School, which are in the same shape and arranged in parallel, with a distance of10m. In the earthquake, a building in the south completely collapsed, and the middle building was only partially scattered. Even if it is a building, some buildings are seriously damaged on the first floor, some on the second floor and some on the third floor.
Phenomenon 6: Tangshan Qixin Cement Factory has a three-story warehouse. The first and second floors are basically intact, but the window columns on the third floor are broken. And the rotation direction and angle are different. The largest rotation angle is 40 degrees to the right, and the larger rotation angle has already fallen off.
Phenomenon 7: None of the casualties of the Tangshan earthquake died directly from vibration, and most of them were victims of building collapse.