Hilltop, Batangas City
College of Engineering
“READINESS AND RESPONSE”
EARTHQUAKE AND ITS DESTRUCTIONS
In Partial Fulfillment in
English Communication 1
(ENG 101)
Researchers:
Andal, Arvin William C.
Arriola, Charlotte May B.
Balmes, Ivan Macdowell J.
Casas, Camille R.
Lopez, Sharlyn B.
Manalo, Christian Joseph F.
Ona,Vince Joseph M.
Pentinio, Joanne A.
Roxas, Mark Anthony B.
(EE3/ME3)
II. BRIEF INTRODUCTION
The earth is a dynamic, evolving system. It’s all over in a matter of second. But Earthquakes have a way of stretching time. They can make a half a minute seem like forever. And when earthquakes occur, when the ground shakes and building sway, you may think that it is the end of the world. The earthquake, considered as the independent natural phenomenon of vibration of the ground, in very few cases poses a threat to humans, as for example when it causes major landslide or tidal wave ( tsunami). The earthquake becomes a dangerous phenomenon only when it is considered in relation with structures. Of course, the problem is the structure under seismic excitation and not the earthquake itself. This is because the structural system is designed basically for gravity loads and not for the horizontal inertia loads that are generated due to ground accelerations during an earthquake. Therefore, the earthquake has begun to become a problem or humans since they started building. Since the early steps of the technological development of mankind the joy of creation was associated with the fear that some superior force would destroy in few seconds what was built with great effort over a lifetime. In other words, the earthquake was always associated with the structure and therefore it mainly concerns the structural engineer. Although destructive earthquakes a confined to certain geographical areas, the seismic zones, the large-scale damage that they cause in densely populated areas and the number of deaths are such