Wood Steel
Concrete Homes Stand Up to Earthquakes
In the good practices, concrete homes are among the safest and most durable species of structures in the world during an earthquake. Homes built with reinforced concrete walls have a record of surviving earthquakes intact, structurally sound and largely pristine.
In reinforced concrete construction, the combination of concrete and steel, the three most important properties for earthquake resistance: stiffness, strength and ductility.
Why Buildings Survive Earthquakes
Scientists studying damage caused by earthquakes to determine what type of buildings best able to withstand earthquake vibrations. The modern earthquake-resistant design is based on several recent studies:
1989, 1994, 2000
Loma Prieta earthquake, Northridge, Yountville / Napa
Magnitude 7.1, 6.8, 5.2
Studies Uni.of California, Berkeley, NAHB Research Center, Stanford University
Studies damage of the earthquake show always well anchored shear walls are the key to the earthquake in low-rise buildings.
Optimal design conditions include shear walls that Extend full height, and on all four sides of the building. Long walls are stronger than short walls and solid walls are better than those with a lot of openings for windows and doors. These elements are designed to survive severe sideways (in-plane) forces, as shelves and drawers, with no damaged or bent away from the Situation. Shear walls must also be well anchored to the foundation structure to work effectively. Properly installed steel reinforcing bars across the joint between the walls and extend the foundation to provide a secure anchorage to the foundation.
Why Buildings Fail?
Low-rise most earthquakes do not have the necessary stiffness, strength and toughness to resist the forces of an earthquake or had walls that are not well anchored on a solid foundation, or both. Three types of buildings sustained significant damage to:
Multi-story building with Ground floor, the only columns:
Most of these buildings were 3 to 4 stories tall with a garage or a living with many large Windows on the ground floor. The columns can be strong enough to hold up the structure, but does not provide adequate levels of resistance to seismic event shelves. When the earthquake The building shook side by side and the upper floors sometimes tilted to one side. Whether built of wood, steel or concrete, they all hurt.
Wooden houses with weak connections between the walls and foundations:
Wooden buildings are surrounded by nature) or ductile (flexible, an attribute is in an earthquake. However, the tremors sent some of these homes sliding to the side. Often the walls were strong enough, however, was the connection establishing a weak point that gave way.
Un-reinforced masonry or concrete buildings:
Masonry or concrete walls not reinforced with steel bars is not flexible enough to be effective shear walls. And if there is no steel connects its foundation, the connection between wall and foundation can be a weakness.
Why do reinforced concrete is safe
Reinforced concrete walls to withstand pressures and reinforcing steel to resist tensile forces generated by an earthquake.
The concrete is poured around the bars, it locks into place. The exceptional toughness of the steel to resist tensile forces to be combined resist with the Rock as the ability of the concrete under pressure, which results in an excellent combination of the three major earthquake safety properties: stiffness, strength and ductility. A study revealed at Construction Technology Laboratories, that even a lightly reinforced concrete shear wall about six times the racking load resistance a framed wall construction.
It is no wonder that modern reinforced concrete buildings found to survive This recent earthquake with the often significant to injury.
As a company, Exodus abroad choose only steel-reinforced concrete construction homes in the best quality on the island of Kefalonia, Greece. They have many years to build a good knowledge the local property market and with their experience in the construction, professional integrity and the choice of Kefalonian professionals with more than 18 years of construction experience, they offer an exceptional Quality build concrete homes with high standards as the flagship standard, the reasonable and fair prices.
They offer help on your house and home design, what the requirements and guide you through the entire process from build permit application until the completion of your home, Kefalonia.
They should ensure that your purchase abroad goes as smoothly as possible and you will get your home without stress and problems, ready for you to enjoy. To see their site, here click.
About the Author:
Article Source: ArticlesBase.com – Kefalonia, Greece Off Plan Homes – Concrete or Steel? That is the Question
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