Indonesia is a country prone to earthquakes. Viewing a massive earthquake that had rocked our country, it seems all most of the buildings in our country is not designed earthquake-resistant buildings. As a result, when the earthquake came, buildings that had seemed solid, collapsed easily.
In response, ITS, designing earthquake-resistant housing is cheap and durable. Ir is Tavio MS PhD, lecturer at the Department of Civil Engineering ITS, who initiated the construction of earthquake-resistant housing that is simple and environmentally friendly.
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According to Tavio, houses built with non-prace system was able to survive without collapsing when hit by an earthquake in the range of 7.5 on the Richter scale as has happened in the country of Haiti recently. At that strong earthquake shocks, the design house will be damaged Tavio only about 50%.
Tavio even guarantee, home design able to withstand an earthquake measuring 8.9 on the Richter scale as occurred in Aceh in 2004. In an earthquake like in Aceh, recognized Tavio, this house is going badly damaged, it’s just not until they collapsed. By doing so, the residents can save themselves and other occupants out of the house. “The design of this house point on the safety aspect of life residents of the house,” he said.
To build houses earthquake-resistant, Tavio choose the method of pre-printed. The reason, strength and quality of concrete guaranteed (more controllable) krn made with fa-brikasi system. Development is even faster, saving construction costs when mass produced, the concrete is more durable and long lasting for guaranteed durability, as well as environmentally friendly.
“During this time, the concrete casting technique many poor homes, causing segregation (separation of gravel and cement paste) which makes the porous concrete. Mistakes are inevitable with precast system, for monitoring the production process rigorous and thorough, “. wooden structure and concrete cast, this house is also comparatively more resistant and high yielding. Wooden houses vulnerable to fire, termites, water, and weather. While the house of the concrete takes a long time in the development process and more expensive.
It was clearly different from the pre-printed tech homes. In addition to a faster, economical, and durable, this house is also safer from earthquake shocks. When a mild earthquake, the building will not be damaged at all. At moderate earthquake, the building can be sj damaged, but only on non-structural elements, while the elements of the structure is still intact. And if there is a fairly large earthquake, the building will be damaged but did not collapse.
“That is the philosophy we use when choosing precast technology to build earthquake resistant houses. Therefore, we see the wood or cast concrete technology has many weaknesses because there are earthquake resistant. ”
There are two systems that can be applied to the structure of precast houses, namely open frame structural system (open frame) and frame structural system walled filler (infilled frames). Open frame is syistem structure consisting of a frame beam column to hold the load of the earthquake, where the wall charger is not taken into account the burden of the earthquake.
While infilled frame is a system that consists of a frame structure beam column to withstand earthquake loads, where the wall charger calculated rigidity to bear the burden of the earthquake. How does the development process? In more detail, Tavio outlines, before implementation of housing construction starts, do bouw-plank installation, create a boundary markers and foundation construction.
It is noteworthy, peg foundation must be laid perpendicular to each axis. At the same time, dig the soil as deep as approximately 1 meter and then, flatten the base excavation, add sand as thick as 10 centimeters, and then condense. “After that plug palm of precast foundation and s £ oo / her one by one until lapped it all into the house intact.”
Keen to build earthquake-resistant houses? Cost to build earthquake-resistant houses is around Rp 60 million per unit to the floor. When created two floors, the cost to Rp 90 million per unit. It did not take long to build, only about three days with a workforce of up to five people.
Cost is still preliminary calculations. “The cost can be reduced up to 50% if the house my draft was produced by mass,” said Tavio. Meanwhile, ITS rector Priyo Suprobo, the supervision of the design of earthquake-resistant homes have said, this is indeed a new home for the draft but already passed various tests in detail and meticulous. By doing so, the capability in the face of a big earthquake it can be accounted for.
According to Priyo, this house is very suitable to be built for various regions in Indonesia are prone to earthquakes. Therefore, it would gladly bring down the entire staff to make it home if requested by the government.