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Date & Time in Bali

CURRENT LOCAL DATE AND TIME IN BALI:

Sunday, 24th January 2021
12:24:41 pm

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Why is stability of a wooden prefab structure so important

 

Horizontal stability of a wooden prefab structure (thus also prefab houses) is always a main issue. Due to the fact that timber inter-connections do not fit exactly (like steel connections do), the structure is extremely sensitive for horizontal movements (displacements). It is not so difficult to horizontally move a wooden framework by hand, unless proper bracings are provided. 

While earthquakes are of minor concern for a wooden house due to flexibility of the wooden structure, the same flexibility is of major concern when a hurricane or a cyclone strikes. The inter-connecting timber parts shall not only be strong enough to absorb the immensely high wind loads, the stability of the house is most important. The high wind pressure loads can easily be absorbed by the tropical hardwoods that we use, however the strength of a wood species does not contribute at all to overall stability. To accomplish this, additional and sometimes far-reaching measures need to be taken (which unfortunately has a negative impact on the price of the house). The second area of concern is the roof structures. Most people believe that it is the wind pressure which may disintegrate a roof. This is a misconception. It is the wind suction which does the major damage. Our engineers have a vast experience in dealing with these problems and knbwo how to solve this.

CONCLUSION: Relying on only the strenght of the materials is not sufficient. An analysis on the stability shall equally be carried out.  

 

Reviews from Bali Prefab World

On November 7, 2013 typhoon Haiyan, known as typhoon Yolanda in the Philippines, was the second deadliest on record that hit the archipelago killing over 4,000 peoiple which we deeply regret. The system's one-minute sustained winds reached to 315 km/h (196 mph), unofficially making Haiyan the 4th most intense tropical cyclone ever observed and made it the strongest tropical cyclone to make landfall on record. Our engineering department designs our units in cyclone areas to cyclone rating and have added a 10% additional wind force to the general cyclone design codes to cope with global warming, introducing stronger cyclones in the future. Our unit A-2 sustained typhoon Haiyan and survived. This is what the owner wrote us:
"There were minor damages and the roof remained fully in tact. Your clients should know though that this house was properly designed and built with typhoons in mind. Good job Bali Prefab World".
Review from: Ron Catto, Philippines
Project: 50 m2 unit
Date: 21-11-2013
Rating: 5 out of 5.

Read more testimonials from Bali Prefab World: click here
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