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Friday, January 13, 2012

Bidirectional Test Not Bisexual Test

Work in Construction field totally turn myself into 360 degree. I had to learn by myself so many new things especially in construction materials. Everything even a very little thing is consider as very important in construction.

So, today i learn a new word. Bidirectional Test. No, not bisexual test.

According to wikipedia, Bidirectional refer to anything that can move in two direction (Pls do not misunderstood the meaning).


Bidirectional Test also known as Static Load Testing that uses time and space saving approach by loading the pile resistance from the mid-pile or near-toe position instead of top loading. Whether in a low headroom{1} situation or within a cofferdam{2} in the middle of a river,   the bi-directional static load test has risen to every challenge. Widely adopted in the US for bored piles, this method is gaining wide acceptance elsewhere for its many benefits and advantages.(copy sources : Strainstall) 


Advantages : 
1) Mobility and space efficiency – eliminates the need for overhead beams or reaction piles.
2) Time efficiency – it only takes a few hours to prepare a shaft for the installation of the pre-manufactured bi-directional pressure cell.
3) Precision testing – simple to conduct, the bi-directional method provides engineers with separate data on the end bearing and frictional resistance of the shaft.
4) Cost efficiency – Bi-directional static load has proven to be much more cost-effective than traditional load testing methods
5) Versatility – The bi-directional static load test is useful on battered piles and sloping or belled shafts. Each shaft can be reused to carry working loads after the test is completed. This is done easily by grouting the test system. (copy sources : Strainstall) 


 For further details please refer here.. :P




source : google

I also still learning and reading to getting more info about this. Please join me! 


:)


{1} the distance between the actual performance of an algorithm to its maximum possible performance (s: wikipedia)
{2}  is a temporary enclosure built within, or in pairs across, a body of water and constructed to allow the enclosed area to be pumped out, creating a dry work environment for the major work to proceed (s: wikipedia)

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