False set in pile driving, Civil Engineering

Assignment Help:

Q. False set in pile driving?

For pile driving in certain soils such as dense silt and weathered rock, occurrence of false set phenomenon isn't uncommon. During the driving process, negative pore water pressure is developed and driven piles appear to have sufficient capacity during pile driving as the built-up of negative pore water pressure results in an apparent temporary increase in driving strength andresistance. Though sometime after the pile driving, dissipation of this negative pore water pressure will decrease the bearing strength in resisting the design loads. Occasionally the presence of cracks along pile sections can bring about the problem of false set by dampening effect of stress wavesby these cracks. To evade the problem of false set, a specific percentage of constructed piles must be chosen to perform re-driving to check for false set phenomenon.


Related Discussions:- False set in pile driving

Levelling, the cooke''s reversible level

the cooke''s reversible level

Thermocouples are utilized for the measurement of what, Thermocouples are u...

Thermocouples are utilized for the measurement of what temperature? Answer: It is utilized for the measurement of temperature.

Probable distribution function, The diameter of an electric cable, say X, i...

The diameter of an electric cable, say X, is assumed to be continous random variable with pdf;f(x)=6x(1-x), 0 b}.

Illustrate the design discharge for foundation, Q. Illustrate the Design di...

Q. Illustrate the Design discharge for foundation? To provide for an adequate margin of safety, the foundation and protective works of a bridge should be designed for a flood d

Application of embankment condition for drainage design, Q. Application of ...

Q. Application of embankment condition for drainage design? In considering loads on buried pipeline, there are generally two scenarios: narrow trench condition and embankment (

Hybridisation, Why hybridisation never take in isolated atom

Why hybridisation never take in isolated atom

Explain the contracted rectangular weir, Explain the Contracted Rectangular...

Explain the Contracted Rectangular Weir Weir plate has sides which extend above the maximum water surface, directing the flow through an opening (b = weir length). Typically th

Design the curtain to touch the seabed, Question For fixing of silt cur...

Question For fixing of silt curtains, what is the reason that it does not desirable to design the curtain to touch the seabed ? Answer Silt finished are resistant ve

Write Your Message!

Captcha
Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd