What do you mean by piston sampler, Civil Engineering

Assignment Help:

Q. What do you mean by Piston sampler?

In sampling silts orclays, Piston sampler is lowered into boreholes and piston is locked at bottom of the sampler. This stops debris from entering the tube prior to sampling. After reaching the sampling depth, piston is unlocked so that piston stays on top of the sample going into the tube. Prior to withdrawal of the sampler, piston is locked to prevent the downward movement and vacuum generated during movement of the piston from sampler's end aids in retaining the samples recovered. Sample recovery is increased by using Piston samplers.


Related Discussions:- What do you mean by piston sampler

What is meant by normally consolidated clay stratum, Determine what is mean...

Determine what is meant by normally consolidated clay stratum and over-consolidated clay stratum. Draw typical results of consolidation test data to a suitable plot relating the vo

Torsion, assumptions made in the simple torsion theory

assumptions made in the simple torsion theory

Softening test point, the importance of softening point of a bitumen materi...

the importance of softening point of a bitumen material in the design of a pavement

List the factor that affect the permeability of a given soil, List the fact...

List the factors that affect the permeability of a given soil. Determine the precautions that should be taken so that satisfactory permeability data may be obtained. Explaining

Concreat, m25 mix water cement ratio

m25 mix water cement ratio

What do you mean by internal fiction, Q. What do you mean by Internal ficti...

Q. What do you mean by Internal fiction? Absorptive materials have some elastic fibrous or porous structures that would be extended and compressed at the time of sound wave pro

Steps to determine hydraulic horsepower for pump problems, Steps to determi...

Steps to determine the hydraulic horsepower (whp) for pump problems:  1) Determine (h A ) by rearranging the Bernoulli equation.    2) Apply (h A ) into the equation found i

Survey.., collect the field deta manualy and drw the drawing as per scale

collect the field deta manualy and drw the drawing as per scale

How the bursting tensile forces produced, How the Bursting Tensile Forces p...

How the Bursting Tensile Forces produced These are tensile forces produced due to concentrated longitudinally applied prestressing forces in the end zone of a post-tensioned co

Reasons of ground heaving during pipe-jacking, Reasons of ground heaving du...

Reasons of ground heaving during pipe-jacking It is commonly recognized that ground settlement is one of the significant concern in pipe jacking operation. Though engineer mus

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