What do you know about shallow piers, Civil Engineering

Assignment Help:

Q. What do you know about Shallow Piers?

In case of some of the existing bridges, piers may be shallow and grip may be found to be inadequate. Protection round piers is then required to be given for their safety. Minimum grip essential for safety is worked out as 1/4 the total height of existing pier from bottom to design H.F.L. At this level bed scour is required to be arrested by providing stone apron with adequate quantity to fully cover scoured face. Launching slope in sandy bedded rivers is assumed as 2 horizontal to 1 vertical. Size and thickness are assumed same as in case of apron of the guide bunds. If one man stone is found to be of insufficient weight to be stable, concrete blocks or stone crates are required to be used. Placing stone round piers at unnecessary higher level is inadvisable as it is liable to be displaced and washed down more easily. At the same time it is not a safe and feasible proposition to wait till river bed scours to just the safe level of 1/ 4 height to ensure minimum grip length. Dumping of stone has, therefore, to be resorted to a little earlier before the lowest safe level is reached.


Related Discussions:- What do you know about shallow piers

Vectors application, how does vectors apply mathamatical in civil engineeri...

how does vectors apply mathamatical in civil engineering

Hydrolic, how can i caculate volicity and tank capacity ?

how can i caculate volicity and tank capacity ?

Briefly explain the concept of wind-driven ventilation, Problem (a) Br...

Problem (a) Briefly explain the concept of wind-driven ventilation and outlines its benefits over mechanical/electrical means of ventilation. (b) Various factors and guidel

What is an ice dam sock, If you have never used an ice dam melting sock on ...

If you have never used an ice dam melting sock on your roof before, you will search that they give an inexpensive method for removing roof ice dams and improving your home's heatin

Simple bending, In case of simple bending after simply supported beam, deri...

In case of simple bending after simply supported beam, derive that M/I = s /y = E/R.

Fly levelling, what is meant by fly levelling and when it is carried out ?

what is meant by fly levelling and when it is carried out ?

Explain detention or retention ponds - hydrology, Explain Detention or Rete...

Explain Detention or Retention Ponds Detention/Retention Ponds: Designed to reduce and contain the peak runoff from developed areas (more impervious). Attempt to limit the runo

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