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

Pavement width - geometric design of roads, Pavement Width: The pavem...

Pavement Width: The pavement widths commonly adopted are : Single lane                 :           3.75 m Intermediate lane     :           5.5 m Two lane

Advance structure engg, need help for assignment that requires strand 7 and...

need help for assignment that requires strand 7 and autocad

What is raft foundation, Q. What is Raft Foundation? A raft or mat is c...

Q. What is Raft Foundation? A raft or mat is combined footing that covers the entire area beneath a structure and supports all the walls and coloumn when the allowable soil pre

Calculate the total labor cost per cubic yard, A contractor will place 90-c...

A contractor will place 90-cubic yards of concrete for a housekeeping pad on the rooftop of a 36-ft tall building. Site conditions dictate that the safest and best method of placem

Flow diagram of wet process, what type of basin in which is stored and wha...

what type of basin in which is stored and what is silos what is channel and correcting basins what type of clinker is formed

Air pollution, chlorosis in plants is caused by

chlorosis in plants is caused by

How to calculate the coefficient of permeability, The discharge of water co...

The discharge of water collected from a constant head permeameter in a period of 15 minutes is 500 ml. The internal diameter of the permeameter is 5 cm and the measured difference

Rcc flooting, Explain the simple square footing, simple squral footing an...

Explain the simple square footing, simple squral footing and slop footing with the help of drawing

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