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

#titlecivil war.., how can you know that the civil war real.

how can you know that the civil war real.

What do you mean by elastomeric bearings, Q. What do you mean by Elastomeri...

Q. What do you mean by Elastomeric bearings? Steel bearings are good but suffer from problems of corrosion and high level of maintenance. Due to these problems of steel bearing

Physical classification of stones, Physical Classification Based on the...

Physical Classification Based on the structure, the rocks can be classified as following: Stratified rocks Un -stratified rocks A.   Stratified Rocks: These ro

PORTAL FRAME, EXPLAIN SITUATION OF THE PORTAL FRAME CAN CAUSE SWAY WITH THE...

EXPLAIN SITUATION OF THE PORTAL FRAME CAN CAUSE SWAY WITH THE AID OF A DIGRAM

Explain the unconfined compression strength of the clay, A square group of ...

A square group of 9 piles was driven into soft clay extending to a large depth. The diameter and length of the piles were 30 cm and 9 m respectively. If the unconfined compression

Varignon''s Theorem, What is the easiest way to give proof the varignon''s ...

What is the easiest way to give proof the varignon''s theorem? Help please guys

Define recommendations for confined elastomeric pad, Define Recommendations...

Define Recommendations for confined elastomeric pad?  (a) Permissible limits for confined pressure on elastomer pad depends upon effectiveness of internal seal preventing it fr

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