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

Torque, A shaft 9 m long is subjected to a torque 30 t-m at a point 3 m dis...

A shaft 9 m long is subjected to a torque 30 t-m at a point 3 m distant from either end. The reactive torque at the nearer end will be?

Evaluate dimensions of apron according to spring and gale, Q. Evaluate dime...

Q. Evaluate dimensions of apron according to Spring and Gales? Dimensions of apron according to Spring and Gales. Gales and Sethi favoured uniform thickness of laid apron while

BRIDGES, WHAT ARE THE DIFFERENT TYPES OF BRIDGES

WHAT ARE THE DIFFERENT TYPES OF BRIDGES

Draw the variation in total stress, Draw the variation in total stress, eff...

Draw the variation in total stress, effective stress, and pour water pres- sure up to a depth of 6 m below ground level, given the following data. The water table is 2 m below grou

Explain dielectric breakdown, Explain Dielectric breakdown Dielectric ...

Explain Dielectric breakdown Dielectric breakdown means failure or deterioration of the dielectric material because of various reasons.

Advantages and disadvantage of using timber fenders, Question What are ...

Question What are advantages and disadvantage of using timber fenders , plastic fenders and rubber fenders ? Answer Timber fenders - They are low in power and a

Road drainage and maintenance, Road Drainage and Maintenance: The life...

Road Drainage and Maintenance: The life of a road depends upon how well and quickly the water is drained away from its various components. Similarly, regular and periodic insp

Measure the safe load on the pile, A wood pile of 10 m length is driven by ...

A wood pile of 10 m length is driven by a 1500 kg drop hammer falling by 3 m to a final set equal to 1.25 cm per blow. Measure the safe load on the pile using the Engineering Ne

What do you mean by stock verification sheets, Q. What do you mean by Stock...

Q. What do you mean by Stock Verification Sheets? The proper custody and accountal of stores is the prime duty and function of an executive or the stockholder. To ensure this v

Stress strain curves, stress strain curves for any materials with an explan...

stress strain curves for any materials with an explanation

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