Explain foundation design discharge for a bridge, Civil Engineering

Assignment Help:

Q. Explain Foundation design discharge for a bridge?

To provide for an adequate margin of safety against any abnormal flood exceeding the design discharge (Q), the foundations, protection works and training works shall be designed for a higher flood discharge. This discharge shall be computed by increasing the design discharge (Q) estimated for waterway shall be based on (a) actual hydro-meteorological observations of the same or similar catchments (b) the computed flood with probable recurrence intervals of 50 years. The recurrence interval can be modified at the discretion of Chief Bridge Engineer based on the importance of the line.

i)

Catchment upto 500 sq.km.

30%

ii)

Catchment more than 500 sq. km. and upto 5000 sq. km.

30% to 20% (decreasing with increase in area)

iii)

Catchment more than 5000 sq.km. and upto 25,000 sq.km.

20% to 10% (decreasing with increase in area)

iv)

Catchment more than 25,000 sq.km.

Less than 10%(at the discretion of the Chief Bridge Engineer).


Related Discussions:- Explain foundation design discharge for a bridge

Determine the allowable bearing pressure of the sand, Two load tests were c...

Two load tests were conducted at a site-one with a 0.5 m square test plate and the other with a 1.0 m square test plate. For a settlement of 25 mm, the loads were found to be 60 kN

Calculate the horizontal distance, Calculate the Horizontal Distance A ...

Calculate the Horizontal Distance A surveyor's total station measured slope distance near station 3245+26.35 is recorded as 437.380-m with a zenith angle of 118º 48' 07" and a

Bending moment , The internal forces in any cross-section of a symmetric me...

The internal forces in any cross-section of a symmetric member in pure bending are equivalent toa couple M The moment of the couple is referred to as the bending moment in the s

Project, Can I get an online project to work on in civil engineering??

Can I get an online project to work on in civil engineering??

Bleeding test for grout – an essential requirement, Q. Bleeding test for gr...

Q. Bleeding test for grout – an essential requirement? Bleeding is a form of segregation in that a layer of water migrates to surface of the grout at the time of the initial st

Define reactivity - hazardous waste, Define Reactivity - Hazardous Waste ...

Define Reactivity - Hazardous Waste - Undergoes violent Change w/o detonating - reacts violently with water - Forms potentially explosive mixtures with water - generat

Void ratio and dry density of a soil, Q. Define water content, void ratio ...

Q. Define water content, void ratio and dry density of a soil. If wet density of a soil is 1.9 gm per cm at a moisture content of 24%, what will be its dry density?  Ans. - W

Postensioning in raft foundation, how can we post tension a raft foundation...

how can we post tension a raft foundation? what design procedure should we follow to post tension raft foundation in order to decrease the concrete and steel volume and increase th

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