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

Torsion, Asolid circular shaft of 25 cm diameter is to be replaced by a hol...

Asolid circular shaft of 25 cm diameter is to be replaced by a hollow shaft .The ratio of external to internal diameters being 2to1.Find the size of the hollow shaft if the maximum

Use Structural Analysis in Engineering, As per Australian Standard AS 1170,...

As per Australian Standard AS 1170, what are the different types of loads that can be encountered by structures which need to be taken into account for their design?

Define cast iron substructure - inspection of bridge, Define Cast iron subs...

Define Cast iron substructure - Inspection of bridge? Cast Iron also has the problem of corrosion due to atmosphere, which is similar to that of steel. However, in acidic or br

Determine the flow area of storm water, Storm water flows at a depth of 4 f...

Storm water flows at a depth of 4 ft in the natural channel as shown in the figure. The channel has a slope of 0.0l ft/ft and n = 0.025. 1. Determine the flow area:

Mr Kamal Saxena, What is WBM road. How it is constructed?

What is WBM road. How it is constructed?

Explain the national primary drinking water standards, Explain the National...

Explain the National Primary Drinking Water Standards Safe Drinking Water Act (SDWA, 1974) required EPA to establish maximum contaminant levels (MCLs) for public water systems

Building classification, Why I is the missing after h and J is written in t...

Why I is the missing after h and J is written in the classification of building

ceramics is what type of materials, Ceramics is what type of materials ? ...

Ceramics is what type of materials ? Answer: It is  an insulators.

Explain types of bearings, Q. Explain types of bearings? The bearing tr...

Q. Explain types of bearings? The bearing transfers the forces coming from the superstructure to the substructure. It also allows for necessary movements in the superstructure

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