Afflux in rivers with non scourable bed, Civil Engineering

Q. Afflux in rivers with non scourable bed?

Afflux is defined as rise of flood level of the river upstream of a bridge as a result of the obstruction to natural flow caused by the construction of the bridge. It is caused either due to constriction of waterway by approach banks or on account of obstruction to flow caused by piers. Afflux results in increase of velocities in constricted section and at the obstructions. When riverbed has nonscourable strata or material, the increased velocities cannot scour the bed and therefore the boundary remains unchanged. Estimation of afflux under this condition is relatively simpler. When, however, the riverbed is sandy, it can scour easily due to increased velocities at the bridge.

Posted Date: 6/6/2013 3:08:48 AM | Location : United States

Related Discussions:- Afflux in rivers with non scourable bed, Assignment Help, Ask Question on Afflux in rivers with non scourable bed, Get Answer, Expert's Help, Afflux in rivers with non scourable bed Discussions

Write discussion on Afflux in rivers with non scourable bed
Your posts are moderated
Related Questions
Determine elongation because of self weight of bar:

#questidisadvantage of steelon..

im newer to the courses so i would like to know about the assignment types. in this case can u please show me a sample assignment?

closed traverse ABCDE form a regular polygon with fore bearing of line is 35 find the bearing of other lines

Roads in Marshy Areas: The Problems Encountered Roads passing through marshy and swampy ground and waterlogged areas have stable ground generally in a saturated condi

Q. Which type of pile cap transfers loads equally to piles, flexible pile cap orrigid pile cap? Loads from columns transferring to pile cap persuade tensile forces at the bott

Define the Equations for a Contracted Rectangular Weir If the rectangular weir is a contracted weir and the flow is restricted from passing freely through the weir opening, a r

Guiding Considerations in Planning: The following factors have a bearing on planning water transport facilities : (a)        Availability adequate land to accommodate the

how can you know that the civil war real.