Kerb overflow weirs – horizontal bars vs. vertical bars, Civil Engineering

Assignment Help:

Q. Kerb overflow weirs – horizontal bars vs. vertical bars?

Overflow weirs must be provided for steep roads (longitudinal gradient>5%), flat roads (longitudinal gradient<0.5%), sag points and blockage black spots. For steep roads the flow is rapid and overflow weirs must be provided to accommodate the excess flow. For flat roads, probability of accumulation of rubbish increases. So overflow weirs must be provided in these locations to avoid the stormwater flow just in case of blockage of gullies caused by trapping of rubbish.

Essentially kerb overflow weirs suffer from the disadvantage that it provides another passage for debris to enter the gullies and so bars (either vertical orhorizontal) must be provided to prevent the entry of debris into the weirs. For steep roads, as main concern is to provide an alternative route for excess flow, horizontal bars must be provided in this case to sustain better drainage efficiency. For flat roads, purpose of overflow weirs is to trap rubbish,so vertical bars must be provided since it is more effective in prevention of entry of debris.


Related Discussions:- Kerb overflow weirs – horizontal bars vs. vertical bars

Define the meaning of tensile stresses, Tensile stresses It has been po...

Tensile stresses It has been possible to introduce tensile stresses of upto 850 N/mm 2 in tendons with the use of this method. But the method is not suited in situations where

Construction, #questidisadvantage of steelon..

#questidisadvantage of steelon..

Minor losses using th method of loss coefficients, Minor Losses Using Th Me...

Minor Losses Using Th Method of Loss Coefficients One method of calculating the energy loss as a result of fluid flowing through a device or fitting, each device or fitting has

Lock entrance - docks, Lock Entrance: Wet docks have lock entrances to...

Lock Entrance: Wet docks have lock entrances to overcome the high fluctuations in water level in the sea. Figure 7 gives a layout of a lock entrance. It consists of a lock cha

Define surface communication-underwater inspection of bridge, Define Surfac...

Define Surface Communication - Underwater Inspection of Bridge? It is not necessary to have voice communication in all situations, particularly for shallow dives where the dive

What is the safe bearing capacity of wide strip footing, A loading test was...

A loading test was conducted with a 300 mm square plate at depth of 1 m under the ground surface in pure clay deposit. The water table is situated at a depth of 4 m below the groun

Design of steel lug angles with channel sections.., while designing the lug...

while designing the lug angles with the channel section what does "the force not acccounted for by the direct connection of member" mean?

Functions components of a typical expansion joint, Question What are the fu...

Question What are the functions components of a typical expansion joint ? Answer In a characteristic expansion joint, it normally contains following mechanism-joint sealant, jo

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