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

Energy dissipation at outlets - typical drainage outlet, Q. Energy dissipat...

Q. Energy dissipation at outlets - typical drainage outlet? Flow velocity at outlets is generally high. Without proper control of this energy, subsequent bank erosion can resu

The effects of earthquake on spatial trusses, Evaluation of various reports...

Evaluation of various reports regarding the effects of earthquake on spatial trusses History and static In this section we aim to provide a summary report of what was happ

Shear stress, Shear stress distribution in circular section

Shear stress distribution in circular section

Zero energy building , this is our final year project .please help me to gu...

this is our final year project .please help me to guide about it

Determine the viscosity of water, A soil sample consists of particles rangi...

A soil sample consists of particles ranging in size from 0.6 mm to 0.02 mm. The average exact gravity of the particles is 2.66. Verify the time of settlement of the coarsest and fi

Calculate the total passive earth resistance on the wall, A  retaining wall...

A  retaining wall, 4.5 m high, retains a soil with  c = 2 N/cm 2 ,  φ = 30° and g = 20 kN/m 3 , with horizontal surface level with the top of the wall. The backfill carries a surch

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 are the parasitic forces for prestressing, Q. What are the Parasitic f...

Q. What are the Parasitic forces for prestressing? In statically determinate structures, prestressing forces will cause the concrete structures to end upwards. Therefore precam

State the procedure of prestressing, State the procedure of prestressing ...

State the procedure of prestressing When these wires cool down, concrete is poured in the moulds in which these tendons are provided in a stretched condition. Using this proces

Explain the terms void ratio, (a) Distinguish among Black cotton soil and L...

(a) Distinguish among Black cotton soil and Laterite from an engineering point of view. (b) Explain the terms 'Void ratio', 'Degree of saturation' and 'Water content', define 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