When the water surface level of drain is at high flood level higher than the canal bed level the cross drainage work is called?
Cross Drainage Works MCQ Question 2 Detailed Solution
From the given data, We can conclude that HFL of the drain is higher than the bed level of canal and bed level of canal is higher than the bed level of drain, so the suitable type of cross drainage structure is syphon aqueduct.
When the bed level of the canal is higher than the HFL of the drainage then the structure is said to be?
Super passage: If the bed level of drainage is sufficiently above the FSL (Full supply level) of the canal the structure is known as a super passage.
What does it mean to gravity drain?
[′grav·əd·ē ′drān·ij] (hydrology) Withdrawal of water from strata as a result of gravitational forces.
When the FSL of the canal lies between the bed level and HFL of the drain?
1] Canal bed level is above HFL of Nala.
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| Sr. No | Aqueduct | Siphon Aqueduct |
|---|---|---|
| 1. | Drainage water flows freely under gravity. | The water runs under symphonic action. |
| 2. | HFL of drain is sufficiently below the canal bed. | HFL of drain is higher than canal bed but lower than FSL of canal. |
| 3. |
When the water surface level of drain is at high flood level?
A syphon aqueduct is constructed where the water surface level of the drain at high flood is higher than the canal bed.
When high flood drainage is large but short lived the crossing is a?
A level crossing is used when the canal water and drain water are allowed to intermingle with each other. This is adopted when high flood drainage discharge is short lived. 1.
When an irrigation canal is taken over canal is taken over the natural drainage is the cross drainage works is known as aqueduct True False?
Explanation: In Aqueduct and Syphon Aqueduct, the canal is carried over the natural drain. In level crossing and inlet and outlets, the canal water and drainage water are allowed to intermingle with each other. 2.
When a canal bed level is carried over HFL of a natural drainage The structure provided is known as?
An aqueduct is a hydraulic structure which carries a canal (through a trough) across and above the drainage similar to a bridge in which instead of the road or a railway, a canal is carried over a natural drain.
When a canal and a drainage approach each other at the same level the structure so?
It is called level crossing as canal and drain meet and cross each other at same level.
When canal runs above the drain the cross drainage work provided is?
The hydraulic structure in which the drainage is passing over the irrigation canal is known as super passage.
What is FSL and HFL?
The canal water level is referred as full supply level (FSL) and drainage water level is referred as high flood level (HFL). The HFL is below the canal bed level.
What is cross drain?
Although the term is often misused to describe a relief culvert, a cross drain is actually a ditch that moves water across the road and prevents the accumulation of runoff that may cause a road to wash out, or a fill to fail.
What is drainage syphon?
Siphon draining works by pumping water by gravity along primed siphon pipes. Wells are installed in or above the unstable zone of a slope and are pumped using siphons which exploit the natural sloping terrain. The wells reduce the pore pressure increasing the effective stress and stabilising the slope.
What is Superpassage?
(i) Super passage. A super passage is also similar to a bridge in which the natural drain is carried over the canal. A super passage is reverse of an aqueduct. A super passage is constructed where the bed of the drain is well above the canal F.S.L. The canal flows at atmospheric pressure under the work.
What does Aquaducts mean?
Definition of aqueduct
1a : a conduit for water especially : one for carrying a large quantity of flowing water. b : a structure for conveying a canal over a river or hollow. 2 : a canal or passage in a part or organ. Synonyms Did you know?
What is Bandhara irrigation?
It is a special type of irrigation practiced in some parts of Maharashtra. It is essentially a minor irrigation scheme consisting of diversion weir walls across small streams. Small canals taking-off from the U/S of the weirs and commanding small tracks of lands.
What is subsurface drainage?
Subsurface drainage is the removal of water from the rootzone. It is accomplished by deep open drains or buried pipe drains. i. Deep open drains. The excess water from the rootzone flows into the open drains (see Fig.
What are the four types of drainage?
The Four Types Of Drainage Systems For Your Home
- Surface Drainage System.
- Subsurface Drainage System.
- Slope Drainage System.
- Downspout and Gutter Systems.
- Contact All Aspects Waterproofing For Your Drainage Needs!
What are the two types of drainage?
There are two main types of drainage system options: surface drains and french drains. Surface drainage systems consist of a few ground-level areas drains that are connected to PVC piping. When it rains, water flows down the drains, into the piping, and is transferred away from the house.
