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Feb 26, 2016 / Haseeb Jamal -

5 Travel Myths You Need to Stop Believing Right Now

Feb 26, 2016 / Haseeb Jamal -

Canal Comes Alive with Lighted Boat Parade.

Factors Affecting Type of Canal Lining

When the canal passes through the sandy soil the seepage loss is at maximum and the canal is unstable. So, to make the canal perfectly impervious and reasonably stable, the most impervious types of linings should be recommended such as cement concrete etc. The smoothness of the canal bed and sides increases the velocity of flow which further increases

Factors Affecting Design of a Barrage

Factors affecting the Design of Barrage are as follows: Estimation of Design Flood Hydraulic Units Width of Barrage Afflux Tail Water Rating Curve Crest Levels Discharges through a Barrage (Free Flow Conditions) Discharge through a Barrage (Submerged Flow Conditions) Fane's Curve Gibson's Curve

River Training Works

Force the river into restricted channel, to ensure almost axial flow near the weir site. (embankments in continuation of G-Banks. To contain flood within flood plains). Provided on the upstream in order to protect the area from submergence due to rise in HFL, caused by afflux. Embankment type structures constructed transverse to river flood, extending from the

Factors Affecting Structure Shape and Capacity of Culverts

Ideally, the axis of a culvert should coincide with that of the natural stream bed and the structure should be straight and short. This may require modification of the culvert alignment and grade. Often it is more practical to construct the culvert at right angles to the roadway. However, the

Determination of Discharge Capacity and Number of Spillways

The maximum discharge capacity and the number of spillways are determined by studying the following factors: By studying the flood hydrograph of past ten years, the maximum flood discharge may be computed which is to be disposed off completely through the spillways. The water level in the reservoir should never be allowed to rise above the maximum pool

Factors Affecting Location and Necessity of Spillways

The height of the dam is always fixed according to the maximum reservoir capacity. The normal pool level indicates the maximum capacity of the reservoir. The water is never stored in the reservoir above this level. The dam may fail by over turning so, for the safety of the dam the spillways are essential. The top of the dam is generally utilized by making road.

Design of Weir and Conditions for Stability & Maximum stress

In any hydropower projects the diversion structures occupies the key position. Among these diverging structures weir is the most commonly used structure, because of its simple design and operation. Different types of weir can be used as diverging structures some of them are given below: Sharp crested weir Broad crested weir Ogee weir Tyrolean weir weir with lateral intake etc

Design of Water Channel (Canals)

The channel is the same thing that is used for the water carriage purpose, however in case of hydropower projects the channel that takes water from the intake (Diversion Structure) is usually called connecting channel. It's tunnel is to be used in between the intake and power house otherwise called headrace channel, if no tunnel is to be used in between the intake and

Surge Tanks, Function and Types of Surge Tanks

Surge tank (or surge chamber) is a device introduced within a hydropower water conveyance system having a rather long pressure conduit to absorb the excess pressure rise in case of a sudden valve closure. The surge tank is located between the almost horizontal or slightly inclined conduit and steeply sloping penstock and is designed as a chamber excavated in the mountain.

Selection of a Suitable Site and Type of Cross Drainage Work

At the site, the drainage should cross the canal alignment at right angles. Such a site provides good flow conditions and also the cost of the structure is usually a minimum. The stream at the site should be stable and should have stable banks. For economical design and construction of foundations, a firm and strong sub-stratum should exit below the bed of the drainage at a

General Stability Criteria of Weirs

Stability analysis have been carried out for structures for most severe conditions of horizontal and vertical forces. Stability criteria are aimed at ensuring the overall safety of structure against overturning, flotation and sliding. The structures have been designed so that it should be safe against overturning at any horizontal plane within the structure at the base, or at a plane below

Cross Sectional Design of Typical Side Channel Spillways

The side channel design is concerned only with the hydraulic action in the upstream reach of the discharge channel and is more or less independent of the details selected for the other spillway components. Flows from the side channel can be directed into an open discharge channel or into a closed conduit or inclined tunnel. Flow into the side channel might enter the trough

Sand Trap Design Criteria & Location for Construction

Sand trap is a structure that is constructed to exclude the quantity of sand that is carried by water flowing in the channels or tunnels for power generation or irrigation or some other purposes. Sand trap is provided In the form of chambers that depends upon the discharge that is to be carried by the channel or tunnel. As it is general and true believe the life of dam

Clear Water Scour Scouring in Hydraulic Structures

Local scour is the Erosion occurring over a region of limited extent due to local flow conditions, such as may be caused by the presence of hydraulic structures. Scour is the result of the erosive action of flowing water excavating and carrying away material from the bed and banks of streams. Potential scour can be a significant factor in the analysis of a stream crossing system.

Clear Water Scour Scouring in Hydraulic Structures

Local scour is the Erosion occurring over a region of limited extent due to local flow conditions, such as may be caused by the presence of hydraulic structures. Scour is the result of the erosive action of flowing water excavating and carrying away material from the bed and banks of streams. Potential scour can be a significant factor in the analysis of a stream crossing system.

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