Civil Engineering Technical Questions Answers - Ask a Civil Engineer - Recent questions and answers in Hydraulic Structures

Answered: what are the types of dams?

Wed, 23 Sep 2015 23:28:47 +0000

Following are the Types of Dams:

Classification of dams on the basis of materials used in dam construction

Rigid Dams (Concrete dams, steel dams, timber dams etc)
Non-Rigid dams (Beam Design Formulas , rockfill dams)

Classification of dam types with respect to size/height of the dam

Low dam / Small dam (How to build small dams)
Medium dams
High dam / Large dams

Classification of dam according to its purpose/use

Water supply dam/Irrigation dams
Power dams
Multipurpose dams
Flood control dams

Answered: difference between notch & weir???

Thu, 17 Sep 2015 09:19:54 +0000

Notches are openings which is used to measure discharge through it. However a weir is a notch but in a very large scale.

A Notch is used to measure relatively smaller discharge(examples include discharge in a flume, water lining etc) while a weir is used to measure larger discharge(examples are discharge in a stream or river,strome discharge etc.)

Answered: What is the necessity of canal lining?

Tue, 15 Sep 2015 09:47:10 +0000

To prevent percolation

Answered: State any four essential requirement of site for construction of diversion weir.

Fri, 11 Sep 2015 04:16:55 +0000

http://www.aboutcivil.org/site-selection-for-barrage.html

Answered: what is the difference between dam, barrage and reservoir?

Thu, 10 Sep 2015 08:09:54 +0000

Reservoir :- It is a store house to store the water.These may be created in river valleys by the construction of dam.Ex:Osman sagar reservoir on Musi river in Hyd.

Dam:-
• Dams are artificial barriers across a flowing river or any other natural water body that are meant to obstruct, direct, or slow down the flow of water, thus creating a reservoir or a lake.
Ex: Nagarjuna sagar Dam

Barrage:-
• A barrage is an artificial obstruction at the mouth of a river that is used to increase its depth to assist in navigation or for irrigation purposes.
Ex: Doweleshwaram Barrage

Answered: purpose of barrage

Thu, 10 Sep 2015 03:23:23 +0000

Barrage consists of a line of large gates that can be opened or closed to control the amount of water passing the dam. The gates are set between flanking piers which are responsible for supporting the water load. They are often used to control and stabilize water flow of rivers for irrigation systems.

Answered: what is the reynolds number for laminar flow

Tue, 08 Sep 2015 07:54:55 +0000

For laminar flow the reynolds number is less than 2000.

Answered: define sp. Gravity

Tue, 08 Sep 2015 07:47:03 +0000

Specific gravity is the ratio of specific weight of a fluid to the specific weight of a standard fluid. For liquids, the standard fluid chosen for compassion is pure water at 4 degree celsius. For gases the standard fluid chosen is either hydrogen or air at some specifed temperature and pressure. The specific gravity of water at the standard temperature is equal to 1 while that of mercury is 13.6.

Answered: How to design a spillway?

Mon, 07 Sep 2015 05:49:23 +0000

The design of spillway is complex process and involves many factors to be considered in the design process i.e
1. Design discharge
2. HFL
3. Minimum flow through the year
4. Maximum flow during the year etc
for detail design process plz send me these parameters so that i can design a spillway for u so that u can better understand it.(www.enggpedia.com)

Answered: how to design a super passage, give design steps in detail??

Mon, 07 Sep 2015 04:50:29 +0000

super passage is a structure provided over a water course. its design is some what similar to that of culvert but for detail design please to design of hydraulic structrue book (by USBR)

Answered: what is the engeneering significance of force on submerged curved surface

Fri, 04 Sep 2015 04:34:16 +0000

Well force on submerged and curved bodies has got a vital in role in modern era as well as in past time as well. Force on submerged and curved is used in the design of sub marine and other hydraulic transport.

lining of canals

Tue, 18 Aug 2015 05:06:06 +0000

types of lining canal

Components parts of diversion head works

Tue, 18 Aug 2015 05:03:28 +0000

Components parts of diversion head works

cross drainage work function

Wed, 05 Aug 2015 05:58:06 +0000

What is the function of cross drainage work

How to design weir?

Wed, 05 Aug 2015 05:52:46 +0000

How to design weir?

what are the purposes of headwork

Wed, 05 Aug 2015 04:47:00 +0000

what are the purposes of headwork

how is hydraulics used in water supply system

Mon, 27 Jul 2015 05:26:31 +0000

how is hydraulics used in water supply system