This course will provide information regarding the design of gravity dams and a discussion of its engineering properties. The sardar sarovar dam is a gravity dam on the narmada river near navagam, gujarat, india. Dam is a solid barrier constructed at a suitable location across a river valley to store flowing water. Classification of dams and types of dams on the basis of. An example design of small african journals online. Gravity dam a gravity dam is a structure which is so designed that its own weight resists all the external forces. This type of a structure is most durable and solid and requires very less maintenance. Nov 16, 2014 a gravity dam is a massive sized dam fabricated from concrete or stone masonry. If the density of concrete is 2400 kgm 3 and that of water is kgm 3, determine the maximum compressive stress at section mn if the depth of the water behind the dam is h 15 m. Jan 28, 2014 gravity dams a gravity dam has been defined as a structure which is designed in such a way that its own weight resist the external forces.
Ppt gravity dam mamunur rashid rassel rassel academia. Conventional concrete and roller compacted concrete are both addressed. Gravity dams are designed so that each section of the dam is stable, independent of any other dam section. It is the largest dam and part of the narmada valley project, a large hydraulic engineering project involving the construction of a series of large irrigation and hydroelectric multipurpose dams on the narmada river. By using these materials, the weight of the dam alone is. For structures consisting of a section of concrete gravity dam within an embankment dam, the concrete section will be designed in accordance with this manual. The dam was 6,562 feet 2,000 m in length and held back about 90 million m3 of water. Rcc section to take loadings, thus decrease section. Gravity of the dam material then, dam will be a low gravity dam. An arch gravity dam or arched dam is a dam with the characteristics of both an arch dam and a gravity dam. Pdf multiple step method of design of gravity dam and. Gravity dam is constructed of concrete andor masonry andor laidup stone that relies upon its weight for stability.
What is the major difference between an earthen dam and a. Multiple step method of design of gravity da m and comparison. Tes global ltd is registered in england company no 02017289 with its registered office. It resists the forces exerted upon it mainly due to shear strength of soil. The pressure due to this seepage is commonly called hydrostatic uplift and will reduce the stability of the dam against sliding and against overturning. The section is so proportioned that it resists the various forces acting on it by its own weight. Problem 911 a concrete dam has the profile shown in figure p911. Most of the major dams in the world are built using concrete. Gravity dams are designed so that each section of the dam is stable and independent of any other dam section.
A concrete gravity dam is a massive concrete structure, roughly triangular in shape, and designed so that its weight ensures structural stability against the hydrostatic pressure of the impounded water and other forces that may act on the dam. Gravity dam design a pdh online course for engineers. Gravity dams are designed so that each section of the. Failure of gravity dam occurs due to overturning, sliding, tension and compression.
The romans built their gravity dams in the iberian peninsula region, north africa and in the middle east. A gravity dam is a dam that holds water simply because of its own weight. This cross section eventually evolved into the common triangular cross section design of todays gravity dams. An archgravity dam or arched dam is a dam with the characteristics of both an arch dam and a gravity dam. Dental treatment for faults in foundation of gravity dam zuo dongqi, shen jiayin, zhang yang east china technical university of water resources synopsis the stress analysis for the gravity dam is presented by means of our program epbfm employing a coupling fem and bem technique for elastoplasticity.
Ppt gravity dam powerpoint presentation free to view. The successive zones are designed to meet the requirements of. Pdf design of gravity dam table of contents theogene. Curved gravity dams designed for arch action and other types of concrete gravity dams are not covered in this manual. Component of gravity and earthen dam ppt xpowerpoint. Concrete is most commonly used material to construct a dam. The principal parameter of a gravity dam is the ratio of the thickness of the dam at its base to its height, which depends on the characteristics of the supporting soil or of the rock. This website and its content is subject to our terms and conditions.
Gravity dam definition is a dam so proportioned that it will resist overturning and sliding forces by its own weight. The first version of a modern gravity dam was built between 1765 and 1800 in mexico. Gravity dams a gravity dam has been defined as a structure which is designed in such a way that its own weight resist the external forces. A dam is an impervious high barrier which is constructed across a valley to form a deep storage reservoir. Gravity dams play and important part in controlling water flow to create lakes, hydroelectric power, and water for irrigation among other things. These gravity dams were part of a water supply system. The height of gravity dam, where, f permissible compressive stress of the dam material and sc sp.
Generally, an ebook can be downloaded in five minutes or less. Dental treatment for faults in foundation of gravity dam zuo dongqi, shen jiayin, zhang yang east china technical university of water resources synopsis the stress analysis for the gravity dam is presented by means of our program epbfm employing a coupling fem and bem technique for. The weight of gravity dam will cause a moment opposite to the overturning moment and the friction. A gravity dam is a dam constructed from concrete or stone masonry and designed to hold back water by primarily using the weight of the material alone to resist the horizontal pressure of water pushing against it. Although the weight of dam also helps in resisting the forces, the structural behaviour of earthen dam is entirely different fro. Find powerpoint presentations and slides using the power of, find free presentations research about component of gravity and earthen dam ppt. Dam straight or slightly curved us in plan no arch action. Concrete mass concrete as bulk material in dam section with steeper side slope. Gravity dams are constructed from masonry or concrete. A gravity dam is designed in such a way that it resists all external forces acting on the dam like water pressure, wind pressure, wave pressure, ice pressure, uplift pressure by its own selfweight. A gravity dam is called solid gravity dam when it is a solid mass of concrete or masonry with no hollow spaces inside the dam, except for small drainage.
Find gravity dam stock images in hd and millions of other royaltyfree stock photos, illustrations and vectors in the shutterstock collection. A gravity dam is a massive sized dam fabricated from concrete or stone masonry. Lowlevel outlet is an opening at a low level used to drain or lower the water. Gravity dam article about gravity dam by the free dictionary. Gravity dams are a type of dam which is secured by making it of such a size and shape that it will resist overturning, sliding or crushing at the toe. Ppt conrete gravity dams powerpoint presentation, free. Concrete gravity dam engineering ppt video online download. Ramakrishna mission shilpamandira by tanmoy mustafi 2. Ppt gravity dam powerpoint presentation, free download id. Gravity dam design united states army corps of engineers. A gravity dam is a solid structure, made of concrete or masonry, constructed across a river to create a reservoir on its upstream the section of the gravity dam is approximately triangular in shape, with its apex at its top and maximum width at bottom.
It is a dam that curves upstream in a narrowing curve that directs most of the water pressure against the canyon rock walls, providing the force to compress the dam. Elementary profile of a dam subjected only to external water pressure on upstream side, will be right angled triangle, having zero width at water level and a base width b at bottom, i. Best powerpoint templates download your favorites today. Sd0710 a free powerpoint ppt presentation displayed as a flash slide show on id. The economical design of a gravity dam by this method envisages division of the dam section in various zones fig. Thousands of new, highquality pictures added every day. For the height of dam exceeding h, it is high dam and is designed as follows. The purpose of this manual is to provide technical criteria and guidance for the planning and design of concrete gravity dams for civil works projects. Jan 21, 2018 an earthen dam is made of earth or soil.
Timber dams generally used for temporary purposes such as to divert the water for the construction of main. Archgravity dams are the types of dams that use combined engineering methods of arch dams and gravity dams. Gravity dam definition of gravity dam by merriamwebster. Its suitable in the hilly regions where a deep gorge section is available for the storage reservoir. By using these materials, the weight of the dam alone is able. Gravity dam loads on concrete dams loads can be classified in terms of applicabilityrelative importance as primary loads, secondary loads, and exceptional loads. Multiple step method of design of gravity dam and comparison with cadam software. Height is the vertical dimension from the downstream toe of the dam at its lowest point to the top of the dam. Concrete gravity dams usually run in a straight line across a broad valley and resist the horizontal thrust of the retained water entirely by their own weight. It is meant for serving multipurpose functions such as irrigation.
View and download powerpoint presentations on component of gravity and earthen dam ppt. The presentation describes the timeline, types, dam related terminologies, pros, cons and the environmental effects of dams. Solo survival how to survive alone in the desert sonoran desert part one duration. After that they came to know, the most advantageous cross section for a gravity. A free powerpoint ppt presentation displayed as a flash slide show on id. The tallest existing gravity dam 1970 is 284 m the grande dixence dam in switzerland. Share your knowledge share your word file share your pdf file share your ppt file. That is, the dam is so heavy the all the water in a full reservoir isnt able to push it out of its proper place.
They are designed to hold back large volumes of water. Presentation on gravity dam introduction gravity dam it is a masonry or concrete dam which resists the forces acting on it by its own weight. As solid gravity dams resist the overturning moments due to all external forces such as water pressure, slit pressure etc by its own weight only, these are known. Buttress dam is a gravity dam reinforced by structural supports buttress a support that transmits a force from a roof or wall to another supporting structure these type of dams are concrete or masonry dams which are curved or convex upstream in plan this shape helps to transmit the major part of the water load to the. Later gravity dams used a trapezoidal cross section. Or the arrangement made for systematic control of water flow for better optimum utilization of available water. This manual applies to all hqusace elements, major subordinate commands. Gravity dam free download as powerpoint presentation. Dec 01, 2016 solo survival how to survive alone in the desert sonoran desert part one duration.
Ppt gravity dam powerpoint presentation free to view id. Apr 09, 2017 gravity dam a gravity dam is a dam constructed from concrete or stone masonry and designed to hold back water by primarily utilizing the weight of the material alone to resist the horizontal pressure of water pushing against it. Gravity dam a gravity dam is a dam constructed from concrete or stone masonry and designed to hold back water by primarily utilizing the weight of the material alone to resist the horizontal pressure of water pushing against it. Hydrogeological data five investigation boreholes have been drilled along the proposed axis of the dam to a. The three main forces acting on a gravity dam are the thrust of the water stored. This oversight was only discovered after the dam had experienced significant downstream movement.
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