One of the newest materials in the construction of water structures in recent years is the rubber material that is widely used in the construction of dams or short dams. In rubber dams, the remarkable flexibility of materials against external factors, compatible with the environment, simplicity of design, short time of building, safety and stability of these structures, such dams than rigid, simplicity and ease of use and ultimately reducing operating costs caused has been used in large and small water projects. Due to the limited information in the field of rubber dams, this article provides the possibility of rubber dams introducing, how to design, building and maintaining.
The document provides information about rubber dams, including their construction, operation, maintenance, and applications. Rubber dams are fabric-reinforced rubber structures that can be inflated or deflated to control water levels. They provide better flood and drought control compared to conventional dams at a lower cost. The summary discusses how rubber dams are constructed using a concrete base and anchoring system, how they are inflated and deflated, maintenance procedures, and their growing use in India for irrigation, water supply, and flood control.
This document provides an overview of rubber dams, including their construction, operation, uses, advantages, and future developments. Rubber dams are constructed from reinforced rubber membranes anchored to concrete foundations. They can be inflated or deflated to control water levels and are used for purposes like irrigation, water supply, flood control, and hydroelectric power generation. Advantages include lower costs than conventional dams and better control of water levels. The document discusses site selection, new types of rubber dams, examples of rubber dam projects internationally, and manufacturers. It concludes that rubber dams provide a flexible way to manage water resources.
1) Rubber dams are inflatable structures made of reinforced rubber membranes that are anchored to foundations to temporarily raise upstream water levels.
2) They are constructed using rubberized fabric reinforced with materials like nylon to form durable, flexible membranes.
3) Rubber dams offer benefits over conventional dams like lower costs, easier installation and removal, and better flood and drought management through automatic inflation and deflation.
Rectangular and Circular underground water tank Maliha Mehr
Rectangular and Circular underground water tank comparison.
Brief comparison of properties of rectangular and circular underground water tank.
Mechanical, economical and ease of construction comparison.
The document describes the key components of a gravity dam and their functions. It discusses drainage galleries, which provide access to the dam interior and drainage. Shafts are vertical openings that provide access for equipment and instruments. The overflow section, also called the spillway, releases surplus water from the reservoir in a safe way. The non-overflow section is the rest of the dam where a road may be located. A power house is located at one end to generate electricity. Energy dissipation works reduce the velocity of water flowing over the spillway. Outlets below the spillway release water from the reservoir. Joints are included to aid construction and prevent cracks.
This document discusses different types of earth and rockfill dams. It describes rolled fill dams which are constructed by compacting soil in thin layers. Homogeneous dams consist of a single material throughout while zoned dams have distinct core, shell, and filter zones. Diaphragm dams contain an impervious core like a thin wall. Key elements of earth dam design include the top width, freeboard, slopes, central core, and downstream drainage system.
Geosynthetics are man-made materials made from polymers that are used with soil and rock in civil engineering projects to improve their behavior. There are many types of geosynthetics that each have different properties and uses, including geotextiles, geogrids, geonets, geomembranes, geosynthetic clay liners, geocells, geofoam, and geocomposites. Common applications include roads, embankments, retaining walls, reservoirs, landfills, erosion control, and more. Each type has distinct characteristics that make it suitable for functions like separation, reinforcement, filtration, drainage, and containment.
The document discusses reinforced soil and geosynthetics. It begins with an introduction that defines geosynthetics as manufactured polymer products used in geotechnical engineering works. Soil reinforcement using geosynthetics improves strength through lateral restraint between the geosynthetic and soil, forcing failure planes deeper, and supporting wheel loads. The document then discusses various types of geosynthetics like geotextiles, geogrids, and geomembranes. It provides examples of using geosynthetics for filtration, drainage, separation, and reinforcement of slopes, retaining walls, and embankments. The advantages include easier installation and higher strength compared to traditional methods.
The document provides information about rubber dams, including their construction, operation, maintenance, and applications. Rubber dams are fabric-reinforced rubber structures that can be inflated or deflated to control water levels. They provide better flood and drought control compared to conventional dams at a lower cost. The summary discusses how rubber dams are constructed using a concrete base and anchoring system, how they are inflated and deflated, maintenance procedures, and their growing use in India for irrigation, water supply, and flood control.
This document provides an overview of rubber dams, including their construction, operation, uses, advantages, and future developments. Rubber dams are constructed from reinforced rubber membranes anchored to concrete foundations. They can be inflated or deflated to control water levels and are used for purposes like irrigation, water supply, flood control, and hydroelectric power generation. Advantages include lower costs than conventional dams and better control of water levels. The document discusses site selection, new types of rubber dams, examples of rubber dam projects internationally, and manufacturers. It concludes that rubber dams provide a flexible way to manage water resources.
1) Rubber dams are inflatable structures made of reinforced rubber membranes that are anchored to foundations to temporarily raise upstream water levels.
2) They are constructed using rubberized fabric reinforced with materials like nylon to form durable, flexible membranes.
3) Rubber dams offer benefits over conventional dams like lower costs, easier installation and removal, and better flood and drought management through automatic inflation and deflation.
Rectangular and Circular underground water tank Maliha Mehr
Rectangular and Circular underground water tank comparison.
Brief comparison of properties of rectangular and circular underground water tank.
Mechanical, economical and ease of construction comparison.
The document describes the key components of a gravity dam and their functions. It discusses drainage galleries, which provide access to the dam interior and drainage. Shafts are vertical openings that provide access for equipment and instruments. The overflow section, also called the spillway, releases surplus water from the reservoir in a safe way. The non-overflow section is the rest of the dam where a road may be located. A power house is located at one end to generate electricity. Energy dissipation works reduce the velocity of water flowing over the spillway. Outlets below the spillway release water from the reservoir. Joints are included to aid construction and prevent cracks.
This document discusses different types of earth and rockfill dams. It describes rolled fill dams which are constructed by compacting soil in thin layers. Homogeneous dams consist of a single material throughout while zoned dams have distinct core, shell, and filter zones. Diaphragm dams contain an impervious core like a thin wall. Key elements of earth dam design include the top width, freeboard, slopes, central core, and downstream drainage system.
Geosynthetics are man-made materials made from polymers that are used with soil and rock in civil engineering projects to improve their behavior. There are many types of geosynthetics that each have different properties and uses, including geotextiles, geogrids, geonets, geomembranes, geosynthetic clay liners, geocells, geofoam, and geocomposites. Common applications include roads, embankments, retaining walls, reservoirs, landfills, erosion control, and more. Each type has distinct characteristics that make it suitable for functions like separation, reinforcement, filtration, drainage, and containment.
The document discusses reinforced soil and geosynthetics. It begins with an introduction that defines geosynthetics as manufactured polymer products used in geotechnical engineering works. Soil reinforcement using geosynthetics improves strength through lateral restraint between the geosynthetic and soil, forcing failure planes deeper, and supporting wheel loads. The document then discusses various types of geosynthetics like geotextiles, geogrids, and geomembranes. It provides examples of using geosynthetics for filtration, drainage, separation, and reinforcement of slopes, retaining walls, and embankments. The advantages include easier installation and higher strength compared to traditional methods.
The document summarizes the objectives, methodology, and results of a study analyzing the morphometric characteristics and river training needs of the Venkatapura river watershed in India. The objectives were to understand the river's behavior, protect surrounding areas from flooding, and minimize bank erosion. Tools like ArcGIS and HEC-RAS were used to analyze watershed parameters, model steady flows, and identify critical cross-sections. Key findings included a drainage density and bifurcation ratio indicating a moderate watershed, sinuosity suggesting some meandering, and critical sections found to change course or overtop banks during 100-year flows. Preventive bank protection structures were recommended.
Dams, weirs, barrages, and check dams are common hydraulic structures used to store or divert water. Dams are constructed across rivers to impound water and form reservoirs. The main types of dams include gravity dams, earth dams, rockfill dams, arch dams, and buttress dams. Weirs are barriers that alter river flows and can be used to divert water into canals. Barrages are low-head dams that consist of gates to control water levels for irrigation. Check dams are small temporary or permanent dams built across drainage ditches to settle sediments, pollutants, and recharge groundwater.
Earthen dams are constructed using natural materials like clay, sand, gravel and rock. They are designed based on principles of soil mechanics. There are two main types - homogeneous and zoned. Zoned dams have an impervious core and outer shells. Components include the core, shells, rock toe, pitching, berms and drains. Stability requires the seepage line be within the downstream slope with minimum 2m cover. Common causes of failure are hydraulic (overtopping, erosion), seepage (piping through core or foundations) and structural issues like cracking. Proper design and construction can prevent these failures.
The document discusses submerged floating tunnels (SFTs). SFTs are tube structures made of steel and concrete that float underwater, supported by cables anchored to the seafloor or pontoons at the surface. SFTs are considered for crossing bodies of water that are too deep for conventional bridges or tunnels. They can be constructed using positive or negative buoyancy and their shape is optimized to reduce stresses during installation and operation. SFTs provide advantages over bridges such as allowing crossings in extremely deep water and having minimal environmental impacts.
A submerged floating tunnel, also known as submerged floating tube bridge, suspended tunnel, or Archimedes bridge, is a proposed design for a tunnel that floats in water, supported by its buoyancy. The tube would be placed underwater, deep enough to avoid water traffic and weather, but not so deep that high water pressure needs to be dealt with—usually 20–50 m is sufficient. Cables either anchored to the Earth or to pontoons at the surface would prevent it from floating to the surface or ...
interesting civil engineering topics
civil engineering topics for presentation
seminar topics pdf
best seminar topics for civil engineering
civil seminar topics ppt
civil engineering seminar topics 2019
seminar topics for mechanical engineers
mechanical engineering seminar topics 2018
The presentation illustrates a technique for ground improvement, Grouting. In India, grouting is still not being used very much. In this presentation, I have demonstrated the basic types of grouting, goals of ground improvement and two case studies of grouting.
The document discusses different methods of post-tensioning concrete structures. It describes the Freyssinet system as the first introduced method using steel wires grouped into cables with a helical spring. The Magnel Blaton system stresses wires two at a time using sandwich plates and wedges. The Gifford Udall system uses single wires stressed independently with double-acting jacks and tube or plate anchorages. The Lee McCall system prestresses steel bars using threaded bars tightened with nuts against bearing plates.
Certain Soils don’t permit the construction of specific structures on it. The alternative is to improve the strength of the soil by various methods like:
Mechanical modification
Chemical Modification
Lime stabilization
Geo textile etc.,
The document provides information on sheet pile structures and cantilever sheet pile walls. It discusses the different types of sheet piles that can be used, including timber, concrete, and steel. It then describes cantilever sheet pile walls and how to analyze them in both granular and cohesive soils. The analysis involves determining the depth of embedment, bending moment, and section modulus of the sheet piles. Finally, it briefly mentions that anchored sheet piles are held in place using anchors and are either free-earth support or fixed-earth support systems.
This document provides an overview of self-compacting concrete (SCC), including its materials, properties, tests, mix design, applications, and conclusions. SCC is defined as concrete that can flow and fill formwork without vibration due to its high deformability and passing ability. Key points include that SCC uses superplasticizers and viscosity modifying agents, has good filling and passing abilities, and sees applications in reinforced structures like bridges and tall buildings where concrete placement is difficult. The document concludes that SCC can save time and costs while enhancing quality and durability for construction.
Application of Geocell in Geotechnical EngineeringRonak Jain
This document summarizes the applications of geocell in geotechnical engineering. Geocells are 3D honeycombed structures made of polymeric materials that form a confinement system when filled with compacted soil. Some key applications of geocells include erosion control, ground stabilization, retaining walls, slope protection, reservoirs, and improving bearing capacity. Geocells provide advantages such as protection for impervious liners and accommodation of subgrade movement without loss of integrity. A case study demonstrated how geocells were used successfully to build an access road over weak soils near a waste disposal site.
1. Dams are constructed across rivers to store flowing water and come in various types like earth, rockfill, gravity, steel, timber and arch dams. The selection of dam type depends on site conditions like topography, geology and availability of construction materials.
2. Gravity dams derive their strength from their weight and weight of water pressure pushing them into the ground. They are made of concrete or masonry and work by balancing the water pressure on upstream side with weight and pressure on downstream side.
3. Factors considered in gravity dam design include water pressure, seismic forces, uplift pressure, weight of dam, and ensuring stability against sliding, overturning and cracking. Galleries are provided for drainage,
Spillways are structures constructed near dams to safely discharge surplus water from reservoirs. There are several types of spillways classified by their utility and prominent features. Main spillways are designed to pass the entire design flood volume, while auxiliary spillways supplement the main spillway. Emergency spillways activate only during emergencies. Common spillway types include overflow, which guides water smoothly over a curved crest; side channel, which diverts flow through a parallel channel; and tunnel, which conveys flow through a closed channel around the dam. Shaft spillways similarly direct water vertically then horizontally through a tunnel.
Introduction & under ground water tank problemdhineshkumar002
The document discusses the design of an underground rectangular reinforced concrete water tank. It provides steps for calculating earth pressure, determining member thicknesses, and designing reinforcement for the long walls, short walls, and roof slab. The long walls are designed as vertical cantilevers and the short walls as continuous slabs. Reinforcement is checked for bending and cracking stresses. The example shows calculating load intensities, bending moments, required depths and areas of steel for the tank walls and slab according to code specifications.
Design of overhead RCC rectangular water tankShoaib Wani
1) The document presents the design of a rectangular overhead water tank using reinforced concrete.
2) Rectangular tanks are used for smaller storage capacities, while circular tanks are used for larger capacities.
3) The designed RCC rectangular tank presented can store up to 240,000 liters of water.
4) Both theoretical design calculations and STAAD Pro modeling were used to analyze and design the tank.
Topics:
1. Types of Gravity Dam
2. Forces Acting on a Gravity Dam
3. Causes of failure of Gravity Dam
4. Elementary Profile of Gravity Dam
5. Practical Profile of Gravity Dam
6. Limiting height of Gravity Dam
7. Drainage and Inspection Galleries
The document discusses pervious cement concrete pavement, which is designed to allow stormwater to infiltrate rather than run off. It can absorb 36,000 mm of water per hour through its porous structure. Pervious pavement is mostly used for low-traffic areas like sidewalks, driveways, and parking lots. The document outlines the materials, properties, design considerations, construction process, maintenance needs, and environmental benefits of pervious cement concrete pavement.
Rubber dams are simple hydraulic structures made of fabric-reinforced rubber bags that are inflated with air or water. They are effective for conserving water in small and medium rivers. Construction and installation of rubber dams is quicker and cheaper than conventional regulating structures. The rubber bags are anchored to concrete floors and can be inflated to adjust water levels. Rubber dams allow for flexible water management and irrigation supply while being more cost-effective than other dam types. Regular inspections are needed to monitor the rubber dam's integrity and equipment.
Machine Routing And Channel Design AssignmentBHAGCHAND MEENA
The document discusses three types of flood routing: mechanical, electric analog, and digital. Mechanical routers include the integrating flood router which uses five drum charts to plot input and output hydrographs. The rolling flood router uses an undercarriage to move over an inflow hydrograph. Electric analog routers make analogies between hydrologic variables and electric circuits. Digital computers simplify routing with programs that can quickly compute outflows. The document also discusses various canal lining materials including cement concrete, shotcrete, soil cement, asphaltic concrete, brick, earth, and bentonite. It provides details on their composition and suitable applications. Finally, it presents a design problem to calculate dimensions for a triangular concrete-lined channel given discharge, slope
The document summarizes the objectives, methodology, and results of a study analyzing the morphometric characteristics and river training needs of the Venkatapura river watershed in India. The objectives were to understand the river's behavior, protect surrounding areas from flooding, and minimize bank erosion. Tools like ArcGIS and HEC-RAS were used to analyze watershed parameters, model steady flows, and identify critical cross-sections. Key findings included a drainage density and bifurcation ratio indicating a moderate watershed, sinuosity suggesting some meandering, and critical sections found to change course or overtop banks during 100-year flows. Preventive bank protection structures were recommended.
Dams, weirs, barrages, and check dams are common hydraulic structures used to store or divert water. Dams are constructed across rivers to impound water and form reservoirs. The main types of dams include gravity dams, earth dams, rockfill dams, arch dams, and buttress dams. Weirs are barriers that alter river flows and can be used to divert water into canals. Barrages are low-head dams that consist of gates to control water levels for irrigation. Check dams are small temporary or permanent dams built across drainage ditches to settle sediments, pollutants, and recharge groundwater.
Earthen dams are constructed using natural materials like clay, sand, gravel and rock. They are designed based on principles of soil mechanics. There are two main types - homogeneous and zoned. Zoned dams have an impervious core and outer shells. Components include the core, shells, rock toe, pitching, berms and drains. Stability requires the seepage line be within the downstream slope with minimum 2m cover. Common causes of failure are hydraulic (overtopping, erosion), seepage (piping through core or foundations) and structural issues like cracking. Proper design and construction can prevent these failures.
The document discusses submerged floating tunnels (SFTs). SFTs are tube structures made of steel and concrete that float underwater, supported by cables anchored to the seafloor or pontoons at the surface. SFTs are considered for crossing bodies of water that are too deep for conventional bridges or tunnels. They can be constructed using positive or negative buoyancy and their shape is optimized to reduce stresses during installation and operation. SFTs provide advantages over bridges such as allowing crossings in extremely deep water and having minimal environmental impacts.
A submerged floating tunnel, also known as submerged floating tube bridge, suspended tunnel, or Archimedes bridge, is a proposed design for a tunnel that floats in water, supported by its buoyancy. The tube would be placed underwater, deep enough to avoid water traffic and weather, but not so deep that high water pressure needs to be dealt with—usually 20–50 m is sufficient. Cables either anchored to the Earth or to pontoons at the surface would prevent it from floating to the surface or ...
interesting civil engineering topics
civil engineering topics for presentation
seminar topics pdf
best seminar topics for civil engineering
civil seminar topics ppt
civil engineering seminar topics 2019
seminar topics for mechanical engineers
mechanical engineering seminar topics 2018
The presentation illustrates a technique for ground improvement, Grouting. In India, grouting is still not being used very much. In this presentation, I have demonstrated the basic types of grouting, goals of ground improvement and two case studies of grouting.
The document discusses different methods of post-tensioning concrete structures. It describes the Freyssinet system as the first introduced method using steel wires grouped into cables with a helical spring. The Magnel Blaton system stresses wires two at a time using sandwich plates and wedges. The Gifford Udall system uses single wires stressed independently with double-acting jacks and tube or plate anchorages. The Lee McCall system prestresses steel bars using threaded bars tightened with nuts against bearing plates.
Certain Soils don’t permit the construction of specific structures on it. The alternative is to improve the strength of the soil by various methods like:
Mechanical modification
Chemical Modification
Lime stabilization
Geo textile etc.,
The document provides information on sheet pile structures and cantilever sheet pile walls. It discusses the different types of sheet piles that can be used, including timber, concrete, and steel. It then describes cantilever sheet pile walls and how to analyze them in both granular and cohesive soils. The analysis involves determining the depth of embedment, bending moment, and section modulus of the sheet piles. Finally, it briefly mentions that anchored sheet piles are held in place using anchors and are either free-earth support or fixed-earth support systems.
This document provides an overview of self-compacting concrete (SCC), including its materials, properties, tests, mix design, applications, and conclusions. SCC is defined as concrete that can flow and fill formwork without vibration due to its high deformability and passing ability. Key points include that SCC uses superplasticizers and viscosity modifying agents, has good filling and passing abilities, and sees applications in reinforced structures like bridges and tall buildings where concrete placement is difficult. The document concludes that SCC can save time and costs while enhancing quality and durability for construction.
Application of Geocell in Geotechnical EngineeringRonak Jain
This document summarizes the applications of geocell in geotechnical engineering. Geocells are 3D honeycombed structures made of polymeric materials that form a confinement system when filled with compacted soil. Some key applications of geocells include erosion control, ground stabilization, retaining walls, slope protection, reservoirs, and improving bearing capacity. Geocells provide advantages such as protection for impervious liners and accommodation of subgrade movement without loss of integrity. A case study demonstrated how geocells were used successfully to build an access road over weak soils near a waste disposal site.
1. Dams are constructed across rivers to store flowing water and come in various types like earth, rockfill, gravity, steel, timber and arch dams. The selection of dam type depends on site conditions like topography, geology and availability of construction materials.
2. Gravity dams derive their strength from their weight and weight of water pressure pushing them into the ground. They are made of concrete or masonry and work by balancing the water pressure on upstream side with weight and pressure on downstream side.
3. Factors considered in gravity dam design include water pressure, seismic forces, uplift pressure, weight of dam, and ensuring stability against sliding, overturning and cracking. Galleries are provided for drainage,
Spillways are structures constructed near dams to safely discharge surplus water from reservoirs. There are several types of spillways classified by their utility and prominent features. Main spillways are designed to pass the entire design flood volume, while auxiliary spillways supplement the main spillway. Emergency spillways activate only during emergencies. Common spillway types include overflow, which guides water smoothly over a curved crest; side channel, which diverts flow through a parallel channel; and tunnel, which conveys flow through a closed channel around the dam. Shaft spillways similarly direct water vertically then horizontally through a tunnel.
Introduction & under ground water tank problemdhineshkumar002
The document discusses the design of an underground rectangular reinforced concrete water tank. It provides steps for calculating earth pressure, determining member thicknesses, and designing reinforcement for the long walls, short walls, and roof slab. The long walls are designed as vertical cantilevers and the short walls as continuous slabs. Reinforcement is checked for bending and cracking stresses. The example shows calculating load intensities, bending moments, required depths and areas of steel for the tank walls and slab according to code specifications.
Design of overhead RCC rectangular water tankShoaib Wani
1) The document presents the design of a rectangular overhead water tank using reinforced concrete.
2) Rectangular tanks are used for smaller storage capacities, while circular tanks are used for larger capacities.
3) The designed RCC rectangular tank presented can store up to 240,000 liters of water.
4) Both theoretical design calculations and STAAD Pro modeling were used to analyze and design the tank.
Topics:
1. Types of Gravity Dam
2. Forces Acting on a Gravity Dam
3. Causes of failure of Gravity Dam
4. Elementary Profile of Gravity Dam
5. Practical Profile of Gravity Dam
6. Limiting height of Gravity Dam
7. Drainage and Inspection Galleries
The document discusses pervious cement concrete pavement, which is designed to allow stormwater to infiltrate rather than run off. It can absorb 36,000 mm of water per hour through its porous structure. Pervious pavement is mostly used for low-traffic areas like sidewalks, driveways, and parking lots. The document outlines the materials, properties, design considerations, construction process, maintenance needs, and environmental benefits of pervious cement concrete pavement.
Rubber dams are simple hydraulic structures made of fabric-reinforced rubber bags that are inflated with air or water. They are effective for conserving water in small and medium rivers. Construction and installation of rubber dams is quicker and cheaper than conventional regulating structures. The rubber bags are anchored to concrete floors and can be inflated to adjust water levels. Rubber dams allow for flexible water management and irrigation supply while being more cost-effective than other dam types. Regular inspections are needed to monitor the rubber dam's integrity and equipment.
Machine Routing And Channel Design AssignmentBHAGCHAND MEENA
The document discusses three types of flood routing: mechanical, electric analog, and digital. Mechanical routers include the integrating flood router which uses five drum charts to plot input and output hydrographs. The rolling flood router uses an undercarriage to move over an inflow hydrograph. Electric analog routers make analogies between hydrologic variables and electric circuits. Digital computers simplify routing with programs that can quickly compute outflows. The document also discusses various canal lining materials including cement concrete, shotcrete, soil cement, asphaltic concrete, brick, earth, and bentonite. It provides details on their composition and suitable applications. Finally, it presents a design problem to calculate dimensions for a triangular concrete-lined channel given discharge, slope
TREMIX;
Special concrete floor surface harden by admixtures and dewatering used in industrial facilities
DEWATERING ;
Dewatering is the removal of water from solid material by wet classification and filtration or similar solid liquid separation
prepared by Hebin J Chiriyankandath
Jyothi Engineering College Thrissur Kerala India
seminar topic for civil engineering students
This document discusses efficient use of rain water by altering road drainage systems. It describes how stagnant rain water on roads can degrade surfaces and cause potholes. The document proposes collecting stagnant water and modernizing drainage systems. It explains how altering road slopes and materials used can help drain water more effectively and recharge groundwater tables. The document also discusses drainage system types, how potholes form, methods for repairing potholes, and the importance of proper road slopes for drainage.
Efficient Use of Rain Water by Altering Channel Systemtheijes
The International Journal of Engineering & Science is aimed at providing a platform for researchers, engineers, scientists, or educators to publish their original research results, to exchange new ideas, to disseminate information in innovative designs, engineering experiences and technological skills. It is also the Journal's objective to promote engineering and technology education. All papers submitted to the Journal will be blind peer-reviewed. Only original articles will be published.
This document summarizes a research paper that proposes an efficient way to collect and use storm water runoff from roads by altering the channel system beneath the road surface. The system involves digging channels underneath the road, lining them with cement, and covering them with perforated stones to allow water to flow through while still supporting vehicle loads. This would prevent water stagnation on roads, reduce pothole formation, and help meet water demands, while only requiring higher initial construction costs. Collecting storm water in this way could have benefits like lessening water scarcity, improving traffic flow, and controlling diseases spread by standing water.
"This brand new Powerpoint Presentation details the types, benefits, and applications of the Smith Drainage Systems Trench Drains. This overview of the product line is an excellent resource tool for anyone interested in our trench drains."
This document proposes an alternative design for constructing the foundations of a new pedestrian bridge across a harbour. It suggests using a temporary sheet pile wall cofferdam that would allow workers to build the pile group and pile cap at the riverbed level, avoiding the need for divers. The cofferdam design is sized at 10x10m and embedded 10m deep. Calculations are presented to check for piping, heaving, and structural failure. A finite element model is also used. It is determined that drains will be needed to reduce water pressures and piping risks. The design of the internal bracing structure and construction sequence are also considered. The cofferdam is concluded to be a feasible alternative construction method for the bridge
Vacuum dewatering is a process that removes excess water from freshly poured concrete to achieve an ideal water-cement ratio and improved properties. Concrete is poured and a vacuum pump then removes 15-25% of the water through a suction mat and filter pads. This results in higher strength, less cracking and shrinkage, improved abrasion resistance, and a smooth, level surface. Vacuum dewatering is commonly used for industrial and commercial floors that require high durability.
This document provides an overview of rainwater harvesting including its benefits and components. It discusses how rainwater harvesting systems typically include a catchment area, conveyance system to move water from the catchment to storage, a storage facility, and a delivery system. Key factors in selecting a technology include rainfall levels, costs, and alternative water sources. Benefits include providing a free water source and reducing stormwater runoff. Regular maintenance is required to ensure water quality is not compromised. The feasibility depends on rainfall levels and storage capacity.
Jay R. Smith Mfg. Co. offers a full line of trench drain products covering a broad scope of manufacturing, processing, commercial, industrial and residential applications. The Enviro-Flo® Trench Drain Series, Figure Numbers 9930 and 9931, is made from 100% polypropylene, making it light weight, durable and easy to install. The Enviro-Flo® system can consist of 15 sloped and 15 neutral channels for any configuration. The Smith/ACO Trench Drain Series, Figure Numbers 9810 through 9860, is made from precast polymer concrete and fiberglass. The Smith/ACO system is sloped with a radiused bottom. The smooth, uniform interior of these channels offers maximum hydraulic performance. Jay R. Smith Mfg. Co. Drainage Systems includes a wide variety of grate types and materials to meet all installation requirements.
For more information, please visit www.jrsmith.com
IRJET- A Proposed Design of Semi Automatic Cleaning System for High Power...IRJET Journal
This document describes a proposed design for a semi-automatic cleaning system for high power transmission line insulators. It begins with an introduction to insulators and why cleaning is important. It then discusses existing manual and automated cleaning methods and their limitations. The proposed design is then described in detail, including the main components of a base gripper, lead screw, washer base with microfiber rollers, and how it would function to clean cup and pin type insulators located less than 20 meters high in an efficient, cost-effective manner using dry cleaning. Calculations are provided to analyze the design and simulations were conducted to test load conditions. The conclusion is that the new system aims to prevent insulator failures caused by pollution in a safer
The document discusses techniques for underwater construction, including caissons, cofferdams, and different methods for placing concrete underwater. Caissons and cofferdams are the two main techniques used to create a dry work environment for underwater construction. Caissons are permanent watertight structures used for foundations, while cofferdams are temporary structures built with sheet piling. Common methods for placing concrete underwater include the tremie method, pump method, toggle bags, and bagwork. The tremie method is the standard for major structures due to reliability in placing high-quality concrete.
EJ Roe and Michael Watson-Deep Sea Soil CollectorEvan (E.J.) Roe
The document presents the engineering design process for a Deep Sea Soil Collector. Six initial design concepts were evaluated and Design E, involving a U-shaped pipe with a vacuum and dual scoopers, was selected. Prototyping revealed issues with the scoopers, leading to an optimized design using a straight pipe with a balloon and olive oil to create a vacuum. Finite element analysis was conducted to test the design's ability to withstand ocean pressures and impacts. The optimized mechanical design aims to collect soil samples from the ocean floor without power for research purposes.
This document discusses construction methods for tunnels and hydraulic structures. For tunnels, it lists various construction methods including cut-and-cover, boring machines, drill and blast, and others. It then discusses the New Austrian Tunneling Method and pipe jacking/microtunneling in more detail. For hydraulic structures, it outlines classifications based on function and then explains the construction methods for earth dams, aqueducts, and sluice gates in detail. Key steps for earth dam construction include site preparation, spillway design, and compacting soil layers to increase stability.
IRJET - Application of Water Conservation Technique to Low Income Group H...IRJET Journal
The document discusses the design and implementation of a rainwater harvesting system for low income group housing in Nagpur, India to help address water shortage issues. It presents the methodology, components, and sizing considerations for an effective rainwater harvesting system. A case study is provided that demonstrates how such a system was implemented for a housing project, reducing the demand on potable water by 44,00,000 liters and requiring only an additional 6.2% of the total project cost.
Traps and manhole aditya kumar barn1 ar14002Aditya kumar
Traps are fittings used to prevent foul gases from entering buildings through soil or waste pipes. Traps retain a small amount of water that forms a seal against gas passage. They are usually P-shaped and must be self-cleaning to allow waste to pass through while maintaining the water seal. Manholes provide access for maintenance of underground utility lines like sewers. They have protective covers and steps within to access the underground space safely. Proper installation and design of manholes and their supports is needed to prevent structural failures over time.
Conduits,intakes,power house and AccessoriesYimam Alemu
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Rubber dam
1. RUBBER DAM
GUIDE
SANKARANARAYANAN K M.
ASST. PROFESSOR
DEPT. OF CIVIL ENGINEERING
PRESENTED BY
ZEETH K V
ROLL NO: 7
S1 M.TECH SE
DEPT. OF CIVIL ENGINEERING
2. Contents
What is rubber dam
Selection of a Rubber dam site
Construction of Rubber dam
Operation mechanism(Automatic control mechanism)
Types of damages and repairing techniques
Analysis
New types of rubber dams
Rubber Dam Applications
Future plan of work in India
2
3. Why Rubber Dam ?
Better control of flood and draught.
Increase of per capita water storage capacity and
water use efficiency
Easy installation
Lower investment cost ( about 40%) than the
conventional gated regulating structure
Ground re-charging
Other purposes: irrigation, water supply, power
generation, tidal barrier ,environmental
improvement.
India’s per capita water storage
3
4. What is rubber dam?
Basically rubber dams are fabric reinforced rubber bags, which can be inflated
or deflated by water or air. The fabric gives the necessary strength where as
rubber acts as a shock absorber and water proofing material.
It function as a reliable crest-adjustable water gate.
Construction of Rubber dam
1. Concrete base slab & side walls
2. Anchorage
3. Dam bag /Membrane
4. Water or air filling & draining system/Control system
4
5. Selection of a suitable dam site:
In the site selection following conditions
should be considered:
Straight section
Smooth Flow
Riverbed and Bank slopes are stable.
Geological
Hydrologic
Meteorological
hydraulic conditions
It is better to carry out the construction of civil
works related to the rubber dam in a dry season
5
6. Rubber dam section:
Rubber dam
Anchoring
Concrete structure
This figure shows how rubber body is secured to a concrete foundation by
its anchor line.
6
7. Construction of Rubber dam:
Concrete Base Slab:
Concrete slab is provided as a base for rubber construction.
The side walls of the dam should be vertical or inclined
7
8. 8Anchorage:
Dams are secured to the concrete foundations using a single or dual core clamping
plates
Plates are clamped to the membrane using anchor bolts
9. 9
Use single anchor in Air-filled rubber
dam to avoid the contact between base
slab and filled air
Use double anchors in Water-filled
rubber dam to handle the additional
pressure and weight of filled water
10. Dam bag /Membrane:
The rubber dam body is a membrane of rubberized fabric, which is composed of layers of
synthetic rubber and layers of synthetic fiber reinforcement that are firmly bonded
together by vulcanization.
Physical-mechanical properties of the dam membrane are given by
1. tensile strength
2. elasticity and flexibility
3. ozone-resistance
4. abrasion-resistance
5. weather-resistance
6. specific life strength
7. high-temperature and low-temperature resistance
10
11. Operation mechanisms:
Inflation:
An air blower or water pump and
ancillary devices such as valves are used
to inflate the air or water filled dam
respectively.
Deflation:
There are three types of deflation
systems: bucket, float, and electrical.
Safety systems:
An air blow-off tank(air-filled dam)
and siphon pipe(water-filled dam)
can be used as a safety device in case
principal deflation mechanism fails
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12. Inflation Procedure
Inspect the upstream side, ensuring that neither people nor property will be
adversely affected by raising the upstream water level.
Remove debris (especially sharp objects) adjacent to the rubber dam
Close the air exhaust valve.
Open the air supply valve
Start the air compressor.
Monitor the air pressure gauge while inflating the dam
12
13. 13Deflation Procedure
Inspect the downstream side, ensuring that neither people nor property will
be adversely affected by raising the downstream water level
Make sure the downstream side of the dam foundation is free of sharp
objects and other obstructions that may damage the dam body during
deflation
Open the drainpipe to drain the condensed water
Open the air exhaust valve to deflate the dam.
14. 14Inflation/Deflation time
The inner volume of the dam body
The external pressure acting on the dam
body
The capacity of the air compressor or water
pump.
15. Automatic control mechanism:
A pressure sensor is used to
monitor the inner pressure of the
dam body.
The inlet of air/water to the dam
body is cut off automatically
when inner pressure reaches the
preset level.
A laser height measuring device
can be installed inside the dam
body.
A sensor monitors water level.
The exhaust valve is opened
automatically as deflation level is
reached.
15
16. Inflation and deflation of a rubber Dam:
Bridgestone Inflatable /Deflated Dam on Susquehanna River at Sunbury,
Pennsylvania
16
18. Characteristics:
Water filled rubber dam:
Advantages
The weight of the water-filled dam prevents vibrations.
The entire height of the dam rises or lowers evenly.
Weaknesses
More expensive construction: a wider concrete sill, more expensive water
pumps, more expensive pipelines due to a bigger diameter of pipes.
Manipulation takes more time (filling up and emptying the weir).
Freezing of the weir (the possibility of water freezing in the system).
18
19. Air filled rubber dam:
Advantages
Faster lowering and raising of the weir.
Cheaper construction.
Lower power consumption.
Weaknesses
Vibrations of the weir.
Uneven emptying of the weir (sinking of the Centre of the weir).
Vandalism (puncturing, cutting).
19
20. Reducing vibration and abrasion:
Fin structure
Semi-circle shape
Double-line anchoring
Hose Spacers
20
Measures to reduce vibration
21. 21Types of damages and repairing technique
Remove the object that causes the puncture
from the dam body
Insert sealing plug into the puncture hole.
Test for air leakage by spreading soapy
water over the repaired area. The repair is
successful if no bubbles appear
Cut off the end of the sealing plug.
Small Puncture (Bullet hole)
22. 22
Surface Damage
Cut off the outer surface of the damaged area.
Fill self-vulcanizing rubber into the damaged area after cleaning and
drying.
Smooth outer surface by removing protruding rubber materials.
23. 23Small-Area Damage
Cut off the outer rubber
around the damaged area at
approximately 45°.
Buff the cut surface, then
clean and dry it.
Apply cement two times to the cut surface, the second coat applied after the
first coat has dried.
Apply cement to a piece or several pieces of filler rubber and then patch the
filler rubber onto the cut surface after the cement has dried.
Apply cement to a piece of reinforced fabric and patch it onto the filler
rubber after the cement dries.
24. 24Large-Area Damage
Patch the inner side of the damaged area
with a piece of reinforced fabric.
Follow Small-Area damage
repairing technique
27. Use of a rubber dam in Hydro Power Plant:
Power of a hydroelectric power plant depends also on the speed of the
river and that the power expressed in percentage increases more at the
rivers where the fall is smaller.
The percentage of the increase of the power is calculated in the following
way:
%P = the percentage of the increase of power in a hydroelectric plant
h2 = the height of the increase of the fall in a hydroelectric power plant
h1 = the initial height of the fall in a hydroelectric power plant
27
28. Rubber Dams:
Tin Shui Wai Rubber Dam Hong Kong Rubber weirs at the river Sava in Kranj
Janjhavathi Rubber Dam (India)
irrigates 24,000 acres
28
SAVATECH
29. New types of rubber dams:
Rubber dam with inspection gallery: Some large dams of Bridgestone and
Sumitomo have an inspection gallery . An access door and air-lock system are
provided to allow entry into the dam when its in the inflated mode.
Rubber dams with different deflation modes: New types can deflate in both
the upstream and downstream directions according to the direction of flow or
deflate directly onto the foundation.
Innovative fish-way: The rubber dam can be incorporated into a fish-way.
29
30. Rubber dam: New hope for farmers?
Impact of Rubber Dam on crop
productivity of summer vegetables at
Baghamari,Orissa.
S.NO. Productivity(t/ha)
Before
Installation
of Rubber
Dam(2009)
After
installation of
Rubber Dam
(2010 )
1. 2.873 4.67
30
NATIONAL AGRICULTURAL INNOVATION PROJECT Click here for
31. Rubber Dam Applications:
HYDRO POWER Project: Rainbow Dam
Country: USA Size: 3.66Hx67.7L
WATER SUPPLY Project : Gubeng Dam
Country : Indonesia Size : 2.85Hx12.0L
GROUND RECHARGING Project : Alameda
Country : USA Size : 3.96Hx88.8L TIDAL BARRIER Project : Naruse River
Country : Japan Size : 2.3Hx42.1L
31
32. Rubber Dam Applications
Purpose Dam/Project Name Country Height (m) Width (m)
Groundwater recharge Sonoma Dam USA 3.3 36.9
Hydropower Glenford dam Canada 1.7 74.7
Irrigation Lamchi Muang Ling Dam Thailand 4 73
Increasing reservoir
capacity
Mirani Weir Australia 1.8 107.3
Navigation Tsudae Dam Japan 1.5 20
Recreation Shin Chon Dam Korea 1.5 50.65
Rehabilitation Vaca Dam Philippines 2.0 13.3
Drinking water Altoona Dam USA 1.53 35.7
Flow control (sewerage) Ichioka Sewerage Plant Japan 1.1 6.5
Flood control Shing Chu River Dam
Taiwan,
China
1.6 8
Tidal barrier Naruse River Japan 2.3 42.1
32
33. Future plan of work in India:
Gujarat's first rubber dam to be built over Tapi at Rundh. Source: The times of India, Surat.
Expert team inspects site for rubber dam in Pampa River. Source: The Hindu Kerala.
First rubber dam in India is being built in Andhra Pradesh, over the Janjhavathi river in
Vizianagaram district.
SEVERAL STATES including Jharkhand and West Bengal, have shown interest in
rubber dams. Jharkhand Water Resources Department officials said that they have
approached Hydroconstruct to build a dam. Source: Tehelka.com
Installation and evaluation of Rubber Dams at various watersheds at Bhubaneshwar,
Orissa.
The steel industrial kerala limited a public sector company, has entered into an
agreement with an australian firm(hydro construct) for the construction of rubber dams in
kerala. Source: The times of India, Thiruvananthapuram.
33
35. References:
P. Roy Choudhury, S. K. Chakraborty, Manasi Nath, “Rubber Dam a novel
approach for control of water flow in watershed management for agricultural
growth of India” published in Rubber India, vol LX, No 8, pg 49, August 2008
http://www.hydroconstruct.at/
Bridgestone Corporation. 1997. Rubber dam: inflatable rubber weir. Tokyo,
Japan.
P. Roy Choudhury, Manasi Nath, Bhagabat Bhuyan “ Design and
Development of Rubber Dam – a farmer friendly Rubber reservoir”, published in
Rubber Chem Review, vol XXXVII No 6, pg 29, July- August 2008.
X Q Zhang, P W.M Tam, W Zheng ,Construction, operation and maintenance of
rubber dams , Canadian Journal of Civil Engineering Volume 29, Number 3, June
2002.
Karl-Heinz John, Michael Tiegelkamp, IEC 61131-3:Programming Industrial
Automation Systems, Springer.
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