shivagroupind

multi bussines solution Under One Roof.

multi bussines solution Under One Roof.

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DAM CONSTRUCTION

we specialize in dam construction and repairs on navigational, hydroelectric, diversion, storage, detention, and earthen structures of all sizes.  We work on every part of the dam, both above and below the waterline.  Brennan crews have the experience and equipment necessary to work in a variety of conditions, including confined spaces, elevated work stations, underwater construction, and more.  When most firms pursue dam work as a secondary focus, we have made it a primary focus with dedicated crews, specialized equipment, and a robust safety program.

Dams are massive barriers built across rivers and streams to confine and utilize the flow of water for human purposes. These purposes may be Irrigation, Hydropower, Water-supply, Flood Control, Navigation, Fishing and Recreation. This confinement of water creates lakes or reservoirs. INTRODUCTION REASONS TO BUILD A DAM Dams have two main functions. • The first is to store water to compensate for fluctuations in river flow or in demand for water and energy. • The second to raise the level of the water upstream to enable water to be diverted into a canal or to increase ’hydraulic head’ –– the difference in height between the surface of a reservoir and the river downstream. • The creation of storage and head allow • Dams to generate electricity (hydropower provides nearly a fifth of the world’s electricity) • To supply water for agriculture, industries and households • To control flooding • To assist river navigation by providing regular flows and drowning rapids. • Other reasons for building large dams include reservoir fisheries and leisure activities such as boating.

Dam Construction Mass Pours

Dam construction is no easy task and it requires a contractor that can carry out time sensitive concrete placement in areas of difficult access. At SHIVA GROUP, we work closely with clients, engineers, subcontractors and vendors to carry out critical schedule construction projects. Whether it is a design-build, or design-bid-build, we will create a strong team atmosphere through transparency and a high level of coordination.

To carry out a mass concrete pour on a dam, a contractor must be creative and innovative. Working in difficult access areas and remote locations, crews must have a thorough understanding of the hazardous conditions that surround them. Transportation of the concrete must be done in a way that is safe, while complying with the time limits allowed under strict quality control requirements. Our crews specialize in this, and will effectively coordinate the operations with all those involved.  

Gate and Actuator Installation

Gate replacement and repair is not only a challenging construction project, it is a science. Limited access, varying concrete conditions, hazardous surroundings, and degraded mechanical components are all variables when considering a gate installation. At SHIVA GROUP, we specialize in removing, installing, and even restoring gates of all types, as well as the equipment that operates them. From massive roller gates to small sluice gates, no project is too big or too small. Our approach to planning the work and working the plan will ensure a high quality replacement that will not put undue stress on the structure. We can achieve replacements from a floating marine plant or from land, safely and efficiently. If your structure doesn’t have bulkhead slots, our patented floating bulkhead may be just the ticket! Brennan can also provide millwright and mechanical services to gate control equipment. This includes hoists, chains, trunnion pins and bushings, actuators, and more. Our ability to think creatively has led to several innovative solutions that have provided economic benefits to our clients. We have developed proprietary processes and tools that have increased the effectiveness and safety of our work on gates, actuating equipment, seals, seal heaters, deicing systems, and the surrounding structure.
We work on every kind of gate!
  • Bascule gates
  • Crest gates
  • Headgates
  • Inflatable
  • Lift gates
  • Roller gates
  • Sluice gates
  • Tainter gates
  • Miter gates
  • Wicket gates
Often times concrete repairs are required around the trunnion pins and gate bays.  We can carry out a complete repair of the entire gate structure to make sure you get a tight seal from your gates every time

INTAKES AND HEADWORKS

We work on every part of the dam, and intakes and headworks are no exception. Brennan can implement the construction and replacement of structural steel components. We excel at providing turnkey installations and reliable maintenance to several types of water control structures. Our certified welders and knowledgeable crews have the right equipment to carry out long lasting repairs, as well as install newly fabricated pieces. We understand the importance of each piece and that precision manufacturing, alignment, and placement is required to optimize the operations of the dam. SHIVA GROUP  is also one of the only contractors in the nation that can offer both above and below water solutions which could lead to the elimination of costly cofferdams.

Bulkheads and slots

  • Diversions
  • Fish ladders
  • Flow lines
  • Penstocks
  • Rail systems
  • Screens
  • Service bridges
  • Stop logs and slots
  • Tailraces
  • Trash racks