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3 Most Common Types of Cofferdams

3 Most Common Types of Cofferdams

3 Most Common Types of Cofferdams

Construction building near water poses a number of challenges. Whether you’re building a bridge or constructing an office building, there is a need for reliable water control. Today, the best solution is a cofferdam. Keep your work areas dry and secure with a type of cofferdam that will meet your construction requirements.

Getting rid of water in construction is an ever-present problem on worksites and building projects. That’s the importance of cofferdams. Learn about the 3 most common types being used today. Click To Tweet

Types of Coffer Dams

A coffer-dam can be defined as a structure that holds or guards water away from a work area. By dewatering a worksite, construction crews are able to do use their equipment and materials with better precision. To better understand the capabilities of cofferdams, consider the differences between the three most common types.

  1. Braced Cofferdams
  2. Cellular Cofferdams
  3. Aqua-Barrier Inflatable Cofferdam

1) Braced Cofferdams

Generally used in shallow water levels or bridge pier construction, braced cofferdams are formed from a single wall of sheet piling. Each sheet pile is driven into the water and then braced together. By creating a box around the excavation site, water can be pumped out of the enclosed interior to create a dry site.

2) Cellular Cofferdams

Reserved for circumstances where excavation size precludes the use of cross-excavation bracing, cellular cofferdams are designed with steel sheeting. By forming a watertight wall, each steel sheet pile is filled with clay or sand to provide stability against lateral forces. There are two different types of cellular cofferdams, including the diaphragm and circular type:

  • Diaphragm Type – Consists of circular arcs in the inner and outer sides of the cofferdam. The cell is usually filled with sand or coarse-grained soils to weigh the sheet piles down and secure overall stability.
  • Circular Type – Consists of a set of large diameter circular cells interlocked by smaller arcs placed in-between. Each circular cell is filled independently, providing greater strength against lateral pressures.

3) Aqua-Barrier Water-Inflated Dams

Unlike traditional cofferdams, the Aqua-Barrier is a water-inflated dam. Moreover, it can be used alone or together with other dams to absorb various depths of water. Instead of having to pump the water into another location, Aqua-Barrier innovatively pumps excess water into itself to provide stability. Designed with industry-grade vinyl-coated polyester, each inflatable dam will protect the area to be enclosed with durability.

Pro Tip: Use the AquaBarrier in a variety of construction projects including culverts, boat ramps, pipelines, bridges, and many others.

Reliability for Your Work Area

At the end of the day, finding reliable water control systems is crucial for construction projects to be completed safely and on time. Without a dry site, pouring concrete, driving equipment, or welding materials could become hazardous. If you have a construction project located near a body of water, choose a dewatering solution you can trust.

Connect with our sales associates to design a custom water control system for your next construction job.

Construction Dewatering: A Project Manager’s Basic Checklist

Construction Dewatering: A Project Manager’s Basic Checklist

Managing any construction project can be challenging, but especially when the project needs construction site dewatering. With proper planning and a basic checklist, you can make sure that your construction dewatering project happens successfully. Click To Tweet

Checklist for Construction Dewatering Projects

Before you begin your construction dewatering project, it is imperative you have a solid plan and checklist to help you stay on task, keep workers safe, and ensure that you have all the proper equipment to get the job done. Here are some great tips on what to include in your basic checklist:

Formal Procedure Plan

As mentioned, a solid plan is the first step in a successful dewatering project. This formal procedure plan should include procedure requirements, relevant laws and regulations, as well as the concept design, groundwater monitoring documents, and anything else required for the project.

Risk Assessment

Risk assessment is an important part of the dewatering construction process and should be factored in for every dewatering project. A risk assessment will identify any existing or potential adverse effects to the environment or humans in the area or on the project. Risk identification and analysis is vital to keeping people, animals, and the environment safe.

Training Requirements

With construction dewatering being riskier and involved than a normal construction project, it is necessary to have a proper training plan in place and implemented in order to ensure the safety of those working on the site.

Dewatering Methods & Equipment

There are multiple methods of dewatering and it is best to choose the one that best fits your construction dewatering project. Some of the most commonly used equipment in dewatering are sump pumps and the Aqua-Barrier® inflatable cofferdams. Cofferdams are less time-consuming and expensive than the old-fashioned sandbag method used years ago. An inflatable cofferdam is instrumental in attaining a dry work site and is 3-5 times faster than other methods.

Disposal Options

Along with having a proper plan, a well-trained team, and the best equipment for the job, it is also important to understand which disposal options are available. Make sure to know what regulations require to determine the best disposal route.

Construction Dewatering Done Right

By making and sticking to a solid checklist, your dewatering project can happen without a hitch. Monitoring your plan and staying in communication with all involved will make sure your construction dewatering project is successful and safe for all involved.

To learn more about creating a basic checklist for your next dewatering project, Contact Us.

Cofferdams: 3 Things to Look For in 2018

Cofferdams: 3 Things to Look For in 2018

2018 arrived in much of the Northern United States with record-breaking snowfall and precipitation.  Beyond the obvious hazards of icy and impassable roads, freezing temperatures and dangerous snowdrifts, a secondary crisis could occur as warmer weather approaches and snow begins to melt.

The Secondary Crisis

As such a massive amount of snow melts, the behavior of the water it produces can become erratic.  Gurgling creeks can become rushing rivers, destroying vegetation and structures along the way, resulting in devastating damage and irreparable erosion. To protect the stability of the region, and protection of property, both private residents, and cities alike should consider utilizing cofferdams.

1. Avoid Flood Damage.

To protect your home or business from melting snowfall flooding, an inflatable cofferdam is an economical choice.  In addition to possible structural and sentimental losses, allowing generators and electrical systems to flood can be dangerous and costly as well. Remember that it’s much cheaper to invest in preventative measures, such as cofferdams, than it is to rebuild your home or business!

2. Protect the Environment.

Cofferdams are temporary and do not result in permanent aesthetic or structural damage.  This is great not only for the value of your property but for the well being of the environment around you. Easy to set up and remove, systems like the residential WIPP system (Water Inflated Property Protector)  provide a simple solution to protect what’s yours.

3. Make Repairs.

As a measure to quickly repair property or equipment that may be under floodwaters, a cofferdam can prevent water from returning to the repair site once it’s been pumped out.  Acting as a temporary barrier, it allows workers safe and easy access to the job site and ample time for the area to recover before removal.

Come Prepared in 2018

The weather is unpredictable with far-reaching effects that can linger for a long time.  It’s more important than ever to utilize the tools available to you in the event of a natural disaster.  Looking ahead, the value and importance of inflatable cofferdams and related products in construction will only increase.

Contact Us to learn more about inflatable cofferdams and other dewatering and flood protection solutions.

A Game-Changing Tool for Waterpark Construction & Repair

A Game-Changing Tool for Waterpark Construction & Repair

Waterparks have long been a favorite place for families to relax, unwind, and have fun. The blue water, many slides, and laughter give them a playful, low-key atmosphere that effectively masks their many upkeep and maintenance challenges. You are most likely all too familiar with the difficulties of underwater construction and repairs and the necessity of dewatering. The method you choose to remove and store water in the pool areas can have a significant impact on the time and ease with which you complete the project. Many contractors rely on the Aqua-Barrier® inflatable cofferdam to expedite the construction process while maintaining a fun and safe environment for waterpark guests.

Traditional Methods used to Dewater Pool Areas

  1. Sandbags have long been the go-to dewatering method. While this option will work, the challenges it presents can cost you more time and money. You will need to either prefill the bags and transport them to the site, or fill them with sand onsite. The bags will also have to be manually placed at the site. After all of this, water can still escape through cracks.
  1. Cofferdam with Retention Pool. A traditional cofferdam can also be used with all of the displaced water stored in a retention pool. This method requires time to set up the cofferdam, create the pool, and to move the water. It will necessitate additional funds for tools and supplies.

Waterpark Construction: Using a Water-filled Cofferdam

The Aqua-Barrier® Cofferdam’s water-filled design makes it the perfect solution for waterpark pool area construction projects. Take a look at how it could save you both time and money:

  1. Installation is Fast and Simple

The cofferdam is filled with the very water you need to move so it goes up quickly. The time and effort required to drain water is significantly reduced and there’s no need to move fill material.

  1. Molds to Area with Airtight Seal

Since the Aqua Barrier® is filled with water, it molds to the environment forming an airtight seal. The shape of the pool area and waterpark features that may normally get in the way will not interfere with the Aqua-Barrier® system. This makes it versatile and easy to use in pool areas.

  1. No Need to Drain Entire Pool

image024Aqua-Barrier®, when strategically placed, can be used to section off the portion of the pool you need to work on while leaving the rest available for revenue-generating use. If additional room is needed for water to be stored, use Aqua-Barrier® in conjunction with Insta-Tank® to store water and maximize pool water conservation.

As you can see, the Aqua-Barrier® water inflated cofferdam system has multiple benefits. This is why it has been used in various applications worldwide including Schlitterbahn in Galveston, Texas and Disney World in Orlando, Florida.

Dewater Your Pool Areas with Aqua-Barrier®

Simplify your waterpark construction projects by dewatering pool areas with Aqua-Barrier® inflatable cofferdams. Save time, save money, and improve the bottom line for you and your clients. Contact Us for more information on how a water filled cofferdam can help speed up your waterpark construction or repair projects.

Maintain Water Flow with Aqua-Barrier® Using Diversion Pipes

While a dry worksite is essential for many construction and repair projects, there are many cases where it is not feasible to completely cut off the water flow. In applications that require the water flow of a river or creek to be completely cut off, it may become necessary to maintain water flow using diversion pipes or bypass pumps.

Diversion Examples

Diversion in Telluride, CO

Diversion in Telluride, CO

 

Diversion, Ontario, Canada

Diversion in Ontario Canada

 

The Aqua-Barrier® inflatable cofferdam (with or without diversion) is an efficient dewatering solution for various industries.  For more information contact your Hydrological Solutions, Inc. representative.