What Is Caisson Foundation?

Caisson Foundation

Advantages of Caissons Foundation

1. Excavation and the process of concreting can be done in dry conditions.
2. Caissons are good in the lateral as well as axial loading capacity.
3. Caisson is highly adaptable in different site conditions.
4. Caissons are economical as compared to traditional foundation.
5. Caisson can be inserted at any place.
6. It is strong enough to withstand the moments and loads applied to the structure.
7. Caisson does not require pile caps, because it is filled with concrete.
8. Caissons have a large cross-sectional area which helps to resist the scouring effect.
9. Caissons can be extended up to the large depths in the ground.

Disadvantages of Caisson Foundation

1. The Inspection and cleaning at the bottom of the Caisson are difficult.
2. There is a lack of skilled workers which are required for the construction of the Caisson Foundation.
3. Caissons can not be construed in the contaminated sites.
4. Caissons are required to be constructed under the supervision of the Experts.
5. There may be a risk to the workers to get affected by the caisson diseases. So the proper health control is essential.
6. The limit for the depth of the penetration of the Caisson is up to 35 m.

Application of Caisson Foundation in Civil Engineering

1. It is used in the construction of piers of the bridges in the water bodies.
2. Caisson is also used in the construction of large and Multi-Floor Buildings.
3. Caissons provide a platform for the installation of machineries and pumps below the ground level.
4. Pneumatic Caissons are used in the construction of railway bridges.
5. Caissons are also used to provide access to the shaft and tunnels.

Types of Caisson Foundation

• Open Caisson.
• Box Caisson.
• Pneumatic Caisson.

1. Open Caisson

• Single Wall Open Caisson
• Cylindrical Open Caisson
• Open Caissons with Dredging Wells.

2. Box Caisson

3. Pneumatic Caisson

Construction Method of Caisson Foundation

Prefabrication of Caisson

• Firstly, the caissons are generally prefabricated near the Construction site or at any other suitable location.
• After prefabrication of the Caissons, they are tested for water tightness.
• In the tests, the Caissons are check for any leakages and, if found they are repaired immediately.

Transportation of the Caisson

• Then the Caissons are transported to the required location.
• The transportation of the Caisson should be done by following all precautionary measures.

Positioning and Immersion of Caissons

1. It is very important that Caisson should be properly positioned at the desired place.
2. The final positioning of a caisson is achieved with the help of tug boats or with cables from floating equipment and anchors or dead-man beds.
3. When the caisson is ready, the soil is dug from the work chamber which causes the caisson to subside into the ground.
4. Traditionally the excavation is done by the hand but nowadays sand pumps and other machinery are used for the excavation.
5. The excavated soil is removed with the help of a hydraulic transport system.
6. The Caisson is subsided under its own weight.
7. When the caisson has reached the desired depth, then the work chamber is completely filled with Concrete. This prevents further sinking of the Caisson.

Ballasting

• After the immersion of the Caisson, they are ballasted.
• The main function of the dump of rubble at the side of the caisson is to prevent it to slide away and helps to maintain maximum stability.

What Is Concrete Caisson Foundation?

Caisson Footing

Caisson Foundation

Caisson Construction

Caisson Construction Method

Caisson Structure

Steel Caissons

How Does a Caisson Work?

Caisson Foundation Vs. Other Deep Foundation Methods

Pros and Cons of Using Caisson Foundations

• Caissons are economic.
• It is environment-friendly.
• It is easily adaptable to varying underwater soil conditions.
• Caisson has high horizontal and lateral loading capacity.
• Minimum handling equipment is required for placement of reinforcement cage.

Types of Caisson Foundations for High-Rise Buildings

Advantages of Using Caisson Foundations in Construction

Advantages of Caisson Foundations Vs. Traditional Foundations

Caissons Construction

What Is a Caisson in Construction?

What Are the Types of Caissons That Can Be Used as a Foundation?

• Box Caissons.
• Excavated Caissons.
• Floating Caissons.
• Open Caissons.
• Pneumatic Caissons.
• Compressed Air Caissons.
• Monolithic Caissons.

What Is the Purpose of a Caisson?

Piles and Caissons Are Examples of What Kind of Foundations?

• Pile foundations. A pile foundation consists of a long cylinder created from concrete or another type of strong material. ...
• Drilled shafts. Drilled shafts, sometimes referred to as caissons, are deep foundations that work similarly to pile foundations but offer a higher level of load capacity.

Caisson Sinking Method

Installing Caissons

Caisson Foundation Cost

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