Bored pile casing is very important in construction today. It keeps holes stable and makes foundations stronger, especially in tricky soil. This method stops soil from falling and helps build deep rods step by step. Engineers sometimes leave casing pipes underground to stop soil from moving during earthquakes. These benefits make it a must-have for strong and safe foundations.

Key Takeaways

• Bored pile casing keeps holes stable and makes foundations stronger.
• Picking the right casing, like single or double wall, is important.
• The choice depends on soil type and how big the project is.
• Good materials and proper standards make construction safe and effective.
• Bored pile casing reduces vibrations, so it's great for cities or delicate areas.
• Tools like connectors and adaptors help make installation faster and better.

What Is Bored Pile Casing

What Is Bored Pile Casing Used For?

Bored pile casing is very important in construction today. It keeps holes stable while building strong foundations. It stops soil from falling and keeps the hole's shape. This is especially helpful in tough soil conditions. Engineers use it to move building weight to deeper, stronger soil. This reduces sinking and makes structures more stable.

Bored pile casing helps build heavy things like bridges and tall buildings. It works well in tricky soil, making it great for deep foundations.

Here’s a simple look at its purpose:

Key Features and Benefits

Bored pile casing has many benefits that make it very useful.

• Minimal Vibration: It causes little shaking, so it’s safe near buildings.
• Soil Compatibility: Works well in sticky soils with low water levels.
• Enhanced Performance: Types like CFA and SFA improve work in special cases.

1. Bored piles go deep into strong soil, holding up heavy buildings.
2. They cause little ground shaking, keeping nearby areas safe.

These features make bored pile casing great for cities and sensitive places.

Applications in Modern Construction

Bored pile casing is used in many building projects. It’s perfect for cities where shaking must be controlled. Engineers use it for bridges, tall buildings, and factories.

In tough soil areas, bored pile casing keeps foundations strong. It helps work safely and reliably.

It also helps in flood zones by holding up against water pressure. Its flexibility makes it key in modern engineering.

Classification of Bored Pile Casing

Single Wall vs. Double Wall Casing

There are two main types of bored pile casing: single wall and double wall. Each type is used for different construction needs.

• Single Wall Casing: This has one layer of material. It is light and simple to use.  It is usually for permanent use, which is mostly used in the soft condition and the pile doesn’t have to be too deep.
• Double Wall Casing: Double wall casing with two layers is for temporary use, which is designed especially for transmitting high rotational and vertical forces created by the machine.

Length Choices (1m-6m)

Bored pile casing comes in different lengths for various projects. Common sizes are 1 to 6  meters. The length can be tailored by clients’ needs. These sizes help match the casing to the borehole depth. Picking the right length helps keep the casing straight and avoids problems during building.

Wall Thickness Options：FES casing typically features 18mm outer wall thickness, 12mm inner wall thickness, and 8mm reinforcing ribs in between. Including gaps, total thickness is around 40mm. Custom wall thickness options are also available based on client needs.

Material Choices

FES casings are available in 25CrMo for high strength or Q355 for cost-efficiency—material selection is based on project needs and budget to ensure optimal performance and value.

Accessories for Bored Pile Casing Systems

Casing Connectors

The casing joint/ casing connector is used to connect sectional or segmental casings and connect the casing with the casing shoe in the foundation piling industry.

One male and one female casing joint will be welded to both ends of casing tubes to make the casings connected. A set of accessories such as conical bolt, conical ring, and threaded ring are needed for connection. Bauer system and Leffer system are both available.

FES can custom-build casing joints interchangeable with clients' casings of various sizes. The popular sizes of casing joints are in ready stock to achieve quick delivery, such as OD620mm, OD880mm, OD1000mm, OD1300mm, etc.

Casing Drive Adaptors

The casing drive adapter connects the casing to rotary drilling rigs in foundation piling applications. FES offers custom-built adapters compatible with most major international brands, including Bauer, Liebherr, IMT, Soilmec, Casagrande, Mait, XCMG, and more.

Key features:

• Welded “U” block design for easy maintenance
• Lock set available
• Common Bauer-standard sizes (OD620mm, 750mm, 880mm) in stock
• Optional twister-style casing spinner with adjustable diameter using bar arms

Casing Shoes 

The casing shoe is used for casing operation with the driving force from the rotary drilling rigs or casing rotators/casing oscillators in the foundation piling industry.

- FES provides casing shoe for both double wall casing and single wall casing drilling.

- All casing shoes are made from high quality steel with special heat treatment.

- FES may custom-build casing shoes interchangeable with clients' casings.

- Length of the casing shoe could be customized as per specific requirement, such as 0.5m, 1m, 3m etc.

- FES casing shoe equipped with casing teeth WS39 and holder SH35, or welding bars like BA90-35, BA01, etc. as option.

- Heavy duty design is optional with extra wear plates on casing shoe to well protect the shoe for longer service life

Casing Tube and The Advantages of Double Wall Casing

FES casings are designed for cased holes in bored pile construction using rotary rigs or casing rotators. Available in permanent or temporary types, they come in diameters up to 5000 mm. Precision machining ensures accurate fit and enhanced torsional strength.  casings are built to handle challenging ground conditions such as rock, cobbles, and mixed formations. With strict linear tolerances kept under ±3mm , they help ensure precise vertical alignment, achieving a drilling accuracy of —critical for deep foundation shafts.

The casings are designed for full compatibility with most major brands in the global foundation drilling market, allowing easy integration into existing systems. Weld quality is carefully controlled to ensure long-term structural integrity even under demanding use.

Compatibility with Industry Standards

Using bored pile casing systems means following industry rules. These rules ensure safety and good performance in building projects. Standards like ISO 9001 and ASTM International give clear instructions for materials and designs. Certified casing parts can handle tough construction needs.

The materials in bored pile casing systems are very important. Makers use asbestos cement, stainless steel, or plastic for casing pipes. These materials stop soil from falling and keep the borehole steady. Certified materials work well in different soil types and conditions.

Tip: Look for ISO or ASTM certifications on casing materials. This helps meet industry rules and makes your project successful.

Parts like casing connectors, drive adaptors, and casing shoes must also meet these standards. Connectors should fit tightly to keep the borehole stable. Drive adaptors need to align the casing correctly during setup. When parts follow industry rules, they improve the system's performance.

Local laws may have extra rules for casing materials and designs. Following these laws avoids problems and keeps your project legal.

Using certified materials and parts makes bored pile casing systems safer and stronger. This ensures good results, even in tricky soil areas.

Customer Reviews and Feedback

Performance in Complex Geologies

How does bored pile casing work in tricky soils? Many users say it’s very reliable in loose or wet ground. It keeps boreholes stable during building and stops soil from falling. Engineers like how it handles pressure without bending or breaking.

In clay or sandy areas, bored pile casing works really well. It keeps the hole’s shape and stops collapses, even in tough spots. This makes it a top choice for places with unstable soil.

Quality of Materials and Manufacturing

Good materials make bored pile casing work better. Customers often praise makers for using strong steel and concrete. These materials hold up under heavy loads and tough conditions.

People also like how precisely the casing is made. Smooth finishes and exact sizes make setup easier. Threaded and welded joints are strong and dependable. These details help the casing work well for big and small projects.

Strong materials and careful manufacturing prevent delays and broken tools.

Global Shipment and Client Satisfaction

Customers worldwide love the fast shipping of bored pile casing. Sea freight is cheap and eco-friendly. For example:

• Shipping causes only 7.43% of emissions, making it greener.
• Trucks, however, create 34.92% of emissions.

These shipping methods make bored pile casing great for global projects. Clients also like quick delivery and smooth customs processes. This has built trust and satisfaction among buyers everywhere.

Picking a supplier with good shipping experience keeps your project on time.

Real-World Uses and Success Stories

Bored pile casing is used in many building projects worldwide. It keeps boreholes steady and supports heavy structures in tough places. Below are examples showing how well it works.

Famous Infrastructure Projects

1. Golden Gate Bridge Upgrade
   Engineers added bored pile casing to make the Golden Gate Bridge stronger. It kept the soft soil under the bridge stable during earthquakes.
2. Burj Khalifa Base
   The Burj Khalifa, the tallest building, uses bored pile casing. It moves the building's weight to strong soil layers for lasting support.

Tip: Big projects need bored pile casing for strong foundations.

Flood-Prone Locations

Bored pile casing works well in areas with flooding problems. For example:

• Mississippi River Levee System
  Engineers used casing to make levees along the Mississippi River stronger. It stopped soil from washing away during heavy rain.

City Construction Success

In busy cities, bored pile casing reduces shaking and protects nearby buildings. One example is:

• London Underground Expansion
  During work on the London Underground, bored pile casing kept boreholes steady in clay soil. It made tunneling safe without harming nearby buildings.

These examples show how bored pile casing solves different problems. Whether in flood zones, cities, or earthquake areas, it keeps projects safe and reliable.

Bored pile casing is very important in building projects today. It keeps boreholes steady, holds up heavy buildings, and works well in tricky soil. There are different types, like single and double wall designs, for various needs. Tools like casing connectors and drive adaptors make setup faster and easier. Good-quality casing causes very little movement, with changes like settlement, sideways shifting, and bending all under 1 mm. This accuracy makes construction safer and protects nearby places. Picking the right casing helps your project stay strong and last a long time.

FAQ

What does bored pile casing do?

Bored pile casing keeps holes steady during building. It stops soil from falling and helps make strong foundations. It moves building weight to deeper, solid ground.

How do you pick single-wall or double-wall casing?

Single-wall casing is good for easy soil or small jobs. Double-wall casing is stronger and works in loose or wet soil. Check your soil type before choosing.

Can you use bored pile casing again?

Yes, steel casings can be used more than once. They are removed after building. Concrete casings stay in place to make foundations stronger.

What tools make bored pile casing better?

Tools like connectors, adaptors, and shoes help casing work well. They keep it straight, protect it, and make it stronger. Pick tools based on your project needs.

Why follow industry rules for bored pile casing?

Rules like ISO 9001 keep projects safe and high-quality. Certified materials and designs meet laws and prevent delays. Always check for certifications when picking casing systems.