Secant Bored Pile Wall

Secant bored pile wall is a type of reinforced concrete wall that is made by drilling multiple holes into the ground, placing steel reinforcement, and pouring concrete. The concrete structure can be used as a surface foundation, retaining wall, or basement wall. Besides being economical to build, secant bored pile walls have good resistance to settlement and lateral forces.

Secant bored pile walls are a cost-effective solution for the construction of foundations and retaining walls. The method involves embedding a steel pipe into the ground, which is then filled with concrete to create a solid wall.

The structure of these walls allows them to be built as a single unit, so they can be constructed without having to wait for other projects to be completed. This makes them ideal for areas where there are multiple construction projects taking place at once. Secant bored pile walls also do not require long-term maintenance or repairs, as they do not contain any joints that could crack or break over time.

Secant bored piled walls are a great choice for your project. They are durable and strong, and they can be used in a variety of situations. Secant bored piling was first developed by the Japanese for use in their earthquake-prone country. It’s been proven to work well in other parts of the world as well, including here in the United States.

Secant bored piling is used in many different applications, from simple residential projects to large public works projects like train stations. The most common use for secant bored piles is as part of a retaining wall system; they’re also used to reinforce existing concrete structures like bridges or dams and as an alternative to pier-and-beam foundations.

Secant bored pile walls have been used successfully across the globe because they require little maintenance beyond routine inspections and minor repairs if needed. They’re also known for being very cost-effective; when compared with other types of retaining walls, they tend to be less expensive while still offering comparable structural integrity and longevity over time.

What is Secant Bored Pile Wall

A secant bored pile wall is a system of reinforced concrete piles in the ground that is used to support buildings and other structures. Pile driving can be done on the surface or from inside the building, but if you are working in an area with high groundwater then it would be best to install your pile from inside.

Because of their durability and strength, these walls are often seen in high-rise buildings such as office towers, hotels, and apartment buildings. They also have been used for subway stations, seawalls, dams, and bridges as well as low-rise commercial buildings. Secant bored pile walls offer several advantages over other types of construction methods.

Uses of Secant Bored Pile Wall

Secant bored pile wall is used in the construction of various structures like bridges, roads, and buildings. The main advantage of using this type of wall is that it has a very high load-bearing capacity. This means that it can withstand heavy pressure from above without getting damaged. Secant bored pile walls are also known for their resistance to corrosion as well as their ability to withstand weathering effects due to exposure to wind and rain etc.

Reasons for using Secant Bored Pile Wall

Secant bored pile wall is constructed by drilling contiguous holes in the ground, placing steel reinforcement, and pouring concrete. The advantages of secant bored pile walls are as follows:

  • Secant bored piles can be installed in a variety of soil conditions, including loose sand and gravel; dense clay and hard rock; soft clay to bedrock; and even mixed soils with high water tables.
  • They are relatively easy to install on a large scale because they require limited excavation equipment.
  • Secant bored piles can be used as part of an array of foundation systems that can provide solutions for many challenging site conditions (e.g., where there is limited space). They have been successfully used alone or together with other foundation elements such as spread footings and slabs on grade (concrete floors) in both new construction scenarios as well as retrofit applications where existing structures need additional support

Secant bored pile wall is constructed by drilling contiguous holes in the ground, placing steel reinforcement, and pouring concrete.

Secant bored pile walls are typically used for retaining walls or to support concrete floors and roofs. They can also be used to reinforce existing earth structures such as tunnels and subway stations.

In this method, the walls are constructed by drilling contiguous holes in the ground, placing steel reinforcement, and pouring concrete.

The secant bored pile wall is a type of retaining wall that relies on concrete-filled steel beams to make up the face of the structure. This system is made up of a series of vertical columns arranged in an X pattern, with each column connected together at their ends by horizontal beams. As with all other types of retaining walls, these columns are drilled into the ground at 90-degree angles (secant) and then filled with concrete. The strength achieved through this construction method makes it ideal for supporting high loads (including tall buildings), as well as resisting lateral or horizontal forces pushing against them from below or above.

The advantages of secant bored pile walls are as follows.

Secant bored piles offer a number of advantages over other types of wall construction.

Firstly, they can be used for both retaining walls and free-standing walls. They are versatile enough to be used in both vertical and horizontal wall construction, as well as residential and commercial construction. Secant bored pile walls can also be used inside or outside the building in which they are being constructed.

Secondly, they require less material than other types of masonry walls due to their hollow nature. In addition, they can be made out of recycled materials making them more environmentally friendly than traditional brick or cinderblock construction methods that require more raw materials such as clay or sand before being fired into bricks at high temperatures (over 1200 degrees Celsius). This allows builders to save money on labor costs since less manpower is needed during installation time compared to other types like a concrete block which must first dry thoroughly before being laid down within an hour’s time frame so that it doesn’t crack during the curing process after pouring concrete onto the top surface layer.

Types of Piles

Piles are the main structural elements of a secant bored pile wall. They are driven into the ground to support and transfer loads from the superstructure to the foundation. There are many types of piles, but they can be divided into six main categories: gravity piles, H-piles, tee piles, cantilever piles, helical piles, and drilled shafts.

The disadvantages of secant bored pile walls are as follows.

The disadvantages of secant bored pile walls are as follows:

  • The soils and conditions under which this type of wall is constructed should be suitable. If not, it may settle or collapse.
  • It is expensive to construct because it requires large machinery and many workers with specialized skills.
  • It takes a long time to construct because of the large number of workers, who have to work in shifts throughout the day and night for months on end.

Cost of Construction

The cost of construction is the total expense incurred during the construction process. The cost of construction includes all expenses from purchasing materials and hiring a contractor to buy the insurance and paying taxes.

Generally, the cost of constructing a secant bored pile wall will depend on:

  • The location of your building site. For example, if you’re building in an urban area with high crime rates or near a transportation hub that brings in lots of commuters, then this could increase your costs because you might have to hire security guards or pay for traffic flow management plans (depending on how big your business is).
  • Size/type of building (commercial vs residential). For example, small businesses may only require one bathroom while large ones may need many more facilities including showers as well as toilets; so depending on what type of enterprise you run then this can affect how much money goes into making sure everything meets health standards!
  • Construction type & budget restrictions/requirements? If we’re installing new landscaping around our house but don’t want anything too expensive…then we might choose plastic instead.

Materials needed for Secant Bored Pile Wall

Most of the materials needed for a secant bored pile wall are the same as those used in concrete construction. In addition, some special materials are required for creating the concrete mixture and laying out the secant bored piles. You may need additional materials depending on your specific project:

  • Steel reinforcement (rebar) is required to support the vertical pressure in a secant bored pile wall. Reinforcing steel must be placed according to building codes and specifications; verify this information with your local building inspector before beginning work on any project involving reinforced concrete or rebar.* Concrete is made up of cement, sand, gravel (aggregate), water, air entrainment agents (to increase strength), and additives such as fly ash or slag cement.
  • Aggregate is fine-grained material used in making concrete mixtures.
  • Water helps make fresh concrete harden through chemical reactions between water molecules and calcium ions from lime (in Portland Cement).

Tools needed for Secant Bored Pile Wall

  • Drill machine
  • Hammer
  • Concrete pump
  • Cement mixer
  • Shovel * Wheelbarrow * Steel reinforcement

Steps involved in building Secant Bored Pile Wall

  • Excavation and foundation: The first step of the process is to excavate the soil at the site, so as to find out how deep your foundation should be. As you dig deeper, you will need more materials such as concrete, rebar rods, etc., which are necessary for framing a Secant Bored Pile Wall. This could cost thousands of dollars depending on what type of material needs to be used for each stage of construction.
  • Framing: You can build the frame using wood or steel beams depending on what is required by local codes and ordinances in your area (this may also vary depending on where you live). There may also be some special requirements depending on what kind of soil conditions exist at that location (e.g., sandy vs clay soils). If there are any underground utilities such as gas lines or water pipes then these connections must also be made during this stage before proceeding with any further steps in building Secant Bored Pile Walls.

Site preparation

Site preparation is the process of clearing the site, removing debris, and preparing the ground for construction. Site preparation is a critical step in the construction process because it ensures that all obstructions are removed from your property and that any existing foundations are properly removed. If not done correctly, this could cause delays in your project or even complete failure! Before beginning any work on your project, you should consult with an architect or engineer to determine what type of foundation will be necessary for your home or business.

The first step in site preparation involves clearing away any obstructions within your lot such as trees and shrubs that may need removal prior to excavation activities beginning on site. The second step involves removing all underground utilities such as sewer lines, electric cables/wiring conduits, and gas lines – this must be done by licensed professionals who have obtained permits from local utility companies first (make sure these permits have been approved too). The final thing left after removal services are complete is leveling out uneven areas so they can accommodate new construction materials like concrete slabs which would otherwise crack due to uneven surfaces underneath them.”

Excavation and foundation

Excavate the foundation pit to a depth of about 3 feet. Remove the excavated soil from the site. Place a foundation on firm, level ground and fill it with concrete within 24 hours to ensure adequate curing time for the concrete.


In order to frame the secant bored pile wall, steel reinforcement bars are used. The holes created in the ground during the drilling process are filled with these reinforcement bars and concrete is poured over them. After this, steel plates are placed on top of these bars so that they can be used as a support for concrete slabs that will be used later on.

What base is needed for Secant Bored Pile Wall

A strong and level base is essential for a secant bored pile wall to perform as expected. If the base is not strong enough, it can cause the wall to fail under stress. Likewise, if the base is not compacted and leveled correctly, it will be susceptible to the excessive settlement that may cause cracking in the wall.

A strong base should also be free of obstructions such as boulders or tree stumps that could potentially interfere with pile installation or add unnecessary cost to construction due to delays related to their removal. The surface should also be free from any loose materials like gravel or dirt because these materials may get wedged between individual piles and create weak links in the structure that could result in the collapse of the entire system over time especially if there are many such weak links within close proximity (i.e., when there are several rows).

Benefits of Secant Bored Pile Wall

A secant bored pile wall is a cost-effective method of construction that can be used in many different types of construction projects. It is also an extremely stable structure with minimal settlement and movement during the lifetime of the project. Secant bored pile walls are easy to construct, and they offer an alternative to concrete slabs for some applications.

Cost of Secant Bored Pile Wall

There are many factors that can determine the cost of a secant bored pile wall. The first factor is the cost of materials. The second factor is labor cost, which includes wages and benefits paid to employees involved in site preparation, drilling, and driving piles. Equipment and machinery costs also contribute to overall project costs because they require maintenance and replacement over time.

The third factor affecting total project cost is site preparation work required before construction begins (including building demolition, and removal of topsoil, or other surface debris). Finally, there may be additional expenses associated with obtaining necessary permits from government agencies prior to starting project activities (such as environmental impact studies). Once all these costs are taken into consideration it’s possible for you as a buyer or investor on behalf of someone else to decide whether investing money into this type of construction method is worth it for your particular situation.

The material cost of Secant Bored Pile Wall

The material cost of the Secant Bored Pile Wall is important to understand since it directly affects the final price of the structure. The main materials used in construction are steel reinforcement and concrete.

Other Materials

In addition to these two primary materials, there is a wide range of other supplies needed for construction, including:

  • Cement powder
  • Water-proofing agents

The labor cost of Secant Bored Pile Wall

The labor cost of a Secant Bored Pile Wall is the time required to construct Secant Bored Pile Wall. It varies with the size and complexity of the structure. Labor costs for construction can be estimated by using labor productivity values from building cost manuals such as [the Construction Specifications Institute (CSI)] or [the National Ready Mixed Concrete Association (NRMCA)].

Maintenance tips for Secant Bored Pile Wall

The maintenance of a secant bored pile wall can be divided into three parts:

  • Regular inspection of the wall. This is done by drilling holes at fixed intervals. These holes allow water to drain out, which reduces corrosion of the steel reinforcement bars, especially in wet ground conditions.
  • Repair damaged areas if they are found during regular inspection or after an earthquake struck near your property. This can be done by cutting a small opening on the surface of the concrete wall, between two columns, and inserting reinforcing steel bars into it before pouring another section over those bars (which will connect them).

Steel Reinforcement Details for Secant Bored Pile Wall

You are planning a secant bored pile wall for the basement of your house. You have decided to use 18-inch diameter, 5-feet long H-section steel sheets as secant pile reinforcement, with each section being 1 foot long. The maximum allowable bending stress in the reinforcement is 50 KSI (345 MPa).

The wall is planned to resist hydrostatic and lateral loads up to 0.75 ksf (20 psf) acting on one side of each sheet in both directions at any point along the length of an individual sheet within the plane of bending. What is the minimum required thickness for steel reinforcement?


A 1-inch thick H-section steel plate should be used for this application.

In Conclusion

The costs of building a secant bored pile wall can vary depending on the area you are in. The materials used for construction are also dependent on the type of soil. The cost of construction is always high due to the fact that it requires specialized equipment and skilled workers who know how to handle this type of project properly.

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