What Are Steel Piles | 4 Types of Steel Piles | Corrosion of Steel Piles Steel | Advantages and Disadvantages of Steel Piles Foundation

What Are Steel Piles | 4 Types of Steel Piles | Corrosion of Steel Piles Steel | Advantages and Disadvantages of Steel Piles Foundation7 min read

Introduction To Steel Piles

Steel sheet pipe piles and steel pipe piles are widely used in large construction sites such as harbors, bridge construction, retaining walls, cofferdam, pile foundation, and others.

Steel piles are more suitable for soft thick ground. Because in this type of soil the bearing strata are available in the deeper layer.

Steel piles are more economical as compare to other piles. because it is easy to customize, easy to transport, and easy to connect Generally, steel piles are used in pile foundations.

where H- Section pile and Isection piles are used. In H- section thickness of flange and web are the same and vice versa in I-Section both, the thickness of flange and web is different.

Read More: Under Reamed Piles | Under-Reamed Pile Foundation Under Reamed Piles Construction | Bulb Calculation


Types of Steel Pile for Deep Foundations

1. Pipe Piles

What Are Steel Piles | 4 Types of Steel Piles Used | Corrosion of Steel Piles Steel | Advantages and Disadvantages of Steel Piles Foundation
Open End Bearing Pile and Clode End Bearing Pile

The pipe pile has behaved as an end-bearing pile or friction pile. These piles are seamless and steel piles which are created by welding. The pipe pile may be driven either open-ended or closeended.

OpenEnded Pile: As the name suggests driven pile end is openUsually, it is useful in the rock or hard state. the openended piles are sunk into the soil.

The soil that is inside the steel pile is removed with the help of water jetting and compressed air .then after the pile is driven into the required depth; the steel pile is filled with concrete.

Close end pile: In the case of closedend piles, the driving end of each pipe is closed by welding. The material of the shoe is made of steel or cast iron which is used at the end of the pile as a pile shoe.

Once the closeend pile is driven into the soil. After that pile is filled with the required amount of concrete. The thickness of the pile is ranging from 8 mm to 12 mm and the diameter of the pile ranges from 0.25mm to 1.2 mm.


2. Screw Piles or Helical Piles

What Are Steel Piles | 4 Types of Steel Piles Used | Corrosion of Steel Piles Steel | Advantages and Disadvantages of Steel Piles Foundation
Helical Pile

 The screw piles are made up of cast iron or steel. These piles make a long shaft which end is either helical form or screw base

The external diameter of the shaft is ranging from 15 cm to 30 cm and the diameter of the screw base ranging is 45cm to 150 cm.

Screw piles shaft may be hollow or solid. Installation of the pile into the ground is with the help of an electric motor. It is suitable for loose sand and loose clay.

These types of soil screw piles are help to increasing loadbearing capacity. The biggest advantage of a screw pile is easy to installation


3. Disc Steel Piles

What Are Steel Piles | 4 Types of Steel Piles Used | Corrosion of Steel Piles Steel | Advantages and Disadvantages of Steel Piles Foundation
Disc Steel Pile

Disc steel pile arrangement is similar to the screw piles,  screw pile consists of solid cast iron pile which attached castiron disc to its foot.

So that foot is helpful to increase the bearing area of the pile. Generally used in marine construction.

 During penetration, the pile sinks into the ground. So that water jetting process is made in the bottom of the pile. This type of pile is suitable in soft and sandy soil.

Which is allowing to the sinking of the pile by water jetting. It is mostly used in marine construction where the total penetration of the pile in the ground is required to be large.


4. H-piles

What Are Steel Piles | 4 Types of Steel Piles Used | Corrosion of Steel Piles Steel | Advantages and Disadvantages of Steel Piles Foundation
H – Pile

The rolled steel H- pile acts as a bearing pile which is a newly developed technology in the pilling industryH piles produce large impact stress during hard driving.

HPile is generally used in hard strata like rocky areas.  Also Hpile has a small crosssectional area of the pile is made it easier to soil displacement. So that no extra process of jetting, coring is required for penetration of Hpile.

Advantages of H-Piles

  • HPiles produce a small amount of displacement.
  • H-piles required small space for storage.
  • H-piles are handled easily.
  • H- Pile is generally used in the construction of retaining walls, cofferdam and bridges, and bulkheads.
  • H-piles penetration can be performed closer to the existing structure.
  • In the H-pile splicing process can be done easily.
  • Hpile can penetrate the ground is up to 100m depth.
  • H -piles act as friction and compaction piles.

Read More: Pile Foundation | Types of Pile Foundations | Uses of Pile Foundation


Corrosion of Steel Piles Steel

Piles are embedded in an impervious layer of the earth, at least 2 ft below the level of the ground, will generally be free of corrosive effects because of insufficient oxygen in the atmosphere.

In an Embedded portion of the steel, piles may be affected by corrosion. Because the surrounding layer consists of cinder fills, coal, alkaline soils, wastes from plants, etc.

Electric deterioration of the steel piles can be protected by the use of protecting layer or coating like coal, paint and epoxy layering, etc.


Durability of Steel pile

In many cases rate of corrosion is less at that time protective method is not needed and in other cases rate of corrosion is high at that time a protective method is used for piles.

The following methods are used:

  • To apply coating layer on the piles
  • Use thicker section
  • Use highgrade steel
  • To avoid maximum bending moment because it leads to corrosion.
  • Cathodic protection for piles.
  • In marine area used ASTM960 (SPLASH ZONE)
  • Extension in concrete capping

Read More: Pile load Test | Pile Loading Test | Pile Load Test Procedure | Pile Load Test Is Code


Features of Steel Piles

To perform Excellently

Steel Pile has a small sectional area so that during driving the pile realizes less earth removal and low vibration.

Easy to customize

Steel piles are easily customizable in length, diameter, and thickness.

Easy to connectwith superstructure

 In the steel pile at the top portion reinforcing bars are available, which connect the superstructure easily.

Easy to handle

Steel pile is easy to handle and transport because of its toughness and lightness ability.

 To provide high bearing capacity

When the steel piles are driven into the soil, they provide a high bearing capacity.

For High bending strength             

During earthquakes resists horizontal forces of the steel pipe piles with high stiffness and high bending strength.


Advantages and Disadvantages of Steel Piles

Advantages

  • Steel pile is capable to penetrate through stiff layers or boulders.
  • Steel piles possess high bearing capacity compare to others
  • These piles can handle rough handling.
  • Soil volume displaced during driving of steel pile is compare to less.
  • Steel piles provide strong and durable foundation for structure.

Disadvantages

  • Steel piles are highly susceptible to damage due to corrosion and electrolysis.
  • Steel piles are costly compare to others unless the bearing stratum able to produce high pile capacity.

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What is the advantage of using steel piles in construction?

  • Steel pile is capable to penetrate through stiff layers or boulders.
  • Steel piles possess a high bearing capacity to compare to others
  • These piles can handle rough handling.
  • Soil volume displaced during driving of steel pile is compared to less.
  • Steel piles provide a strong and durable foundation for the structure.
  • Steel piles provide a strong and durable foundation for the structure.
  • What is the type of steel pile for a deep foundation?

  • H- pile
  • Screw Pile
  • Disc Pile
  • Pipe pile
  • How the effect of corrosion occurs on the steel pile?

    Piles are embedded in an impervious layer of the earth, at least 2 ft below the level of the ground, which will generally be free of corrosive effects because of insufficient oxygen in the atmosphere.

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