Difference Between Tied Column and Spiral Column | What Is Spiral Column | What Is Tied Column

Spiral Column

• Spiral columns containing spirals (spring-type reinforcement) to hold the main longitudinal reinforcement and to help increase the column ductility before failure.
• The difference of 0.10 between the two values shows the additional ductility of spirally reinforced columns.

Spiral Reinforcement

• Main reinforcement into spiral form leads to increase the bending moment, torsional moment, shear, ductility with reduced deflection.
• This also leads to better earthquake performance. The main objective is to carry out the experiments and mathematical modelling on RCC beams and columns having main spiral reinforcement.

Tied Column Vs Spiral Column

• Tied columns containing steel ties to confine the main longitudinal bars in the columns.
• Spiral columns containing spirals (spring-type reinforcement) to hold the main longitudinal reinforcement and to help increase the column ductility before failure

What Is Spiral Column?

Spiral Columns are normally cylindrical with continuous spiral bars wrapped around them. The spiral column’s helical reinforcement, also known as spiral reinforcement, is another name for the reinforcement employed in the spinal column. Spiral reinforcement helps to provide transverse support.

What Is Ties in Column?

The term tie is used to define the transverse reinforcement provided in column where the primary mode of load transfer is compression. Here the requirement of transverse reinforcement is primarily to prevent the premature buckling of individual bar and to confine the concrete in core.

Tied and Spiral Column

Spiral columns are usually circular. Spiral reinforcement should be kept perpendicular to the line and firmly in place. Tied Column: A tied column is one in which smaller diameter transverse bars, commonly known as ties, attach the reinforcing bars at regular intervals.

Spiral Brick Pillar

A spiral brick pillar refers to a structure that is constructed using bricks and is designed in a spiral or helical shape. It typically consists of a series of bricks arranged in a circular or semi-circular pattern, gradually ascending or descending in a helix formation.

Column Tie

In the context of construction and architecture, a column tie refers to a structural element used to provide additional stability and reinforcement to a column. It is a component that helps prevent the column from buckling or failing under various loads, such as vertical compression, lateral forces, or seismic activity.

Stub Column Meaning

A stub column is a type of column whose length is very small and does not connect to the footing directly. So, it does not have a footing or pedestal and relies on a beam or slab to transfer loads. The stub column acts as a point load on a beam on which it rests.

Spiral Rebar Ties

Spirals stand in for ties, and the primary bars are arranged in a circular pattern. In areas prone to earthquakes, spiral columns are more common. Spiral Columns typically take on a cylindrical shape and have a spiral bar wound continuously around their circumference.

Lateral Ties Meaning

Lateral ties are used in columns. The load is carried by the vertical steel bars, while the ties are provided to keep the bars in their required position without getting disturbed while compacting the concrete by the needle vibrators. The ties do not take or share any part of the load coming on the column.

Types of Ties in Column

Types of Stirrups in Column

• Helical Reinforcement.
• Lateral Ties. Lateral Tie Configuration for 4- Bars. Lateral Tie Configuration for 6- Bars. Lateral Tie Configuration for 8- Bars. Lateral Tie Configuration for 10- Bars. Lateral Ties for different column cross sections.

What Is Tied?

A tied column is one in which smaller diameter transverse bars, commonly known as ties, attach the reinforcing bars at regular intervals. The major purpose of the ties is to maintain the longitudinal bars vertical while they are built. It also contributes to the column’s buckling resistance.

Twisted Brick Columns

Twisted brick columns are a unique architectural feature where brick columns are constructed in a twisted or spiraling form. Rather than being built in a straight vertical or horizontal alignment, the bricks are arranged in a helical pattern, creating a visually intriguing and distinctive appearance.

Concrete Column Ties

Concrete column ties, also known as column reinforcement ties or column stirrups, are an essential component of reinforced concrete structures. They are used to provide lateral support and enhance the structural integrity of concrete columns.

Rebar Spiral

A rebar spiral bending machine is a specialized piece of equipment designed to bend rebar into a spiral shape. This machine is often used in the construction industry to create reinforcement for concrete structures such as columns, beams, and other architectural features.

Difference Between Column and Pillar

A pillar can be both decorative and functional like a front canopy at the entry of your home with pillars as decorative piece of elements. Column, on the other hand, is purely functional and a particular type of pillar, especially one with an identifiable shaft or base like a roof or a horizontal beam.

Spiral Concrete Column

Concrete columns reinforced with spiral reinforcement can withstand more loads than the tied columns. This phenomenon happens because when load eccentricities are small, spirally reinforced columns show greater toughness, greater ductility than the columns with ties.

Pile Spiral Formula

Depth of pile /Pitch + 1 = 20/0.1 + 1 = 201 numbers. So, for 20 meters pile, 884.4 meter long spiral should be cut. d2 / 162 = 12 x 2 / 162 = 0.888 kg. Quantity of 12 mm dia bar = Total cutting length x unit weight = 884.4 x 0.888 = 785.35 kg.

Spiral Stirrups

Spiral stirrups, also known as spiral ties or helical ties, are a type of reinforcement used in reinforced concrete structures, particularly in columns and beams. They are designed to provide additional strength and ductility to resist the torsional forces that can occur in structural members.