How is column jacketing done?

It consists of added concrete with longitudinal and transverse reinforcement around the existing column. Jacketing is the process whereby a section of an existing structural member is restored to original dimensions or increased in size by encasement using suitable materials.

Which method is used for strengthening of column?

Three principal techniques are available for strengthening RC columns: concrete jacketing, steel jacketing, and composite jacketing (FRP) [1]. The susceptibility of existing buildings to structural damages largely depends on the quality of the design, detailing, and construction.

What are the different types of jacketing?

Steel Jacketing For rectangular columns, rectangular steel jacket may not be as effective as circular jackets and therefore, the use of stiffners can also be considered. Fibre-reinforced polymer (FRP) , also Fibre-reinforced plastic , is a composite material made of a polymer matrix reinforced with fibres. …

What is jacketing What is steel jacketing and FRP jacketing?

FRP jacketing technology (FRP reinforcement technology) is divided into fiber cloth reinforcement technology and fiber plate reinforcement technology. 4 FRP jacketing almost does not require bolts and anchors and external compression, and there is almost no damage to the original concrete structure.

How do you strengthen a weak column?

Strengthening Techniques for R.C. Columns

1. Reinforced Concrete Jacketing. It is one of the techniques used to improve or restore capacity of reinforced concrete column.
2. Steel Jacketing.
3. FRP Confining or Jacketing.

What is Guniting process?

Guniting is a process used in construction for the application of slope stabilization and certain rehabilitation purpose mainly in the construction of retaining walls, swimming pool construction, tunnel construction, in fluid tank construction and some of the concrete repair works.

How do you strengthen steel columns?

Another method of strengthening and updating of the steel structure is to create beam-column joint between existing beam and existing column [14-16]. It helps to increase the loading capacity of steel structure. Welding additional plates on both sides of existing columns is used for strengthening.

What is jacketing in civil engineering?

Jacketing is a technique used to increase the strength of existing structural members (e.g. Columns, Beams etc.) by providing a “Jacket” of additional material around the existing member. This additional material can be of several types e.g. concrete, steel or FRP etc.

What is Rebarring?

Rebaring is the method of insertion of the Steel bars when, When Steel rod as per drawing has not been installed. Rebaring technique is reinforced concrete construction is a method for proper fabrication and placement of reinforcement bar as per the design and drawing of RCC work.

Which methodology is used for strengthening of beam?

Jacketing has been considered as one of the important methods for strengthening and repairing of RC beams. Jacketing of RC beams is done by enlarging the existing cross section with a new layer of concrete that is reinforced with both longitudinal and transverse reinforcement.

How do you strengthen structures?

The strength of structures can be increased by changing their shape, using methods such as tubing and folding. Shapes of structures can be circular, triangular or square.

What is grouting of concrete?

Cement Grouting is the injection under pressure of cement or grout to fill voids or fractures in the soil, rock unit or concrete structure. Cement Grouting is a process by which cement is injected under pressure to fill fractures and voids in concrete structures.

How is jacketing used to strengthen building columns?

• Jacketing is the most popularly used method for strengthening of building columns. • Jacketing consists of added concrete with longitudinal and transverse reinforcement around the existing column. • It improves axial and shear strength of column and major strengthening of foundation may be avoided. 3.

How to jacket RC columns step by step?

Jacketing procedure of RC columns step by step SYNOPSIS This strengthening technique, unlike other methods where steel elements are used, does not have a specialized work demand.

What do you need to know about jacketing?

• Jacketing consists of added concrete with longitudinal and transverse reinforcement around the existing column. • It improves axial and shear strength of column and major strengthening of foundation may be avoided. 3. NECESSITY OF JACKETING • The load carried by column is increased. • When there is error in design.

How do you create columns of text in PowerPoint?

On the right side of the window, click Text Options > Textbox . Click Columns, enter the number of columns in the Number box, and the space between each column (in inches) in the Spacing box. If the Columns button is grayed out, it’s likely because you are working on a table.