What is an expansion joint cover?

What is an expansion joint cover?

What is Expansion Joint Covers? Expansion Joint Cover is a cover or a covering system that protects the structural gap designed to accommodate the movement of the building in a controlled to prevent damages to the building finishes. There are a wide variety of Expansion Joint Covers available now in the market.

What is the purpose of an expansion joint *?

An expansion joint or movement joint is an assembly designed to hold parts together while safely absorbing temperature-induced expansion and contraction of building materials, and vibration, or to allow movement due to ground settlement or seismic activity.

What is the purpose of an expansion joint in brickwork?

An expansion joint separates brick masonry into segments to prevent cracking caused by changes in temperature, moisture expansion, elastic deformation, settlement and creep. Expansion joints may be horizontal or vertical.

What are the types of expansion joint?

Types of Metal Expansion Joints

• SINGLE UNRESTRAINED.
• UNIVERSAL EXPANSION JOINT.
• SINGLE TIED EXPANSION JOINT.
• TIED UNIVERSAL EXPANSION JOINT.
• PRESSURE BALANCED ELBOW EXPANSION JOINT.
• GIMBAL EXPANSION JOINT.
• HINGED EXPANSION JOINT.
• IN-LINE PRESSURE BALANCED EXPANSION JOINT.

What is an expansion joint in concrete?

A concrete expansion joint – or control joint – is a gap which allows the concrete to expand and contract as/when the temperature changes. It forms a break between the concrete and other parts of a structure to allow movement without causing stress, which can lead to cracking.

What is expansion joint in heat exchanger?

Expansion Joints are an integral part of many shell and tube heat exchanger designs where process condi- tions produce differential expansion between the shell and the tubes. The tubes in heat exchangers are typically hotter than the shell, creating stress where the thermal expansion is generated.

What is expansion joint in civil engineering?

In building construction, an expansion joint is a mid-structure separation designed to relieve stress on building materials caused by building movement induced by: Thermal expansion and contraction caused by temperature changes. Sway caused by wind.

What are expansion joints in a house?

Expansion joints are separations between structures, simply gaps, to allow them to move and reduce stresses that may occur. Often, these gaps are filled with an Expansion Joint System to fill in the void to ensure walkability, a complete building enclosure, waterproofing, and general serviceability of the structure.

Where are expansion joints used in concrete?

Expansion joints are put in place before the concrete is poured. Expansion joints are used to allow the slab to move and not put stress on whatever it abuts. These joint are placed where a slab meets a building, where a slab meets another slab, and where a pool deck meets the coping.

What is a flanged and Flued expansion joint?

The outside edges of the plates are formed in one direction (flanged), and the inside edges are formed in the other direction (flued). The two halves are welded together and then welded into the heat exchanger shell.

What are bridge expansion joints and how do they work?

Bridge expansion joints are designed to adjust its length accommodating movement or deformation by external loads, shrinkage, or temperature variations, and allow for continuous traffic between bridge structures and interconnecting structures (another bridge or abutment).

What is a rubber expansion joint?

Rubber expansion joints ( Fig. 16.69) are flexible joints or connectors made from elastomers with metallic reinforcement to provide stress relief in a piping system due to thermal changes. Rubber expansion joints can absorb vibration and shocks extremely well. This type of expansion joint can also reduce noise.

What happens if there is no access to the expansion joint?

If a bellows expansion joint is located in a space with no access, then the shell wall must be cut open, which results in labor-intensive and complex repairs that require a large number of man hours. Access space in the expansion joint enclosure must be designed for personnel to perform maintenance.

What are the different types ofexpansion joints?

Expansion joints can be broadly classified into three categories based upon their total movement range as follows: Small Movement Joints Total Movement Range < 1¾ in. Medium Movement Joints 1¾ in. < Total Movement Range < 5 in. Large Movement Joints Total Movement Range > 5 in.