What Does Jointing Mean In Construction?

What Does Jointing Mean In Construction?

What Does Jointing Mean In Construction?

Jointing in construction is the process of joining various structural pieces together to form an overall structure.

It involves cutting, fitting and securing two or more elements together by means of nails, bolts, screws, adhesives or other fasteners.

Joints must be carefully designed to ensure that they are strong enough to withstand tension and compression forces as well as other environmental stresses.

Furthermore, it is important for joints to be properly sealed against water and air leaks to protect the entire structure from any potential damage.

Jointing can also be used to create aesthetically pleasing effects when connecting different materials like bricks, stones or metalwork.

Why Is Jointing Important In A Building?

Jointing is an essential process in building construction, as it is used to securely connect components of a structure such as walls and floors.

Joints are also used to ensure the structural integrity and stability of a building by distributing loads evenly throughout its components.

Properly executed jointing will not only add strength but also increase the longevity of the structure by preventing seismic movement or random settling which could lead to cracks or other issues.

Jointing is also important for sealing joints against air infiltration which can cause energy loss or condensation problems.

In conclusion, proper jointing plays an essential role in ensuring the overall durability of a building and the safety of those inside it.

What Is Jointing In Concrete?

Jointing in concrete is the process of creating structural joints between different pieces of concrete for the purpose of providing structural integrity and minimizing cracking.

These joints are typically filled with a flexible material such as asphalt, caulking or sealants that allows for movement between the two pieces of concrete without affecting its overall structural integrity.

Proper jointing should be completed prior to pouring concrete and is important for extending the life and preventing settlement cracks from occurring.

Joints should also be placed at regular intervals throughout each slab, wall or other element being created.

What Are The Types Of Construction Joints?

Here are the different mortar joint options to consider:

Concave Joint: This joint is the most common and widely used, as it provides the best protection against water penetration. Proper tooling helps to compress the mortar into the joint, making it more weather-resistant.

V Joint: This joint has a geometry that makes it less effective in preventing water from penetrating compared to the concave joint. Proper tooling can help prevent water accumulation in the joint if done correctly.

Weathered Joint: This joint is used to highlight horizontal joints and helps to shed water, but it may not provide adequate protection if the mortar is not adhered tightly or if shrinkage cracks develop in the bond line.

Flush Joint: This joint is used when a wall is going to be plastered or painted and the joints need to be hidden.

It requires extra attention to ensure weather resistance, as water can accumulate on the joint if it sticks out from the brick.

Maintaining a consistent and sufficient bond to the brick can also be challenging as the mortar is not compressed into the joint.

Squeezed Joint: This joint is commonly used in indoor architecture or outdoor fences and provides a rustic texture, but it can be prone to moisture intrusion due to its exposed sides.

Beaded Joint: Like the squeezed joint, the beaded joint is not recommended for exterior building walls as it has an exposed ledge. This joint is commonly seen in stone foundation walls for architectural purposes.

Raked Joint: The raked joint is not suitable for exterior walls as its ledge can allow water, snow, or ice to accumulate on top of the brick.

The mortar sitting back from the face of the brick can lead to water permeating the wall if the joints become saturated.

Struck Joint: This joint is used to emphasize horizontal joints, but it is not recommended for exterior building walls as water can penetrate the lower edge.

No matter what joint is chosen, proper tooling can improve the wall’s resistance to water and weather.

During a repointing project, you can choose to use a different joint profile, with a concave profile being the most commonly desired for its ability to compress the mortar and protect against moisture.

However, it’s important to consider the aesthetic and historical significance of the project when making a decision.

What Is The Most Commonly Used Type Of Jointing?

The joint that is most commonly utilized is the concave joint, which is also considered the best joint for preventing water intrusion.

The process of tooling forces the mortar deeply into the joint, leading to greater weather resistance.

What Are Jointing Tools?

In masonry construction, the convex jointer and the V-jointer are the most widely used tools around the world.

The convex jointer is a rounded piece of steel used to create a rounded indentation or a concave joint in the mortar.

It can be found in pocket or long sizes and comes with a wooden handle for easy handling. This type of convex jointer is also known as the sled runner convex jointer or Hubbard Convex sled runner. Varying widths and lengths are available in the market.

The V-jointer is made of angled steel with a V-shaped piece that creates a V-shaped groove in the mortar joint when moved through it.

Both short and long style joints can be created using this tool, or a solid straight piece of wood can be used instead.

The grapevine jointer is used to create intended lines on the mortar joint. It has a raised bead of steel at the center and was widely used in American masonry design and construction.

This type of jointer is only available in a shorter size with a difficult to reassemble handle. The grapevine design adds a rough or textured appearance to the masonry surface.

The rake out jointer is used to create raked joints in the mortar. It has a screw arrangement that allows the mason to adjust the depth of the raked joint.

A new development in this field is the raked joint with wheels, which helps create clear, neat, and straight joints.

The slicker is used to create flush or flat joints in the mortar. It is a small flat-edged piece of steel used in smooth mortars and takes the shape of an S-tool.

Different sizes of slickers are available to create different size flat joints.

This tool is not effective for use with stone and paving systems and is best for pointing in tight areas or corners of a building to provide a neat and clean joint.

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