8 Step Cutting Breaking Removing Concrete
MegasawConcrete Removal

8 Steps For Cutting, Breaking And Removing Concrete!

Do you have a concrete cutting or removal project? Did you know that concrete cutting, breaking, and removal isn’t as easy as you may think? Please read below for more information.

Breaking and removing street pavement to give way to a new concrete pavement is usually done by big-time contractors with the right technology and equipment.

However, if you have a minor domestic concrete cutting project such as repairing water or drain leaks in your yard, you need to know how to deal with such a situation.

Even if you decide to hire a professional concrete cutting service for such a minor project, you should still know about the basic steps for cutting, breaking, and removing concrete.

Here are 8 steps for cutting, breaking, and removing concrete in your home or garden.

  • Prepare The Site
  • Have The Right Tools
  • Use Safety Equipment
  • Lay Out The Area
  • Cut The Concrete
  • Break The Concrete
  • Remove The Concrete
  • Complete The Work

Prepare The Site

The specific site should be cleared of all clutter before cutting concrete. Try your best to clear as much dust and debris from the site.

The passage should be clear enough so that you can easily remove the broken concrete by following the appropriate safety procedures.

Have The Right Tools

Make sure you have the right tools when you plan to cut concrete in your home or yard.

You should have an electric concrete cutter with a diamond blade, a large pry bar, a sledgehammer, a shovel, a bolt cutter to cut the wire mesh, a jackhammer, and a demolition saw for rebars.

Use Safety Equipment

Concrete cutting is a dirty job that can affect your respiratory health. You should have the right safety equipment ready for such a project.

Here is some of the safety equipment you need – Goggles, thick gloves, chalk for line marking, ear protective gear, dust mask, work boots, and thick clothes to protect you from tiny fragments of concrete may fly around at different directions.

Lay Out The Area

Use a straight-edge piece of wood and coloured chalk to mark the area you’re cutting. The line marks should be wide enough so that you can clearly see them, even from a distance.

Cut The Concrete

Set up the concrete saw to cut at a 50mm blade depth over the guideline.

When you start the cutting of concrete, don’t forget to spray the surface area around the blade with water to prevent the concrete dust from becoming airborne.

This will also prevent the concrete cutting blade from being overheated. However, you need to ensure that water is not sprayed on the electric saw.

Once you complete the line cut, you can adjust the blade in the cutting saw to 100mm and repeat the steps.

Break The Concrete

Once the cutting is done, position the jackhammer to break the concrete slabs. The weight and movement of the jackhammer will be enough to break the concrete.

Make sure you remove the first few broken pieces of concrete to make room for the next pieces to fall off.

If the concrete pieces are supported by wire mesh, you may have to use the bolt cutter to cut the mesh.

Remove The Concrete

You need thick gloves to manually load the broken concrete pieces into sacks that are easy to carry. Use the shovel to scoop the tiny fragments of concrete into the sack.

Make sure you follow all the safety procedures when removing concrete from the site.

Complete The Work

If you are still not satisfied with the depth of the cutting once you initially clear the area, you may use the jackhammer to level the area. Repeat the process until you are satisfied with the results.

If you are looking for a specialist concrete cutting company who uses only the best practices to get the job done right, then please call us at Megasaw on 1300 920 419 or contact us through our website. 

Concrete Recycling | MEGASAW
MegasawConcrete Removal

Understanding Concrete Recycling And Its Importance

For many decades, the construction industry has regarded concrete as one-and-done construction material, something that needs to be disposed of entirely once its purpose has been served to satisfaction. Fortunately, all thanks to advancements in technology, concrete no longer has to spend decades in the landfill. Businesses, as well as the average construction company, could benefit from concrete recycling in numerous ways.

The Recycling Process

All thanks to the excellent efficiency of the entire concrete removal process, the recycles aggregate tends to be of high quality. And many people often question the possibility of all that. The truth is that it can be achieved when you start right from scratch.

Concrete Removal Service

Aggregates of different sizes will be fed through a machine which is designed to minimize the payload to a smaller scale, that is, the larger chunks are crushed into smaller pieces. After that, the pieces of crushed concrete are then fed through another machine to get rid of light debris like wood. What you will get from this machine is some high-quality concrete.

The recycled concrete aggregate can be used in diverse ways, including being repurposed for construction, landscaping projects, and home improvement. It has also been found that although it is obtained from concrete scrap, recycled concrete aggregate is safe and durable like its natural aggregates.

The Importance of Concrete Recycling

 

1. Forget About the Tipping Fees

Tipping fees are usually collected once you take your items to the disposal centre and the prices are typically based on the volume or/and weight if your item. So, when you decide to recycle concrete, you will no longer have to worry about incurring extra tipping fees when you need to dispose of your construction materials at the waste treatment facility or landfill. This means that you will end up saving on construction costs.

2. Reduced Freight Charges

If you are a construction company or contracting business, then you are probably aware that obtaining high-quality aggregate could mean that you will have to pay a freight company a considerable amount of money just to get the aggregate to your construction site. While it is always good to consider the high-quality option, the truth is that you could end up spending a lot on a service that you might not need. And in most cases, the recycled concrete aggregate options are usually nearby so you will eventually pay little regarding freight charges.

3. Recycled Concrete is Usually Cheaper

By far and large, recycled concrete has been found to be a cheaper option when compared to the freshly-minted aggregate. Since it usually involves crushing concrete that was previously made, you will end up saving on material costs without having to compromise on quality.

4. Environmental Friendly

Another importance of using recycled concrete is that it is an eco-friendly construction material. The process of harvesting stones and later crushing them down needs natural resources as well as mechanical processing. When you recycle the unwanted concrete, you are essentially giving new life to the aggregate in a manner that involves minimal processing and leaves other natural materials untouched. Additionally, very little space is usually taken up by the non-biodegradable concrete in the landfills.

What Can the Recycled Concrete Be Used For?

Recycled Concrete Aggregate has proven to be an invaluable material and is currently being used in a wide range of applications. Some of the purposes recycled concrete is used for include:

Aggregate base course

This is arguably the most extensive application of recycled concrete, and it is usually used in the underlying layers which form the structural foundation for paving as well as the foundation for roadway pavements.

Soil stabilization

This usually involves the incorporation as well as blending of the recycled concrete aggregates into the marginal quality subgrade materials in order to enhance the load bearing capacity of the subgrade, hence bringing stability where soil stability is a problem.

Pipe bedding

Recycled concrete aggregates can also be used as a firm foundation or stable bed for the laying of underground utilities in addition to granular trend backfill.

Ready-mix concrete

This is usually a mix of water, sand, and cement. While this market is still in its young stages, some recyclers are currently trying to implement this re-use strategy. Moreover, recycled concrete could be used in new asphalt as a replacement for the virgin aggregate.

 

 

 

More Articles:

The Benefits Of Installing Concrete Pavers On Your Driveway

How to Find a Good Concrete Removal Service

 

 

finding concrete removal service
MegasawConcrete Removal

How to Find a Good Concrete Removal Service

finding concrete removal service

Finding a good concrete removal service is difficult, especially if it’s your first time to hire one. There are different factors in making a decision. Bottomline is that a good concrete removal service has a good reputation, is experienced and insured.

 

Finding Concrete Removal Service

The following are the best tips for finding a good concrete removal service.

 

Check References

Megasaw Testimonials

Concrete removal services are just like any other home improvement contractor. They should provide more than three references. Talk to their previous or current clients. But avoid relying on references alone. Companies of course will  give you a list of their best clients, so be cautious when going about it.

 

Portfolio

Megasaw Work

The best contractors have a gallery of their recent work. Check the portfolio of the ones that interest you so that you would have a clear idea of their services.

 

Experience

The best concrete removal services are reliable, providing high quality work consistently. A good service should have more than 5 years of experience. Experienced contractors provide excellent service and recommendations.

Be cautious if you choose a contractor with less experience. They may have a razor thin track record. Ultimately, you’ll risk wasting time and resources if they fall short of satisfactory results.

 

Reputation

megasaw van

Hire a concrete removal company that has a good reputation.  To be sure start by checking their image online through testimonials and reviews.

Pay special attention to poor reviews. It is from these that you can cull how the company responds to negative customer feedback and in improving their services.

You can also ask your friends if they have hired the company and ask them about their experience. to tell you their experience working with the company.

 

Insurance

If your chosen concrete removal service is not insured, you will be liable if a mishap occurs on the job. Ask the company about their insurance policy’s coverage. Find out how the policy protects you and your property from damages.

A professional company has worker’s compensation plan and general liability coverage. Contact the insurance company to verify the coverage and timeframe.

 

Written Estimates

Get more than five written estimates from different contractors. Make sure that each contractor checks out the job. Find out how long the job will take and if the weather conditions may affect the status of the job.

There are some contractors that may give you low estimates. Be careful about these contractors. Moreover, avoid ones that will not visit your house to check out the project. They might not give the right estimates.

Use these estimates to hire a contractor that you can afford. Higher cost is not necessarily a guarantee of better service.

On the other hand, there are contractors that don’t give away from contractors that do not provide written estimates.  Stay away from them. Stick with ones that will send someone to inspect your project.

 

Get Everything in Writing

Do not rely on verbal agreements. The details and additional promises of the project should be in writing.

The agreement should include; a warranty, the materials for the project, start and completion date, a description of the service and a payment schedule. Do not use a company that does not give a written contract.

With these tips, you’re sure to find a good concrete removal service.

 

RELATED ARTICLES:
Concrete Removal Techniques: Which Fits Your Needs
Preparations Tips in Removing Concrete
Tools and Tips for Removing Concrete Slab
Safety Precautions when Removing Concrete
Methods of Concrete Removal/Demolition
Understanding Concrete Recycling And Its Importance

removing concrete slab
MegasawConcrete Removal

Tools and Tips in Removing Concrete Slab

concrete slab removal

Breaking up concrete yourself might seem an impossible task, yet doing it yourself would save you a lot of money. You would not need to hire a removals company.

Begin with confidence that you don’t need any special skill to demolish and remove concrete slabs. All you need is some careful planning, the right tools, and some degree of caution.

Below is our guide to break up slabs into smaller pieces, cut through steel reinforcements and remove and dispose of the debris properly.

Concrete Removal and Demolition Service in Melbourne

Start by Evaluating Repair VS Complete Removal

It is best to remove concrete completely  when dealing with the following situations on your slab, sidewalk, patio, or driveway;

FROST HEAVE

This occurs when part of the concrete is pushed up because of frosting in colder regions.

MULTIPLE CRACKS

deep and wide cracks typically occur in extreme climatic conditions.

concrete cracks

SETTLED CONCRETE

Caused by improper preparation of the sub-grade.

In some cases though, repairing might be a great option. It entails less work and less expensive. The following are a few situations where repairing might be a wiser option;

THIN CRACKS

Small hairline cracks that don’t show any sign of settling can be easily repaired.

thin cracked

SUNKEN CONCRETE

Sunken parts of a concrete slab caused by heavy equipment that was placed on the slab can also be corrected through repair. 

Keep in mind that sometimes complete removal and replacement is better because of some persistent issues that still show up even after you repair the damage.

In this case, repair costs might start to pile. Hence it will be better to just remove and replace the concrete.

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Get the right tools

If you hire a contractor, they will definitely come with more sophisticated tools. Two common tools contractors use are the Bobcat and the jack hammer.

The Bobcat is equipped with a hydraulic or pneumatic breaker attachment that helps to “thrash” the concrete. The contractor is also likely to bring a roll-off dumpster to haul away the broken concrete

Tools you should be looking at

Having a contractor that has these tools means you don’t have to buy them. You can always rent them for the project.  Instead, you can  focus on two smaller but very effective tools: the sledge hammer and the jack hammer.

THE SLEDGE HAMMER

This is your primary tool to remove the concrete. A few measured blows using a 12 lb. sledge hammer can crack most concrete slabs easily.
sledge hammer

This  works particularly well on narrow concrete slabs measuring four inches or less in thickness. You should be able to find one online for not more than $50.

THE JACHAMMER

Jackhammers are pneumatic hammers, meaning they are operated by air. They are heavier than sledge hammers, weighing about 90 lbs. But they are also more effective on thicker slabs.

concrete removal

Since jackhammers are also more expensive, you should consider renting rather than buying one outright.

Rental jackhammers come with an assortment of bits. You only need the chisel-point bit. It’s pointed head concentrates the hammer’s force on a small area, cracking the concrete faster than wider bits.

Additionally, don’t try to drill it into large pieces of concrete. Otherwise, the jackhammer will literally stick in the concrete. It will take a lot of time getting it out.

The idea is to move it no more than 2-3 inches into the slab and have a helper pry up with a long bar as you tear up the concrete.

Dealing with steel meshes and rebar

Many slabs contain a steel mesh reinforcement for it not to crack. These meshes can double or even triple the time it would take to crush the concrete slab.

This is why you should work on smaller pieces rather than big concrete pieces. On the smaller sections, you can cut the mesh with a bolt cutter.

For concrete slabs that contain rebar, use a reciprocating saw and metal blade or an angle grinder and metal cut-off wheel. 

A few more tips…

Plan for disposal

Concrete can’t go into a trash can. You’ll need a larger, stronger equipment to carry the pieces. Some concrete recycles usually pick it for free or charge a small fee, though you’re likely to pay additional fees if the concrete contains steel or mesh.
concrete removal

As for hauling, you can always count on a sturdy wheelbarrow to get you through. For this, use heavy-duty wheelbarrows or a powered one. Smaller ones would easily give in to the weight.

concrete removal

You’ll need more than one pair of hands

You need help with the lifting. Ideally, have a duo break up the concrete and two to four others haul the rubble away. If you can have more people, that’s better.

Safety first

Wear protective clothing to prevent rubble projectiles from cutting your skin and wear protective goggles. Also protect your ears with noise cancelling headphones.

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Slab removal can save you money!

If you’re hesitant to remove the concrete on your own,  think of the potential savings.

Depending on where you live, basic removal can cost anywhere from $400 to $600 for a 200 square foot slab of recyclable concrete. The price usually goes up when it’s non-recyclable concrete.

A typical two-car concrete driveway costs between $1,500 and $2,500 to remove and a concrete foundation generally costs up to $5,000 to remove. And, that’s before you include disposal costs which can be between $100 and $500 depending on project.

If you need special equipment for the job, you may have to spend a few more hundred dollars. So, by the time you have even a basic slab removed by a contractor, you could end up spending more than $2,000.

If you do the job on your own, you can save a large chunk of that money, possibly up to $1,000 or more.

 

Final Thoughts

We at Megasaw are always willing to lend a helping hand. With decades of experience in the industry, we have helped many Australians in concrete removal and concrete cutting.

Our customer-focused staff and wide array of tools are exactly what you need to accomplish the job without any hassle. Contact us today and let’s see where we can chip in.

 

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concrete removal techniques
MegasawConcrete Removal

Concrete Removal Techniques: Which Fits Your Needs?

Concrete Removal Techniques

People usually choose to remove concrete when it is damaged and needs to be replaced. But this should be done after all options to repair has been considered. Plus, look at the total cost – now and in the long run.

Think of just repairing the concrete, especially If it only has thin cracks   if it sunk. Tiny cracks can simply be filled up and concealed.

It is, however, beyond repair if you notice the following:

  • There are uneven, wide and deep cracks.

  • Incidences of frost heave. Sections of the concrete are pushed up by the ice that appears in frosty climates.

  • Settled concrete. This is a result of improper preparation of the sub-grade.

Further, you can consider concrete removal if you are changing your property layout, or  there are ongoing infrastructure improvements such as road widening in your locality.

 

Techniques in concrete removal

All concrete removal techniques are designed to reduce air and noise pollution. These include:   

 

  1. Dismantling

This is the most basic method.  When a homeowner uses a jackhammer or sledge hammer to demolish concrete and then haul away the rubble, this is dismantling.

jackhammer.png

In contrast, professional contractors however use concrete cutting tools and a crane to remove the rubble.

Dismantling has little noise, much reduced dust and produce limited damage to structures within the environment.

That’s why renowned Melbourne-based concrete cutting, drilling and sawing contractor Megasaw favours dismantling.

RELATED: Preparations in Removing Concrete

 

Here are some areas where you may utilise concrete saw cutting or robotic hammering.

Wire sawing – needed to remove the wire mesh used to reinforce concrete.

Wall sawing – most appropriate when you are renovating an office or  a house. This is done using the base of a concrete saw.

Flat drilling – suitable for cutting concrete from floors, pavements, bridge platforms or loading docks. A slab sawing attachment is used to make precise cuts by a series of up-and-down movements. This is designed to avoid broken cabling pipes, and other embedded material.

 

  1. Hydro demolition

Water can be used to cut concrete using a variety of devices – mainly robotic demolition equipment and handheld guns.

hydro_demolition.jpg

This technique is more appropriate to use in cities where water is readily available and where vibration from concrete removal is a concern.

Just don’t forget to check and comply with  local regulations regarding water and slurry disposal before you start the process.

 

  1. Pressure bursting

This is most appropriate for creating cracks in precise sections where concrete is unneeded. To remove the concrete, drill holes and apply expensive grout is applied to the drilled holes.  

Then leave the concrete for a few hours.

It will crack. The concrete can then be removed in portions.

 

Conclusion

Each technique is suitable for a particular area but note that other techniques may also be applicable. To get the best results, consider enlisting the services of a seasoned service provider like Megasaw Concrete Removal Service.

 

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concrete removal preparations
MegasawConcrete Removal

Preparations in Removing Concrete

Concrete removal preparations

Concrete Removal Health Risks

Concrete demolition, removal and disposal pose health and environmental risk to you and the neighbourhood.

For concrete removal, the risks include:

 

  1. IRRITATION OF AIRWAYS

This is caused by the dust (airborne particles) produced during concrete removal.

An irritation can exacerbate conditions such as asthma and other disorders of the airways.

 

  1. HISTOPLASMOSIS

This is a lesser-known infectious disease that is contracted when fungus spores are inhaled. These spores are commonly found in bird droppings and bat excrement.

Histoplasmosis

Concrete demolition work is the trigger that sends the fungus into the air. Inhaling the fungus causes a variety of symptoms, though it primarily affects the lungs.

Histoplasmosis resembles tuberculosis. The disease gets worse over time and will affect other organs. If untreated, this disease can be fatal.

 

  1. SILICOSIS

Concrete contains silica.

Silicosis

Crystalline silica is quite toxic and causes silicosis, an irreversible and disabling lung condition.  

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Machine Used in Concrete Removal

Professional concrete removal services typically use hydraulic, petrol and electric driven hand saws and road saws to cut sections of the concrete into smaller manageable blocks.

bobcat concrete removalThe concrete blocks can then be removed by a bobcat,  a forklift or simply by hand. They are removed from the site in concrete recycle bins. Slurry produced from the removal can be taken off by using a suitable slurry extraction vacuum.

Concrete removal can also be a do-it-yourself kind of work. There are a number of tools you can use to remove concrete on your own. Here are some of them.

 

  • SLEDGEHAMMER

This would be your concrete demolition weapon.

sledgehammer

Decide whether your sledgehammer will be enough or whether you’ll need a jackhammer by experimenting with a few whacks a few days before your full-scale demolition starts.

If the slab comes out fairly easily then the sledgehammer will be your tool. Otherwise you’ll need to rent a jackhammer.

 

  • JACKHAMMER

This should be much easier since it uses electricity.

When removing concrete, you would only need the bit with chisel-point tip. This bit makes it easy because it concentrates the jackhammer’s force to a single point, making the concrete crack more quickly.

jackhammer

Caveat: Do not try to crack off large pieces, lest the jackhammer get stuck in the slab. It is therefore best to crack the concrete gradually take small bites with the jackhammer to crack the concrete with ease.

 

  • BOLT CUTTER

Slabs typically contain reinforcing steel mesh used to resist cracking,  a big headache at the time of concrete removal.

bolt cutter

For this, crack smaller sections of the concrete and snip the wire with a bolt cutter.

 

Preparations before concrete removal

Anyone can remove concrete, provided he/she is prepared and have the right tools.

Most health risks are brought by dust. But this can be easily countered by wearing the right protective gear.

Here’s what you need to be properly equipped:

  • A heavy duty wheelbarrow

  • 12-lb sledgehammer

  • Pry bar measuring 5 to 6 feet long

  • Bolt cutter

  • A mattock

  • A jackhammer (optional)

The proper gear is composed of the following:

  • A pair of leather gloves

  • Safety glasses

  • Face shield

  • Hearing protection

  • Safety boots

concrete safety gear

You may also need a crew to help you. You can have at least two people break up the concrete while the rest haul away the rubble.

After gathering the necessary equipment and manpower, look to contain flying shrapnel.

One way to do this is by rolling a thick polyethylene over the sidewalk or patio. This will cover the concrete while you hammer it.

Finally, make your disposal plan one week before removing the concrete. One option is enlisting the services of concrete recyclers by searching for ‘recycling services’ on the Internet.

Alternatively, you can rent a trash container for the same. You can find them in the yellow pages.

Provide the waste haulers with the dimensions and thickness of the patio to be removed and let them determine the right container size for your job on their own.

Now that you’re ready, here are some points to note when removing the concrete.

The concrete chunks will typically remain locked together even after breaking them. This will make the surrounding concrete more difficult to break.

Clearing the rubble away after breaking up about 2 to 3 feet portions will make the work much easier.

Above all, ensure you wear a complete protective gear to protect your feet, hands, nostrils, hearing, head and face or eyes from any form of injury. With the right gear, you won’t have to worry about the dangers of demolished concrete.

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When a DIY isn’t an option…

If instead of doing it yourself, choose to hire a company that has a proven record in concrete removal like Megasaw.

 

Why Megasaw Concrete Removal Service?

The company has the equipment, expertise and most importantly the experience to handle any concrete cutting and removal project.

More importantly, MegaSaw technicians take additional precautions to protect the surrounding structures from damage during the concrete demolishing and removal process.

Read more of concrete removal service we offered.

 

Conclusion

Whether you do it yourself or hire a professional concrete removal service, adequate preparation is necessary to ensure the best results and minimal health and environmental harm during concrete removal.

 

warning signs on concrete demolition jobs
MegasawConcrete Removal

How Demolition Machines Offer Improved Safety in Concrete Demolition Jobs

warning signs on concrete demolition jobs

The question of safety is a primary factor for any contractor when planning a concrete demolition job; as it is regarded as being amongst the most dangerous of building operations. Defects or neglect in the initial planning process could result in various injuries to workers or even fatalities. In the past, human error played a significant role in the efficiency of a demolition job, which has in modern times, been nullified by the ever increasing use of demolition machines. The methods and machinery used in a demolition job will vary depending on the site location, the form of the building material and the purpose of the demolition.

A traditional method of demolition is known as the “high reach arm” which is generally employed in the form of a base machine; for example, an excavator, engine, tank, counterweights and a demolition arm. This latter piece of equipment consists of three sections or a telescopic boom and primary tool, such as a crusher, hammer or shears, attached to the base machine. The threshold for defining a high reach demolition is when it reaches a height of more than 20 metres.

Safety in machinery

The inherent safety of demolition machinery is demonstrated by high reach machines having the capability of being equipped with different tools, to meet the demolition needs of various structures. It is a method used on reinforced concrete, steel, masonry and various mixed material content structures, with additional components employed for secondary operations such as material crunching. Several factors influence using this method, including the height of the structure to be demolished, conditions on the site and the structure itself.

Working in the construction and demolition industry involves working in an environment and atmosphere of falling dust, concrete and metal. Therefore, to ensure the safety of operators demolition machinery, such as excavators, are manufactured with various special features. They can include:

  • Front-guards, designed to protect the cabin from falling debris
  • Undercarriage guards that serve the purpose of preventing debris being caught in the crawler

It is the nature of this industry that machines and equipment must be manufactured to an extreme toughness to cope with their task of breaking solidly-built structures, safely and efficiently.

Another traditional and one of the most commonly used methods for certain types of structural demolition is the ball and crane. The operation involves the use of a wrecking ball that can weigh up to 13,500 pounds (6123.497 kilograms) and is used in demolishing concrete and masonry. It is a process whereby the ball is either dropped on, or swung into the structure. The sizes of structures that can be demolished with this method are limited by crane size, working area and various safety factors including the proximity to power lines.

Operator skills and expertise

The nature of this operation calls for the expertise of only highly skilled and experienced crane operators, with additional work needed for the removal of rebar or reo in concrete structures. This is an operation requiring high operational skills and stringent safety precautions, with the control exercised in the swing of the ball being a critical issue. Should the ball miss its determined target then it could cause tipping or overloading of the crane. For any demolition contractor, the safety factor is an inherent part of any operation. From ensuring their machines and equipment are maintained in the best condition, to the employment of only the most qualified and highly-skilled operators, it is a complex operation. The enforcement of safety precautions takes into account ongoing operator training to maintain maximum competency.

Job dictates machinery used

While the demolishing of relatively small buildings and structures is generally a routine operation, which does not require large machinery, any equipment and machines that are used will also be subject to stipulated regulations by local authorities, including those related to safety. In the case of larger buildings and structures that require more extensive machinery and equipment, the method of demolition used will depend on the structure, as will the required safety precautions and features applied. The type of machinery used will also relate to the project personnel and any passing traffic and pedestrians.

The usual machinery and equipment employed in average demolition projects, includes:

  • Bobcats
  • Excavators
  • Hydraulic equipment
  • Mechanical hammers and grabs.
  • Prime movers
  • Semi Tippers and Tip Trucks

Customers benefit from dealing with a construction and demolition company that is well established and boasts an excellent reputation. Confidence is created in the ability of a company and a proven wealth of demolition expertise gained from past projects as well as a strong safety record. It is also essential the company has an in-depth knowledge of local authority regulations, codes, and governing laws. These are all indications that a contractor is conscious of their community responsivities and will conform to, or even exceed, required safety precautions.

warning sign on a concrete demolition site
MegasawConcrete Cutting, Concrete Removal

Protecting Passersby During Concrete Cutting and Demolition Work

warning sign on a concrete demolition site

As reliable and established contractors we are always concerned about the wellbeing of our personnel, the environment and the importance of safety to those in the vicinity of any concrete cutting or demolition work. This is achieved by employing qualified artisans and providing adequate training for them before allocating tasks on job sites. A further aspect is that training must be ongoing, with efficient supervision in every project. Our philosophy is that with highly, efficient personnel, greater and more effective focus will be given to the overall protection and personal safety, thereby minimising risks to passersby as well as occupational hazards. It has always been part of our social responsibility to adhere to proper procedures in waste management and the environmental procedures we carry out.

As concrete cutting and demolition contractors, we are regarded as specialists in the art of destruction. Despite the seeming ease of this occupation to a layperson, it is in fact a challenging expertise that requires careful planning, in order to cut concrete and destroy structures with inherent safety for everyone and the environment. By selecting the appropriate cutting and demolition method, we are able to safely demolish a structure, with trained efficiency and the least amount of disruption to communities.

Traditional and other demolition processes

The crane and wrecking ball is recognised as one of the oldest and most commonly used methods for building demolition, or concrete cutting. We are able to isolate a particular section of a structure, for lowering to ground level for further breaking up or transportation to a dump site. Controlled demolition jobs are completed with the maximum of safety and can generally be achieved with standard concrete sawing techniques and equipment. Cutting concrete with a water jet helps to:

  • Minimise the amount of dust in the atmosphere
  • Reduce vibration
  • Clean up the site with the addition of a water-catching system during the jetting procedure

As and when necessary, blasting methods using explosives are employed which use rapidly expanding gases restrained in boreholes, for the purpose of producing controlled fractures in concrete for easy removal of the material. In general, the blasting methods we use are efficient and provide a safe and secure means of removing significant volumes of distressed or deteriorated concrete materials. Because of the inherent dangers in the handling and use of explosives, blasting is regarded as the most dangerous. It is therefore subject to more stringent controls than other methods of demolition.

Safety is the primary consideration

Whatever process of demolition is used, or size of the job, the safety of those working and passersby within the vicinity of the project, is treated as a matter of primary importance. Among the various key considerations taken into account are:

  • Any potential effects to community services
  • Protecting electricity, gas facilities, water and any other services attached to a structure
  • Appropriately capping facilities as and when necessary
  • Electricity or other lines required to help with the demolition process must be approved heavy-duty materials and be kept adequately and safely protected along an obvious and recognised route
  • Within the structure, the movements of people are catered for with designated routes for example: by way of agreed doorways and stairways; or specifically designed walkways
  • The removal of debris is also planned and catered for, with all horizontal and vertical openings completely blocked, for the purpose of protection from the potential of any falling materials

In any type of business operation, it is generally recognised that the question of safety is the first priority, irrespective of it being a concrete cutting and demolition site, or a normal retail outlet. The safety and wellbeing of personnel and passersby within the vicinity are entitled to conduct their everyday lives in a safe environment which means: there is no allowance made by us for even slight errors.

Equipment criteria

The equipment used for concrete cutting, shaping and demolishing are extremely large and powerful and it must be regarded as critical that all persons in their vicinity are provided with the best available safety and protection from any possible occurrences. Therefore, to meet the demands of communities in which we operate and those of our clients, we have established and proven strategies in place for the provision of a safe and environmentally-friendly concrete cutting and demolition work site operation.

We consider it essential that anyone working with concrete cutting, or even remotely associated with any aspect of demolition work, is made aware of the potential health hazards and take the necessary precautions to avoid serious risks to their health. In the case of passersby, we believe in taking every possible precaution to ensure their safety and protect them to the best of our ability.

save on concrete removal
MegasawConcrete Removal

Saving Money on Concrete Removal

removing concrete

Jobs like having to break up and remove segments of concrete is a huge task but getting rid of the concrete is another problem.

The first thing that has to be determined before any concrete removal job is taken on is determining if there is a need to break up and remove the concrete. It has to be determined if demolishing the concrete is the most economical way to go or is a concrete repair or resurfacing a better alternative. In most cases if the concrete is deeply cracked or has begun to sink then concrete removal and replacement is usually the only option.

Selecting the right equipment

It all begins with using the right demolition tools for the job as each concrete removal job has its own demands. There are many different types of tools that can be used for this job such as a chipping hammer which are handheld concrete breakers ideal for concrete removal that is vertical or in the overhead services.

A demolition hammer is another tool that may be required which is different from Rotary hammers. In this case this particular tool can deliver a hammering action to help break up the concrete for easier removal. The decision will have to be made between using a demolition hammer or a rotary hammer.

Another tool that may be required is the diamond wire saw which is sometimes more efficient than the circular saws. The one advantage of this particular saw is its ability to cut concrete no matter how thick it may be.

There is also the possibility that a hydraulic concrete crusher may be the best option. The advantage of using this tool is that it will break the concrete down into smaller pieces which are easier to handle and dispose of.

There are many different tools that can be used for wall sawing or concrete removal, and it is important that the right tools are chosen. It is also equally important that the individual operating the tools has the expertise that is needed. We recommend that only those that have been properly trained carries out the work in order to get the job done correctly and to keep safety as the priority.

No doubt purchasing any of these tools can be very expensive and adds to the inventory of the businesses that may require the need of them. Not only is there a cost involved in the purchase, but also in the storing, maintaining and repairing of the tools. Many commercial entities that have a need for concrete removal find that farming the job out to professionals like ourselves, that specialise in concrete demolition and removal is a far more economical way of getting the job completed.

save on concrete removal

Turn to the professionals

While many commercial entities have a need for commercial demolition and concrete removal there are many home owners that often find they have a need for concrete removal as well. A good example of this can be if their driveway needs replacing. We recommend that those who need to remove the concrete from their driveway get the opinion of professionals such as ourselves to determine the amount of work and the feasibility of this type of project.

What most people don’t realise is that concrete will always eventually crack and at some point in time will need to be replaced. Most often individuals who like to work on their home themselves feel they can attack this type of job alone but often run into many difficulties. This is one of the reasons that we highly recommend using professionals such as ourselves to complete this type of significant task. In the end, it can save a lot of money by preventing the many errors and problems that can take occur with concrete removal.

The size of the job is going to dictate whether you need a professional to do this for you. If you are only looking at a small home project such as removing an old walkway then with the right instruction and tools you most likely can do this yourself. It should not be thought that because you are capable of doing the small jobs, however, that you have developed the expertise for taking on the bigger ones like replacing your driveway or if you are replacing or demolishing concrete walls.

Safety precautions

If you have to do any digging then it’s really important to check there are no wires, pipes or cables that may be underground. You need to call the necessary people to ensure this.

Planning a concrete removal project also requires you to look at the proper measurements required for the job. It is most disappointing to build your patio and then once completed wish you had made it bigger. If you are in doubt, we highly recommended that you speak to professionals such as ourselves concerning your project so that we can advise you as to your best options.

Safety is a big factor when working with concrete whether you are demolishing it or installing it. We highly recommend that you are aware of these potential dangers and that you also use the proper equipment for your job at hand, as well as wearing the proper safety equipment.

Be sure to call us as we would be most happy to discuss your concrete job with you and how we may be able to assist. If there are ways that you can do this yourself safely and cost effectively we will certainly tell you. However, if it is a job that we feel you require the help of professionals then we can be at your service.

rescuers on earthquake rubble
MegasawConcrete Cutting, Concrete Removal

Why Concrete Cutting Solutions Are Key to Earthquake Responses

rescuers on earthquake rubble

Over the centuries, thousands of natural disasters have left their scars on communities. Of the types of disasters, the earthquake remains one of the most destructive, especially in urban areas. As a result, concrete cutting solutions are a core response feature.

There can be no doubt about the degree of destruction caused by an earthquake. This destruction is most evident in urban areas, where buildings, roadways and pavements can be both seriously damaged and completely destroyed.

In Nepal in 2015, over 9,000 people were killed in one of the strongest earthquakes in recent decades, measuring 7.8 magnitude. The capital Kathmandu saw historic pagodas, churches and temples collapse, as well as multi-level office buildings in downtown areas. Secondary effects, like delayed building collapses, were a constant concern.

The 2011 Christchurch earthquake in New Zealand claimed 185 lives, and its impact on structures in the city was severe. The six-storey Canterbury Television building and the four-storey Payne Gould Guinness House were amongst the most prominent buildings to be destroyed – both built using reinforced concrete.

Why are concrete cutting solutions so important?

The only safe way to deal with such urban destruction is to break down and remove the ruins and rubble. Initial efforts are done in the immediate aftermath of the earthquake to improve safety conditions while rescue operations are in full swing. But afterward, the work continues to clear areas to allow reconstruction to begin.

Often, buildings succumb to the impact of an earthquake in the weeks, months and even years, following the disaster requiring concrete cutting solutions as part of controlled demolition strategies. For example, in the period from the 2010 Canterbury earthquake to February 2015, some 1,240 buildings were demolished, including the Hotel Grand Chancellor and the 21-storey PricewaterhouseCoopers building.

But what can concrete cutting services actually do as part of an earthquake response strategy? There are three main tasks concrete cutters are ideally suited to:

1. Creating space to operate In

With the level of destruction that typically follows a strong earthquake, it can be very difficult for rescue teams to access the disaster area. Fallen buildings create mountains of rubble, impeding essential machinery like cranes and diggers from moving to the spots where they are needed. Concrete cutting solutions address such problems, cutting pathways through the debris, allowing passage through. There may also be issues with narrow locations, where the arm of a crane does not have sufficient room to rotate. Cutters can also be used to widen the space by removing segments of ruined walls or floors. Cranes can then fully rotate to lift and safely remove rubble and other debris.

2. Increasing Safety for Rescue Teams

By definition, rubble is never secure. But rescue teams often have to work on top of mounds of broken bricks, concrete slabs, pillars and girders. In some cases, the remaining structures in the devastated area can be dangerously close to total collapse, and semi-collapsed floors high above the rescue operation may teeter on the verge of complete collapse. That means they have to work in conditions that are unsafe. Concrete cutting solutions also address this threat, allowing rescue teams to cut away any hazardous elements on the scene, like the shattered end of a concrete floor. In this way, the area can be stabilised, making it easier for rescue crews to concentrate on the job at hand.

3. Gaining access to survivors

A third reason for having concrete cutters on hand is they can cut through debris to get to trapped survivors. Cutting through this concrete – in a careful and strategically secure way – creates a path for rescue crews to rescue these people and lift them to safety. Where victims are concerned, it allows them to be recovered and returned to their loved ones for burial.

Types of Concrete Cutters used

  • Hand Saws – The most practical concrete cutting saw, and therefore the most essential for concrete cutting solutions, is the hand saw. They can typically cut at depths of around 150 mm – so through floors and walls. Because it is hand-held and highly versatile, it can be used on almost any gradient and in the tightest of corners.
  • Road Saws – Road Saws is part and parcel of any concrete cutting kit dealing with paved walkways, pedestrian bridges and passageways. It is bulky, so is limited in regards to where it can be used. But its power when cutting through asphalt and concrete surfaces makes it ideal for removing damaged sections of roadway, and cutting through suspended concrete slabs.
  • Wire Saws –Concrete wire saws are powerful machines that can cut through massive concrete blocks, successfully separating large sectors of concrete and steel that may be hampering rescue operations. Using a highly effective diamond wire it can cut through thick broken slabs such as those found on modern bridges, or through thick concrete pillars. But it can be used on semi-collapsed buildings too. Perhaps its biggest advantage is that is can be used effectively in confined spaces.

Concrete Cutting Solutions from the experts

Clearly, concrete cutting is a vital service in any emergency response strategy after an earthquake. With the degree of structural damage to buildings, and the tight confines of many locations, concrete cutting saws have genuine uses at the scene. But it’s not something anyone can do.

Here at MegaSaw, we have been providing concrete cutting solutions to clients throughout Melbourne for almost 40 years. We know from our own experience that professional service providers are the only safe option when handling a location covered by rubble and damaged structures.

For more on our concrete cutting services, contact us either via email at info@megasaw.com.au or by calling one of our team at 1300-920-419.

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