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The building demolition process begins with planning. Demolition contractors first survey the structure and study their materials, construction methods and current physical conditions. After the survey, all hazardous materials will be eliminated from the area. Utilities previously used will also be disconnected. When it is deemed safe, the demolition plan will now be created. Details such as demolition method, equipment needed, and clean-up will be outlined. Following the planning is the securing of permits. Areas near the site will be blocked, and workers are advised of the hazards.

In preparing a building for demolition, there are three critical factors to consider. First is the structure. How big is the building? For small structures, it can be prepared for demolition in less than a week. But for multiple, complex, and bigger structures, it can take up to six months. The second factor to consider is where the structure is situated. If it’s in the city, it will take more time than if it was in a rural area. The final factor to consider is what the building was for before demolition. This is to check for potential hazards like gas, chemicals and asbestos.

There are four common types of demolition – implosion, high reach arm, wrecking ball and selective demolition.

1. Implosion: Implosion involves explosives that will knock out a building’s primary vertical supports. This will cause the building to collapse from the inside out. This is usually used for large structures in urban areas, but because of its explosive nature, implosions are used only 1% or less in structural demolition projects.

2. High reach arm: This method of demolition is usually for structures of more than about 20 metres high. It uses an excavator that is fitted with a long demolition arm that consists of three sections. Demolition tools are attached to the end of the arm and will be used in disassembling the building from top to bottom.

3. Wrecking ball: Other than implosion, wrecking ball is also a well-known method for structural demolition. Weighing up to 5 tonnes, this massive steel ball is suspended from a crane to be swung into a building. With gravity, inertia and its weight, it does an excellent job of bringing a building down. But because it causes a lot of debris, dust and other safety hazards, this method is not often used today.

4. Selective demolition: Selective demolition is an eco-friendly method that allows the reuse and recycling of the building’s materials for other projects. It uses safe and cost-effective procedures that will enable the recovery of reusable and recyclable materials. Since this requires selective interior and exterior demolition, it also requires more time and labour than the other methods.

To determine the building demolition cost, a lot of factors need to be taken into account including the size and material of the structure; its location; hazardous materials onsite; labour costs and more. Therefore, to demolish a building, it can cost from anywhere between $10,000 - $40,000 or more. It is also recommended that you contact a building demolition company for a more accurate estimate of costs involved with building demolition.

To find the best building demolition services in Australia, iseekplant offers a comprehensive platform that connects you with a wide range of experienced demolition contractors. By using iseekplant, you can easily search for and compare different service providers based on their expertise, equipment, and past project performance.

This access allows you to select a demolition service that best meets the specific needs of your project, ensuring efficient, safe, and compliant demolition practices. The platform also provides user reviews and ratings, helping you make an informed decision based on the experiences of others. With iseekplant, you have a nationwide network of quality building demolition companies operating in all Australian capital cities from Brisbane to Sydney, Canberra, Melbourne to Darwin, Perth and Adelaide. We also offer building demolition hire solutions in all major towns and cities from Townsville down to the Sunshine Coast, Gold Coast, Newcastle and Geelong.

iseekplant has a nationwide network of demolition contractors available for your demolition projects. Use our get a quote tool to easily get a quote for building demolition services in your area. You can also give us a call on 1300 691 912 or email us at projects@iseekplant.com.au.

The world’s Top 5 Biggest Controlled Demolition Projects: Ocean Tower (South Padre Island, United States), Trojan Nuclear Power Plant (Columbia County, United States), Morandi Bridge (Genoa, Italy), AfE Tower (Frankfurt, Germany), Yunong Village (Shenzhen, China).

Read our blog for details about these amazing projects.

Yes, prior approval is generally required for any demolition project. The process of obtaining approval involves submitting detailed plans and justifications for the demolition to local authorities. This includes ensuring compliance with local zoning laws, building codes, and sometimes environmental regulations.

It’s essential to check with your local council or regulatory body to understand specific requirements, as these can vary significantly depending on the location and the nature of the building. Failure to obtain the necessary permits can result in legal penalties, including fines and enforced delays in project completion.

Several key preparations must be in place before commencing a demolition project:

1. Obtain Necessary Permits: Ensure all required local and state permits are acquired.
2. Safety Plan: Develop a comprehensive safety plan addressing all potential hazards to workers and the public.
3. Utility Disconnections: Securely disconnect all utilities such as water, gas, and electricity to prevent accidents.
4. Asbestos and Hazardous Material Assessment: Conduct a thorough inspection for asbestos and other hazardous materials. If present, a specialised remediation plan must be implemented.
5. Neighbour Notification: Inform adjacent property owners and occupants about the demolition schedule and safety measures.

These steps are crucial for ensuring the safety, legality, and efficiency of the demolition process.

After a building is demolished, several follow-up actions are taken to manage the site and materials:

• Debris Removal: All demolition debris is collected and removed from the site. This involves sorting materials for recycling, reuse, or disposal.
• Site Clearance: The site is cleared and levelled, making it safe for future use or construction. This may involve additional grading and excavation.
• Recycling and Waste Management: Recyclable materials such as metal, concrete, and wood are processed and sent to recycling facilities. Non-recyclable materials are disposed of in accordance with environmental regulations.
• Final Inspection: A final inspection by local authorities may be required to ensure all debris has been properly managed and that the site is safe. *** Preparation for New Construction**: If the site is destined for new construction, further preparations, such as soil testing and foundation work, may begin.

These steps are essential for the responsible and efficient management of a demolition site.

The time it takes to demolish a large building can vary widely depending on several factors:

• Size and Complexity of the Building: Larger and more complex structures require more time to demolish.
• Method of Demolition: Different methods (e.g., implosion, high-reach excavator, wrecking ball) can impact the timeline.
• Regulatory Compliance: Time for inspections and compliance with regulations can extend the schedule.
• Weather Conditions: Adverse weather can delay demolition activities.
• Preparation and Cleanup: Time for preparation before demolition and cleanup afterward also contributes to the overall duration.

On average, demolishing a large building can take anywhere from a few weeks to several months. Planning with a detailed timeline that considers all these aspects is crucial for managing expectations and coordinating subsequent activities.

The easiest method for demolishing a building can vary based on the structure's size and location, but the crane and wrecking ball technique remains one of the most straightforward and historically popular methods. This method involves a crane using a large steel ball, which can weigh up to several tonnes, to either drop onto or swing through parts of the building to break the structure apart.

While effective for certain types of structures, modern techniques such as controlled demolition using explosives or high-reach excavators are often preferred for their precision and reduced impact on surrounding areas. These advanced methods provide greater control over the demolition process, ensuring safety and minimizing unwanted damage. Regardless of the method chosen, it is crucial to assess the specific conditions of each project to determine the most appropriate demolition approach.