What is demolition?
Demolition is a precise process and may be done either manually or mechanically using large hydraulic equipment: elevating work platforms, excavators bulldozers or cranes. Large structures like tower blocks require High-Rise demolition equipment know as a High-Reach machines.
Rotational hydraulic shears and rock-beakers attached to specialist excavators are also used to cut or break through wood, cut steel and crush concrete.
Both demolition and deconstruction involve the pulling down of a building or structure and are the reverse of the construction process. Whilst the two processes are similar in effect deconstruction preserves various elements of the structure, such as wood, and bricks, for reuse for another building or structure.
The process reduces the structure to a rubble which is either treated as waste or, in some cases, used as hard core for other construction projects.
If you have a large building that requires demolishing, you cannot rely solely on manual demolition to get the project completed. There is only so much that a team of demolition contractors with sledgehammers can do when confronted with a high-rise building. And the old crane and ball method takes a lot of time and effort.
Health and Safety is also a huge importance. How do you demolish a huge building without placing everybody nearby at possible significant risk?
We are a leading controlled demolition contractor offering controlled demolition services throughout the United Kingdom. Leveraging decades of experience in the sector, our team will help you to demolish buildings safely and leave the site ready for whatever new projects that you have in mind.
What is deconstruction demolition?
Deconstruction is a relatively new approach that seeks to minimise the quantity of waste that is sent to landfill sites. The process involves the careful removal of materials and segregating them either for reuse or recycling.
A well-designed deconstruction project can result in less than 20% of the structure and its contents being transported to landfill fees and cost saving in refused materials can make it a cost-effective process. There are two forms of demolition:
- Piecemeal- where the demolition is conducted using hand and mechanical tools such as pneumatic drills, cranes and demolition balls, hydraulic pusher arms or heavy duty grabs; and
- Deliberate controlled collapse – where explosives are used to demolish the structure. This technique should only be used by trained, specialist competent persons. Pre-weakening of the structure, by the removal of several load-bearing elements and their replacement with temporary props, normally precedes the deliberate collapse. This is the most economic form of demolition but it is the most hazardous and everyone must be at a safe significant distance at the time of the collapse.
Manual demolition works well to preserve other portions of the structure that a property owner wants to preserve or nearby buildings. Heavy demolition equipment may also bring too much impact on the area of the demolition, such as vibration, shock, and noise. Manual dismantling is very helpful to minimise the effects of these disruptions while making sure that a structure is taken down efficiently.
To carry out manual demolition works, various tools and equipment can be used such as:
- Pneumatic hammers
- Wire and winch systems
- Hydraulic wedges
- A wire saw cutting machine
- Oxy-acetylene torch
- Mini-loaders and mini-excavators
Whether it is mechanical or manual demolition, there should always be proper measures in place to prevent sudden movement of the remaining structures before the completion of a demolition project.
People demolish structures for various reasons. It could be because of the following reasons:
- An existing damage that needs to be repaired
- An additional space needed for the business or residence
- An improvement or renovation of an old structure.
A common denominator for most demolition works is to ensure the safety of the dwellers.
Depending on the type of structure and the needed job required, the dismantling of a structure uses various methods. The procedure of demolition also varies with the size of the building and the availability of equipment.
Among the methods, manual demolition is found to be most applicable for most sites, especially for areas located in the urban zone. The safety of the demolition process would greatly depend on the type of procedure used. This is the main reason why all demolition jobs require careful planning and execution.
You do not need explosives for every demolition job. Most people assume that for a demolition to be a demolition there is a need for a kaboom. It does not have to be that way. As a leading demolition contractor in the United Kingdom we are experts of non-explosive concrete demolition.
Non-explosive concrete demolition is a process that relies on chemical agents to safety remove concrete and rock during the demolition process.
This is a viable alternative to explosives especially in situations where there is a high risk of injury posed by explosives or where vibrations caused by explosives could damage nearby structures.