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  • Home
  • About
  • Contact
  • Blog
  • Store
  • Calculator Apps
    • General Construction Calculators >
      • Running Measurement calculator
      • Spacing Calculations (Premium Content)
  • Premium Content pages
  • Construct Pitched Roof
    • Roof Terms
    • Roof Calculations >
      • Roof Bevels >
        • Roof Bevel Generator (Premium content)
      • Roof Quantities
      • Rafter lengths >
        • Rafter Length Calculator (Premium content)
  • Construct Eaves
    • Eave Types
    • Eave Construction methods >
      • Eave Components
    • Eave Calculations >
      • Eave Quantities >
        • Storm Mould Calculations
        • Fascia Calculations (Premium Content)
        • Eave Bearer Calculation (Premium Content)
        • Soffit Sheet Calculation (Premium Content)
      • Eave Drop Off >
        • Eave Drop Off Calculator (Premium content)
    • Setting out Eaves
    • Installing Fascia
  • Demolition
    • Masonry Mass Calculations (Premium Content)
  • Scaffold
    • Scaffold Calculations >
      • Scaffold Quantity (Premium Content)
      • Scaffold Soleplate Calculation (Premium Content)
      • Load Table Calculations (Premium Content)
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Demolition

Demolition of Minor Structures

Demolition is one of the most dangerous tasks that is undertaken in the construction industry, Hazards are not always obvious and extreme care and caution must be taken, for this reason many Demolition tasks require the approval and/or Licencing by your State Work Health and Safety Authority, in New South Wales this will be SAFEWORK NSW (previously known as WORKCOVER)
​

Methods of Demolition

There are Generally 4 methods of Demolition;

1. Manual Demolition
​Manual Demolition is any Demolition carried out by use of hand held equipment such as Sledge Hammers, Jack hammers, Picks or any similar piece of equipment operated by hand, it is imperative that this method of Demolition is carried out by "Sequential Demolition" meaning that the structure being Demolished is "Dismantled" in the reverse sequence of how it was constructed i.e. dismantling a brick wall from the top, one row of bricks at a time.
The majority of Domestic and/or Minor Demolition Tasks will be carried out using Manual Demolition methods.

​2. Mechanical Demolition
Mechanical Demolition is and Demolition carried out with the assistance of "Powered Mobile Plant" such as excavators, cranes, Loaders and Bulldozers.

3. Induced Collapse
​Induced Collapse is carried out by systematically removing structural supports and applying a force to the remaining structure causing it to collapse.

​4. Using Explosives
​As the you have probably already guessed, this method is carried out by using explosives to induce a structure to collapse.

Licencing Requirements

Your State Work Health and Safety Authority must be consulted when considering Demolition, in New South Wales this is SAFEWORK NSW (previously known as WorkCover) there are not only "Licencing Requirements" but also "Notification" requirements where the Authority and adjoining Property owners may have to be "Notified" of Proposed Demolition work, your State Work Health and Safety Authority will be able to advise you of any specific requirements for your scenario (a multitude of information and guidance can be found on the Authorities Website).
​Licencing is mandatory requirement for certain methods of Demolition, while there are limits to other methods of Demolition after which a Licence is then required, it is advisable to know your State Authorities requirements.
​In addition to Demolition Licencing, other Licencing may also be a requirement even if a Demolition Licence is not required, such as Demolition involving Hazardous products such as Asbestos.

Appropriate Reference Material

Your State Work Health and Safety Authority, in New South Wales this is SAFEWORK NSW, visit their Website where you will find Codes of Practice for Demolition and other related tasks, Licencing advice, application and Notification forms, and additional Guidance material at  http://www.safework.nsw.gov.au/

The appropriate Australian Standard is A.S.2601 "
The demolition of structures​"
A.S.2601 is available for a fee from the SIA Global website at http://infostore.saiglobal.com/store/

Additional places of Reference

It is also advisable to consult other authorities or experts such as;
​
Structural Engineers (Structural advice and Planning assistance)
Local Energy Supply Authority (advice on works requirements, applications and fee's for work)
​Related Trades such as Carpenters, Electricians and Plumbers
​ (job specific advice)
The Local Government Authority (applications or approvals for works)
The Local Tip (disposal fee's and requirements in relation to disposing Hazardous products)
​Roads and Traffic Authority (in case of road Closures or diversions)



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