DEMOLITION

• Demolition


  A way of breaking up, obliterating, destroying, or wiping out of any building or structure or any part of a building; along with the materials used in the construction of the property
• Demolition


  • Poses risks similar to construction but is more perilous due to unknown factors, heightening its inherent danger and complexity
• Demolition (in construction)


  The wrecking out of any load-supporting structural member of a structure by a controlled or pre-planned methods or procedures
• Safe Demolition Requires Adequate Planning (Rule 1417 OSHS)


  1. Identify the Hazards

  2. Meet Legislative Requirements

  3. Ensure Appropriate Equipment

  4. Ensure Safe Disposal of Materials

  5. Determine Appropriate Methods of Demolition

  6. Determine Cost of Demolition
• Hazards


  Potential threats leading to damage, harm, or adverse health effects. They represent sources of danger, emphasizing the need for proactive measures to mitigate risks and ensure safety
• Identifying and addressing these threats are crucial for ensuring occupational health and safety
• Regulations outline critical safety measures, material handling protocols, and environmental protection guidelines to ensure the project adheres to legal and ethical standards
• Factors like structure size, material composition, and chosen demolition method influence the selection of appropriate tools and machinery
• Adhering to waste management regulations, segregating reusable materials, and implementing responsible disposal methods for hazardous materials
• Determining Appropriate Methods of Demolition


  1. Consider the structure, location, materials used, strength of the building, and threats that it may pose if wrongfully executed

  2. Finding the best method before proceeding with the plan is the most important element in ensuring a safe demolition process
• Demolition costs are capitalized as part of the investment property if they are directly attributable to bringing the asset to the location and condition for its intended use
• Sequential demolition


  Gradual reduction of height in reverse order to how it was constructed
• Induced demolition


  The method of controlled demolition known as "induced collapse" involves the systematic removal of critical structural elements, often combined with applied force, to achieve a predictable collapse of the entire building or a designated portion
• Methods of Demolition

  • Manual demolition
  • Mechanical demolition
  • Explosive demolition
• Manual demolition


  Use of hand tools, such as sledge hammers, to dismantle a building or structure
• Mechanical demolition


  Dismantling buildings using heavy equipment like cranes, bulldozers, and excavators
• Explosive demolition


  Using explosives to break the building into small pieces
• Explosive demolition is quick and efficient, but it's not suitable in all circumstances
• Demolishing a building or smaller structure by hand or by machine could be a better option if you simply need a section of it destroyed
• Explosives Storage


  • Follow manufacturer's instructions
  • Detonators should be stored in a separate magazine
  • Storage should be fire and bullet-resistant
• Proper Use of Explosives


  • Operation between Sunup & Sundown
  • Precaution on the use of mobile Radio Transmitting Equipment
  • Suspension of operation during Electrical Storm
• Demolition Work Plan


  1. Technique and Method of Demolition

  2. Sequence of Work Operation

  3. Estimate of Time of Completion

  4. Equipment to be Used

  5. Proposed Access and Egress

  6. Public Protection

  7. Bracing and Shoring

  8. Disconnection of Services

  9. Methods of Handing/ Disposal of Demolished Materials

  10. PPE Requirements
• Demolition Personnel

  • Demolition workers
  • Demolition Supervisor
• Demolition workers


  Complete the physical duties required for the demolition process by adhering to safety protocols and using the proper instruments and equipment
• Demolition Supervisor


  Supervise the demolition process and guarantee that it is completed in compliance with project specifications and safety laws
• Hazards Associated with Demolition


  • Falls
  • Being Hit/Trapped/Crushed by Object
  • Manual Handling
  • Hazardous Substances and Dangerous Goods
  • Noise and Vibration
• Falls


  Demolition activity carries a substantial risk of falls from heights due to frequent contact with large structures and uneven terrain
• Provide workers with the proper fall protection equipment, like lanyards and harnesses, to avoid freefall and lower the possibility of falls resulting in injuries or fatalities
• Being Hit/Trapped/Crushed by Object


  Workers can be injured by getting pinched, crushed, or caught between objects, like being pinned between equipment and solid surfaces, crushed by mechanical parts, or caught under falling materials
• Manual Handling


  When workers must move big objects—like debris—manually without the right tools or training, there may be a risk involved with demolition, which may result in musculoskeletal conditions, like back discomfort and strains
• Hazardous Substances and Dangerous Goods


  Workers may be seriously endangered by hazardous materials and dangerous goods, which can cause harm to workers and the environment if not handled properly
• High noise and vibration are also hazards associated with demolition
• Hit/Trapped/Crushed by Object


  One significant hazard in construction is being "caught-in" or "caught-between," where workers can be injured by getting pinched, crushed, or caught between objects. This risk includes being pinned between equipment and solid surfaces, crushed by mechanical parts, or caught under falling materials
• Manual Handling


  • When workers must move big objects—like debris—manually without the right tools or training, there may be a risk involved with demolition. This may result in musculoskeletal conditions, which can be crippling and chronic. Examples of these include back discomfort and strains.
• Hazardous Substances and Dangerous Goods


  • When demolition is underway, workers may be seriously endangered by hazardous materials and dangerous goods. These materials can cause harm to workers and the environment if not handled properly, emphasizing the need for safe handling, disposal, and protective measures during demolition operations.
• Noise and Vibration


  • High noise and vibration levels are produced during demolition operations, which could endanger the health and safety of nearby residents as well as workers on the job site. Such disruptions have far-reaching negative impacts, including hearing loss from loud noises and vibration-induced structural damage to surrounding buildings. It is essential to implement efficient noise and vibration control methods to address these issues.
• Electric Shock


  • Electric shock is one of the biggest risks connected to demolition operations. When workers come into contact with equipment or live electrical cables, this can happen. It's critical to take the required safety measures to prevent electric shock because it might result in severe injuries or even death.
• Fires and Explosions


  • Fires and explosions resulting from flammable and explosive substances during demolition activities pose significant challenges to the safety and successful execution of the process. Inadequate storage, transportation, or handling of various chemicals and gasses commonly employed in demolition activities can lead to unintended ignition sources, potentially resulting in uncontrolled fires.
• Equipment


  • Using heavy machinery in demolition presents risks such as crushing injuries and struck-by incidents due to equipment movement. The importance of clear communication, designated walkways, and personal protective equipment is crucial. Guardrails and fencing, for instance, are essential in demolition to keep workers away from large machines, reduce the chance of accidents, and prioritize worker safety.
• Isolation


  To prevent unexpected startup and safeguard employees, isolation in workplace safety refers to separating areas or systems, such as electrical systems or machinery, during repair. Physical barriers, such as guardrails and fencing, are used to isolate people from risks, maintaining a safe distance and prohibiting unlawful access.