The Safest Way to Carry Out Concrete Demolition Jobs

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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 (.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.

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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.

No two demolition projects, whether total demolition or selective demolition, are alike. All demolition projects should incorporate a demolition quality control plan, which is a set of guidelines that should be followed from beginning to end of a project to ensure worker safety and, in the end, customer satisfaction. Here are some items that are always part of an R. Baker & Son quality control plan:

1. Safety is always the highest priority. Demolition is a specialty with many risks, so it is imperative that workers are continuously trained in safety and employers go above and beyond to ensure that everyone goes home to their family safely.
2. A dust, noise, and vibration schedule is necessary to prevent disruption to occupants of adjacent spaces and buildings such as hospitals and healthcare facilities, laboratories, offices, etc. 
3. Selective demolition usually requires the preservation of certain items such as process equipment, electrical gear, furniture, lab benches, etc. This can entail encasing these items with plywood or other materials, or removing them to another area completely. 
4. All demolition projects should be mobilized in an organized fashion. This means stationing demolition equipment, dumpster, gang boxes, and tools where they will not be in the way of the building&#;s operations or other contractors on the project. This requires close coordination with the client.
5. Ensure that site personnel does not enter or walk through a demolition area by posting signs, blocking and/or taping off access, and providing maps for alternate routes. 
6. Dust and odors must be controlled through methods appropriate for the project. This can include wetting of surfaces, wet misting, dust barriers, exhaust systems, sweeping compounds, etc. 
7. Utilities and other building processes that cannot be interrupted such as electrical, fiber optic, water, etc. should be identified, marked, and protected. Rerouting may be required
8. Work with the owner and other trades to systematically shut off power and other utilities in and around the demolition area. 
9. The demolition site must be made safe at the end of each day. Debris should be placed in dumpsters or appropriately staged for later removal. Tools and equipment should be organized, put away, and locked up for the next day&#;s operations. 
10. At the end of the demolition project, there should be a walk down with the client and/or construction manager to verify that all tasks have been completed to satisfaction and the site is left clean for the next phase of construction to begin.

About R. Baker & Son All Industrial Services

R. Baker & Son All Industrial Services, a Minority and Women-Owned Business Enterprise (M/WBE), in business since , is a premier specialized contractor operating in the United States, Canada, and Puerto Rico, with over one hundred employees and an exemplary safety record (we have been directly involved in four sites that received VPP OSHA Safety Awards). R. Baker & Son is financially strong, with bonding capabilities of over $10 million. Capabilities include industrial and commercial demolition, rigging, machinery- and plant-moving, dismantling, decommissioning, plant and equipment relocation, interior demolition, selective demolition, warehousing, wrecking and razing, millwright, plant reconfigurations, heavy rigging, salvage, environmental services, remediation, decontamination, abatement, and investment and asset recovery.

R. Baker & Son - All Industrial Services
190 Boundary Road
Marlboro, NJ
732-222-

https://rbaker.com/

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