Full extent of flood damaged KZN infrastructure only likely to be revealed by repeat inspections

Full extent of flood damaged KZN infrastructure only likely to be revealed by repeat inspections
Jet Demolition adds value by advising clients or insurers on the best suited risk adverse methods

It can be reasonably anticipated that the full extent of the damage caused to structures during the unprecedented flooding in parts of KwaZulu-Natal from 11 to 12 April may only be revealed over time. This is because the potential for water ingress through damaged concrete could result in spalling over time. “It is important that structures are not only assessed on a once-off basis, but that repeat inspections are carried out at varying intervals to fully understand the damage caused,” says Jet Demolition Contracts Manager Kate Bester.

The damage caused to structures will vary due to various factors, including the duration at which these structures were submerged, whether they were submerged or exposed to flowing water, and the areas within which they are constructed. “The key consideration now is to continue to exercise caution,” urges Bester. This is important where structures have suffered damage or been exposed to extreme elements such as excessive water or even fire.

The way forward now is for specialist companies and engineering consultants to undertake general preliminary assessments to determine whether a given structure can be salvaged or may need to be condemned. Such professionals are usually appointed by the property owners or their insurers to guarantee that these critical assessments remain independent. “In some cases, structures that pose an immediate risk to public safety will be completely vacated and placed under guard to prevent unauthorised access,” notes Bester.

When dealing with unsafe, unsound, or irreparably damaged structures, the primary concern is to bring the structure to ground safely. Once the structure is reduced to a safe condition, the focus can shift to sorting and managing the resulting waste. Typically, concrete rubble will either be crushed for reuse in shaping and backfilling activities or removed to spoil.

Steel will be recycled, while hazardous materials such as light ballasts or electronic waste is removed to hazardous waste disposal. In extreme cases, most prevalent in fire-damaged structures, there is often product or goods stored within the facility prior to the blaze. These fire-damaged goods, in most instances, are not suitable for general disposal and need to be treated as hazardous waste.

“Jet Demolition regularly assists property owners and insurers to estimate the demolition costs associated with these projects or advising on the most appropriate approach to bring the structure safely to ground,” highlights Bester. The challenge is that demolition methods are often prescribed in requests for proposals (RFIs) based on experience. However, this may not necessarily be the best option for a damaged structure.

“We add value by advising potential clients or insurers on more appropriate and risk-adverse methods more suited to the actual condition of the structure,” says Bester. The equipment deployed on a damaged structure varies from a 1.4 tonne mini excavator to enter extremely confined spaces to a 102 tonne high-reach demolition excavator capable of tackling a structure mechanically without the need for persons to enter into unsafe or structurally unsound environments.

“We own a fleet of specialised plant and equipment, ensuring we are able to respond appropriately to the task at hand without introducing any unnecessary or additional risk,” says Bester. Jet Demolition has responded to several emergency projects over the years, as far afield as Indonesia, where it undertook the explosive toppling of a damaged water tower in Banda Aceh for the UN Development Programme. “Closer to home, we have responded to a vast number of emergency projects resulting from fires, human error, or natural disaster,” concludes Bester.

Pull quote

“It is important that structures are not only assessed on a once-off basis, but that repeat inspections are carried out at varying intervals to fully understand the damage caused.” – Kate Bester, Contracts Manager, Jet Demolition

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About Jet Demolition

Jet Demolition has been undertaking industrial demolition works since 1994, and is the leading, largest, and most technically advanced demolition company in Africa. It offers in-house, full-range demolition services, including advanced mechanical solutions and controlled implosions. It actively pursues ongoing development of skills and equipment suited to the changing needs of the industry.

Jet Demolition is a technically based company, with various staff members holding MSc, BSc, and BTech Degrees, as well as National Diplomas, in various engineering fields. This expertise gives it the technical foundation to successfully engineer solutions for large and complex demolition projects, and furthermore fuels its drive to deliver quality projects safely. Jet Demolition strives to offer its clients innovative and technical solutions to demanding demolition challenges.

Jet Demolition Contact

Kate Bester (NDip Civil Engineering – PMP)

Contracts Manager

Phone: (011) 495 3800

Cell: 072 811 5310

Email: [email protected]

Web: www.jetdemolition.co.za

Media Contact

Rachel Mekgwe

NGAGE Public Relations

Phone: (011) 867 7763

Fax: 086 512 3352

Cell: 074 212 1422

Email: [email protected]

Web: www.ngage.co.za

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