- Дата: 5-07-2024, 09:44
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A construction worker is a worker employed in the physical construction of the built environment and its infrastructure. Construction safety is intended to ensure a safe environment for workers, who are required to be educated on safety at each site. For tall concrete buildings, where neither explosive nor high reach demolition with an excavator is safe or practical, the "inside-out" method is used, whereby remotely operated mini-excavators demolish the building from the inside, whilst maintaining the outer walls of the building as a scaffolding, as each floor is demolished. Hydraulic hammers are often used for concrete structures and concrete processing attachments are used to crush concrete to a manageable size, and to remove reinforcing steel. Newer methods may use rotational hydraulic shears and silenced rockbreakers attached to excavators to cut or break through wood, steel, and concrete. The building is pulled down either manually or mechanically using large hydraulic equipment: elevated work platforms, cranes, excavators or bulldozers. The demolition project manager/supervisor will determine where undermining is necessary so that a building is pulled in the desired manner and direction. Fred Dibnah used a manual method of demolition to remove industrial chimneys in Great Britain. Controlled implosion, being spectacular, is the method that the general public often thinks of when discussing demolition; however, it can be dangerous and is only used as a last resort when other methods are impractical or too costly.