Machines In Construction Essay
3.1. Role of machines in construction work execution
Construction work is to a large extent hard and labor intensive and often poses a health hazard. This is due to the fact that building production involves handling large masses of materials and that some of the materials, such as lime, paints, industrial chemical prod-ucts, and asbestos, are detrimental to human health. In addition, most construction works are carried out in the open. The mechanization of construction started with hard physical work and labor-consuming efforts, such as earth works and the horizontal and vertical transport of materials, only later embracing finishing works.
Construction work mechanization is inseparably linked with the technologies used in construction and so
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The house sits atop an undercarriage with tracks or wheels. Excavators are used in many ways: digging of trenches, holes, and foundations, material handling, brush cutting with hydraulic attachments, forestry work, demolition, general grading/landscaping, heavy lift e.g. (lifting and placing of pipes), and river dredging. [11] • Crawler loaders
The crawler loader combines the stability of the crawler tractor with the abilities of a wheel loader. However, to construct a reliable crawler loader it requires more than simply attaching a loader bucket onto a crawler tractor. It must be designed with its specific purpose in mind to ensure it has the strength to withstand heavy excavating.
The introduction of hydraulic excavators diminished the market for the crawler load-er because it was unable to match the excavators lifting power and flexibility. How-ever, crawler loaders are capable of maneuvering across the entire construction site under its own power, whereas most hydraulic excavators require towing or transport.
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