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A concrete finisher is a skilled tradesperson who works with concrete by placing, finishing, protecting and repairing concrete in engineering and construction projects. [ 1 ] [ 2 ] Concrete finishers are often responsible for setting the concrete forms , ensuring they have the correct depth and pitch.
Mason, a tradesperson skilled variously in brick and blocklaying, concrete finishing (the placement, finishing, protecting and repairing of concrete in construction projects). [7] Also stonemason, marble setter and polisher, tile setter and polisher, terrazzo worker and finisher. Hod carrier is a subsidiary trade (also see Laborer).
Cement masons are responsible for all concrete construction, including pouring and finishing of slabs, steps, wall tops, curbs and gutters, sidewalks, and paving. The organization is a member union of the AFL–CIO and Canadian Labour Congress.
The two most notable professional bodies are: The American Society of Heating, Refrigerating and Air-Conditioning Engineers (ASHRAE) was founded in 1894.; The British Chartered Institution of Building Services Engineers (CIBSE) was founded in 1976 and received a Royal Charter in the United Kingdom, formally recognising building services engineering as a profession.
Concrete is a composite material composed of aggregate bonded together with a fluid cement that cures to a solid over time. Concrete is the second-most-used substance in the world after water, [1] and is the most widely used building material. [2] Its usage worldwide, ton for ton, is twice that of steel, wood, plastics, and aluminium combined. [3]
They also repair and renovate old structures using reinforced concrete and steel. Ironworkers may work on factories, steel mills, and utility plants. A structural/ornamental ironworker fabricates and erects (or even dismantles) the structural steel framework of pre-engineered metal buildings , single and multi-story buildings, stadiums, arenas ...
The construction industry is a high-hazard sector, encompassing alteration and repair. Workers are exposed to various serious hazards, such as falling debris, unguarded machinery, heavy equipment, electrocutions, silica dust, and asbestos. [10]
CRH entered the United States in 1978 by buying Amcor, a concrete products group in Utah which would then form the basis of the company's U.S. division, which is now called Oldcastle Inc. Subsequent large purchases in the US included Callanan Industries, a New York State based aggregates and asphalt producer in 1985.