Construction is a general term meaning the art and science to form objects, systems, or organizations, and comes from Latin constructio (from com- "together" and struere "to pile up") and Old French construction. To construct is the verb: the act of building, and the noun is construction: how something is built, the nature of its structure.
In its most widely used context, construction covers the processes involved in delivering buildings, infrastructure, industrial facilities and associated activities through to the end of their life. It typically starts with planning, financing, and design, and continues until the asset is built and ready for use; construction also covers repairs and maintenance work, any works to expand, extend and improve the asset, and its eventual demolition, dismantling or decommissioning.
The construction industry contributes significantly to many countries’ gross domestic products (GDP). Global expenditure on construction activities was about $4 trillion in 2012. Today, expenditure on the construction industry exceeds $11 trillion a year, equivalent to about 13 percent of global GDP. This spending was forecast to rise to around $14.8 trillion in 2030.Although the construction industry promotes economic development and brings many non-monetary benefits to many countries, it is one of the most hazardous industries. For example, about 20% (1,061) of US industry fatalities in 2019 happened in construction.
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