Foundations of Construction

Overview of Construction What is Construction? Construction is a broad industry that delivers buildings, infrastructure, and industrial facilities. But it's important to understand that construction encompasses far more than just building new structures. The industry includes repairs, maintenance, expansions, improvements, as well as demolition, dismantling, and decommissioning of existing assets. In other words, construction covers the entire lifecycle of a built asset—from planning and design through its eventual end-of-life. This comprehensive scope makes construction a diverse and complex industry with many different types of projects and specializations. The Three Main Sectors The construction industry is typically divided into three major sectors, each serving different purposes and requiring different expertise: Building Construction includes all projects that create structures for residential or non-residential use. Residential construction covers homes and apartments, while non-residential construction includes office buildings, retail spaces, hospitals, schools, and other commercial structures. Infrastructure Construction (also called heavy civil or heavy engineering) involves public works projects that serve communities as a whole. These include dams, bridges, highways, railways, water and wastewater systems, and utility distribution networks. This sector builds the backbone of modern society. Industrial Construction covers facilities used for manufacturing and resource extraction, including offshore energy installations, mining and quarrying operations, refineries, chemical processing plants, mills, and manufacturing facilities. Economic Significance Construction is a massive economic force globally. To understand its scale, consider these key figures: Global construction expenditure was approximately $4 trillion in 2012 By 2022, this had more than doubled to exceed $11 trillion Construction represents roughly 13 percent of global gross domestic product Forecasts project spending to reach approximately $14.8 trillion by 2030 In developed economies, the percentage is somewhat lower (6–9 percent of GDP), but in many developing nations, construction growth is even more significant as infrastructure and buildings are rapidly developed. China became the world's largest single construction market in 2010 and continues to dominate, while the United States ranks second with significant construction output. The industry also provides substantial employment. Construction employs roughly 7 percent of the global workforce—over 273 million jobs as of 2014. In the United States alone, construction employed about 11.4 million workers in 2020, with an additional 1.8 million in architectural, engineering, and related professional services. An important characteristic of the construction industry is that it consists primarily of small businesses. In the United States, approximately 60 percent of construction firms have fewer than 50 employees, meaning the industry is highly fragmented and decentralized rather than dominated by a few large corporations. The Hazardous Nature of Construction One critical distinction about the construction industry is its hazard level. Construction is one of the most dangerous occupations, accounting for approximately 20 percent of all United States industry fatalities in 2019. This dangerous nature stems from the inherent risks of working at heights, with heavy equipment, with hazardous materials, and in environments that are constantly changing as projects progress. This high hazard rate is a defining characteristic of the industry and influences everything from worker training requirements to insurance costs to project planning and management practices. Industry Composition and Diversity <extrainfo> Fast-Track Construction Modern construction practice has evolved to accommodate tighter timelines. Fast-track construction is an approach where design and construction phases overlap rather than occurring sequentially. Traditionally, a project would be fully designed before construction begins. In fast-track projects, construction can begin on some portions of a project while design continues on other portions. This approach now accounts for approximately 40 percent of construction projects, reflecting industry demand for faster delivery. </extrainfo> An important aspect of the construction industry is its diversity in workforce composition. While construction is a major employer, women remain significantly underrepresented. In the United States, women comprise roughly 10 percent of the construction workforce, while in the United Kingdom the figure is slightly higher at 12–13 percent. This gender imbalance is an ongoing challenge for the industry as it seeks to attract and retain talent from all demographics.