Building

A building, or edifice, is an enclosed structure defined by having walls and a roof.

These structures are intended to stand permanently in one location. They serve as essential tools for human society by providing shelter from harsh weather. Buildings create a physical separation between a human habitat and the outside world. This separation offers security, privacy, and a place to store belongings.

Beyond basic utility, buildings can also serve as canvases for artistic expression.

Buildings are categorized by their primary function and how they are used. Residential buildings are designed for living, ranging from single-family houses to multi-family apartment buildings.

Commercial buildings host businesses, such as restaurants or stores, where people do not live. Industrial buildings support heavy industry through structures like factories and warehouses.

Agricultural buildings, like barns, support farming activities. Some structures are mixed-use, combining different functions like residential and commercial spaces. A group of related buildings may be called a complex, such as a hospital or educational complex.

Designing and constructing a building is a highly organized, collective effort. It begins with a real estate developer who secures necessary funding.

Financial institutions and investors provide the capital required for the project. Architects and engineers then create the design and detailed construction documents. Various engineering disciplines are required to make the building functional. These include civil, structural, mechanical, electrical, and plumbing engineers. Specialized experts might also handle acoustics, fire prevention, or building management systems. Finally, contractors perform the actual construction and install the necessary systems.

Throughout history, the way humans build has changed significantly. Clear evidence of homebuilding exists from approximately 18,000 BC.

Buildings became much more common during the Neolithic period. Over time, many factors have influenced how structures are designed. Builders adapt to available materials, local weather, and ground conditions. Land prices and the desire to live near employment also drive design. For example, high ground prices often lead to increased settlement density. This results in smaller distances between buildings and taller structures.

Modern buildings rely on complex internal infrastructure to function properly. This infrastructure, often called the physical plant, includes heating, cooling, and power.

Many commercial buildings use intricate HVAC systems, which stands for heating, ventilation, and air conditioning. These systems may occupy large spaces, such as double floors or false ceilings. Buildings also require conveying systems to move people between levels. These include elevators, escalators, and even moving sidewalks. In some connected areas, skyways or underground cities allow movement between different buildings.

Technical measurements help professionals define the scale of a structure. Structural height is measured from the street level to the highest architectural detail. Spires and masts are sometimes included in this measurement, but not always. For instance, masts used as antennas are generally excluded from the height. There is also a distinction between low-rise and high-rise buildings. While the exact line is debated, three stories or less is generally considered low-rise.

This classification helps in planning and managing urban spaces.

Despite their permanence, buildings can face various forms of damage. They may be damaged during the construction phase or during later maintenance. Natural events like storms, floods, or earthquakes can impact a structure. Subsidence, which is sinking caused by mining or water withdrawal, can also cause issues.

Human-related factors, such as fire or improper alteration work, can lead to dilapidation. Regular maintenance is essential to prevent a building from falling into disrepair. Understanding these risks is a key part of modern engineering and building management.