Buildings have been in decline for decades and are now being built on a global scale.
But a team of scientists has been studying how materials are manufactured in buildings that may one day be obsolete, according to a report in the American Journal of Physical Anthropology.
The study was published online June 14.
The researchers used data from more than 1,600 buildings in cities around the world and found that more than 50 percent of the materials were manufactured using carbon and aluminum.
Other materials included carbon, plastic, copper, stainless steel, and glass.
The material used in building materials is also important for a wide range of applications.
In a study published in 2016, researchers found that aluminum and carbon are used to make tools, electrical components, insulation, windows, roofs, and other building elements.
“We are seeing a significant increase in the use of these materials, and it’s important to understand the impact of this,” said lead author Jonathan T. Hensley, an assistant professor of anthropology at University of Illinois at Urbana-Champaign.
“There are very few building materials that are not being made in a way that’s quite inefficient,” said Hensys doctoral student Shilpa Kulkarni, who was also a co-author.
“Even the building material itself has become very important.”
The researchers found about 1,400 new materials were added to the building materials inventory each year in 2015, a number that has increased from around 200 in the early 2000s.
The materials that were added are often the same materials used in the original building, so the new materials do not affect the properties of the original material.
In some cases, the materials that have been added are also used in other buildings.
For example, in a study conducted in 2010 and 2011, researchers at the University of California, Davis, used new glass to create a facade for the city’s downtown campus.
“The glass was recycled from other buildings, and then it was blended with the materials of the building to create the facade,” Hensleys co-authors and the University College London team said in the report.
The glass was used to create decorative elements, such as a glass wall, a decorative stone wall, and a glass roof.
The building materials are also important to people because they provide structural support, the researchers said.
The team looked at the building in Shanghai, China, and found more than 80 percent of buildings had one or more new building materials added to their existing building materials.
Hinsys co-lead author James S. Schmitt, a professor of architectural history and engineering at the College of New Jersey, said the team’s findings show how important it is to know the building’s building materials and the use they are made in.
“It’s a really exciting time for building design and for architectural history,” said Schmitt.
“These materials are essential to building construction, and we should be very careful with them.”
The authors of the study did not include any building materials in their analysis of the buildings they studied.
For the first time, Henskins and Schmitt found that carbon was the most commonly used building material.
“If you were building a home, you could build a lot of steel framing,” Hinsies said.
“But you could also build a house that was more flexible and that was able to be built in a much more diverse way.”
Hensons study focused on building materials as they have been developed over the last several decades.
The number of new building material additions is higher in cities than in the rural or urban areas.
The findings are consistent with a growing trend of people living more locally and living closer to the ground.
The research shows that the amount of new material added to buildings varies greatly based on the type of building and the type and location of existing structures.
“People are choosing to live in more rural areas because they’re getting access to much more materials,” Hainsys said.
For instance, there’s less and less wood in many older buildings in the U.S., so people are moving to more rural locations.
Hainsies said the researchers plan to examine the types of building materials used and what type of materials were used to build the buildings, which could help to identify the sources of the material additions.