The practical upper limit is likely to be higher with modern materials.

He combines this with the use of materials modern for his time, such as iron.

I directed that no modern synthetic materials be present in any of them.

But new houses of the 20th century were made by modern materials.

The design blends a traditional look with modern materials and style.

Until recently, most people believed that modern materials like plastic would last forever.

It is traditionally made of wood, although now modern materials are sometimes used.

The practice was revived in the late 20th century using modern materials and techniques.

Two modern materials that don't get on when used in proximity.

The use of modern materials however has been questioned by preservation groups.