What significant change occurred in building materials after 1970?

The introduction of energized wood components significantly changed building materials after 1970 due to advancements in technology and building practices. This shift in materials reflected a move towards engineered wood products, which are designed to maximize strength and durability while minimizing waste. Products like laminated veneer lumber (LVL) and glued laminated timber (glulam) became popular, offering improved structural integrity and versatility compared to traditional solid wood.

Engineered wood components are created through various processes that adhere wood fibers or strands together with adhesives, resulting in materials that are not only lightweight but can also be manufactured in larger sizes. This development has transformed construction methods, allowing for more innovative architectural designs and efficient use of resources.

The other choices do not capture this significant evolution in building materials which focuses on the combination of technology and sustainable practices.