In the past 100 years, the use of wood has generally been limited to light timber framing, generally no more than three to six stories high — structurally, the practical limit for that type of construction. But in the past 10 to 15 years, the development of new heavy timber products — cross laminated timber (CLT), glued laminated wood (glulam), and laminated veneer lumber (LVL) — has opened the door to taller and bigger buildings with wood as the primary building material.
