Where solid timber posts and beams will crack and twist, glulam members will remain stable. It offers high strength and dimensional stability.As a result, glulam can absorb moisture from the surrounding air without cracking, making it a suitable choice for more humid climates. For regular green lumber and kiln-dried lumber, moisture content is, respectively, about 20 percent to 50 percent, and 12 percent. Glulam engineered wood beams have low moisture content (about 12 percent at production stage).One advantage of reduced structural weight is that the building's foundation can be smaller. Timber has an excellent strength-to-weight ratio compared with steel or concrete, and glulam offers about 1 1/2 to two times the strength-to-weight ratio of steel of the same load-bearing capacity.Suited to long-span and curved designs, glulam offers strength without compromising design intent or aesthetics.Species of timber, type of glue, and preservative type and application are all factors in glulam's durability, but, correctly specified, glulam can offer a durable, low-maintenance solution. glulam goes to new residential construction and remodeling uses. These laminations are then face-bonded together to create the finished product. A little more than one-half of U.S. Individual pieces of lumber are end-joined together to create long lengths referred to as laminations. Glue laminated timber (glulam) is an engineered stress-rated product created by bonding together individual pieces of lumber having a thickness of 2 inches (50 mm) or less.
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