 WILLAMETTE
For years design professionals have specifier glulams for
their aesthetic appeal. Today, specifiers are finding that glulams are often the best
choice for a wide variety of applications. Glulams are a creative, readily available, and
economical alternative to solid-sawn timbers, laminated veneer lumber, steel or concrete
structural members, in many applications, glulam costs 20 - 50% less than other structural
products.
Willamette Industries' glulams have been used in many
applications including: concealed or exposed beams, headers and columns in residential and
commercial projects, warehouse roof beams and purlins, church arches, girders and deck
panels for timber bridges.
Willamette's glulam products are easily installed using
conventional equipment and tools. Glulams offer high impact resistance and have excellent
thermal and chemical resistance characteristics.
GLULAM
Excellent fire resistance properties of glulams are
documented through research and actual fire conditions. Steel rapidly loses strength at
high temperatures, while the charring of glulams at high temperatures provides a unique
insulating property which protects its structural characteristics.
Glulams manufactured by Willamette Industries fully utilize
our second growth timber resources. The laminating process disperses the natural lumber
defects, and places the higher grade laminations in zones that receive the greatest
stresses throughout the member. High quality, kiln-dried laminations are carefully
arranged and bonded together with exterior grade adhesives creating an exceptionally
strong, durable, and dimensionally stable structural member.
Industry standards define location of specific lamination
grades and species within the depth of the glulam member. Design values have been
established for a wide variety of these lay-up combinations. Span tallies, substitution
tables, and computer software selection programs are available from Willamette Industries
to assist in the design of our glulam beams.
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