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Glulam (glued-laminated timber) is a
structural timber product manufacture by gluing together
individual pieces of dimension lumber under controlled
conditions. The attributes of this wood product account for its
frequent use as an attractive architectural and structural
building material.
In the manufacutre of glulam, the
wood pieces are end jointed and arranged in horizontal layers or
laminations.
Laminating is an effective way of
using high strength lumber of limited dimensions to manufacture
large structural members in many shapes and sizes. Glulam is
used for columns and for beams and frequently for curved members
loaded in combined bending and compression.
Glulam is also energy efficient in
use. The well known insulation property of timber eliminates the
risk of cold bridging where the frame may penetrate external
elements of the structure. Its low thermal mass helps reduce
fuel an equivalent glulam beam.
The adhesives used in bonding glulam
has a remarkable resistance to chemical attack and therefore
glulam is often chosen as the preferred structural material for
buildings such as salt barns, water treatment plants, etc.
A direct cost comparison shows that
it is competitive with other structural materials; and the lower
weight of glulam leads to savings on foundations, transport and
erection.
The natural appearance of glulam is
sufficiently attractive to make it eminently presentable with no
cladding - indeed, used as exposed beams, glulam adds to the
aesthetic appeal of a structure.
Glulam can be used for roof, lintel
and floor beams, columns and rafters in almost any type of
structure.
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