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LANDSCAPING & EXTERNAL WORKS
BLOOMING LOVELY Hilliers garden centre, Bosham
the strength to weight ratio of steel. This would mean smaller foundations would be needed for a reduced structure weight, resulting in shorter installation periods, reduced foundation loads, and ease of erection.
As a well-established and versatile material, the longevity of glulam timber has long been recognised – according to the Glued Laminated Timber Association, there are documented examples of its use around 200 years ago, while a number of structures that were erected more than 150 years ago are still standing. There are further performance advantages, established through carefully prescribed design procedures backed by practical tests, to ensure structural fire resistance. Large section timber elements perform very well in fires due to the fact that timber chars at a known rate and does not deform.
Fire performance of glulam has been the subject of extensive research and structural glulam members can be designed to last a certain period of time based on the rate at which it chars. Additional fire protective finishes can be used to further increase the fire performance. For this reason, glulam timber beams
WWW.ARCHITECTSDATAFILE.CO.UK
Glulam timber has been specified on landmark buildings such as the D1 Tower in Dubai
can attract lower fire insurance premiums than steelwork. Glulam timber’s proven resistance to corrosion and its ability to withstand harsh climates and exposed environments means the material can be trusted to stand the test of time. As timber doesn’t rust or spall, it can be safely specified for schemes across coastal regions. The material can add an unrivalled ambiance to garden centres when used for canopies, while specifying timber for school canopies can contribute to a ‘soft’ appearance of the outdoor spaces. Glulam timber would also allow architects meet tight project deadlines, as the products are manufactured with pre-engineered precision through offsite methods of fabrication, saving onsite time by increased building speed.
Stephen Toone is managing director at Fordingbridge
ADF JULY 2017
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