Engineered bamboo
Template:Short description Engineered bamboo is a set of composite products produced from bamboo. It is designed to be a replacement for wood[1] or engineered wood, but is used only when high load bearing strength is not required[2] because building standards for this type of use have not been agreed by regulatory bodies.[3] Engineered bamboo comes in several different forms, including bamboo scrimber and laminated bamboo,[4] which has three times the structural capacity as normal timber[5] and is defined and regulated by the ASTM International Standards.[6]
Engineered bamboo has been used as paneling, vehicle beds, concrete formworks,[2] lightweight building construction[7] and even for shelters after the 2004 tsunami.[8] In comparison to the woods that have been traditionally used, a number of benefits and drawbacks have been identified. Lower cost, especially when replacing wood that would otherwise have been imported, is a key advantage.[9] Further benefits include greater hardness and shape retention, especially in high temperatures.[10]
However, bamboo is not as resilient as most woods and will decay more rapidly than other woods if not treated with preservatives.[11]
New building methods have had to be developed for engineered bamboo as its properties are sufficiently different, and make normal wood-working methods used with (non-engineered) bamboo unsuitable.[12]
In order to overcome the typical loss of strength bamboo incurs when bending takes place post-harvest, an alternative method to overcome this has been developed.
Pre-harvest bending of the bamboo stems in zig-zags, allows the bamboo to later form a Warren truss.[13]
Alexander Vittouris has proposed a much simpler 2D S-bend shape, which—after harvesting, and in sufficient quantities—could be assembled into a variety of 3D shapes. The arboriculture technique used to make both shapes is similar to tree shaping, and result in parts similar to woodworking knees.[14][15][16][17]
References
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- ↑ Cassandra Adams. "Bamboo Architecture and Construction with Oscar Hidalgo".
- ↑ Alexander Vittouris and Mark Richardson. "Designing for Velomobile Diversity: Alternative opportunities for sustainable personal mobility" Script error: No such module "webarchive".. "Section 4.4: Structural pre-harvest deformation of bamboo". 2012.
- ↑ Kimberley Mok. "Ajiro Bamboo Velobike: A "Grown Vehicle" That's Farmed, Not Factory-Made". 2011.
- ↑ Brit Liggett. "The Ajiro Bamboo Bike is Grown From the Ground Up". 2011.
- ↑ Stephen Cauchi. "Bamboozled? Give it a grow" 2011.
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