Timber Informative Essay - 1207 Words

Materials Report By Mitchell Young Student Number: 212200874 SRT153 Building Materials Science Unit Chair: Dr Priya Rajagopalan May 26th 2013 Word Count: 998 SRT153 – Building Materials Science Material Report Mitchell Young Timber has been extensively used over the past century for many residential constructions, furnishings, frames, floorings and facades. It’s been a strong component in architectural developments and with such use, it’s recognized in the availability, renewability, environmental friendly, strength, weight, price, and durability.1 Within Australia, 90 percent of their housing frames are made from timber due to its sustainability and energy required to produce it.†¦show more content†¦The percentage usually lies between 0 to 25% MC between the cell walls, shown in EMC vs. Humidity graph. The percentages that go beyond this point up until 35%, reach their fibre saturation point, and above this, moisture is free water in the cell voids. By selecting low movement timber, protect from drying and wetting, adding a coat to the exterior, and using smaller cross†section cuts are good practices to minimise the shrinkage and mean a more durable and long er lasting timber. 7 Application in Engineered Trusses Trusses are used effectively when a large load is needed to be held up over a great distance. It means less timber used which is good for the environment, and spans a whole roofing distance. With compression and tension acting on the truss, any movements are eliminated, shown in below figure. Engineers use three main timbers as they are strong, lightweight, durable, and good pricing.8 SRT153 – Building Materials Science Material Report Mitchell Young LVL (Laminated Veneer Lumber) This is created form 3†5mm thick timbers laminated together for a long deep timber beam. With a longitudinal grain within the beams, strength vertical is increased and therefore is great for civil engineers, and wide roof spans. Sometime the timber is recycled and still has the same quality yet reduces the waste. 9 LVL Beam 10 Plywood Box Beams These are great as they are lightweight, built onsite, easy toShow MoreRelatedGlobal Warming : Causes, Effects And Remedies1748 Words   |  7 Pages Home About Us Publish Your Essay Content Quality Guidelines Disclaimer Privacy Policy Contact Us 1309 Words Essay on Global Warming: Causes, Effects and Remedies by Vishal Global warming is the greatest challenge facing our planet. It is, in fact, the increase in the temperature of the earth’s neon- surface air. It is one of the most current and widely discussed factors. It has far-reaching impact on biodiversity and climatic conditions of the planet. 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