timber project
1. Timber has been a building material since man first came out of his cave. The reasons for this are due to timber being a plentiful product and the properties it holds, being that timber is high in strength, light weight, and reasonably durable. Timber can be cut and shaped easily without the use of machines. Prehistoric man found that these properties were ideal for building houses, boats, and bridges. Timber is now has many different uses, including paper, furniture, doors, windows, decorative objects and structural members etc. The uses for timber is endless and as long as the replanting continues and our resources are retained generations to come will enjoy the benefits timber has given us. Gymnosperms (Evergreen, softwood, conifer) These are the most primitive type of tree, the leaves are in the form of needles they have one main stem and a conical shape to the crown e.g. Douglas fir quite quick to grow. These are flowering plants and are more advanced in evolution than conifers. They have broad leaves, multiple stems and a globular crown shape. E.g. Oak, Walnut. Slow to mature and expensive to purchase compared to softwood.
Generally the thermal movement of timber is small about 13.3mm / metre which make this an ideal material for an area with a large temperature range i.e. a roof space with the temperature ranging from as low as -10ºC up to 40ºC timber is an ideal material for this purpose. Expansion joints are not normally required even in large structures. A rise in temperature of 1 °C can reduce the strength of timber by 0.3 %. The compressive strength of wood in an average piece of timber with a density of 513 kg/m³ has the compressive strength of 30 - 40N/m² · Forests Forever is a campaign by Britain's timber industry to help safeguard the forests of the world, by supporting forest management and regeneration projects. Correctly harvested, the timber is not damaging the global environment. Wood is a renewable resource; it is organic, non-toxic, recyclable and biodegradable. Bulk Densitykg/m3 Material Thermal conductivity(k) W/mK Thermal resistivities(lk) mK/W
Some common words found in the essay are:
Suitability Joinery, Walnut Slow, Thermal Movement, W/mK Thermal, Wd Timber, Timber Manual, , Water Absorption, Electricity Timber, Gymnosperms Evergreen, moisture content, compressive strength, carbon dioxide, thermal conductivity, timber species properties, strength timber, tree sapwood, fungi attack, preservative treatment, timber natural, ref 7, species properties nafi, p1 timber species, nafi timber manual, moisture content timber,
Approximate Word count = 1962
Approximate Pages = 8 (250 words per page double spaced)
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