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Timbers - Coggle Diagram
Timbers
Working properties
Consider the different properties of timber when selecting your material
Strength-the amount of load or compression it can withstand
Toughness-absoption of energy through shock before splitting
Elasticity-will it return to shape after being compressed?
Hardness-how resistant is the surface?Will it survive scratches,knocks and abrasion?
Hardwood-Is sourced form deciduous trees
Deciduous trees drop their leaves in autumn and new leaves grow in spring
Hardwood is slower growing and therefore is more expensive
Sought after for its variety of colours and grains,it has good aesthetical and physical properties
Furthermore it has a closer grain,making it more dense and hard wearing
Natural
It is:Aesthetically pleasing
A good insulator
Durable and tough
Softwood-They come from coniferous trees
Most coniferous tress have needles,are evergreen,and they keep their needles all year round
Softwood trees grow faster than hardwood trees making it relatively cheap and readily available
Also the grain is wider making it more absorbent
Tough or hard?-Hardwoods are used in wide range of applications.
Ash is very tough,but also flexible and shock resistant
Beech is tough and very durable with a fine finish
Oak is tough,hard and durable with a variable grain
Felling-A tree is felled when it is cut down
Traditional methods of felling include using saws and axes
Chainsaws are used in modern felling