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Mechanical Properties of Timber

1. Strength : The ability if a timber to withstand stress or external load.    i.e   -Bending parallel to the grain,   -Compression parallel and     perpendicular to the grain,    -Tensile parallel to the grain    -shear parallel to the grain. 2. Elasticity: modulus of elasticity by Inertial. Elasticity = Elasticity x Inertial

Physical Properties of Timber

1. Density: This is the ratio of mass per volume of a timber structures. Timber with a close packed grain tends to handle a high density than those with much spaced grain. 2. Seasoning: This is process of reducing moisture content from from timber. 3. Thermal conductivity. 4. Thermal Expansion.

Defects of Timber

Defect of timber is any features that lowers the technical or commercial value of timber and may leaf to its rejection or its relegation to a lower grade. Example of such are ; Twisting, Decay, swelling etc

Seasoning of Timber

Seasoning of timber is the process of allowing timber to dry under atmospheric conditions or reducing moisture content from timber.. This could be Naturally or Artificially induced seasoning.. 1. Natural seasoning : Allowing timber to dry without direct sun light exposure. This could take as much as 6 months. 2. Artificial seasoning : drying of timber using oven. This could take 2 weeks.

Timber and its properties

Timbers is that part of tree that can be used for structural proposes/construction and carpentry. MECHANICAL properties of timber includes; 1. Strength :- this is the ability of timber to withstand stress or external load. i.e . Bending stress, compression stress, tensile stress, shear stress. 2. Elasticity :- EI Its ratio if Modulus of elasticity to its inertial. PHYSICAL properties of timber includes; 1. Density : this is the ratio its mass and volume. Timber with a close packed grain tends to handle a higher loading than those with much spaced grain. 2. Thermal Expansion. 3. Thermal conductivity 4. Seasoning : this is process of reducing moisture content from timber. This could be natural seasoning or artificial seasoning.

How to Identify Quality/Original Stone Coated Roofing Tiles

The following steps will help to Identify Quality, Stone Coated Roofing Tiles. 1.       Check the back of the roof tile, confirm whether The Manufacturer's name, Distributor's name and ISO Number is fully inscribed at the back of the stone coated roofing tiles. If you can't find this information, it is an indication that the stone coated roofing tile is "inferior" and it will surely fade off in short period of time. 2.   Ask the distributor or supplier to provide the manufacturer's full contact. Failure of your distributor or supplier provides the manufacturer's contact, is an indication that they are supplying you with "inferior" stone coated roofing tiles. 3.  The thickness of the stone coated roofing tiles must be 0.55mm in gauge 4.   The price range is an average of; #3,200( New Zealand and Belgium ), #2,600 to #2,900( South Korea ) per sqm And for the design ...