kiln seasoning requires less stacking space but more expensive than the natural seasoning kiln seasoning is quicker than natural seasoning kiln seasoned timber is stronger than natural seasoned timber moisture content in the timber can be reduced to any desired level in kiln seasoning

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to make the timber fire resistant to remove the moisture from the timber at uniform rate to make the timber water proof none of the above

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less than one year 1 to 5 years 5 to 10 years more than 10 years

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to make the brick impermeable to prevent shrinkage to impart plasticity to make the brick durable

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50 to 60% 70 to 80% 5 to 10% 20 to 30%

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to lose cohesion to crack and warp on drying brittle and weak impermeable

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silica and alkalies alkalies and magnesium lime stone and alumina alumina and iron

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cracking and warping of bricks loss of cohesion enhancing the impermeability of bricks none of the above

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5 to 10% 20 to 30% 50 to 60% 70 to 80%

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magnesia silica iron alumina

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