What is the main reason that synthetic materials are replacing wood in construction?

• High flammability

• Limited availability of wood

• Low mechanical properties

• Increasing price of wood

Which type of wood is used for making parquet and stairs?

• Oak

• Beech

• Elm forest

• Ash tree

What is the color of oak wood over time?

• Brown

• Whitish

• Reddish

• Yellowish

Which type of wood is used for making railway sleepers?

• Elm forest

• Ash tree

• Beech

• Oak

Which type of wood is used for the production of beds and boards?

• Spruce

• Pine tree

• Poplar

• Larch

What is the main disadvantage of spruce wood?

• Shrinkage and swelling

• High flammability

• Susceptibility to rotting

• Low mechanical properties

Which type of wood is used for making construction carpentry and furniture?

• Larch

• Pine tree

• Elm forest

• Silver fir

What is the main advantage of silver fir wood?

• Good mechanical properties

• Elastic and durable

• High flammability

• Resistant to rotting