Building Materials Asbestos Is composed of hydrous silicates of calcium and magnesium (CaSiO3, 3MgSiO3) Contains iron oxide and alumina Is a natural fibrous mineral substance All of these Is composed of hydrous silicates of calcium and magnesium (CaSiO3, 3MgSiO3) Contains iron oxide and alumina Is a natural fibrous mineral substance All of these ANSWER DOWNLOAD EXAMIANS APP
Building Materials Asbestos cement Warps due to changes in humidity Is brittle Strength is lowered when saturated by water All of these Warps due to changes in humidity Is brittle Strength is lowered when saturated by water All of these ANSWER DOWNLOAD EXAMIANS APP
Building Materials The percentage of alumina in a good brick earth lies between 5 to 10 % 20 to 30 % 50 to 60 % 70 to 80 % 5 to 10 % 20 to 30 % 50 to 60 % 70 to 80 % ANSWER DOWNLOAD EXAMIANS APP
Building Materials Percentage of silica in a good brick earth lies between 20 to 30 % 50 to 60 % 5 to 10 % 70 to 80 % 20 to 30 % 50 to 60 % 5 to 10 % 70 to 80 % ANSWER DOWNLOAD EXAMIANS APP
Building Materials The standard size of masonry bricks, is 18 cm x 8 cm x 8 cm 19 cm x 9 cm x 9 cm 20 cm x 10 cm x 10 cm 21 cm x 11 cm x 11 cm 18 cm x 8 cm x 8 cm 19 cm x 9 cm x 9 cm 20 cm x 10 cm x 10 cm 21 cm x 11 cm x 11 cm ANSWER DOWNLOAD EXAMIANS APP
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