BRICK MASONRY

1. The standard size of masonry bricks isa) 18 cm x 8 cm x 8 cmb) 19 cm x 9 cm x 9 cmc) 20 cm x 10 cm x 10 cmd) None of these

Ans – b) 19 cm x 9 cm x 9 cm

2. The term frog meansa) an apparatus to lift the stoneb) a depression on the face of brickc) vertical joint in a brick workd) soaking brick in water

Ans – b) a depression on the face of brick

3. The frog of a brick is normally made on itsa) top faceb) bottom facec) longer faced) shorter side

Ans – a) top face

4. The size of mould for bricks, is generally kepta) a little large to specified sizeb) a little small to specified sizec) equal to specified sized) 10% larger than specified sizee) 20% larger than specified size

Ans – a) a little large to specified size

5. For one cubic metre of brick masonry, number of bricks required area) 400b) 425c) 450d) 500e) 550

Ans – d) 500

6. The minimum compressive strength of 1st class bricks should bea) 75 kg/cm2

b) 90 kg/cm2

c) 100 kg/cm2

d) 125 kg/cm2

Ans – c) 100 kg/cm2

7. The minimum compressive strength of 2nd class bricks should bea) 75 kg/cm2

b) 90 kg/cm2

c) 100 kg/cm2

d) 125 kg/cm2

Ans – a) 75 kg/cm2

8. A first class brick immersed in water for 24 hours, should not absorb water (by weight) more than

a) 10%b) 15%c) 20%d) 25%e) 5%

Ans – c) 20%