bricks

Question 1

good brick earth can be rolled without breaking in a thread of dia

Answer 1

3 mm

Question 2

clay brick earth silica & alumina %

Answer 2

35- 70% silica % 10- 20% alumina

Question 3

for good brick clay & silt content shd not be less than

Answer 3

50 %

Question 4

soil good for making bricks

Answer 4

weatherd clay

Question 5

efflorescence depoits are sulphates of

Answer 5

calcium

Question 6

which in excess causes decay of brick

Answer 6

magnesia

Question 7

pug mill is used for

Answer 7

tempering

Question 8

process of mixing of ingredients of brick

Answer 8

kneading

Question 9

bricks are burnt at a temp of

Answer 9

1000-1200 degree celsius

Question 10

water abspn for burnt perforated bricks shd not be less than

Answer 10

15%

Question 11

bricks used for lining of furnaces

Answer 11

refractory bricks

Question 12

defect caused by falling of rain on hot bricks

Answer 12

chuffs

Question 13

bricks used for load bearing masonry shd have crushing strength more than

Answer 13

105 kg/cm2

Question 14

for checking length of bricks as per Indian standards how many bricks have to be taken

Answer 14

20

Question 15

position of brick cut in angles other than right angles in plan is known as

Answer 15

squint closer

Question 16

stone chips or broken bricks are known as

Answer 16

spall