CONCRETE 4

Question 1

made with
both stone and lightweight
aggregates

Answer 1

CONCRETE BLOCK

Question 2

an 8”x 8” x 16” will
approximately weigh 40 to 50 lb.
made with heavyweight aggregate
and 25 to 35lb. when made with
light weight aggregate

Answer 2

hollow load-baring concrete block

Question 3

defined as one having a core area of not
more than 25 percent of the gross
cross-sectional area.

Answer 3

solid load bearing rock

Question 4

-one in which the core area exceeds 25 . percent of the cross-sectional area

Answer 4

hollow; non load bearing concrete block

Answer 5

*hollow load-bearing concrete block
*solid load bearing block
*hollow; non load bearing concrete block
*concrete building tile
*concrete brick

Question 6

for non-load bearing
partitions common size

Answer 6

4” x 8” x 16”

Question 7

• for load bearing walls common size

Answer 7

6” x 8” x 16”

Question 8

quality

Answer 8

*hand made
*machine-made
*steam cured

Question 9

backyard industry quality

Answer 9

handmade

Question 10

commonly sold quality

Answer 10

machine-made

Question 11

manufactured by big and nationality known factories for load bearing walls

Answer 11

steam cured

Question 12

types of cements

Answer 12

 White Portland cement
 Masonry cements
 Air-entraining Portland
cement
 Oil well cement
 Waterproofed Portland cement

Question 13

1;1 1/1:3 – concrete
underwater, retaining walls

Answer 13

class AA

Question 14

1:2:4 – footings, columns
beam

Answer 14

class A