Concrete/ Masonry

Question 1

3 major components of concrete

Answer 1

Water
Aggregate
Portland cement

Question 2

What are the disadvantages of concrete?

Answer 2

Low tensile strength

Expands and contracts

Shrinks when dry

Heavy

Question 3

How heavy is a bag of cement?

Barrel?

Answer 3

94 lbs

376 lbs

Question 4

Types of mortar

Answer 4

M
S
N
O

Question 5

What are the advantages to concrete?

Answer 5

High compression

Can be cast molded shaped

Little maintenance

Economical

Used universally

Durable

Strength can be predetermined

Question 6

Forms must be what?

Answer 6

Tight
Rigid
Strong

Question 7

Types of concrete?

Answer 7

Reinforced
Prestressed
Precast
Light weight

Question 8

Mortar desirable factors?

Answer 8

Plasticity
Water retention
Strength and durability

Question 9

How many types and what are their cure days?

Answer 9

Type 1-28
Type 2-45
Type 3-7
Type 4-90
Type 5-60

Question 10

Planning saves what?

Answer 10

Time
Labor
Materials

Question 11

1-2-3 mix formula?

Answer 11

(Pv) = L x W x H x #of structures /12 *if inches used

(LF) less than 5400 x 1.1
More then 5400 x 1.05

(Lv) x 1.5 round up

C= V x 1 / 6 
S= V x 2 / 6
G= V x 3 / 6
W= bags cement x 8