Masonry

Question 1

Rule for load bearing walls

Answer 1

Do NOT interlock courses of block

Question 2

Planning saves…

Answer 2

Time, Labor, Materials

Question 3

Tooling / Striking

Answer 3

“Tool” all mortar joints once mortar becomes “thumbprint” dry

Question 4

Rule for a Closure Block

Answer 4

Leave a minimum of a 16 1/2” gap

Question 5

Desirable properties of Mortar

Answer 5

Plasticity, water retentivity, strength, durability

Question 6

4 types of mortar

Answer 6

Type … M , S , N , O

Question 7

CMU block referenced dimensions , actual dimensions

Answer 7

Ref. - 8”x8”x16”

Act. - 7 5/8” x 7 5/8” x 15 5/8”

Question 8

Portland Cement requires using…

Answer 8

Lime

Question 9

1 person can mix 1 cu yd per hour

Answer 9

Hand Mixing

Question 10

Forms (hold concrete until it sets) must be _______?

Answer 10

Tight, rigid, strong

Question 11

4 types of Foundations

Answer 11

Footer , Monolithic , Stem Wall , Floating Slab

Question 12

Construction Joints are ___ and ___.

Answer 12

Horizontal Keyway, Vertical Keyway

Question 13

Portland Cement shipping bags are…

Answer 13

94lbs , contain 1 cu ft. of loose material

Question 14

4 types of Concrete

Answer 14

Reinforced, Prestressed, Precast, Lightweight

Question 15

Concrete advantages

Answer 15

High compressional strength, low maintenance, economical, used universally, durable, strength can be determined

Question 16

Concrete disadvantages

Answer 16

Low tensile strength, expands + contracts, shrinks when dry, heavy

Question 17

Types of Portland Cement

Answer 17

Type I - Normal Portland
Type II - Modified Portland
Type III - High Early
Type IV - Low Heat
Type V - Sulfate Resistant

Question 18

Most common Type of Portland Cement + how long to fully cure

Answer 18

Type I , 28 days

Question 19

Most common type of Cement

Answer 19

Portland Cement

Question 20

3 major components of concrete

Answer 20

Water , Aggregates , Portland Cement

Question 21

What are Aggregates & what is Aggregates rule of thumb

Answer 21

Look at the fkn slides

Question 22

Hydration

Answer 22

Chemical reaction when Portland Cement is mixed with water

Question 23

Types of Cement

Answer 23

Portland Cement, White Portland, Air Entrained, Oil Well Cements

Question 24

Portland Cement Barrels contain..

Answer 24

376lbs, equal to 4 bags